From patchwork Sat Mar 30 11:37:03 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Machek X-Patchwork-Id: 2367401 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id D9F483FC54 for ; Sat, 30 Mar 2013 11:41:03 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ULu60-00067D-0C; Sat, 30 Mar 2013 11:37:16 +0000 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ULu5t-00066n-Oc for linux-arm-kernel@lists.infradead.org; Sat, 30 Mar 2013 11:37:14 +0000 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id EFB3181667; Sat, 30 Mar 2013 12:37:06 +0100 (CET) Date: Sat, 30 Mar 2013 12:37:03 +0100 From: Pavel Machek To: kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org, shawn.guo@linaro.org Subject: Re: PCI support for IMX6 Message-ID: <20130330113703.GA21042@amd.pavel.ucw.cz> References: <20130329185500.GB30029@amd.pavel.ucw.cz> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20130329185500.GB30029@amd.pavel.ucw.cz> User-Agent: Mutt/1.5.20 (2009-06-14) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130330_073710_286427_8AD4635F X-CRM114-Status: GOOD ( 15.24 ) X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [195.113.26.193 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Hi! > What is the state of PCI support for IMX6? I have board that has > e1000e connected via PCI, and I'd like to get network to work. > > I'm currently trying to port PCI support from 3.0, but it does not > look exactly easy. This is what I ended up with. Currently it is unable to turn on clock for PCI, thus it hangs. If someone has any ideas, let me know... Pavel diff --git a/arch/arm/boot/dts/imx6q-sbc6x.dts b/arch/arm/boot/dts/imx6q-sbc6x.dts index 9549b6f..6066625 100644 --- a/arch/arm/boot/dts/imx6q-sbc6x.dts +++ b/arch/arm/boot/dts/imx6q-sbc6x.dts @@ -23,4 +23,10 @@ status = "okay"; }; +&fec { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_enet_1>; + phy-mode = "rgmii"; + status = "okay"; +}; diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index 4c9c6f9..75ef3b0 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -7,6 +7,7 @@ config ARCH_MXC select CLKSRC_MMIO select GENERIC_CLOCKEVENTS select GENERIC_IRQ_CHIP + select MIGHT_HAVE_PCI select MULTI_IRQ_HANDLER select SPARSE_IRQ select USE_OF diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index c4ce090..b8b70c7 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -112,4 +112,6 @@ obj-$(CONFIG_MACH_EUKREA_MBIMXSD51_BASEBOARD) += eukrea_mbimxsd51-baseboard.o obj-$(CONFIG_MACH_IMX51_DT) += imx51-dt.o obj-$(CONFIG_SOC_IMX53) += mach-imx53.o +obj-$(CONFIG_PCI) += pcie.o + obj-y += devices/ diff --git a/arch/arm/mach-imx/crm_regs.h b/arch/arm/mach-imx/crm_regs.h new file mode 100644 index 0000000..417894b --- /dev/null +++ b/arch/arm/mach-imx/crm_regs.h @@ -0,0 +1,542 @@ +/* + * Copyright 2008-2012 Freescale Semiconductor, Inc. All Rights Reserved. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ +#ifndef __ARCH_ARM_MACH_MX6_CRM_REGS_H__ +#define __ARCH_ARM_MACH_MX6_CRM_REGS_H__ + +/* IOMUXC */ +#define MXC_IOMUXC_BASE MX6_IO_ADDRESS(MX6Q_IOMUXC_BASE_ADDR) +#define IOMUXC_GPR0 (iomux_base + 0x00) +#define IOMUXC_GPR1 (iomux_base + 0x04) +#define IOMUXC_GPR2 (iomux_base + 0x08) +#define IOMUXC_GPR3 (iomux_base + 0x0C) +#define IOMUXC_GPR4 (iomux_base + 0x10) +#define IOMUXC_GPR5 (iomux_base + 0x14) +#define IOMUXC_GPR6 (iomux_base + 0x18) +#define IOMUXC_GPR7 (iomux_base + 0x1C) +#define IOMUXC_GPR8 (iomux_base + 0x20) +#define IOMUXC_GPR9 (iomux_base + 0x24) +#define IOMUXC_GPR10 (iomux_base + 0x28) +#define IOMUXC_GPR11 (iomux_base + 0x2C) +#define IOMUXC_GPR12 (iomux_base + 0x30) +#define IOMUXC_GPR13 (iomux_base + 0x34) + +#define IOMUXC_GPR3_OCRAM_CTL_EN (0xf << 21) +#define IOMUXC_GPR4_VDOA_CACHE_EN (0xf << 28) +#define IOMUXC_GPR4_VPU_CACHE_EN (0xcc) +#define IOMUXC_GPR4_IPU_CACHE_EN (0x3) +#define IOMUXC_GPR6_IPU1_QOS (0x007f007f) +#define IOMUXC_GPR7_IPU2_QOS (0x007f007f) + +/* MMDC */ +#define MXC_MMDC_P0_BASE MX6_IO_ADDRESS(MMDC_P0_BASE_ADDR) +#define MMDC_MDMISC_OFFSET (MXC_MMDC_P0_BASE + 0x18) +#define MMDC_MDMISC_DDR_TYPE_MASK (0x3 << 3) +#define MMDC_MDMISC_DDR_TYPE_OFFSET (3) + +/* PLLs */ +#define MXC_PLL_BASE MX6_IO_ADDRESS(ANATOP_BASE_ADDR) +#define PLL1_SYS_BASE_ADDR (MXC_PLL_BASE + 0x0) +#define PLL2_528_BASE_ADDR (MXC_PLL_BASE + 0x30) +#define PLL3_480_USB1_BASE_ADDR (MXC_PLL_BASE + 0x10) +#define PLL4_AUDIO_BASE_ADDR (MXC_PLL_BASE + 0x70) +#define PLL5_VIDEO_BASE_ADDR (MXC_PLL_BASE + 0xA0) +#define PLL6_MLB_BASE_ADDR (MXC_PLL_BASE + 0xD0) +#define PLL7_480_USB2_BASE_ADDR (MXC_PLL_BASE + 0x20) +#define PLL8_ENET_BASE_ADDR (MXC_PLL_BASE + 0xE0) +#define PFD_480_BASE_ADDR (MXC_PLL_BASE + 0xF0) +#define PFD_528_BASE_ADDR (MXC_PLL_BASE + 0x100) +#define ANADIG_REG_CORE (MXC_PLL_BASE + 0x140) +#define ANADIG_MISC1_REG (MXC_PLL_BASE + 0x160) +#define ANATOP_LVDS_CLK1_SRC_SATA 0xB +#define ANATOP_LVDS_CLK1_OBEN_MASK 0x400 +#define ANATOP_LVDS_CLK1_IBEN_MASK 0x1000 +#define ANATOP_LVDS_CLK2_OBEN_MASK 0x800 +#define ANATOP_LVDS_CLK2_IBEN_MASK 0x2000 +#define ANA_MISC2_BASE_ADDR (MXC_PLL_BASE + 0x170) + +#define PLL_SETREG_OFFSET 0x4 +#define PLL_CLRREG_OFFSET 0x8 +#define PLL_TOGGLE_OFFSET 0x0C +#define PLL_NUM_DIV_OFFSET 0x10 +#define PLL_DENOM_DIV_OFFSET 0x20 +#define PLL_528_SS_OFFSET 0x10 +#define PLL_528_NUM_DIV_OFFSET 0x20 +#define PLL_528_DENOM_DIV_OFFSET 0x30 + +/* Common PLL register bit defines. */ +#define ANADIG_PLL_LOCK (1 << 31) +#define ANADIG_PLL_BYPASS (1 << 16) +#define ANADIG_PLL_BYPASS_CLK_SRC_MASK (0x3 << 14) +#define ANADIG_PLL_BYPASS_CLK_SRC_OFFSET (14) +#define ANADIG_PLL_ENABLE (1 << 13) +#define ANADIG_PLL_POWER_DOWN (1 << 12) +#define ANADIG_PLL_HOLD_RING_OFF (1 << 11) + +/* PLL1_SYS defines */ +#define ANADIG_PLL_SYS_DIV_SELECT_MASK (0x7F) +#define ANADIG_PLL_SYS_DIV_SELECT_OFFSET (0) +#define ANADIG_PLL_SYS_BYPASS_MASK (0x10000) +#define ANADIG_PLL_SYS_BYPASS_OFFSET (16) + +/* PLL2_528 defines */ +#define ANADIG_PLL_528_DIV_SELECT (1) + +/* PLL3_480 defines. */ +#define ANADIG_PLL_480_EN_USB_CLKS (1 << 6) +#define ANADIG_PLL_480_DIV_SELECT_MASK (0x3) +#define ANADIG_PLL_480_DIV_SELECT_OFFSET (0) + +/* PLL4_AUDIO PLL5_VIDEO defines. */ +#define ANADIG_PLL_AV_DIV_SELECT_MASK (0x7F) +#define ANADIG_PLL_AV_DIV_SELECT_OFFSET (0) +#define ANADIG_PLL_AV_TEST_DIV_SEL_MASK (0x180000) +#define ANADIG_PLL_AV_TEST_DIV_SEL_OFFSET (19) + +/* PLL6_MLB defines. */ +#define ANADIG_PLL_MLB_LOCK (1 << 31) +#define ANADIG_PLL_MLB_FLT_RES_CFG_MASK (0x7 << 26) +#define ANADIG_PLL_MLB_FLT_RES_CFG_OFFSET (26) +#define ANADIG_PLL_MLB_RX_CLK_DELAY_CFG_MASK (0x7 << 