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f23f1101ad
Ensures RWDT remains alert throughout the boot process if enabled. This patch applies the change to the following SoCs: r8a77950, r8a77951, r8a77960, r8a77961, r8a77965, r8a77970, r8a77980, r8a77990 and r8a77995. Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu> Link: https://lore.kernel.org/r/20200616162626.27944-3-uli+renesas@fpond.eu Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
246 lines
8.5 KiB
C
246 lines
8.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* r8a77980 Clock Pulse Generator / Module Standby and Software Reset
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*
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* Copyright (C) 2018 Renesas Electronics Corp.
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* Copyright (C) 2018 Cogent Embedded, Inc.
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*
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* Based on r8a7795-cpg-mssr.c
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*
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* Copyright (C) 2015 Glider bvba
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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 <linux/sys_soc.h>
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#include <dt-bindings/clock/r8a77980-cpg-mssr.h>
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#include "renesas-cpg-mssr.h"
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#include "rcar-gen3-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 = R8A77980_CLK_OSC,
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/* External Input Clocks */
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CLK_EXTAL,
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CLK_EXTALR,
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/* Internal Core Clocks */
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CLK_MAIN,
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CLK_PLL1,
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CLK_PLL2,
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CLK_PLL3,
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CLK_PLL1_DIV2,
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CLK_PLL1_DIV4,
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CLK_S0,
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CLK_S1,
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CLK_S2,
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CLK_S3,
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CLK_SDSRC,
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CLK_RPCSRC,
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CLK_OCO,
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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 r8a77980_core_clks[] __initconst = {
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/* External Clock Inputs */
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DEF_INPUT("extal", CLK_EXTAL),
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DEF_INPUT("extalr", CLK_EXTALR),
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/* Internal Core Clocks */
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DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL),
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DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN),
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DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN3_PLL2, CLK_MAIN),
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DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN),
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DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
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DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4, CLK_PLL1_DIV2, 2, 1),
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DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1),
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DEF_FIXED(".s1", CLK_S1, CLK_PLL1_DIV2, 3, 1),
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DEF_FIXED(".s2", CLK_S2, CLK_PLL1_DIV2, 4, 1),
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DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 6, 1),
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DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1_DIV2, 2, 1),
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DEF_BASE(".rpcsrc", CLK_RPCSRC, CLK_TYPE_GEN3_RPCSRC, CLK_PLL1),
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DEF_RATE(".oco", CLK_OCO, 32768),
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DEF_BASE("rpc", R8A77980_CLK_RPC, CLK_TYPE_GEN3_RPC,
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CLK_RPCSRC),
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DEF_BASE("rpcd2", R8A77980_CLK_RPCD2, CLK_TYPE_GEN3_RPCD2,
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R8A77980_CLK_RPC),
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/* Core Clock Outputs */
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DEF_FIXED("ztr", R8A77980_CLK_ZTR, CLK_PLL1_DIV2, 6, 1),
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DEF_FIXED("ztrd2", R8A77980_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
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DEF_FIXED("zt", R8A77980_CLK_ZT, CLK_PLL1_DIV2, 4, 1),
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DEF_FIXED("zx", R8A77980_CLK_ZX, CLK_PLL1_DIV2, 2, 1),
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DEF_FIXED("s0d1", R8A77980_CLK_S0D1, CLK_S0, 1, 1),
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DEF_FIXED("s0d2", R8A77980_CLK_S0D2, CLK_S0, 2, 1),
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DEF_FIXED("s0d3", R8A77980_CLK_S0D3, CLK_S0, 3, 1),
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DEF_FIXED("s0d4", R8A77980_CLK_S0D4, CLK_S0, 4, 1),
