clk: renesas: r8a7792: Add new CPG/MSSR driver
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 <geert+renesas@glider.be>
This commit is contained in:
Geert Uytterhoeven
parent
6449ab8141
commit
fd3c2f3826
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@ -21,7 +21,7 @@ if CLK_RENESAS
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config CLK_RENESAS_LEGACY
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bool "Legacy DT clock support"
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depends on CLK_R8A7790 || CLK_R8A7791
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depends on CLK_R8A7790 || CLK_R8A7791 || CLK_R8A7792
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default y
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help
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Enable backward compatibility with old device trees describing a
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@ -77,7 +77,8 @@ config CLK_R8A7791
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config CLK_R8A7792
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bool
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select CLK_RCAR_GEN2
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select CLK_RCAR_GEN2 if CLK_RENESAS_LEGACY
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select CLK_RCAR_GEN2_CPG
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config CLK_R8A7794
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bool
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@ -9,6 +9,7 @@ obj-$(CONFIG_CLK_R8A7778) += clk-r8a7778.o
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obj-$(CONFIG_CLK_R8A7779) += clk-r8a7779.o
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obj-$(CONFIG_CLK_R8A7790) += r8a7790-cpg-mssr.o
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obj-$(CONFIG_CLK_R8A7791) += r8a7791-cpg-mssr.o
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obj-$(CONFIG_CLK_R8A7792) += r8a7792-cpg-mssr.o
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obj-$(CONFIG_CLK_R8A7795) += r8a7795-cpg-mssr.o
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obj-$(CONFIG_CLK_R8A7796) += r8a7796-cpg-mssr.o
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obj-$(CONFIG_CLK_SH73A0) += clk-sh73a0.o
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@ -0,0 +1,221 @@
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/*
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* r8a7792 Clock Pulse Generator / Module Standby and Software Reset
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*
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* Copyright (C) 2017 Glider bvba
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*
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* Based on clk-rcar-gen2.c
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*
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* Copyright (C) 2013 Ideas On Board SPRL
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*/
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/soc/renesas/rcar-rst.h>
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#include <dt-bindings/clock/r8a7792-cpg-mssr.h>
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#include "renesas-cpg-mssr.h"
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#include "rcar-gen2-cpg.h"
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enum clk_ids {
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/* Core Clock Outputs exported to DT */
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LAST_DT_CORE_CLK = R8A7792_CLK_OSC,
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/* External Input Clocks */
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CLK_EXTAL,
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/* Internal Core Clocks */
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CLK_MAIN,
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CLK_PLL0,
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CLK_PLL1,
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CLK_PLL3,
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CLK_PLL1_DIV2,
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/* Module Clocks */
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MOD_CLK_BASE
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};
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static const struct cpg_core_clk r8a7792_core_clks[] __initconst = {
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/* External Clock Inputs */
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DEF_INPUT("extal", CLK_EXTAL),
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/* Internal Core Clocks */
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DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN2_MAIN, CLK_EXTAL),
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DEF_BASE(".pll0", CLK_PLL0, CLK_TYPE_GEN2_PLL0, CLK_MAIN),
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DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN2_PLL1, CLK_MAIN),
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DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN2_PLL3, CLK_MAIN),
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DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
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/* Core Clock Outputs */
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DEF_BASE("lb", R8A7792_CLK_LB, CLK_TYPE_GEN2_LB, CLK_PLL1),
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DEF_BASE("qspi", R8A7792_CLK_QSPI, CLK_TYPE_GEN2_QSPI, CLK_PLL1_DIV2),
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DEF_FIXED("z", R8A7792_CLK_Z, CLK_PLL0, 1, 1),
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DEF_FIXED("zg", R8A7792_CLK_ZG, CLK_PLL1, 5, 1),
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DEF_FIXED("zx", R8A7792_CLK_ZX, CLK_PLL1, 3, 1),
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DEF_FIXED("zs", R8A7792_CLK_ZS, CLK_PLL1, 6, 1),
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DEF_FIXED("hp", R8A7792_CLK_HP, CLK_PLL1, 12, 1),
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DEF_FIXED("i", R8A7792_CLK_I, CLK_PLL1, 3, 1),
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DEF_FIXED("b", R8A7792_CLK_B, CLK_PLL1, 12, 1),
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DEF_FIXED("p", R8A7792_CLK_P, CLK_PLL1, 24, 1),
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DEF_FIXED("cl", R8A7792_CLK_CL, CLK_PLL1, 48, 1),
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DEF_FIXED("m2", R8A7792_CLK_M2, CLK_PLL1, 8, 1),
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DEF_FIXED("imp", R8A7792_CLK_IMP, CLK_PLL1, 4, 1),
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DEF_FIXED("zb3", R8A7792_CLK_ZB3, CLK_PLL3, 4, 1),
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DEF_FIXED("zb3d2", R8A7792_CLK_ZB3D2, CLK_PLL3, 8, 1),