23) +#define ANADIG_PLL_MLB_RX_CLK_DELAY_CFG_OFFSET (23) +#define ANADIG_PLL_MLB_VDDD_DELAY_CFG_MASK (0x7 << 20) +#define ANADIG_PLL_MLB_VDDD_DELAY_CFG_OFFSET (20) +#define ANADIG_PLL_MLB_VDDA_DELAY_CFG_MASK (0x7 << 17) +#define ANADIG_PLL_MLB_VDDA_DELAY_CFG_OFFSET (17) +#define ANADIG_PLL_MLB_BYPASS (1 << 16) + +/* PLL8_ENET defines. */ +#define ANADIG_PLL_ENET_LOCK (1 << 31) +#define ANADIG_PLL_ENET_EN_SATA (1 << 20) +#define ANADIG_PLL_ENET_EN_PCIE (1 << 19) +#define ANADIG_PLL_ENET_BYPASS (1 << 16) +#define ANADIG_PLL_ENET_EN (1 << 13) +#define ANADIG_PLL_ENET_POWER_DOWN (1 << 12) +#define ANADIG_PLL_ENET_DIV_SELECT_MASK (0x3) +#define ANADIG_PLL_ENET_DIV_SELECT_OFFSET (0) +#define ANATOP_BYPASS_SRC_LVDS1 0x00004000 + +/* PFD register defines. */ +#define ANADIG_PFD_FRAC_MASK 0x3F +#define ANADIG_PFD3_CLKGATE (1 << 31) +#define ANADIG_PFD3_STABLE (1 << 30) +#define ANADIG_PFD3_FRAC_OFFSET 24 +#define ANADIG_PFD2_CLKGATE (1 << 23) +#define ANADIG_PFD2_STABLE (1 << 22) +#define ANADIG_PFD2_FRAC_OFFSET 16 +#define ANADIG_PFD1_CLKGATE (1 << 15) +#define ANADIG_PFD1_STABLE (1 << 14) +#define ANADIG_PFD1_FRAC_OFFSET 8 +#define ANADIG_PFD0_CLKGATE (1 << 7) +#define ANADIG_PFD0_STABLE (1 << 6) +#define ANADIG_PFD0_FRAC_OFFSET 0 + +/* ANATOP Regulator/LDO defines */ +#define ANADIG_REG_RAMP_RATE_MASK 0x03 +#define ANADIG_REG_RAMP_RATE_OFFSET (0x3 << 27) +#define ANADIG_REG_ADJUST_MASK 0xF +#define ANADIG_REG_TARGET_MASK 0x1F +#define ANADIG_REG2_SOC_ADJUST_OFFSET 23 +#define ANADIG_REG2_SOC_TARGET_OFFSET 18 +#define ANADIG_REG1_PU_ADJUST_OFFSET 14 +#define ANADIG_REG1_PU_TARGET_OFFSET 9 +#define ANADIG_REG0_CORE_ADJUST_OFFSET 5 +#define ANADIG_REG0_CORE_TARGET_OFFSET 0 + +/* ANA MISC2 register defines */ +#define ANADIG_ANA_MISC2_REG1_BO_EN (1 << 13) +#define ANADIG_ANA_MISC2_CONTROL3_MASK 0xC0000000 +#define ANADIG_ANA_MISC2_CONTROL3_OFFSET 30 + +#define MXC_CCM_BASE MX6_IO_ADDRESS(CCM_BASE_ADDR) +/* CCM Register Offsets. */ +#define MXC_CCM_CDCR_OFFSET 0x4C +#define MXC_CCM_CACRR_OFFSET 0x10 +#define MXC_CCM_CDHIPR_OFFSET 0x48 + +/* Register addresses of CCM*/ +#define MXC_CCM_CCR (MXC_CCM_BASE + 0x00) +#define MXC_CCM_CCDR (MXC_CCM_BASE + 0x04) +#define MXC_CCM_CSR (MXC_CCM_BASE + 0x08) +#define MXC_CCM_CCSR (MXC_CCM_BASE + 0x0c) +#define MXC_CCM_CACRR (MXC_CCM_BASE + 0x10) +#define MXC_CCM_CBCDR (MXC_CCM_BASE + 0x14) +#define MXC_CCM_CBCMR (MXC_CCM_BASE + 0x18) +#define MXC_CCM_CSCMR1 (MXC_CCM_BASE + 0x1c) +#define MXC_CCM_CSCMR2 (MXC_CCM_BASE + 0x20) +#define MXC_CCM_CSCDR1 (MXC_CCM_BASE + 0x24) +#define MXC_CCM_CS1CDR (MXC_CCM_BASE + 0x28) +#define MXC_CCM_CS2CDR (MXC_CCM_BASE + 0x2c) +#define MXC_CCM_CDCDR (MXC_CCM_BASE + 0x30) +#define MXC_CCM_CHSCCDR (MXC_CCM_BASE + 0x34) +#define MXC_CCM_CSCDR2 (MXC_CCM_BASE + 0x38) +#define MXC_CCM_CSCDR3 (MXC_CCM_BASE + 0x3c) +#define MXC_CCM_CSCDR4 (MXC_CCM_BASE + 0x40) +#define MXC_CCM_CWDR (MXC_CCM_BASE + 0x44) +#define MXC_CCM_CDHIPR (MXC_CCM_BASE + 0x48) +#define MXC_CCM_CDCR (MXC_CCM_BASE + 0x4c) +#define MXC_CCM_CTOR (MXC_CCM_BASE + 0x50) +#define MXC_CCM_CLPCR (MXC_CCM_BASE + 0x54) +#define MXC_CCM_CISR (MXC_CCM_BASE + 0x58) +#define MXC_CCM_CIMR (MXC_CCM_BASE + 0x5c) +#define MXC_CCM_CCOSR (MXC_CCM_BASE + 0x60) +#define MXC_CCM_CGPR (MXC_CCM_BASE + 0x64) +#define MXC_CCM_CCGR0 (MXC_CCM_BASE + 0x68) +#define MXC_CCM_CCGR1 (MXC_CCM_BASE + 0x6C) +#define MXC_CCM_CCGR2 (MXC_CCM_BASE + 0x70) +#define MXC_CCM_CCGR3 (MXC_CCM_BASE + 0x74) +#define MXC_CCM_CCGR4 (MXC_CCM_BASE + 0x78) +#define MXC_CCM_CCGR5 (MXC_CCM_BASE + 0x7C) +#define MXC_CCM_CCGR6 (MXC_CCM_BASE + 0x80) +#define MXC_CCM_CCGR7 (MXC_CCM_BASE + 0x84) +#define MXC_CCM_CMEOR (MXC_CCM_BASE + 0x88) + +/* Define the bits in register CCR */ +#define MXC_CCM_CCR_RBC_EN (1 << 27) +#define MXC_CCM_CCR_REG_BYPASS_CNT_MASK (0x3F << 21) +#define MXC_CCM_CCR_REG_BYPASS_CNT_OFFSET (21) +#define MXC_CCM_CCR_WB_COUNT_MASK (0x7 << 16) +#define MXC_CCM_CCR_WB_COUNT_OFFSET (16) +#define MXC_CCM_CCR_COSC_EN (1 << 12) +#define MXC_CCM_CCR_OSCNT_MASK (0xFF) +#define MXC_CCM_CCR_OSCNT_OFFSET (0) + +/* Define the bits in register CCDR */ +#define MXC_CCM_CCDR_MMDC_CH1_HS_MASK (1 << 16) +#define MXC_CCM_CCDR_MMDC_CH0_HS_MASK (1 << 17) + +/* Define the bits in register CSR */ +#define MXC_CCM_CSR_COSC_READY (1 << 5) +#define MXC_CCM_CSR_REF_EN_B (1 << 0) + +/* Define the bits in register CCSR */ +#define MXC_CCM_CCSR_PDF_540M_AUTO_DIS (1 << 15) +#define MXC_CCM_CCSR_PDF_720M_AUTO_DIS (1 << 14) +#define MXC_CCM_CCSR_PDF_454M_AUTO_DIS (1 << 13) +#define MXC_CCM_CCSR_PDF_508M_AUTO_DIS (1 << 12) +#define MXC_CCM_CCSR_PDF_594M_AUTO_DIS (1 << 11) +#define MXC_CCM_CCSR_PDF_352M_AUTO_DIS (1 << 10) +#define MXC_CCM_CCSR_PDF_400M_AUTO_DIS (1 << 9) +#define MXC_CCM_CCSR_STEP_SEL (1 << 8) +#define MXC_CCM_CCSR_PLL1_SW_CLK_SEL (1 << 2) +#define MXC_CCM_CCSR_PLL2_SW_CLK_SEL (1 << 1) +#define MXC_CCM_CCSR_PLL3_SW_CLK_SEL (1 << 0) + +/* Define the bits in register CACRR */ +#define MXC_CCM_CACRR_ARM_PODF_OFFSET (0) +#define MXC_CCM_CACRR_ARM_PODF_MASK (0x7) + +/* Define the bits in register CBCDR */ +#define MXC_CCM_CBCDR_PERIPH_CLK2_PODF_MASK (0x7 << 27) +#define MXC_CCM_CBCDR_PERIPH_CLK2_PODF_OFFSET (27) +#define MXC_CCM_CBCDR_PERIPH2_CLK_SEL (1 << 26) +#define MXC_CCM_CBCDR_PERIPH_CLK_SEL (1 << 25) +#define MXC_CCM_CBCDR_MMDC_CH0_PODF_MASK (0x7 << 19) +#define MXC_CCM_CBCDR_MMDC_CH0_PODF_OFFSET (19) +#define MXC_CCM_CBCDR_AXI_PODF_MASK (0x7 << 16) +#define MXC_CCM_CBCDR_AXI_PODF_OFFSET (16) +#define MXC_CCM_CBCDR_AHB_PODF_MASK (0x7 << 10) +#define MXC_CCM_CBCDR_AHB_PODF_OFFSET (10) +#define MXC_CCM_CBCDR_IPG_PODF_MASK (0x3 << 8) +#define MXC_CCM_CBCDR_IPG_PODF_OFFSET (8) +#define MXC_CCM_CBCDR_AXI_ALT_SEL_MASK (1 << 7) +#define MXC_CCM_CBCDR_AXI_ALT_SEL_OFFSET (7) +#define MXC_CCM_CBCDR_AXI_SEL (1 << 6) +#define MXC_CCM_CBCDR_MMDC_CH1_PODF_MASK (0x7 << 3) +#define MXC_CCM_CBCDR_MMDC_CH1_PODF_OFFSET (3) +#define MXC_CCM_CBCDR_PERIPH2_CLK2_PODF_MASK (0x7 << 0) +#define MXC_CCM_CBCDR_PERIPH2_CLK2_PODF_OFFSET (0) + +/* Define the bits in register CBCMR */ +#define MXC_CCM_CBCMR_GPU3D_SHADER_PODF_MASK (0x7 << 29) +#define MXC_CCM_CBCMR_GPU3D_SHADER_PODF_OFFSET (29) +#define MXC_CCM_CBCMR_GPU3D_CORE_PODF_MASK (0x7 << 26) +#define MXC_CCM_CBCMR_GPU3D_CORE_PODF_OFFSET (26) +#define MXC_CCM_CBCMR_GPU2D_CORE_PODF_MASK (0x7 << 23) +#define MXC_CCM_CBCMR_GPU2D_CORE_PODF_OFFSET (23) +#define MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_MASK (0x3 << 21) +#define MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_OFFSET (21) +#define MXC_CCM_CBCMR_PERIPH2_CLK2_SEL (1 << 20) +#define