From patchwork Thu Oct 17 12:38:44 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter De Schrijver X-Patchwork-Id: 3060761 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 29D31BF924 for ; Thu, 17 Oct 2013 12:53:17 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 36F1C203AD for ; Thu, 17 Oct 2013 12:53:12 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EE626202C0 for ; Thu, 17 Oct 2013 12:53:06 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWmuD-0007Ob-8z; Thu, 17 Oct 2013 12:42:22 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWmtT-0003R5-Qe; Thu, 17 Oct 2013 12:41:35 +0000 Received: from hqemgate15.nvidia.com ([216.228.121.64]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWmsb-0003He-5M for linux-arm-kernel@lists.infradead.org; Thu, 17 Oct 2013 12:40:59 +0000 Received: from hqnvupgp07.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com id ; Thu, 17 Oct 2013 05:39:41 -0700 Received: from hqemhub02.nvidia.com ([172.20.12.94]) by hqnvupgp07.nvidia.com (PGP Universal service); Thu, 17 Oct 2013 05:39:47 -0700 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Thu, 17 Oct 2013 05:39:47 -0700 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by hqemhub02.nvidia.com (172.20.150.31) with Microsoft SMTP Server id 8.3.327.1; Thu, 17 Oct 2013 05:39:47 -0700 Received: from thelma.nvidia.com (Not Verified[172.16.212.77]) by hqnvemgw01.nvidia.com with MailMarshal (v7,1,2,5326) id ; Thu, 17 Oct 2013 05:39:47 -0700 Received: from tbergstrom-lnx.nvidia.com (tbergstrom-lnx.nvidia.com [10.21.24.170]) by thelma.nvidia.com (8.13.8+Sun/8.8.8) with ESMTP id r9HCcnGc024637; Thu, 17 Oct 2013 05:39:44 -0700 (PDT) From: Peter De Schrijver To: Peter De Schrijver Subject: [PATCH v4 13/15] clk: tegra: introduce common gen4 super clock Date: Thu, 17 Oct 2013 15:38:44 +0300 Message-ID: <1382013526-12800-14-git-send-email-pdeschrijver@nvidia.com> X-Mailer: git-send-email 1.7.7.rc0.72.g4b5ea.dirty In-Reply-To: <1382013526-12800-1-git-send-email-pdeschrijver@nvidia.com> References: <1382013526-12800-1-git-send-email-pdeschrijver@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131017_084041_553109_BFA11013 X-CRM114-Status: GOOD ( 18.45 ) X-Spam-Score: -2.3 (--) Cc: Prashant Gaikwad , Mike Turquette , Stephen Warren , linux-kernel@vger.kernel.org, Thierry Reding , linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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 X-Spam-Status: No, score=-4.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Introduce a common function which performs super clock initialization for Tegra114 and beyond. Signed-off-by: Peter De Schrijver --- drivers/clk/tegra/Makefile | 1 + drivers/clk/tegra/clk-tegra-super-gen4.c | 151 ++++++++++++++++++++++++++++++ drivers/clk/tegra/clk-tegra114.c | 76 +--------------- drivers/clk/tegra/clk.h | 3 + 4 files changed, 157 insertions(+), 74 deletions(-) create mode 100644 drivers/clk/tegra/clk-tegra-super-gen4.c diff --git a/drivers/clk/tegra/Makefile b/drivers/clk/tegra/Makefile index a02e9a9..2d83741 100644 --- a/drivers/clk/tegra/Makefile +++ b/drivers/clk/tegra/Makefile @@ -10,6 +10,7 @@ obj-y += clk-tegra-audio.o obj-y += clk-tegra-periph.o obj-y += clk-tegra-pmc.o obj-y += clk-tegra-fixed.o +obj-y += clk-tegra-super-gen4.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += clk-tegra20.