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DEF_FIXED("ddr", R8A7792_CLK_DDR, CLK_PLL3, 8, 1),
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DEF_FIXED("sd", R8A7792_CLK_SD, CLK_PLL1_DIV2, 8, 1),
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DEF_FIXED("mp", R8A7792_CLK_MP, CLK_PLL1_DIV2, 15, 1),
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DEF_FIXED("cp", R8A7792_CLK_CP, CLK_PLL1, 48, 1),
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DEF_FIXED("cpex", R8A7792_CLK_CPEX, CLK_EXTAL, 2, 1),
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DEF_FIXED("rcan", R8A7792_CLK_RCAN, CLK_PLL1_DIV2, 49, 1),
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DEF_FIXED("r", R8A7792_CLK_R, CLK_PLL1, 49152, 1),
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DEF_FIXED("osc", R8A7792_CLK_OSC, CLK_PLL1, 12288, 1),
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};
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static const struct mssr_mod_clk r8a7792_mod_clks[] __initconst = {
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DEF_MOD("msiof0", 0, R8A7792_CLK_MP),
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DEF_MOD("jpu", 106, R8A7792_CLK_M2),
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DEF_MOD("tmu1", 111, R8A7792_CLK_P),
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DEF_MOD("3dg", 112, R8A7792_CLK_ZG),
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DEF_MOD("2d-dmac", 115, R8A7792_CLK_ZS),
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DEF_MOD("tmu3", 121, R8A7792_CLK_P),
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DEF_MOD("tmu2", 122, R8A7792_CLK_P),
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DEF_MOD("cmt0", 124, R8A7792_CLK_R),
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DEF_MOD("tmu0", 125, R8A7792_CLK_CP),
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DEF_MOD("vsp1du1", 127, R8A7792_CLK_ZS),
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DEF_MOD("vsp1du0", 128, R8A7792_CLK_ZS),
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DEF_MOD("vsp1-sy", 131, R8A7792_CLK_ZS),
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DEF_MOD("msiof1", 208, R8A7792_CLK_MP),
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DEF_MOD("sys-dmac1", 218, R8A7792_CLK_ZS),
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DEF_MOD("sys-dmac0", 219, R8A7792_CLK_ZS),
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DEF_MOD("tpu0", 304, R8A7792_CLK_CP),
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DEF_MOD("sdhi0", 314, R8A7792_CLK_SD),
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DEF_MOD("cmt1", 329, R8A7792_CLK_R),
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DEF_MOD("irqc", 407, R8A7792_CLK_CP),
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DEF_MOD("intc-sys", 408, R8A7792_CLK_ZS),
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DEF_MOD("audio-dmac0", 502, R8A7792_CLK_HP),
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DEF_MOD("thermal", 522, CLK_EXTAL),
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DEF_MOD("pwm", 523, R8A7792_CLK_P),
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DEF_MOD("hscif1", 716, R8A7792_CLK_ZS),
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DEF_MOD("hscif0", 717, R8A7792_CLK_ZS),
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DEF_MOD("scif3", 718, R8A7792_CLK_P),
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DEF_MOD("scif2", 719, R8A7792_CLK_P),
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DEF_MOD("scif1", 720, R8A7792_CLK_P),
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DEF_MOD("scif0", 721, R8A7792_CLK_P),
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DEF_MOD("du1", 723, R8A7792_CLK_ZX),
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DEF_MOD("du0", 724, R8A7792_CLK_ZX),
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DEF_MOD("vin5", 804, R8A7792_CLK_ZG),
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DEF_MOD("vin4", 805, R8A7792_CLK_ZG),
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DEF_MOD("vin3", 808, R8A7792_CLK_ZG),
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DEF_MOD("vin2", 809, R8A7792_CLK_ZG),
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DEF_MOD("vin1", 810, R8A7792_CLK_ZG),
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DEF_MOD("vin0", 811, R8A7792_CLK_ZG),
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DEF_MOD("etheravb", 812, R8A7792_CLK_HP),
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DEF_MOD("gyro-adc", 901, R8A7792_CLK_P),
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DEF_MOD("gpio7", 904, R8A7792_CLK_CP),
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DEF_MOD("gpio6", 905, R8A7792_CLK_CP),
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DEF_MOD("gpio5", 907, R8A7792_CLK_CP),
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DEF_MOD("gpio4", 908, R8A7792_CLK_CP),
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DEF_MOD("gpio3", 909, R8A7792_CLK_CP),
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DEF_MOD("gpio2", 910, R8A7792_CLK_CP),
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DEF_MOD("gpio1", 911, R8A7792_CLK_CP),
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DEF_MOD("gpio0", 912, R8A7792_CLK_CP),
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DEF_MOD("gpio11", 913, R8A7792_CLK_CP),
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DEF_MOD("gpio10", 914, R8A7792_CLK_CP),
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DEF_MOD("can1", 915, R8A7792_CLK_P),
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DEF_MOD("can0", 916, R8A7792_CLK_P),
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DEF_MOD("qspi_mod", 917, R8A7792_CLK_QSPI),
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DEF_MOD("gpio9", 919, R8A7792_CLK_CP),
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DEF_MOD("gpio8", 921, R8A7792_CLK_CP),
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DEF_MOD("i2c5", 925, R8A7792_CLK_HP),
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DEF_MOD("iicdvfs", 926, R8A7792_CLK_CP),
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DEF_MOD("i2c4", 927, R8A7792_CLK_HP),
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DEF_MOD("i2c3", 928, R8A7792_CLK_HP),
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DEF_MOD("i2c2", 929, R8A7792_CLK_HP),
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DEF_MOD("i2c1", 930, R8A7792_CLK_HP),
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DEF_MOD("i2c0", 931, R8A7792_CLK_HP),
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DEF_MOD("ssi-all", 1005, R8A7792_CLK_P),
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DEF_MOD("ssi4", 1011, MOD_CLK_ID(1005)),
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DEF_MOD("ssi3", 1012, MOD_CLK_ID(1005)),
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};