MXC_CCM_CBCMR_PRE_PERIPH_CLK_SEL_MASK (0x3 << 18) +#define MXC_CCM_CBCMR_PRE_PERIPH_CLK_SEL_OFFSET (18) +#define MXC_CCM_CBCMR_GPU2D_CLK_SEL_MASK (0x3 << 16) +#define MXC_CCM_CBCMR_GPU2D_CLK_SEL_OFFSET (16) +#define MXC_CCM_CBCMR_MLB_CLK_SEL_MASK (0x3 << 16) +#define MXC_CCM_CBCMR_MLB_CLK_SEL_OFFSET (16) +#define MXC_CCM_CBCMR_VPU_AXI_CLK_SEL_MASK (0x3 << 14) +#define MXC_CCM_CBCMR_VPU_AXI_CLK_SEL_OFFSET (14) +#define MXC_CCM_CBCMR_PERIPH_CLK2_SEL_MASK (0x3 << 12) +#define MXC_CCM_CBCMR_PERIPH_CLK2_SEL_OFFSET (12) +#define MXC_CCM_CBCMR_VDOAXI_CLK_SEL (1 << 11) +#define MXC_CCM_CBCMR_PCIE_AXI_CLK_SEL (1 << 10) +#define MXC_CCM_CBCMR_GPU3D_SHADER_CLK_SEL_MASK (0x3 << 8) +#define MXC_CCM_CBCMR_GPU3D_SHADER_CLK_SEL_OFFSET (8) +#define MXC_CCM_CBCMR_GPU3D_CORE_CLK_SEL_MASK (0x3 << 4) +#define MXC_CCM_CBCMR_GPU3D_CORE_CLK_SEL_OFFSET (4) +#define MXC_CCM_CBCMR_GPU3D_AXI_CLK_SEL (1 << 1) +#define MXC_CCM_CBCMR_GPU2D_AXI_CLK_SEL (1 << 0) + +/* Define the bits in register CSCMR1 */ +#define MXC_CCM_CSCMR1_ACLK_EMI_SLOW_MASK (0x3 << 29) +#define MXC_CCM_CSCMR1_ACLK_EMI_SLOW_OFFSET (29) +#define MXC_CCM_CSCMR1_ACLK_EMI_MASK (0x3 << 27) +#define MXC_CCM_CSCMR1_ACLK_EMI_OFFSET (27) +#define MXC_CCM_CSCMR1_ACLK_EMI_SLOW_PODF_MASK (0x7 << 23) +#define MXC_CCM_CSCMR1_ACLK_EMI_SLOW_PODF_OFFSET (23) +#define MXC_CCM_CSCMR1_ACLK_EMI_PODF_MASK (0x7 << 20) +#define MXC_CCM_CSCMR1_ACLK_EMI_PODF_OFFSET (20) +#define MXC_CCM_CSCMR1_USDHC4_CLK_SEL (1 << 19) +#define MXC_CCM_CSCMR1_USDHC3_CLK_SEL (1 << 18) +#define MXC_CCM_CSCMR1_USDHC2_CLK_SEL (1 << 17) +#define MXC_CCM_CSCMR1_USDHC1_CLK_SEL (1 << 16) +#define MXC_CCM_CSCMR1_SSI3_CLK_SEL_MASK (0x3 << 14) +#define MXC_CCM_CSCMR1_SSI3_CLK_SEL_OFFSET (14) +#define MXC_CCM_CSCMR1_SSI2_CLK_SEL_MASK (0x3 << 12) +#define MXC_CCM_CSCMR1_SSI2_CLK_SEL_OFFSET (12) +#define MXC_CCM_CSCMR1_SSI1_CLK_SEL_MASK (0x3 << 10) +#define MXC_CCM_CSCMR1_SSI1_CLK_SEL_OFFSET (10) +#define MXC_CCM_CSCMR1_PERCLK_CLK_SEL_MASK (0x1 << 6) +#define MXC_CCM_CSCMR1_PERCLK_CLK_SEL_OFFSET (6) +#define MXC_CCM_CSCMR1_PERCLK_PODF_MASK (0x3F) +#define MXC_CCM_CSCMR1_PERCLK_PODF_OFFSET (0) + +/* Define the bits in register CSCMR2 */ +#define MXC_CCM_CSCMR2_ESAI_CLK_SEL_MASK (0x3 << 19) +#define MXC_CCM_CSCMR2_ESAI_CLK_SEL_OFFSET (19) +#define MXC_CCM_CSCMR2_LDB_DI1_IPU_DIV (1 << 11) +#define MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV (1 << 10) +#define MXC_CCM_CSCMR2_CAN_CLK_PODF_MASK (0x3F << 2) +#define MXC_CCM_CSCMR2_CAN_CLK_PODF_OFFSET (2) + +/* Define the bits in register CSCDR1 */ +#define MXC_CCM_CSCDR1_VPU_AXI_PODF_MASK (0x7 << 25) +#define MXC_CCM_CSCDR1_VPU_AXI_PODF_OFFSET (25) +#define MXC_CCM_CSCDR1_USDHC4_PODF_MASK (0x7 << 22) +#define MXC_CCM_CSCDR1_USDHC4_PODF_OFFSET (22) +#define MXC_CCM_CSCDR1_USDHC3_PODF_MASK (0x7 << 19) +#define MXC_CCM_CSCDR1_USDHC3_PODF_OFFSET (19) +#define MXC_CCM_CSCDR1_USDHC2_PODF_MASK (0x7 << 16) +#define MXC_CCM_CSCDR1_USDHC2_PODF_OFFSET (16) +#define MXC_CCM_CSCDR1_USDHC1_PODF_MASK (0x7 << 11) +#define MXC_CCM_CSCDR1_USDHC1_PODF_OFFSET (11) +#define MXC_CCM_CSCDR1_USBOH3_CLK_PRED_OFFSET (8) +#define MXC_CCM_CSCDR1_USBOH3_CLK_PRED_MASK (0x7 << 8) +#define MXC_CCM_CSCDR1_USBOH3_CLK_PODF_OFFSET (6) +#define MXC_CCM_CSCDR1_UART_CLK_SEL_MASK (0x1 << 6) +#define MXC_CCM_CSCDR1_UART_CLK_SEL_OFFSET (6) +#define MXC_CCM_CSCDR1_USBOH3_CLK_PODF_MASK (0x3 << 6) +#define MXC_CCM_CSCDR1_UART_CLK_PODF_MASK (0x3F) +#define MXC_CCM_CSCDR1_UART_CLK_PODF_OFFSET (0) + +/* Define the bits in register CS1CDR */ +#define MXC_CCM_CS1CDR_ESAI_CLK_PODF_MASK (0x7 << 25) +#define MXC_CCM_CS1CDR_ESAI_CLK_PODF_OFFSET (25) +#define MXC_CCM_CS1CDR_SSI3_CLK_PRED_MASK (0x7 << 22) +#define MXC_CCM_CS1CDR_SSI3_CLK_PRED_OFFSET (22) +#define MXC_CCM_CS1CDR_SSI3_CLK_PODF_MASK (0x3F << 16) +#define MXC_CCM_CS1CDR_SSI3_CLK_PODF_OFFSET (16) +#define MXC_CCM_CS1CDR_ESAI_CLK_PRED_MASK (0x7 << 9) +#define MXC_CCM_CS1CDR_ESAI_CLK_PRED_OFFSET (9) +#define MXC_CCM_CS1CDR_SSI1_CLK_PRED_MASK (0x7 << 6) +#define MXC_CCM_CS1CDR_SSI1_CLK_PRED_OFFSET (6) +#define MXC_CCM_CS1CDR_SSI1_CLK_PODF_MASK (0x3F) +#define MXC_CCM_CS1CDR_SSI1_CLK_PODF_OFFSET (0) + +/* Define the bits in register CS2CDR */ +#define MXC_CCM_CS2CDR_ENFC_CLK_PODF_MASK (0x3F << 21) +#define MXC_CCM_CS2CDR_ENFC_CLK_PODF_OFFSET (21) +#define MXC_CCM_CS2CDR_ENFC_CLK_PRED_MASK (0x7 << 18) +#define MXC_CCM_CS2CDR_ENFC_CLK_PRED_OFFSET (18) +#define MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK (0x3 << 16) +#define MXC_CCM_CS2CDR_ENFC_CLK_SEL_OFFSET (16) +#define MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK (0x7 << 12) +#define MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET (12) +#define MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK (0x7 << 9) +#define MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET (9) +#define MXC_CCM_CS2CDR_SSI2_CLK_PRED_MASK (0x7 << 6) +#define MXC_CCM_CS2CDR_SSI2_CLK_PRED_OFFSET (6) +#define MXC_CCM_CS2CDR_SSI2_CLK_PODF_MASK (0x3F) +#define MXC_CCM_CS2CDR_SSI2_CLK_PODF_OFFSET (0) + +/* Define the bits in register CDCDR */ +#define MXC_CCM_CDCDR_HSI_TX_PODF_MASK (0x7 << 29) +#define MXC_CCM_CDCDR_HSI_TX_PODF_OFFSET (29) +#define MXC_CCM_CDCDR_HSI_TX_CLK_SEL (1 << 28) +#define MXC_CCM_CDCDR_SPDIF0_CLK_PRED_MASK (0x7 << 25) +#define MXC_CCM_CDCDR_SPDIF0_CLK_PRED_OFFSET (25) +#define MXC_CCM_CDCDR_SPDIF0_CLK_PODF_MASK (0x7 << 22) +#define MXC_CCM_CDCDR_SPDIF0_CLK_PODF_OFFSET (22) +#define MXC_CCM_CDCDR_SPDIF0_CLK_SEL_MASK (0x3 << 20) +#define MXC_CCM_CDCDR_SPDIF0_CLK_SEL_OFFSET (20) +#define MXC_CCM_CDCDR_SPDIF1_CLK_PRED_MASK (0x7 << 12) +#define MXC_CCM_CDCDR_SPDIF1_CLK_PRED_OFFSET (12) +#define MXC_CCM_CDCDR_SPDIF1_CLK_PODF_MASK (0x7 << 9) +#define MXC_CCM_CDCDR_SPDIF1_CLK_PODF_OFFSET (9) +#define MXC_CCM_CDCDR_SPDIF1_CLK_SEL_MASK (0x3 << 7) +#define MXC_CCM_CDCDR_SPDIF1_CLK_SEL_OFFSET (7) + +/* Define the bits in register CHSCCDR */ +#define MXC_CCM_CHSCCDR_IPU1_DI1_PRE_CLK_SEL_MASK (0x7 << 15) +#define MXC_CCM_CHSCCDR_IPU1_DI1_PRE_CLK_SEL_OFFSET (15) +#define MXC_CCM_CHSCCDR_IPU1_DI1_PODF_MASK (0x7 << 12) +#define MXC_CCM_CHSCCDR_IPU1_DI1_PODF_OFFSET (12) +#define MXC_CCM_CHSCCDR_IPU1_DI1_CLK_SEL_MASK (0x7 << 9) +#define MXC_CCM_CHSCCDR_IPU1_DI1_CLK_SEL_OFFSET (9) +#define MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK (0x7 << 6) +#define MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET (6) +#define MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK (0x7 << 3) +#define MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET (3) +#define MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK (0x7) +#define MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET (0) + +/* Define the bits in register CSCDR2 */ +#define MXC_CCM_CSCDR2_ECSPI_CLK_PODF_MASK (0x3F << 19) +#define MXC_CCM_CSCDR2_ECSPI_CLK_PODF_OFFSET (19) +#define MXC_CCM_CSCDR2_ECSPI_CLK_SEL_MASK (0x1 << 18) +#define MXC_CCM_CSCDR2_ECSPI_CLK_SEL_OFFSET (18) +#define MXC_CCM_CSCDR2_IPU2_DI1_PRE_CLK_SEL_MASK (0x7 << 15) +#define MXC_CCM_CSCDR2_IPU2_DI1_PRE_CLK_SEL_OFFSET (15) +#define MXC_CCM_CSCDR2_IPU2_DI1_PODF_MASK (0x7 << 12) +#define MXC_CCM_CSCDR2_IPU2_DI1_PODF_OFFSET (12) +#define MXC_CCM_CSCDR2_IPU2_DI1_CLK_SEL_MASK (0x7 << 9) +#define MXC_CCM_CSCDR2_IPU2_DI1_CLK_SEL_OFFSET (9) +#define MXC_CCM_CSCDR2_IPU2_DI0_PRE_CLK_SEL_MASK (0x7 << 6) +#define MXC_CCM_CSCDR2_IPU2_DI0_PRE_CLK_SEL_OFFSET (6) +#define MXC_CCM_CSCDR2_IPU2_DI0_PODF_MASK (0x7 << 3) +#define MXC_CCM_CSCDR2_IPU2_DI0_PODF_OFFSET (3) +#define MXC_CCM_CSCDR2_IPU2_DI0_CLK_SEL_MASK (0x7) +#define MXC_CCM_CSCDR2_IPU2_DI0_CLK_SEL_OFFSET (0) + +/* Define the bits in register CSCDR3 */ +#define MXC_CCM_CSCDR3_IPU2_HSP_PODF_MASK (0x7 << 16) +#define MXC_CCM_CSCDR3_IPU2_HSP_PODF_OFFSET (16) +#define MXC_CCM_CSCDR3_IPU2_HSP_CLK_SEL_MASK (0x3 << 14) +#define MXC_CCM_CSCDR3_IPU2_HSP_CLK_SEL_OFFSET (14) +#define MXC_CCM_CSCDR3_IPU1_HSP_PODF_MASK (0x7 << 11) +#define MXC_CCM_CSCDR3_IPU1_HSP_PODF_OFFSET (11) +#define MXC_CCM_CSCDR3_IPU1_HSP_CLK_SEL_MASK (0x3 << 9) +#define MXC_CCM_CSCDR3_IPU1_HSP_CLK_SEL_OFFSET (9) + +/* Define the bits in register CDHIPR */ +#define MXC_CCM_CDHIPR_ARM_PODF_BUSY (1 << 16) +#define MXC_CCM_CDHIPR_PERIPH_CLK_SEL_BUSY (1 << 5) +#define MXC_CCM_CDHIPR_MMDC_CH0_PODF_BUSY (1 << 4) +#define MXC_CCM_CDHIPR_PERIPH2_CLK_SEL_BUSY (1 << 3) +#define MXC_CCM_CDHIPR_MMDC_CH1_PODF_BUSY (1 << 2) +#define MXC_CCM_CDHIPR_AHB_PODF_BUSY (1 << 1) +#define MXC_CCM_CDHIPR_AXI_PODF_BUSY (1) + +/* Define the bits in register CLPCR */ +#define MXC_CCM_CLPCR_MASK_L2CC_IDLE (1 << 27) +#define MXC_CCM_CLPCR_MASK_SCU_IDLE (1 << 26) +#define MXC_CCM_CLPCR_MASK_CORE3_WFI (1 << 25) +#define MXC_CCM_CLPCR_MASK_CORE2_WFI (1 << 24) +#define MXC_CCM_CLPCR_MASK_CORE1_WFI (1 << 23) +#define MXC_CCM_CLPCR_MASK_CORE0_WFI (1 << 22) +#define MXC_CCM_CLPCR_BYP_MMDC_CH1_LPM_HS (1 << 21) +#define MXC_CCM_CLPCR_BYP_MMDC_CH0_LPM_HS (1 << 19) +#define MXC_CCM_CLPCR_WB_CORE_AT_LPM (1 << 17) +#define MXC_CCM_CLPCR_WB_PER_AT_LPM (1 << 16) +#define MXC_CCM_CLPCR_COSC_PWRDOWN (1 << 11) +#define MXC_CCM_CLPCR_STBY_COUNT_MASK (0x3 << 9) +#define MXC_CCM_CLPCR_STBY_COUNT_OFFSET (9) +#define MXC_CCM_CLPCR_VSTBY (1 << 8) +#define MXC_CCM_CLPCR_DIS_REF_OSC (1 << 7) +#define MXC_CCM_CLPCR_SBYOS (1 << 6) +#define MXC_CCM_CLPCR_ARM_CLK_DIS_ON_LPM (1 << 5) +#define MXC_CCM_CLPCR_LPSR_CLK_SEL_MASK (0x3 << 3) +#define MXC_CCM_CLPCR_LPSR_CLK_SEL_OFFSET (3) +#define MXC_CCM_CLPCR_BYPASS_PMIC_VFUNC_READY (1 << 2) +#define MXC_CCM_CLPCR_LPM_MASK (0x3) +#define MXC_CCM_CLPCR_LPM_OFFSET (0) + +/* Define the bits in register CISR */ +#define MXC_CCM_CISR_ARM_PODF_LOADED (1 << 26) +#define MXC_CCM_CISR_MMDC_CH0_PODF_LOADED (1 << 23) +#define MXC_CCM_CISR_PERIPH_CLK_SEL_LOADED (1 << 22) +#define MXC_CCM_CISR_MMDC_CH1_PODF_LOADED (1 << 21) +#define MXC_CCM_CISR_AHB_PODF_LOADED (1 << 20) +#define MXC_CCM_CISR_PERIPH2_CLK_SEL_LOADED (1 << 19) +#define MXC_CCM_CISR_AXI_PODF_LOADED (1 << 17) +#define MXC_CCM_CISR_COSC_READY (1 << 6) +#define MXC_CCM_CISR_LRF_PLL (1) + +/* Define the bits in register CIMR */ +#define MXC_CCM_CIMR_MASK_ARM_PODF_LOADED (1 << 26) +#define MXC_CCM_CIMR_MASK_MMDC_CH0_PODF_LOADED (1 << 23) +#define MXC_CCM_CIMR_MASK_PERIPH_CLK_SEL_LOADED (1 << 22) +#define MXC_CCM_CIMR_MASK_MMDC_CH1_PODF_LOADED (1 << 21) +#define MXC_CCM_CIMR_MASK_AHB_PODF_LOADED (1 << 20) +#define MXC_CCM_CIMR_MASK_PERIPH2_CLK_SEL_LOADED (1 << 22) +#define MXC_CCM_CIMR_MASK_AXI_PODF_LOADED (1 << 17) +#define MXC_CCM_CIMR_MASK_COSC_READY (1 << 6) +#define MXC_CCM_CIMR_MASK_LRF_PLL (1) + +/* Define the bits in register CCOSR */ +#define MXC_CCM_CCOSR_CKO2_EN_OFFSET (24) +#define MXC_CCM_CCOSR_CKO2_DIV_MASK (0x7 << 21) +#define MXC_CCM_CCOSR_CKO2_DIV_OFFSET (21) +#define MXC_CCM_CCOSR_CKO2_SEL_OFFSET (16) +#define MXC_CCM_CCOSR_CKO2_SEL_MASK (0x1F << 16) +#define MXC_CCM_CCOSR_CKOL_MIRROR_CKO2_MASK (1 << 8) +#define MXC_CCM_CCOSR_CKOL_EN_OFFSET 7 +#define MXC_CCM_CCOSR_CKOL_EN (0x1 << 7) +#define MXC_CCM_CCOSR_CKOL_DIV_MASK (0x7 << 4) +#define MXC_CCM_CCOSR_CKOL_DIV_OFFSET (4) +#define MXC_CCM_CCOSR_CKOL_SEL_MASK (0xF) +#define MXC_CCM_CCOSR_CKOL_SEL_OFFSET (0) + +/* Define the bits in registers CGPR */ +#define MXC_CCM_CGPR_EFUSE_PROG_SUPPLY_GATE (1 << 4) +#define MXC_CCM_CGPR_MMDC_EXT_CLK_DIS (1 << 2) +#define MXC_CCM_CGPR_PMIC_DELAY_SCALER (1) +#define MXC_CCM_CGPR_MEM_IPG_STOP_MASK (1 << 1) +#define MXC_CCM_CGPR_WAIT_MODE_FIX (1 << 17) + +/* Define the bits in registers CCGRx */ +#define MXC_CCM_CCGRx_CG_MASK 0x3 +#define MXC_CCM_CCGRx_MOD_OFF 0x0 +#define MXC_CCM_CCGRx_MOD_ON 0x3 +#define MXC_CCM_CCGRx_MOD_IDLE 0x1 + +#define MXC_CCM_CCGRx_CG15_MASK (0x3 << 30) +#define MXC_CCM_CCGRx_CG14_MASK (0x3 << 28) +#define MXC_CCM_CCGRx_CG13_MASK (0x3 << 26) +#define MXC_CCM_CCGRx_CG12_MASK (0x3 << 24) +#define MXC_CCM_CCGRx_CG11_MASK (0x3 << 22) +#define MXC_CCM_CCGRx_CG10_MASK (0x3 << 20) +#define MXC_CCM_CCGRx_CG9_MASK (0x3 << 18) +#define MXC_CCM_CCGRx_CG8_MASK (0x3 << 16) +#define MXC_CCM_CCGRx_CG7_MASK (0x3 << 14) +#define MXC_CCM_CCGRx_CG5_MASK (0x3 << 10) +#define MXC_CCM_CCGRx_CG4_MASK (0x3 << 8) +#define MXC_CCM_CCGRx_CG3_MASK (0x3 << 6) +#define MXC_CCM_CCGRx_CG2_MASK (0x3 << 4) +#define MXC_CCM_CCGRx_CG1_MASK (0x3 << 2) +#define MXC_CCM_CCGRx_CG0_MASK (0x3 << 0) + +#define MXC_CCM_CCGRx_CG15_OFFSET 30 +#define MXC_CCM_CCGRx_CG14_OFFSET 28 +#define MXC_CCM_CCGRx_CG13_OFFSET 26 +#define MXC_CCM_CCGRx_CG12_OFFSET 24 +#define MXC_CCM_CCGRx_CG11_OFFSET 22 +#define MXC_CCM_CCGRx_CG10_OFFSET 20 +#define MXC_CCM_CCGRx_CG9_OFFSET 18 +#define MXC_CCM_CCGRx_CG8_OFFSET 16 +#define MXC_CCM_CCGRx_CG7_OFFSET 14 +#define MXC_CCM_CCGRx_CG6_OFFSET 12 +#define MXC_CCM_CCGRx_CG5_OFFSET 10 +#define MXC_CCM_CCGRx_CG4_OFFSET 8 +#define MXC_CCM_CCGRx_CG3_OFFSET 6 +#define MXC_CCM_CCGRx_CG2_OFFSET 4 +#define MXC_CCM_CCGRx_CG1_OFFSET 2 +#define MXC_CCM_CCGRx_CG0_OFFSET 0 + +#endif /* __ARCH_ARM_MACH_MX6_CRM_REGS_H__ */ diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index 04a02ba..7db6b4d 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -38,6 +38,7 @@ #include "common.h" #include "cpuidle.h" #include "hardware.h" +#include "pcie.h" #define IMX6Q_ANALOG_DIGPROG 0x260 @@ -190,6 +191,139 @@ static void __init