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DEF_FIXED("s0d6", R8A77980_CLK_S0D6, CLK_S0, 6, 1),
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DEF_FIXED("s0d12", R8A77980_CLK_S0D12, CLK_S0, 12, 1),
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DEF_FIXED("s0d24", R8A77980_CLK_S0D24, CLK_S0, 24, 1),
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DEF_FIXED("s1d1", R8A77980_CLK_S1D1, CLK_S1, 1, 1),
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DEF_FIXED("s1d2", R8A77980_CLK_S1D2, CLK_S1, 2, 1),
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DEF_FIXED("s1d4", R8A77980_CLK_S1D4, CLK_S1, 4, 1),
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DEF_FIXED("s2d1", R8A77980_CLK_S2D1, CLK_S2, 1, 1),
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DEF_FIXED("s2d2", R8A77980_CLK_S2D2, CLK_S2, 2, 1),
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DEF_FIXED("s2d4", R8A77980_CLK_S2D4, CLK_S2, 4, 1),
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DEF_FIXED("s3d1", R8A77980_CLK_S3D1, CLK_S3, 1, 1),
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DEF_FIXED("s3d2", R8A77980_CLK_S3D2, CLK_S3, 2, 1),
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DEF_FIXED("s3d4", R8A77980_CLK_S3D4, CLK_S3, 4, 1),
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DEF_GEN3_SD("sd0", R8A77980_CLK_SD0, CLK_SDSRC, 0x0074),
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DEF_FIXED("cl", R8A77980_CLK_CL, CLK_PLL1_DIV2, 48, 1),
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DEF_FIXED("cp", R8A77980_CLK_CP, CLK_EXTAL, 2, 1),
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DEF_FIXED("cpex", R8A77980_CLK_CPEX, CLK_EXTAL, 2, 1),
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DEF_DIV6P1("canfd", R8A77980_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
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DEF_DIV6P1("csi0", R8A77980_CLK_CSI0, CLK_PLL1_DIV4, 0x00c),
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DEF_DIV6P1("mso", R8A77980_CLK_MSO, CLK_PLL1_DIV4, 0x014),
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DEF_GEN3_OSC("osc", R8A77980_CLK_OSC, CLK_EXTAL, 8),
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DEF_GEN3_MDSEL("r", R8A77980_CLK_R, 29, CLK_EXTALR, 1, CLK_OCO, 1),
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};
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static const struct mssr_mod_clk r8a77980_mod_clks[] __initconst = {
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DEF_MOD("tmu4", 121, R8A77980_CLK_S0D6),
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DEF_MOD("tmu3", 122, R8A77980_CLK_S0D6),
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DEF_MOD("tmu2", 123, R8A77980_CLK_S0D6),
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DEF_MOD("tmu1", 124, R8A77980_CLK_S0D6),
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DEF_MOD("tmu0", 125, R8A77980_CLK_CP),
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DEF_MOD("scif4", 203, R8A77980_CLK_S3D4),
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DEF_MOD("scif3", 204, R8A77980_CLK_S3D4),
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DEF_MOD("scif1", 206, R8A77980_CLK_S3D4),
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DEF_MOD("scif0", 207, R8A77980_CLK_S3D4),
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DEF_MOD("msiof3", 208, R8A77980_CLK_MSO),
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DEF_MOD("msiof2", 209, R8A77980_CLK_MSO),
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DEF_MOD("msiof1", 210, R8A77980_CLK_MSO),
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DEF_MOD("msiof0", 211, R8A77980_CLK_MSO),
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DEF_MOD("sys-dmac2", 217, R8A77980_CLK_S0D3),
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DEF_MOD("sys-dmac1", 218, R8A77980_CLK_S0D3),
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DEF_MOD("cmt3", 300, R8A77980_CLK_R),
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DEF_MOD("cmt2", 301, R8A77980_CLK_R),
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DEF_MOD("cmt1", 302, R8A77980_CLK_R),
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DEF_MOD("cmt0", 303, R8A77980_CLK_R),
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DEF_MOD("tpu0", 304, R8A77980_CLK_S3D4),
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DEF_MOD("sdif", 314, R8A77980_CLK_SD0),
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DEF_MOD("pciec0", 319, R8A77980_CLK_S2D2),
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DEF_MOD("rwdt", 402, R8A77980_CLK_R),
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DEF_MOD("intc-ex", 407, R8A77980_CLK_CP),
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DEF_MOD("intc-ap", 408, R8A77980_CLK_S0D3),
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DEF_MOD("hscif3", 517, R8A77980_CLK_S3D1),
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DEF_MOD("hscif2", 518, R8A77980_CLK_S3D1),
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DEF_MOD("hscif1", 519, R8A77980_CLK_S3D1),
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DEF_MOD("hscif0", 520, R8A77980_CLK_S3D1),
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DEF_MOD("imp4", 521, R8A77980_CLK_S1D1),
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DEF_MOD("thermal", 522, R8A77980_CLK_CP),
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DEF_MOD("pwm", 523, R8A77980_CLK_S0D12),
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DEF_MOD("impdma1", 526, R8A77980_CLK_S1D1),
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DEF_MOD("impdma0", 527, R8A77980_CLK_S1D1),
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DEF_MOD("imp-ocv4", 528, R8A77980_CLK_S1D1),
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DEF_MOD("imp-ocv3", 529, R8A77980_CLK_S1D1),
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DEF_MOD("imp-ocv2", 531, R8A77980_CLK_S1D1),
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DEF_MOD("fcpvd0", 603, R8A77980_CLK_S3D1),
