From patchwork Fri May 19 08:46:04 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 9736573 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C23B06034C for ; Fri, 19 May 2017 08:49:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A829F288C4 for ; Fri, 19 May 2017 08:49:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9D2D7288E7; Fri, 19 May 2017 08:49:11 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D30B1288D2 for ; Fri, 19 May 2017 08:49:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751994AbdESItJ (ORCPT ); Fri, 19 May 2017 04:49:09 -0400 Received: from albert.telenet-ops.be ([195.130.137.90]:50660 "EHLO albert.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752078AbdESIqo (ORCPT ); Fri, 19 May 2017 04:46:44 -0400 Received: from ayla.of.borg ([84.193.137.253]) by albert.telenet-ops.be with bizsmtp id N8mi1v00c5UCtCs068miYZ; Fri, 19 May 2017 10:46:42 +0200 Received: from ramsan.of.borg ([192.168.97.29] helo=ramsan) by ayla.of.borg with esmtp (Exim 4.86_2) (envelope-from ) id 1dBdYY-00066b-Im; Fri, 19 May 2017 10:46:42 +0200 Received: from geert by ramsan with local (Exim 4.86_2) (envelope-from ) id 1dBdYY-0005gm-Hl; Fri, 19 May 2017 10:46:42 +0200 From: Geert Uytterhoeven To: Michael Turquette , Stephen Boyd Cc: Simon Horman , Magnus Damm , linux-clk@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH v2 09/10] clk: renesas: r8a7792: Add new CPG/MSSR driver Date: Fri, 19 May 2017 10:46:04 +0200 Message-Id: <1495183565-21679-10-git-send-email-geert+renesas@glider.be> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1495183565-21679-1-git-send-email-geert+renesas@glider.be> References: <1495183565-21679-1-git-send-email-geert+renesas@glider.be> Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a new R-Car V2H Clock Pulse Generator / Module Standby and Software Reset driver, using the CPG/MSSR driver core. This will enable support for module resets, which are not supported by the existing driver. The old driver can still be used through a Kconfig option, to preserve backward compatibility with old DTBs. Signed-off-by: Geert Uytterhoeven --- v2: - Rebase, - Add more rationale. --- drivers/clk/renesas/Kconfig | 5 +- drivers/clk/renesas/Makefile | 1 + drivers/clk/renesas/r8a7792-cpg-mssr.c | 221 +++++++++++++++++++++++++++++++++ drivers/clk/renesas/renesas-cpg-mssr.c | 6 + drivers/clk/renesas/renesas-cpg-mssr.h | 1 + 5 files changed, 232 insertions(+), 2 deletions(-) create mode 100644 drivers/clk/renesas/r8a7792-cpg-mssr.c diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig index 9826ac6a7596fd69..076804f9f02dc83c 100644 --- a/drivers/clk/renesas/Kconfig +++ b/drivers/clk/renesas/Kconfig @@ -21,7 +21,7 @@ if CLK_RENESAS config CLK_RENESAS_LEGACY bool "Legacy DT clock support" - depends on CLK_R8A7790 || CLK_R8A7791 + depends on CLK_R8A7790 || CLK_R8A7791 || CLK_R8A7792 default y help Enable backward compatibility with old device trees describing a @@ -77,7 +77,8 @@ config CLK_R8A7791 config CLK_R8A7792 bool - select CLK_RCAR_GEN2 + select CLK_RCAR_GEN2 if CLK_RENESAS_LEGACY + select