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static const unsigned int r8a7792_crit_mod_clks[] __initconst = {
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MOD_CLK_ID(408), /* INTC-SYS (GIC) */
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};
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/*
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* CPG Clock Data
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*/
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/*
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* MD EXTAL PLL0 PLL1 PLL3
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* 14 13 19 (MHz) *1 *2
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*---------------------------------------------------
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* 0 0 0 15 x200/3 x208/2 x106
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* 0 0 1 15 x200/3 x208/2 x88
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* 0 1 0 20 x150/3 x156/2 x80
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* 0 1 1 20 x150/3 x156/2 x66
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* 1 0 0 26 / 2 x230/3 x240/2 x122
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* 1 0 1 26 / 2 x230/3 x240/2 x102
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* 1 1 0 30 / 2 x200/3 x208/2 x106
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* 1 1 1 30 / 2 x200/3 x208/2 x88
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*
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* *1 : Table 7.5b indicates VCO output (PLL0 = VCO/3)
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* *2 : Table 7.5b indicates VCO output (PLL1 = VCO/2)
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*/
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#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 12) | \
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(((md) & BIT(13)) >> 12) | \
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(((md) & BIT(19)) >> 19))
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static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[8] __initconst = {
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{ 1, 208, 106, 200 },
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{ 1, 208, 88, 200 },
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{ 1, 156, 80, 150 },
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{ 1, 156, 66, 150 },
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{ 2, 240, 122, 230 },
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{ 2, 240, 102, 230 },
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{ 2, 208, 106, 200 },
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{ 2, 208, 88, 200 },
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};
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static int __init r8a7792_cpg_mssr_init(struct device *dev)
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{
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const struct rcar_gen2_cpg_pll_config *cpg_pll_config;
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u32 cpg_mode;
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int error;
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error = rcar_rst_read_mode_pins(&cpg_mode);
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if (error)
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return error;
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cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
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return rcar_gen2_cpg_init(cpg_pll_config, 3, cpg_mode);
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}
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const struct cpg_mssr_info r8a7792_cpg_mssr_info __initconst = {
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/* Core Clocks */
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.core_clks = r8a7792_core_clks,
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.num_core_clks = ARRAY_SIZE(r8a7792_core_clks),
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.last_dt_core_clk = LAST_DT_CORE_CLK,
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.num_total_core_clks = MOD_CLK_BASE,
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/* Module Clocks */
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.mod_clks = r8a7792_mod_clks,
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.num_mod_clks = ARRAY_SIZE(r8a7792_mod_clks),
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.num_hw_mod_clks = 12 * 32,
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/* Critical Module Clocks */
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.crit_mod_clks = r8a7792_crit_mod_clks,
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.num_crit_mod_clks = ARRAY_SIZE(r8a7792_crit_mod_clks),
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/* Callbacks */
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.init = r8a7792_cpg_mssr_init,
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.cpg_clk_register = rcar_gen2_cpg_clk_register,
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};
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@ -656,6 +656,12 @@ static const struct of_device_id cpg_mssr_match[] = {
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.data = &r8a7791_cpg_mssr_info,
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},
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#endif
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#ifdef CONFIG_CLK_R8A7792
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{
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.compatible = "renesas,r8a7792-cpg-mssr",
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.data = &r8a7792_cpg_mssr_info,
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},
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#endif
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#ifdef CONFIG_CLK_R8A7795
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{
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.compatible = "renesas,r8a7795-cpg-mssr",
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@ -134,6 +134,7 @@ extern const struct cpg_mssr_info r8a7743_cpg_mssr_info;
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extern const struct cpg_mssr_info r8a7745_cpg_mssr_info;
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extern const struct cpg_mssr_info r8a7790_cpg_mssr_info;
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extern const struct cpg_mssr_info r8a7791_cpg_mssr_info;
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extern const struct cpg_mssr_info r8a7792_cpg_mssr_info;
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extern const struct cpg_mssr_info r8a7795_cpg_mssr_info;
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extern const struct cpg_mssr_info r8a7796_cpg_mssr_info;
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