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += clk-tegra30.o obj-$(CONFIG_ARCH_TEGRA_114_SOC) += clk-tegra114.o diff --git a/drivers/clk/tegra/clk-tegra-super-gen4.c b/drivers/clk/tegra/clk-tegra-super-gen4.c new file mode 100644 index 0000000..161e00a --- /dev/null +++ b/drivers/clk/tegra/clk-tegra-super-gen4.c @@ -0,0 +1,151 @@ +/* + * Copyright (c) 2012, 2013, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see . + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "clk.h" +#include "clk-id.h" + +#define PLLX_BASE 0xe0 +#define PLLX_MISC 0xe4 +#define PLLX_MISC2 0x514 +#define PLLX_MISC3 0x518 + +#define PLL_BASE_LOCK BIT(27) +#define PLL_MISC_LOCK_ENABLE 18 + +#define CCLKG_BURST_POLICY 0x368 +#define CCLKLP_BURST_POLICY 0x370 +#define SCLK_BURST_POLICY 0x028 +#define SYSTEM_CLK_RATE 0x030 + +static DEFINE_SPINLOCK(sysrate_lock); + +static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4", + "pll_p", "pll_p_out2", "unused", + "clk_32k", "pll_m_out1" }; + +static const char *cclk_g_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m", + "pll_p", "pll_p_out4", "unused", + "unused", "pll_x" }; + +static const char *cclk_lp_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m", + "pll_p", "pll_p_out4", "unused", + "unused", "pll_x", "pll_x_out0" }; +static void __init tegra_sclk_init(void __iomem *clk_base, + struct tegra_clk *tegra_clks) +{ + struct clk *clk; + struct clk **dt_clk; + + /* SCLK */ + dt_clk = tegra_lookup_dt_id(tegra_clk_sclk, tegra_clks); + if (dt_clk) { + clk = tegra_clk_register_super_mux("sclk", sclk_parents, + ARRAY_SIZE(sclk_parents), + CLK_SET_RATE_PARENT, + clk_base + SCLK_BURST_POLICY, + 0, 4, 0, 0, NULL); + *dt_clk = clk; + } + + /* HCLK */ + dt_clk = tegra_lookup_dt_id(tegra_clk_hclk, tegra_clks); + if (dt_clk) { + clk = clk_register_divider(NULL, "hclk_div", "sclk", 0, + clk_base + SYSTEM_CLK_RATE, 4, 2, 0, + &sysrate_lock); + clk = clk_register_gate(NULL, "hclk", "hclk_div", + CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, + clk_base + SYSTEM_CLK_RATE, + 7, CLK_GATE_SET_TO_DISABLE, &sysrate_lock); + *dt_clk = clk; + } + + /* PCLK */ + dt_clk = tegra_lookup_dt_id(tegra_clk_pclk, tegra_clks); + if (!dt_clk) + return; + + clk = clk_register_divider(NULL, "pclk_div", "hclk", 0, + clk_base + SYSTEM_CLK_RATE, 0, 2, 0, + &sysrate_lock); + clk = clk_register_gate(NULL, "pclk", "pclk_div", CLK_SET_RATE_PARENT | + CLK_IGNORE_UNUSED, clk_base + SYSTEM_CLK_RATE, + 3, CLK_GATE_SET_TO_DISABLE, &sysrate_lock); + *dt_clk = clk; +} + +void __init tegra_super_clk_gen4_init(void __iomem *clk_base, + void __iomem *pmc_base, + struct tegra_clk *tegra_clks, + struct tegra_clk_pll_params *params) +{ + struct clk *clk; + struct clk **dt_clk; + + /* CCLKG */ + dt_clk = tegra_lookup_dt_id(tegra_clk_cclk_g, tegra_clks); + if (dt_clk) { + clk = tegra_clk_register_super_mux("cclk_g", cclk_g_parents, + ARRAY_SIZE(cclk_g_parents), + CLK_SET_RATE_PARENT, + clk_base + CCLKG_BURST_POLICY, + 0, 4, 0, 0, NULL); + *dt_clk = clk; + } + + /* CCLKLP */ + dt_clk = tegra_lookup_dt_id(tegra_clk_cclk_lp, tegra_clks); + if (dt_clk) { + clk = tegra_clk_register_super_mux("cclk_lp", cclk_lp_parents, + ARRAY_SIZE(cclk_lp_parents), + CLK_SET_RATE_PARENT, + clk_base + CCLKLP_BURST_POLICY, + 0, 4, 8, 9, NULL); + *dt_clk = clk; + } + + tegra_sclk_init(clk_base, tegra_clks); + + /* PLLX */ + dt_clk = tegra_lookup_dt_id(tegra_clk_pll_x, tegra_clks); + if (!dt_clk) + return; + + clk = tegra_clk_register_pllxc("pll_x", "pll_ref", clk_base, + pmc_base, CLK_IGNORE_UNUSED, params, NULL); + *dt_clk = clk; + + /* PLLX_OUT0 */ + + dt_clk = tegra_lookup_dt_id(tegra_clk_pll_x_out0, tegra_clks); + if (!dt_clk) + return; + clk = clk_register_fixed_factor(NULL, "pll_x_out0", "pll_x", + CLK_SET_RATE_PARENT, 1, 2); + *dt_clk = clk; + +} + diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c index 87a2162..b17feea 100644 --- a/drivers/clk/tegra/clk-tegra114.c +++ b/drivers/clk/tegra/clk-tegra114.c @@ -119,9 +119,6 @@ #define PLLXC_SW_MAX_P 6 #define CCLKG_BURST_POLICY 0x368 -#define CCLKLP_BURST_POLICY 0x370 -#define SCLK_BURST_POLICY 0x028 -#define SYSTEM_CLK_RATE 0x030 #define UTMIP_PLL_CFG2 0x488 #define UTMIP_PLL_CFG2_STABLE_COUNT(x) (((x) & 0xffff) << 6) @@ -175,7 +172,6 @@ static DEFINE_SPINLOCK(pll_d_lock); static DEFINE_SPINLOCK(pll_d2_lock); static