CLK_RCAR_GEN2_CPG config CLK_R8A7794 bool diff --git a/drivers/clk/renesas/Makefile b/drivers/clk/renesas/Makefile index 7f70a2a1c514e91f..f14a4e5d629bfc85 100644 --- a/drivers/clk/renesas/Makefile +++ b/drivers/clk/renesas/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_CLK_R8A7778) += clk-r8a7778.o obj-$(CONFIG_CLK_R8A7779) += clk-r8a7779.o obj-$(CONFIG_CLK_R8A7790) += r8a7790-cpg-mssr.o obj-$(CONFIG_CLK_R8A7791) += r8a7791-cpg-mssr.o +obj-$(CONFIG_CLK_R8A7792) += r8a7792-cpg-mssr.o obj-$(CONFIG_CLK_R8A7795) += r8a7795-cpg-mssr.o obj-$(CONFIG_CLK_R8A7796) += r8a7796-cpg-mssr.o obj-$(CONFIG_CLK_SH73A0) += clk-sh73a0.o diff --git a/drivers/clk/renesas/r8a7792-cpg-mssr.c b/drivers/clk/renesas/r8a7792-cpg-mssr.c new file mode 100644 index 0000000000000000..a832b9b6f7b0dde8 --- /dev/null +++ b/drivers/clk/renesas/r8a7792-cpg-mssr.c @@ -0,0 +1,221 @@ +/* + * r8a7792 Clock Pulse Generator / Module Standby and Software Reset + * + * Copyright (C) 2017 Glider bvba + * + * Based on clk-rcar-gen2.c + * + * Copyright (C) 2013 Ideas On Board SPRL + * + * 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; version 2 of the License. + */ + +#include +#include +#include +#include + +#include + +#include "renesas-cpg-mssr.h" +#include "rcar-gen2-cpg.h" + +enum clk_ids { + /* Core Clock Outputs exported to DT */ + LAST_DT_CORE_CLK = R8A7792_CLK_OSC, + + /* External Input Clocks */ + CLK_EXTAL, + + /* Internal Core Clocks */ + CLK_MAIN, + CLK_PLL0, + CLK_PLL1, + CLK_PLL3, + CLK_PLL1_DIV2, + + /* Module Clocks */ + MOD_CLK_BASE +}; + +static const struct cpg_core_clk r8a7792_core_clks[] __initconst = { + /* External Clock Inputs */ + DEF_INPUT("extal", CLK_EXTAL), + + /* Internal Core Clocks */ + DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN2_MAIN, CLK_EXTAL), + DEF_BASE(".pll0", CLK_PLL0, CLK_TYPE_GEN2_PLL0, CLK_MAIN), + DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN2_PLL1, CLK_MAIN), + DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN2_PLL3, CLK_MAIN), + + DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1), + + /* Core Clock Outputs */ + DEF_BASE("lb", R8A7792_CLK_LB, CLK_TYPE_GEN2_LB, CLK_PLL1), + DEF_BASE("qspi", R8A7792_CLK_QSPI, CLK_TYPE_GEN2_QSPI, CLK_PLL1_DIV2), + + DEF_FIXED("z", R8A7792_CLK_Z, CLK_PLL0, 1, 1), + DEF_FIXED("zg", R8A7792_CLK_ZG, CLK_PLL1, 5, 1), + DEF_FIXED("zx", R8A7792_CLK_ZX, CLK_PLL1, 3, 1), + DEF_FIXED("zs", R8A7792_CLK_ZS, CLK_PLL1, 6, 1), + DEF_FIXED("hp", R8A7792_CLK_HP, CLK_PLL1, 12, 1), + DEF_FIXED("i", R8A7792_CLK_I, CLK_PLL1, 3, 1), + DEF_FIXED("b", R8A7792_CLK_B, CLK_PLL1, 12, 1), + DEF_FIXED("p", R8A7792_CLK_P, CLK_PLL1, 24, 1), + DEF_FIXED("cl", R8A7792_CLK_CL, CLK_PLL1, 48, 1), + DEF_FIXED("m2", R8A7792_CLK_M2, CLK_PLL1, 8, 1), + DEF_FIXED("imp", R8A7792_CLK_IMP, CLK_PLL1, 4, 1), + DEF_FIXED("zb3", R8A7792_CLK_ZB3, CLK_PLL3, 4, 1), + DEF_FIXED("zb3d2", R8A7792_CLK_ZB3D2, CLK_PLL3, 8, 1), + DEF_FIXED("ddr", R8A7792_CLK_DDR, CLK_PLL3, 8, 1), + DEF_FIXED("sd", R8A7792_CLK_SD, CLK_PLL1_DIV2, 8, 1), + DEF_FIXED("mp", R8A7792_CLK_MP, CLK_PLL1_DIV2, 15, 1), + DEF_FIXED("cp", R8A7792_CLK_CP, CLK_PLL1, 