imx6q_usb_init(void) } } +#define SBC6X_PCIE_PWR IMX_GPIO_NR(1, 3) +#define SBC6X_PCIE_RST IMX_GPIO_NR(1, 8) + +#include "pcie.h" +struct imx_pcie_data { + int id; + resource_size_t iobase; + resource_size_t iosize; + resource_size_t irq; +}; + +struct platform_device *__init imx_add_pcie( + const struct imx_pcie_data *data, + const struct imx_pcie_platform_data *pdata); + +static const struct imx_pcie_platform_data mx6_sbc6x_pcie_data __initconst = { + .pcie_pwr_en = SBC6X_PCIE_PWR, + .pcie_rst = SBC6X_PCIE_RST, + .pcie_wake_up = -EINVAL, + .pcie_dis = -EINVAL, +}; + +#define imx_pcie_data_entry_single(soc, _id, _hwid, size) \ + { \ + .id = _id, \ + .iobase = soc ## _PCIE ## _hwid ## _BASE_ADDR, \ + .iosize = size, \ + .irq = soc ## _INT_PCIE ## _hwid, \ + } + +#define imx_pcie_data_entry(soc, _id, _hwid, _size) \ + [_id] = imx_pcie_data_entry_single(soc, _id, _hwid, _size) + +#ifdef CONFIG_SOC_IMX6Q +#define MX6Q_PCIE_BASE_ADDR (PCIE_ARB_END_ADDR - SZ_16K + 1) +#define MX6Q_INT_PCIE MXC_INT_PCIE_3 +const struct imx_pcie_data imx6q_pcie_data __initconst = + imx_pcie_data_entry_single(MX6Q, 0, , SZ_16K); +#endif + +#define imx6q_add_pcie(pdata) imx_add_pcie(&imx6q_pcie_data, pdata) + + + +struct platform_device *imx_add_platform_device_dmamask( + const char *name, int id, + const struct resource *res, unsigned int num_resources, + const void *data, size_t size_data, u64 dmamask); + +struct platform_device *__init imx_add_platform_device_dmamask( + const char *name, int id, + const struct resource *res, unsigned int num_resources, + const void *data, size_t size_data, u64 dmamask) +{ + int ret = -ENOMEM; + struct platform_device *pdev; + + pdev = platform_device_alloc(name, id); + if (!pdev) + goto err; + + if (dmamask) { + /* + * This memory isn't freed when the device is put, + * I don't have a nice idea for that though. Conceptually + * dma_mask in struct device should not be a pointer. + * See http://thread.gmane.org/gmane.linux.kernel.pci/9081 + */ + pdev->dev.dma_mask = + kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL); + if (!pdev->dev.dma_mask) + /* ret is still -ENOMEM; */ + goto err; + + *pdev->dev.dma_mask = dmamask; + pdev->dev.coherent_dma_mask = dmamask; + } + + if (res) { + ret = platform_device_add_resources(pdev, res, num_resources); + if (ret) + goto err; + } + + if (data) { + ret = platform_device_add_data(pdev, data, size_data); + if (ret) + goto err; + } + + ret = platform_device_add(pdev); + if (ret) { +err: + if (dmamask) + kfree(pdev->dev.dma_mask); + platform_device_put(pdev); + return ERR_PTR(ret); + } + + return pdev; +} + +static inline struct platform_device *imx_add_platform_device( + const char *name, int id, + const struct resource *res, unsigned int num_resources, + const void *data, size_t size_data) +{ + return imx_add_platform_device_dmamask( + name, id, res, num_resources, data, size_data, 0); +} + +struct platform_device *__init imx_add_pcie( + const struct imx_pcie_data *data, + const struct imx_pcie_platform_data *pdata) +{ + struct resource res[] = { + { + .start = data->iobase, + .end = data->iobase + data->iosize - 1, + .flags = IORESOURCE_MEM, + }, { + .start = data->irq, + .end = data->irq, + .flags = IORESOURCE_IRQ, + }, + }; + + return imx_add_platform_device("imx-pcie", -1, + res, ARRAY_SIZE(res), + pdata, sizeof(*pdata)); +} + + static void __init imx6q_init_machine(void) { if (of_machine_is_compatible("fsl,imx6q-sabrelite")) @@ -200,6 +334,10 @@ static void __init imx6q_init_machine(void) imx6q_pm_init(); imx6q_usb_init(); imx6q_1588_init(); + + printk("FIXME: initializing Pcie\n"); + /* Add PCIe RC interface support */ + imx6q_add_pcie(&mx6_sbc6x_pcie_data); } #define OCOTP_CFG3 0x440 diff --git a/arch/arm/mach-imx/pcie.c b/arch/arm/mach-imx/pcie.c new file mode 100644 index 0000000..9d4f6a6 --- /dev/null +++ b/arch/arm/mach-imx/pcie.c @@ -0,0 +1,822 @@ +/* + * arch/arm/mach-mx6/pcie.c + * + * PCIe host controller driver for IMX6 SOCs + * + * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved. + * + * Bits taken from arch/arm/mach-dove/pcie.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "pcie.h" + +#include + +#include "crm_regs.h" + +/* Register Definitions */ +#define PRT_LOG_R_BaseAddress 0x700 + +/* Register DB_R0 */ +/* Debug Register 0 */ +#define DB_R0 (PRT_LOG_R_BaseAddress + 0x28) +#define DB_R0_RegisterSize 32 +#define DB_R0_RegisterResetValue 0x0 +#define DB_R0_RegisterResetMask 0xFFFFFFFF +/* End of Register Definition for DB_R0 */ + +/* Register DB_R1 */ +/* Debug Register 1 */ +#define DB_R1 (PRT_LOG_R_BaseAddress + 0x2c) +#define DB_R1_RegisterSize 32 +#define DB_R1_RegisterResetValue 0x0 +#define DB_R1_RegisterResetMask 0xFFFFFFFF +/* End of Register Definition for DB_R1 */ + +#define ATU_R_BaseAddress 0x900 +#define ATU_VIEWPORT_R (ATU_R_BaseAddress + 0x0) +#define ATU_REGION_CTRL1_R (ATU_R_BaseAddress + 0x4) +#define ATU_REGION_CTRL2_R (ATU_R_BaseAddress + 0x8) +#define ATU_REGION_LOWBASE_R (ATU_R_BaseAddress + 0xC) +#define ATU_REGION_UPBASE_R (ATU_R_BaseAddress + 0x10) +#define ATU_REGION_LIMIT_ADDR_R (ATU_R_BaseAddress + 0x14) +#define ATU_REGION_LOW_TRGT_ADDR_R (ATU_R_BaseAddress + 0x18) +#define ATU_REGION_UP_TRGT_ADDR_R (ATU_R_BaseAddress + 0x1C) + +/* GPR1: iomuxc_gpr1_pcie_ref_clk_en(iomuxc_gpr1[16]) */ +#define iomuxc_gpr1_pcie_ref_clk_en (1 << 16) +/* GPR1: iomuxc_gpr1_test_powerdown(iomuxc_gpr1_18) */ +#define iomuxc_gpr1_test_powerdown (1 << 18) + +/* GPR12: iomuxc_gpr12_los_level(iomuxc_gpr12[8:4]) */ +#define iomuxc_gpr12_los_level (0x1F << 4) +/* GPR12: iomuxc_gpr12_app_ltssm_enable(iomuxc_gpr12[10]) */ +#define iomuxc_gpr12_app_ltssm_enable (1 << 10) +/* GPR12: iomuxc_gpr12_device_type(iomuxc_gpr12[15:12]) */ +#define iomuxc_gpr12_device_type (0xF << 12) + +/* GPR8: iomuxc_gpr8_tx_deemph_gen1(iomuxc_gpr8[5:0]) */ +#define iomuxc_gpr8_tx_deemph_gen1 (0x3F << 0) +/* GPR8: iomuxc_gpr8_tx_deemph_gen2_3p5db(iomuxc_gpr8[11:6]) */ +#define iomuxc_gpr8_tx_deemph_gen2_3p5db (0x3F << 6) +/* GPR8: iomuxc_gpr8_tx_deemph_gen2_6db(iomuxc_gpr8[17:12]) */ +#define iomuxc_gpr8_tx_deemph_gen2_6db (0x3F << 12) +/* GPR8: iomuxc_gpr8_tx_swing_full(iomuxc_gpr8[24:18]) */ +#define iomuxc_gpr8_tx_swing_full (0x7F << 18) +/* GPR8: iomuxc_gpr8_tx_swing_low(iomuxc_gpr8[31:25]) */ +#define iomuxc_gpr8_tx_swing_low (0x7F << 25) + +/* Registers of PHY */ +/* Register PHY_STS_R */ +/* PHY Status Register */ +#define PHY_STS_R (PRT_LOG_R_BaseAddress + 0x110) + +/* Register PHY_CTRL_R */ +/* PHY Control Register */ +#define PHY_CTRL_R (PRT_LOG_R_BaseAddress + 0x114) + +#define SSP_CR_SUP_DIG_MPLL_OVRD_IN_LO 