DEFINE_SPINLOCK(pll_u_lock); static DEFINE_SPINLOCK(pll_re_lock); -static DEFINE_SPINLOCK(sysrate_lock); static struct div_nmp pllxc_nmp = { .divm_shift = 0, @@ -1117,16 +1113,6 @@ static void __init tegra114_pll_init(void __iomem *clk_base, clk = clk_register_fixed_factor(NULL, "pll_m_ud", "pll_m", CLK_SET_RATE_PARENT, 1, 1); - /* PLLX */ - clk = tegra_clk_register_pllxc("pll_x", "pll_ref", clk_base, - pmc, CLK_IGNORE_UNUSED, &pll_x_params, NULL); - clks[TEGRA114_CLK_PLL_X] = clk; - - /* PLLX_OUT0 */ - clk = clk_register_fixed_factor(NULL, "pll_x_out0", "pll_x", - CLK_SET_RATE_PARENT, 1, 2); - clks[TEGRA114_CLK_PLL_X_OUT0] = clk; - /* PLLU */ val = readl(clk_base + pll_u_params.base_reg); val &= ~BIT(24); /* disable PLLU_OVERRIDE */ @@ -1195,65 +1181,6 @@ static void __init tegra114_pll_init(void __iomem *clk_base, clks[TEGRA114_CLK_PLL_E_OUT0] = clk; } -static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4", - "pll_p", "pll_p_out2", "unused", - "clk_32k", "pll_m_out1" }; - -static const char *cclk_g_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m", - "pll_p", "pll_p_out4", "unused", - "unused", "pll_x" }; - -static const char *cclk_lp_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m", - "pll_p", "pll_p_out4", "unused", - "unused", "pll_x", "pll_x_out0" }; - -static void __init tegra114_super_clk_init(void __iomem *clk_base) -{ - struct clk *clk; - - /* CCLKG */ - clk = tegra_clk_register_super_mux("cclk_g", cclk_g_parents, - ARRAY_SIZE(cclk_g_parents), - CLK_SET_RATE_PARENT, - clk_base + CCLKG_BURST_POLICY, - 0, 4, 0, 0, NULL); - clks[TEGRA114_CLK_CCLK_G] = clk; - - /* CCLKLP */ - clk = tegra_clk_register_super_mux("cclk_lp", cclk_lp_parents, - ARRAY_SIZE(cclk_lp_parents), - CLK_SET_RATE_PARENT, - clk_base + CCLKLP_BURST_POLICY, - 0, 4, 8, 9, NULL); - clks[TEGRA114_CLK_CCLK_LP] = clk; - - /* SCLK */ - clk = tegra_clk_register_super_mux("sclk", sclk_parents, - ARRAY_SIZE(sclk_parents), - CLK_SET_RATE_PARENT, - clk_base + SCLK_BURST_POLICY, - 0, 4, 0, 0, NULL); - clks[TEGRA114_CLK_SCLK] = clk; - - /* HCLK */ - clk = clk_register_divider(NULL, "hclk_div", "sclk", 0, - clk_base + SYSTEM_CLK_RATE, 4, 2, 0, - &sysrate_lock); - clk = clk_register_gate(NULL, "hclk", "hclk_div", CLK_SET_RATE_PARENT | - CLK_IGNORE_UNUSED, clk_base + SYSTEM_CLK_RATE, - 7, CLK_GATE_SET_TO_DISABLE, &sysrate_lock); - clks[TEGRA114_CLK_HCLK] = clk; - - /* PCLK */ - clk = clk_register_divider(NULL, "pclk_div", "hclk", 0, - clk_base + SYSTEM_CLK_RATE, 0, 2, 0, - &sysrate_lock); - clk = clk_register_gate(NULL, "pclk", "pclk_div", CLK_SET_RATE_PARENT | - CLK_IGNORE_UNUSED, clk_base + SYSTEM_CLK_RATE, - 3, CLK_GATE_SET_TO_DISABLE, &sysrate_lock); - clks[TEGRA114_CLK_PCLK] = clk; -} - static __init void tegra114_periph_clk_init(void __iomem *clk_base, void __iomem *pmc_base) { @@ -1544,7 +1471,8 @@ static void __init tegra114_clock_init(struct device_node *np) tegra114_periph_clk_init(clk_base, pmc_base); tegra_audio_clk_init(clk_base, pmc_base, tegra114_clks, &pll_a_params); tegra_pmc_clk_init(pmc_base, tegra114_clks); - tegra114_super_clk_init(clk_base); + tegra_super_clk_gen4_init(clk_base, pmc_base, tegra114_clks, + &pll_x_params); tegra_add_of_provider(np); tegra_register_devclks(devclks, ARRAY_SIZE(devclks)); diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h index 2d48817..05abfc5 100644 --- a/drivers/clk/tegra/clk.h +++ b/drivers/clk/tegra/clk.h @@ -610,6 +610,9 @@ int tegra_osc_clk_init(void __iomem *clk_base, struct tegra_clk *tegra_clks, unsigned long *input_freqs, int num, unsigned long *osc_freq, unsigned long *pll_ref_freq); +void tegra_super_clk_gen4_init(void __iomem *clk_base, + void __iomem *pmc_base, struct tegra_clk *tegra_clks, + struct tegra_clk_pll_params *pll_params); void tegra114_clock_tune_cpu_trimmers_high(void); void tegra114_clock_tune_cpu_trimmers_low(void);