48, 1), + DEF_FIXED("cpex", R8A7792_CLK_CPEX, CLK_EXTAL, 2, 1), + DEF_FIXED("rcan", R8A7792_CLK_RCAN, CLK_PLL1_DIV2, 49, 1), + DEF_FIXED("r", R8A7792_CLK_R, CLK_PLL1, 49152, 1), + DEF_FIXED("osc", R8A7792_CLK_OSC, CLK_PLL1, 12288, 1), +}; + +static const struct mssr_mod_clk r8a7792_mod_clks[] __initconst = { + DEF_MOD("msiof0", 0, R8A7792_CLK_MP), + DEF_MOD("jpu", 106, R8A7792_CLK_M2), + DEF_MOD("tmu1", 111, R8A7792_CLK_P), + DEF_MOD("3dg", 112, R8A7792_CLK_ZG), + DEF_MOD("2d-dmac", 115, R8A7792_CLK_ZS), + DEF_MOD("tmu3", 121, R8A7792_CLK_P), + DEF_MOD("tmu2", 122, R8A7792_CLK_P), + DEF_MOD("cmt0", 124, R8A7792_CLK_R), + DEF_MOD("tmu0", 125, R8A7792_CLK_CP), + DEF_MOD("vsp1du1", 127, R8A7792_CLK_ZS), + DEF_MOD("vsp1du0", 128, R8A7792_CLK_ZS), + DEF_MOD("vsp1-sy", 131, R8A7792_CLK_ZS), + DEF_MOD("msiof1", 208, R8A7792_CLK_MP), + DEF_MOD("sys-dmac1", 218, R8A7792_CLK_ZS), + DEF_MOD("sys-dmac0", 219, R8A7792_CLK_ZS), + DEF_MOD("tpu0", 304, R8A7792_CLK_CP), + DEF_MOD("sdhi0", 314, R8A7792_CLK_SD), + DEF_MOD("cmt1", 329, R8A7792_CLK_R), + DEF_MOD("irqc", 407, R8A7792_CLK_CP), + DEF_MOD("intc-sys", 408, R8A7792_CLK_ZS), + DEF_MOD("audio-dmac0", 502, R8A7792_CLK_HP), + DEF_MOD("thermal", 522, CLK_EXTAL), + DEF_MOD("pwm", 523, R8A7792_CLK_P), + DEF_MOD("hscif1", 716, R8A7792_CLK_ZS), + DEF_MOD("hscif0", 717, R8A7792_CLK_ZS), + DEF_MOD("scif3", 718, R8A7792_CLK_P), + DEF_MOD("scif2", 719, R8A7792_CLK_P), + DEF_MOD("scif1", 720, R8A7792_CLK_P), + DEF_MOD("scif0", 721, R8A7792_CLK_P), + DEF_MOD("du1", 723, R8A7792_CLK_ZX), + DEF_MOD("du0", 724, R8A7792_CLK_ZX), + DEF_MOD("vin5", 804, R8A7792_CLK_ZG), + DEF_MOD("vin4", 805, R8A7792_CLK_ZG), + DEF_MOD("vin3", 808, R8A7792_CLK_ZG), + DEF_MOD("vin2", 809, R8A7792_CLK_ZG), + DEF_MOD("vin1", 810, R8A7792_CLK_ZG), + DEF_MOD("vin0", 811, R8A7792_CLK_ZG), + DEF_MOD("etheravb", 812, R8A7792_CLK_HP), + DEF_MOD("gyro-adc", 901, R8A7792_CLK_P), + DEF_MOD("gpio7", 904, R8A7792_CLK_CP), + DEF_MOD("gpio6", 905, R8A7792_CLK_CP), + DEF_MOD("gpio5", 907, R8A7792_CLK_CP), + DEF_MOD("gpio4", 908, R8A7792_CLK_CP), + DEF_MOD("gpio3", 909, R8A7792_CLK_CP), + DEF_MOD("gpio2", 910, R8A7792_CLK_CP), + DEF_MOD("gpio1", 911, R8A7792_CLK_CP), + DEF_MOD("gpio0", 912, R8A7792_CLK_CP), + DEF_MOD("gpio11", 913, R8A7792_CLK_CP), + DEF_MOD("gpio10", 914, R8A7792_CLK_CP), + DEF_MOD("can1", 915, R8A7792_CLK_P), + DEF_MOD("can0", 916, R8A7792_CLK_P), + DEF_MOD("qspi_mod", 917, R8A7792_CLK_QSPI), + DEF_MOD("gpio9", 919, R8A7792_CLK_CP), + DEF_MOD("gpio8", 921, R8A7792_CLK_CP), + DEF_MOD("i2c5", 925, R8A7792_CLK_HP), + DEF_MOD("iicdvfs", 926, R8A7792_CLK_CP), + DEF_MOD("i2c4", 927, R8A7792_CLK_HP), + DEF_MOD("i2c3", 928, R8A7792_CLK_HP), + DEF_MOD("i2c2", 929, R8A7792_CLK_HP), + DEF_MOD("i2c1", 930, R8A7792_CLK_HP), + DEF_MOD("i2c0", 931, R8A7792_CLK_HP), + DEF_MOD("ssi-all", 1005, R8A7792_CLK_P), + DEF_MOD("ssi4", 1011, MOD_CLK_ID(1005)), + DEF_MOD("ssi3", 1012, MOD_CLK_ID(1005)), +}; + +static const unsigned int r8a7792_crit_mod_clks[] __initconst = { + MOD_CLK_ID(408), /* INTC-SYS (GIC) */ +}; + +/* + * CPG