0x0011 +/* FIELD: RES_ACK_IN_OVRD [15:15] +// FIELD: RES_ACK_IN [14:14] +// FIELD: RES_REQ_IN_OVRD [13:13] +// FIELD: RES_REQ_IN [12:12] +// FIELD: RTUNE_REQ_OVRD [11:11] +// FIELD: RTUNE_REQ [10:10] +// FIELD: MPLL_MULTIPLIER_OVRD [9:9] +// FIELD: MPLL_MULTIPLIER [8:2] +// FIELD: MPLL_EN_OVRD [1:1] +// FIELD: MPLL_EN [0:0] +*/ + +#define SSP_CR_SUP_DIG_ATEOVRD 0x0010 +/* FIELD: ateovrd_en [2:2] +// FIELD: ref_usb2_en [1:1] +// FIELD: ref_clkdiv2 [0:0] +*/ + +#define SSP_CR_LANE0_DIG_RX_OVRD_IN_LO 0x1005 +/* FIELD: RX_LOS_EN_OVRD [13:13] +// FIELD: RX_LOS_EN [12:12] +// FIELD: RX_TERM_EN_OVRD [11:11] +// FIELD: RX_TERM_EN [10:10] +// FIELD: RX_BIT_SHIFT_OVRD [9:9] +// FIELD: RX_BIT_SHIFT [8:8] +// FIELD: RX_ALIGN_EN_OVRD [7:7] +// FIELD: RX_ALIGN_EN [6:6] +// FIELD: RX_DATA_EN_OVRD [5:5] +// FIELD: RX_DATA_EN [4:4] +// FIELD: RX_PLL_EN_OVRD [3:3] +// FIELD: RX_PLL_EN [2:2] +// FIELD: RX_INVERT_OVRD [1:1] +// FIELD: RX_INVERT [0:0] +*/ + +#define SSP_CR_LANE0_DIG_RX_ASIC_OUT 0x100D +/* FIELD: LOS [2:2] +// FIELD: PLL_STATE [1:1] +// FIELD: VALID [0:0] +*/ + +/* control bus bit definition */ +#define PCIE_CR_CTL_DATA_LOC 0 +#define PCIE_CR_CTL_CAP_ADR_LOC 16 +#define PCIE_CR_CTL_CAP_DAT_LOC 17 +#define PCIE_CR_CTL_WR_LOC 18 +#define PCIE_CR_CTL_RD_LOC 19 +#define PCIE_CR_STAT_DATA_LOC 0 +#define PCIE_CR_STAT_ACK_LOC 16 + +#define PCIE_CAP_STRUC_BaseAddress 0x70 + +/* Register LNK_CAP */ +/* PCIE Link cap */ +#define LNK_CAP (PCIE_CAP_STRUC_BaseAddress + 0xc) +#define LNK_CAP_RegisterSize 32 +#define LNK_CAP_RegisterResetValue 0x011cc12 +#define LNK_CAP_RegisterResetMask 0xffffffff + +/* End of Register Definitions */ + +#define PCIE_DBI_BASE_ADDR (PCIE_ARB_END_ADDR - SZ_16K + 1) + +#define PCIE_CONF_BUS(b) (((b) & 0xFF) << 16) +#define PCIE_CONF_DEV(d) (((d) & 0x1F) << 11) +#define PCIE_CONF_FUNC(f) (((f) & 0x7) << 8) +#define PCIE_CONF_REG(r) ((r) & ~0x3) + + +#define PERIPBASE_VIRT 0xF2000000 +#define MX6_IO_ADDRESS(x) (void __force __iomem *)((x) + PERIPBASE_VIRT) + + +static void __iomem *base; +static void __iomem *dbi_base; + +void *iomux_base; + +enum { + MemRdWr = 0, + MemRdLk = 1, + IORdWr = 2, + CfgRdWr0 = 4, + CfgRdWr1 = 5 +}; + +struct imx_pcie_port { + u8 index; + u8 root_bus_nr; + void __iomem *base; + void __iomem *dbi_base; + spinlock_t conf_lock; + + char io_space_name[16]; + char mem_space_name[16]; + + struct resource res[2]; +}; + +static struct imx_pcie_port imx_pcie_port[1]; +static int num_pcie_ports; + +static int pcie_phy_cr_read(int addr, int *data); +static int pcie_phy_cr_write(int addr, int data); +static void change_field(int *in, int start, int end, int val); + +/* IMX PCIE GPR configure routines */ +static inline void imx_pcie_clrset(u32 mask, u32 val, void __iomem *addr) +{ + printk("FIXME: Addr is %lx\n", addr); + writel(((readl(addr) & ~mask) | (val & mask)), addr); +} + +static struct imx_pcie_port *bus_to_port(int bus) +{ + int i; + + for (i = num_pcie_ports - 1; i >= 0; i--) { + int rbus = imx_pcie_port[i].root_bus_nr; + if (rbus != -1 && rbus == bus) + break; + } + + return i >= 0 ? imx_pcie_port + i : NULL; +} + +static int __init imx_pcie_setup(int nr, struct pci_sys_data *sys) +{ + struct imx_pcie_port *pp; + + if (nr >= num_pcie_ports) + return 0; + + pp = &imx_pcie_port[nr]; + pp->root_bus_nr = sys->busnr; + + /* + * IORESOURCE_IO + */ + snprintf(pp->io_space_name, sizeof(pp->io_space_name), + "PCIe %d I/O", pp->index); + pp->io_space_name[sizeof(pp->io_space_name) - 1] = 0; + pp->res[0].name = pp->io_space_name; + if (pp->index == 0) { + pp->res[0].start = PCIE_ARB_BASE_ADDR; + pp->res[0].end = pp->res[0].start + SZ_1M - 1; + } + pp->res[0].flags = IORESOURCE_IO; + if (request_resource(&ioport_resource, &pp->res[0])) + panic("Request PCIe IO resource failed\n"); +// FIXME +// sys->resource[0] = &pp->res[0]; + + /* + * IORESOURCE_MEM + */ + snprintf(pp->mem_space_name, sizeof(pp->mem_space_name), + "PCIe %d MEM", pp->index); + pp->mem_space_name[sizeof(pp->mem_space_name) - 1] = 0; + pp->res[1].name = pp->mem_space_name; + if (pp->index == 0) { + pp->res[1].start = PCIE_ARB_BASE_ADDR + SZ_1M; + pp->res[1].end = pp->res[1].start + SZ_16M - SZ_2M - 1; + } + pp->res[1].flags = IORESOURCE_MEM; + if (request_resource(&iomem_resource, &pp->res[1])) + panic("Request PCIe Memory resource failed\n"); +// sys->resource[1] = &pp->res[1]; + +// sys->resource[2] = NULL; + + return 1; +} + +static int imx_pcie_link_up(void __iomem *dbi_base) +{ + /* Check the pcie link up or link down */ + int iterations = 200; + u32 rc, ltssm, rx_valid, temp; + + do { + /* link is debug bit 36 debug 1 start in bit 32 */ + rc = readl(dbi_base + DB_R1) & (0x1 << (36 - 32)) ; + iterations--; + usleep_range(2000, 3000); + + /* From L0, initiate MAC entry to gen2 if EP/RC supports gen2. + * Wait 2ms (LTSSM timeout is 24ms, PHY lock is ~5us in gen2). + * If (MAC/LTSSM.state == Recovery.RcvrLock) + * && (PHY/rx_valid==0) then pulse PHY/rx_reset. Transition + * to gen2 is stuck + */ + pcie_phy_cr_read(SSP_CR_LANE0_DIG_RX_ASIC_OUT, &rx_valid); + ltssm = readl(dbi_base + DB_R0) & 0x3F; + if ((ltssm == 0x0D) && ((rx_valid & 0x01) == 0)) { + pr_info("Transition to gen2 is stuck, reset PHY!\n"); + pcie_phy_cr_read(SSP_CR_LANE0_DIG_RX_OVRD_IN_LO, &temp); + change_field(&temp, 3, 3, 0x1); + change_field(&temp, 5, 5, 0x1); + pcie_phy_cr_write(SSP_CR_LANE0_DIG_RX_OVRD_IN_LO, + 0x0028); + usleep_range(2000, 3000); + pcie_phy_cr_read(SSP_CR_LANE0_DIG_RX_OVRD_IN_LO, &temp); + change_field(&temp, 3, 3, 0x0); + change_field(&temp, 5, 5, 0x0); + pcie_phy_cr_write(SSP_CR_LANE0_DIG_RX_OVRD_IN_LO, + 0x0000); + } + + if ((iterations < 0)) + pr_info("link up failed, DB_R0:0x%08x, DB_R1:0x%08x!