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DEF_MOD("vspd0", 623, R8A77980_CLK_S3D1),
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DEF_MOD("csi41", 715, R8A77980_CLK_CSI0),
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DEF_MOD("csi40", 716, R8A77980_CLK_CSI0),
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DEF_MOD("du0", 724, R8A77980_CLK_S2D1),
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DEF_MOD("lvds", 727, R8A77980_CLK_S2D1),
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DEF_MOD("etheravb", 812, R8A77980_CLK_S3D2),
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DEF_MOD("gether", 813, R8A77980_CLK_S3D2),
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DEF_MOD("imp3", 824, R8A77980_CLK_S1D1),
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DEF_MOD("imp2", 825, R8A77980_CLK_S1D1),
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DEF_MOD("imp1", 826, R8A77980_CLK_S1D1),
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DEF_MOD("imp0", 827, R8A77980_CLK_S1D1),
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DEF_MOD("imp-ocv1", 828, R8A77980_CLK_S1D1),
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DEF_MOD("imp-ocv0", 829, R8A77980_CLK_S1D1),
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DEF_MOD("impram", 830, R8A77980_CLK_S1D1),
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DEF_MOD("impcnn", 831, R8A77980_CLK_S1D1),
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DEF_MOD("gpio5", 907, R8A77980_CLK_CP),
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DEF_MOD("gpio4", 908, R8A77980_CLK_CP),
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DEF_MOD("gpio3", 909, R8A77980_CLK_CP),
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DEF_MOD("gpio2", 910, R8A77980_CLK_CP),
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DEF_MOD("gpio1", 911, R8A77980_CLK_CP),
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DEF_MOD("gpio0", 912, R8A77980_CLK_CP),
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DEF_MOD("can-fd", 914, R8A77980_CLK_S3D2),
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DEF_MOD("rpc-if", 917, R8A77980_CLK_RPCD2),
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DEF_MOD("i2c4", 927, R8A77980_CLK_S0D6),
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DEF_MOD("i2c3", 928, R8A77980_CLK_S0D6),
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DEF_MOD("i2c2", 929, R8A77980_CLK_S3D2),
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DEF_MOD("i2c1", 930, R8A77980_CLK_S3D2),
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DEF_MOD("i2c0", 931, R8A77980_CLK_S3D2),
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};
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static const unsigned int r8a77980_crit_mod_clks[] __initconst = {
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MOD_CLK_ID(402), /* RWDT */
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MOD_CLK_ID(408), /* INTC-AP (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 PLL2 PLL1 PLL3 OSC
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* 14 13 (MHz)
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* --------------------------------------------------------
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* 0 0 16.66 x 1 x240 x192 x192 /16
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* 0 1 20 x 1 x200 x160 x160 /19
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* 1 0 27 x 1 x148 x118 x118 /26
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* 1 1 33.33 / 2 x240 x192 x192 /32
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*/
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#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 13) | \
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(((md) & BIT(13)) >> 13))
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static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[4] __initconst = {
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/* EXTAL div PLL1 mult/div PLL3 mult/div OSC prediv */
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{ 1, 192, 1, 192, 1, 16, },
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{ 1, 160, 1, 160, 1, 19, },
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{ 1, 118, 1, 118, 1, 26, },
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{ 2, 192, 1, 192, 1, 32, },
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};
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static int __init r8a77980_cpg_mssr_init(struct device *dev)
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{
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const struct rcar_gen3_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_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
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}
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const struct cpg_mssr_info r8a77980_cpg_mssr_info __initconst = {
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/* Core Clocks */
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.core_clks = r8a77980_core_clks,
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.num_core_clks = ARRAY_SIZE(r8a77980_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 = r8a77980_mod_clks,
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.num_mod_clks = ARRAY_SIZE(r8a77980_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 = r8a77980_crit_mod_clks,
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.num_crit_mod_clks = ARRAY_SIZE(r8a77980_crit_mod_clks),
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/* Callbacks */
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.init = r8a77980_cpg_mssr_init,
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.cpg_clk_register = rcar_gen3_cpg_clk_register,
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};
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