Clock Data + */ + +/* + * MD EXTAL PLL0 PLL1 PLL3 + * 14 13 19 (MHz) *1 *2 + *--------------------------------------------------- + * 0 0 0 15 x200/3 x208/2 x106 + * 0 0 1 15 x200/3 x208/2 x88 + * 0 1 0 20 x150/3 x156/2 x80 + * 0 1 1 20 x150/3 x156/2 x66 + * 1 0 0 26 / 2 x230/3 x240/2 x122 + * 1 0 1 26 / 2 x230/3 x240/2 x102 + * 1 1 0 30 / 2 x200/3 x208/2 x106 + * 1 1 1 30 / 2 x200/3 x208/2 x88 + * + * *1 : Table 7.5b indicates VCO output (PLL0 = VCO/3) + * *2 : Table 7.5b indicates VCO output (PLL1 = VCO/2) + */ +#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 12) | \ + (((md) & BIT(13)) >> 12) | \ + (((md) & BIT(19)) >> 19)) +static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[8] __initconst = { + { 1, 208, 106, 200 }, + { 1, 208, 88, 200 }, + { 1, 156, 80, 150 }, + { 1, 156, 66, 150 }, + { 2, 240, 122, 230 }, + { 2, 240, 102, 230 }, + { 2, 208, 106, 200 }, + { 2, 208, 88, 200 }, +}; + +static int __init r8a7792_cpg_mssr_init(struct device *dev) +{ + const struct rcar_gen2_cpg_pll_config *cpg_pll_config; + u32 cpg_mode; + int error; + + error = rcar_rst_read_mode_pins(&cpg_mode); + if (error) + return error; + + cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)]; + + return rcar_gen2_cpg_init(cpg_pll_config, 3, cpg_mode); +} + +const struct cpg_mssr_info r8a7792_cpg_mssr_info __initconst = { + /* Core Clocks */ + .core_clks = r8a7792_core_clks, + .num_core_clks = ARRAY_SIZE(r8a7792_core_clks), + .last_dt_core_clk = LAST_DT_CORE_CLK, + .num_total_core_clks = MOD_CLK_BASE, + + /* Module Clocks */ + .mod_clks = r8a7792_mod_clks, + .num_mod_clks = ARRAY_SIZE(r8a7792_mod_clks), + .num_hw_mod_clks = 12 * 32, + + /* Critical Module Clocks */ + .crit_mod_clks = r8a7792_crit_mod_clks, + .num_crit_mod_clks = ARRAY_SIZE(r8a7792_crit_mod_clks), + + /* Callbacks */ + .init = r8a7792_cpg_mssr_init, + .cpg_clk_register = rcar_gen2_cpg_clk_register, +}; diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c b/drivers/clk/renesas/renesas-cpg-mssr.c index ea6a47148030c208..067d0d84f4449b0a 100644 --- a/drivers/clk/renesas/renesas-cpg-mssr.c +++ b/drivers/clk/renesas/renesas-cpg-mssr.c @@ -656,6 +656,12 @@ static const struct of_device_id cpg_mssr_match[] = { .data = &r8a7791_cpg_mssr_info, }, #endif +#ifdef CONFIG_CLK_R8A7792 + { + .compatible = "renesas,r8a7792-cpg-mssr", + .data = &r8a7792_cpg_mssr_info, + }, +#endif #ifdef CONFIG_CLK_R8A7795 { .compatible = "renesas,r8a7795-cpg-mssr", diff --git a/drivers/clk/renesas/renesas-cpg-mssr.h b/drivers/clk/renesas/renesas-cpg-mssr.h index c93f36c471a32841..07d53fa3e867fa7b 100644 --- a/drivers/clk/renesas/renesas-cpg-mssr.h +++ b/drivers/clk/renesas/renesas-cpg-mssr.h @@ -134,6 +134,7 @@ extern const struct cpg_mssr_info r8a7743_cpg_mssr_info; extern const struct cpg_mssr_info r8a7745_cpg_mssr_info; extern const struct cpg_mssr_info r8a7790_cpg_mssr_info; extern const struct cpg_mssr_info r8a7791_cpg_mssr_info; +extern const struct cpg_mssr_info r8a7792_cpg_mssr_info; extern const struct cpg_mssr_info r8a7795_cpg_mssr_info; extern const struct cpg_mssr_info r8a7796_cpg_mssr_info;