\n" + , readl(dbi_base + DB_R0) + , readl(dbi_base + DB_R1)); + } while (!rc && iterations); + + if (!rc) + return 0; + return 1; +} + +static void imx_pcie_regions_setup(void __iomem *dbi_base) +{ + /* + * i.MX6 defines 16MB in the AXI address map for PCIe. + * + * That address space excepted the pcie registers is + * split and defined into different regions by iATU, + * with sizes and offsets as follows: + * + * 0x0100_0000 --- 0x010F_FFFF 1MB IORESOURCE_IO + * 0x0110_0000 --- 0x01EF_FFFF 14MB IORESOURCE_MEM + * 0x01F0_0000 --- 0x01FF_FFFF 1MB Cfg + Registers + */ + + /* CMD reg:I/O space, MEM space, and Bus Master Enable */ + writel(readl(dbi_base + PCI_COMMAND) + | PCI_COMMAND_IO + | PCI_COMMAND_MEMORY + | PCI_COMMAND_MASTER, + dbi_base + PCI_COMMAND); + + /* Set the CLASS_REV of RC CFG header to PCI_CLASS_BRIDGE_PCI */ + writel(readl(dbi_base + PCI_CLASS_REVISION) + | (PCI_CLASS_BRIDGE_PCI << 16), + dbi_base + PCI_CLASS_REVISION); + + /* + * region0 outbound used to access target cfg + */ + writel(0, dbi_base + ATU_VIEWPORT_R); + writel(PCIE_ARB_END_ADDR - SZ_1M + 1, dbi_base + ATU_REGION_LOWBASE_R); + writel(PCIE_ARB_END_ADDR, dbi_base + ATU_REGION_LIMIT_ADDR_R); + writel(0, dbi_base + ATU_REGION_UPBASE_R); + + writel(0, dbi_base + ATU_REGION_LOW_TRGT_ADDR_R); + writel(0, dbi_base + ATU_REGION_UP_TRGT_ADDR_R); + writel(CfgRdWr0, dbi_base + ATU_REGION_CTRL1_R); + writel((1<<31), dbi_base + ATU_REGION_CTRL2_R); +} + +static int imx_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where, + int size, u32 *val) +{ + struct imx_pcie_port *pp = bus_to_port(bus->number); + u32 va_address; + + if (pp) { + if (devfn != 0) { + *val = 0xffffffff; + return PCIBIOS_DEVICE_NOT_FOUND; + } + + va_address = (u32)dbi_base + (where & ~0x3); + } else + va_address = (u32)base + (PCIE_CONF_BUS(bus->number - 1) + + PCIE_CONF_DEV(PCI_SLOT(devfn)) + + PCIE_CONF_FUNC(PCI_FUNC(devfn)) + + PCIE_CONF_REG(where)); + + *val = readl(va_address); + + if (size == 1) + *val = (*val >> (8 * (where & 3))) & 0xFF; + else if (size == 2) + *val = (*val >> (8 * (where & 3))) & 0xFFFF; + + return PCIBIOS_SUCCESSFUL; +} + +static int imx_pcie_wr_conf(struct pci_bus *bus, u32 devfn, + int where, int size, u32 val) +{ + struct imx_pcie_port *pp = bus_to_port(bus->number); + u32 va_address = 0, mask = 0, tmp = 0; + int ret = PCIBIOS_SUCCESSFUL; + + if (pp) { + if (devfn != 0) + return PCIBIOS_DEVICE_NOT_FOUND; + + va_address = (u32)dbi_base + (where & ~0x3); + } else + va_address = (u32)base + (PCIE_CONF_BUS(bus->number - 1) + + PCIE_CONF_DEV(PCI_SLOT(devfn)) + + PCIE_CONF_FUNC(PCI_FUNC(devfn)) + + PCIE_CONF_REG(where)); + + if (size == 4) { + writel(val, va_address); + goto exit; + } + + if (size == 2) + mask = ~(0xFFFF << ((where & 0x3) * 8)); + else if (size == 1) + mask = ~(0xFF << ((where & 0x3) * 8)); + else + ret = PCIBIOS_BAD_REGISTER_NUMBER; + + tmp = readl(va_address) & mask; + tmp |= val << ((where & 0x3) * 8); + writel(tmp, va_address); +exit: + + return ret; +} + +static struct pci_ops imx_pcie_ops = { + .read = imx_pcie_rd_conf, + .write = imx_pcie_wr_conf, +}; + +static struct pci_bus __init * +imx_pcie_scan_bus(int nr, struct pci_sys_data *sys) +{ + struct pci_bus *bus; + + if (nr < num_pcie_ports) { + bus = pci_scan_bus(sys->busnr, &imx_pcie_ops, sys); + } else { + bus = NULL; + BUG(); + } + + return bus; +} + +static int __init imx_pcie_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + return MXC_INT_PCIE_3; +} + +static struct hw_pci imx_pci __initdata = { + .nr_controllers = 1, + .swizzle = pci_std_swizzle, + .setup = imx_pcie_setup, + .scan = imx_pcie_scan_bus, + .map_irq = imx_pcie_map_irq, +}; + +/* PHY CR bus acess routines */ +static int pcie_phy_cr_ack_polling(int max_iterations, int exp_val) +{ + u32 temp_rd_data, wait_counter = 0; + + do { + temp_rd_data = readl(dbi_base + PHY_STS_R); + temp_rd_data = (temp_rd_data >> PCIE_CR_STAT_ACK_LOC) & 0x1; + wait_counter++; + } while ((wait_counter < max_iterations) && (temp_rd_data != exp_val)); + + if (temp_rd_data != exp_val) + return 0 ; + return 1 ; +} + +static int pcie_phy_cr_cap_addr(int addr) +{ + u32 temp_wr_data; + + /* write addr */ + temp_wr_data = addr << PCIE_CR_CTL_DATA_LOC ; + writel(temp_wr_data, dbi_base + PHY_CTRL_R); + + /* capture addr */ + temp_wr_data |= (0x1 << PCIE_CR_CTL_CAP_ADR_LOC); + writel(temp_wr_data, dbi_base + PHY_CTRL_R); + + /* wait for ack */ + if (!pcie_phy_cr_ack_polling(100, 1)) + return 0; + + /* deassert cap addr */ + temp_wr_data = addr << PCIE_CR_CTL_DATA_LOC; + writel(temp_wr_data, dbi_base + PHY_CTRL_R); + + /* wait for ack de-assetion */ + if (!pcie_phy_cr_ack_polling(100, 0)) + return 0 ; + + return 1 ; +} + +static int pcie_phy_cr_read(int addr , int *data) +{ + u32 temp_rd_data, temp_wr_data; + + /* write addr */ + /* cap addr */ + if (!pcie_phy_cr_cap_addr(addr)) + return 0; + + /* assert rd signal */ + temp_wr_data = 0x1 << PCIE_CR_CTL_RD_LOC; + writel(temp_wr_data, dbi_base + PHY_CTRL_R); + + /* wait for ack */ + if (!pcie_phy_cr_ack_polling(100, 1)) + return 0; + + /* after got ack return data */ + temp_rd_data = readl(dbi_base + PHY_STS_R); + *data = (temp_rd_data & (0xffff << PCIE_CR_STAT_DATA_LOC)) ; + + /* deassert rd signal */ + temp_wr_data = 0x0; + writel(temp_wr_data, dbi_base + PHY_CTRL_R); + + /* wait for ack de-assetion */ + if (!pcie_phy_cr_ack_polling(100, 0)) + return 0 ; + + return 1 ; + +} + +static int pcie_phy_cr_write(int addr, int data) +{ + u32 temp_wr_data; + + /* write addr */ + /* cap addr */ + if (!pcie_phy_cr_cap_addr(addr)) + return 0 ; + + temp_wr_data = data << PCIE_CR_CTL_DATA_LOC; + writel(temp_wr_data, dbi_base + PHY_CTRL_R); + + /* capture data */ + temp_wr_data |= (0x1 << PCIE_CR_CTL_CAP_DAT_LOC); + writel(temp_wr_data, dbi_base + PHY_CTRL_R); + + /* wait for ack */ + if (!pcie_phy_cr_ack_polling(100, 1)) + return 0 ; + + /* deassert cap data */ + temp_wr_data = data << PCIE_CR_CTL_DATA_LOC; + writel(temp_wr_data, dbi_base + PHY_CTRL_R); + + /* wait for ack de-assetion */ + if (!pcie_phy_cr_ack_polling(100, 0)) + return 0; + + /* assert wr signal */ + temp_wr_data = 0x1 << PCIE_CR_CTL_WR_LOC; + writel(temp_wr_data, dbi_base + PHY_CTRL_R); + + /* wait for ack */ + if (!pcie_phy_cr_ack_polling(100, 1)) + return 0; + + /* deassert wr signal */ + temp_wr_data = data << PCIE_CR_CTL_DATA_LOC; + writel(temp_wr_data, dbi_base + PHY_CTRL_R); + + /* wait for ack de-assetion */ + if (!pcie_phy_cr_ack_polling(100, 0)) + return 0; + + temp_wr_data = 0x0 ; + writel(temp_wr_data, dbi_base + PHY_CTRL_R); + + return 1 ; +} + +static void change_field(int *in, int start, int end, int val) +{ + int mask; + + mask = ((0xFFFFFFFF << start) ^ (0xFFFFFFFF << (end + 1))) & 0xFFFFFFFF; + *in = (*in & ~mask) | (val << start); +} + +static void imx_pcie_enable_controller(struct device *dev) +{ + struct clk *pcie_clk; + struct imx_pcie_platform_data *pdata = dev->platform_data; + + /* Enable PCIE power */ + gpio_request(pdata->pcie_pwr_en, "PCIE POWER_EN"); + + /* activate PCIE_PWR_EN */ + gpio_direction_output(pdata->pcie_pwr_en, 1); + + imx_pcie_clrset(iomuxc_gpr1_test_powerdown, 0 << 18, IOMUXC_GPR1); + +/* FIXME */ +#define PCIE_CLK "pcie_ref" + /* enable the clks */ + pcie_clk = clk_get(NULL, PCIE_CLK); + if (IS_ERR(pcie_clk)) { + pr_err("no pcie (?) clock.\n"); + } else if (clk_enable(pcie_clk)) { + pr_err("can't enable pcie clock.\n"); + clk_put(pcie_clk); + } + + imx_pcie_clrset(iomuxc_gpr1_pcie_ref_clk_en, 1 << 16, IOMUXC_GPR1); +} + +static void card_reset(struct device *dev) +{ + struct imx_pcie_platform_data *pdata = dev->platform_data; + + /* PCIE RESET */ + gpio_request(pdata->pcie_rst, "PCIE RESET"); + + /* activate PERST_B */ + gpio_direction_output(pdata->pcie_rst, 0); + + /* Add one reset to the pcie external device */ + msleep(100); + + /* deactive PERST_B */ + gpio_direction_output(pdata->pcie_rst, 1); +} + +static void __init add_pcie_port(void __iomem *base, void __iomem *dbi_base, + struct imx_pcie_platform_data *pdata) +{ + struct clk *pcie_clk; + + if (imx_pcie_link_up(dbi_base)) { + struct imx_pcie_port *pp = &imx_pcie_port[num_pcie_ports++]; + + pr_info("IMX PCIe port: link up.\n"); + + pp->index = 0; + pp->root_bus_nr = -1; + pp->base = base; + pp->dbi_base = dbi_base; + spin_lock_init(&pp->conf_lock); + memset(pp->res, 0, sizeof(pp->res)); + } else { + pr_info("IMX PCIe port: link down!\n"); + /* Release the clocks, and disable the power */ + + pcie_clk = clk_get(NULL, PCIE_CLK); + if (IS_ERR(pcie_clk)) + pr_err("no pcie clock.\n"); + + clk_disable(pcie_clk); + clk_put(pcie_clk); + + imx_pcie_clrset(iomuxc_gpr1_pcie_ref_clk_en, 0 << 16, + IOMUXC_GPR1); + + /* Disable PCIE power */ + gpio_request(pdata->pcie_pwr_en, "PCIE POWER_EN"); + + /* activate PCIE_PWR_EN */ + gpio_direction_output(pdata->pcie_pwr_en, 0); + + imx_pcie_clrset(iomuxc_gpr1_test_powerdown, 1 << 18, + IOMUXC_GPR1); + } +} + +static int imx_pcie_pltfm_probe(struct platform_device *pdev) +{ + struct resource *mem; + struct device *dev = &pdev->dev; + struct imx_pcie_platform_data *pdata = dev->platform_data; + + printk("imx_pcie_pltfm_probe\n"); + + printk("FIXME: preparing for Pcie\n"); + { + iomux_base = ioremap(MX6Q_IOMUXC_BASE_ADDR, SZ_16K); + printk("FIXME: %lx, mapped at %lx\n", MX6Q_IOMUXC_BASE_ADDR, iomux_base); + printk("FIXME: sanity check %lx\n", phys_to_virt(MX6Q_IOMUXC_BASE_ADDR)); + } + + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem) { + dev_err(dev, "no mmio space\n"); + return -EINVAL; + } + + base = ioremap_nocache(PCIE_ARB_END_ADDR - SZ_1M + 1, SZ_1M - SZ_16K); + if (!base) { + pr_err("error with ioremap in function %s\n", __func__); + return -EIO; + } + + dbi_base = devm_ioremap(dev, mem->start, resource_size(mem)); + if (!dbi_base) { + dev_err(dev, "can't map %pR\n", mem); + return -ENOMEM; + } + + printk("imx_pcie_pltfm_probe: clrsets\n"); + /* FIXME the field name should be aligned to RM */ + imx_pcie_clrset(iomuxc_gpr12_app_ltssm_enable, 0 << 10, IOMUXC_GPR12); + + printk("imx_pcie_pltfm_probe: clrsets1\n"); + + /* configure constant input signal to the pcie ctrl and phy */ + imx_pcie_clrset(iomuxc_gpr12_device_type, PCI_EXP_TYPE_ROOT_PORT << 12, + IOMUXC_GPR12); + imx_pcie_clrset(iomuxc_gpr12_los_level, 9 << 4, IOMUXC_GPR12); + + printk("imx_pcie_pltfm_probe: clrsets2\n"); + imx_pcie_clrset(iomuxc_gpr8_tx_deemph_gen1, 0 << 0, IOMUXC_GPR8); + imx_pcie_clrset(iomuxc_gpr8_tx_deemph_gen2_3p5db, 0 << 6, IOMUXC_GPR8); + imx_pcie_clrset(iomuxc_gpr8_tx_deemph_gen2_6db, 20 << 12, IOMUXC_GPR8); + imx_pcie_clrset(iomuxc_gpr8_tx_swing_full, 127 << 18, IOMUXC_GPR8); + imx_pcie_clrset(iomuxc_gpr8_tx_swing_low, 127 << 25, IOMUXC_GPR8); + + + printk("imx_pcie_pltfm_probe: controller\n"); + /* Enable the pwr, clks and so on */ + imx_pcie_enable_controller(dev); + + /* togle the external card's reset */ + card_reset(dev) ; + + usleep_range(3000, 4000); + imx_pcie_regions_setup(dbi_base); + usleep_range(3000, 4000); + + /* start link up */ + imx_pcie_clrset(iomuxc_gpr12_app_ltssm_enable, 1 << 10, IOMUXC_GPR12); + + /* add the pcie port */ + add_pcie_port(base, dbi_base, pdata); + + + printk("imx_pcie_pltfm_probe: common init\n"); + + pci_common_init(&imx_pci); + return 0; +} + +static int imx_pcie_pltfm_remove(struct platform_device *pdev) +{ + struct clk *pcie_clk; + struct device *dev = &pdev->dev; + struct imx_pcie_platform_data *pdata = dev->platform_data; + struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + /* Release clocks, and disable power */ + pcie_clk = clk_get(NULL, PCIE_CLK); + if (IS_ERR(pcie_clk)) + pr_err("no pcie clock.\n"); + + if (pcie_clk) { + clk_disable(pcie_clk); + clk_put(pcie_clk); + } + + imx_pcie_clrset(iomuxc_gpr1_pcie_ref_clk_en, 0 << 16, IOMUXC_GPR1); + + /* Disable PCIE power */ + gpio_request(pdata->pcie_pwr_en, "PCIE POWER_EN"); + + /* activate PCIE_PWR_EN */ + gpio_direction_output(pdata->pcie_pwr_en, 0); + + imx_pcie_clrset(iomuxc_gpr1_test_powerdown, 1 << 18, IOMUXC_GPR1); + + iounmap(base); + iounmap(dbi_base); + release_mem_region(iomem->start, resource_size(iomem)); + platform_set_drvdata(pdev, NULL); + + return 0; +} + +static struct platform_driver imx_pcie_pltfm_driver = { + .driver = { + .name = "imx-pcie", + .owner = THIS_MODULE, + }, + .probe = imx_pcie_pltfm_probe, + .remove = imx_pcie_pltfm_remove, +}; + +/*****************************************************************************\ + * * + * Driver init/exit * + * * +\*****************************************************************************/ + +static int __init imx_pcie_drv_init(void) +{ + return platform_driver_register(&imx_pcie_pltfm_driver); +} + +static void __exit imx_pcie_drv_exit(void) +{ + platform_driver_unregister(&imx_pcie_pltfm_driver); +} + +module_init(imx_pcie_drv_init); +module_exit(imx_pcie_drv_exit); + +MODULE_DESCRIPTION("i.MX PCIE platform driver"); +MODULE_LICENSE("GPL v2"); diff --git a/arch/arm/mach-imx/pcie.h b/arch/arm/mach-imx/pcie.h new file mode 100644 index 0000000..39efcae --- /dev/null +++ b/arch/arm/mach-imx/pcie.h @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef __ASM_ARCH_IMX_PCIE_H +#define __ASM_ARCH_IMX_PCIE_H + +/** + * struct imx_pcie_platform_data - optional platform data for pcie on i.MX + * + * @pcie_pwr_en: used for enable/disable pcie power (-EINVAL if unused) + * @pcie_rst: used for reset pcie ep (-EINVAL if unused) + * @pcie_wake_up: used for wake up (-EINVAL if unused) + * @pcie_dis: used for disable pcie ep (-EINVAL if unused) + */ + +struct imx_pcie_platform_data { + unsigned int pcie_pwr_en; + unsigned int pcie_rst; + unsigned int pcie_wake_up; + unsigned int pcie_dis; +}; + +/* FIXME: defines that may not belong here */ +#define PCIE_ARB_BASE_ADDR 0x01000000 +#define PCIE_ARB_END_ADDR 0x01FFFFFF +#define MXC_INT_PCIE_3 155 +#define MX6Q_IOMUXC_BASE_ADDR (AIPS1_OFF_BASE_ADDR + 0x60000) +#define AIPS1_ARB_BASE_ADDR 0x02000000 +#define ATZ1_BASE_ADDR AIPS1_ARB_BASE_ADDR +#define AIPS1_OFF_BASE_ADDR (ATZ1_BASE_ADDR + 0x80000) + +#define pci_std_swizzle pci_common_swizzle + +#endif /* __ASM_ARCH_IMX_PCIE_H */