diff options
Diffstat (limited to 'kernel/arch/arm/mach-shmobile/clock-sh73a0.c')
| -rw-r--r-- | kernel/arch/arm/mach-shmobile/clock-sh73a0.c | 752 |
1 files changed, 752 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-shmobile/clock-sh73a0.c b/kernel/arch/arm/mach-shmobile/clock-sh73a0.c new file mode 100644 index 000000000..3855fb024 --- /dev/null +++ b/kernel/arch/arm/mach-shmobile/clock-sh73a0.c @@ -0,0 +1,752 @@ +/* + * sh73a0 clock framework support + * + * Copyright (C) 2010 Magnus Damm + * + * 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 + * + * 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. + */ +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/io.h> +#include <linux/sh_clk.h> +#include <linux/clkdev.h> +#include <asm/processor.h> +#include "clock.h" +#include "common.h" + +#define FRQCRA IOMEM(0xe6150000) +#define FRQCRB IOMEM(0xe6150004) +#define FRQCRD IOMEM(0xe61500e4) +#define VCLKCR1 IOMEM(0xe6150008) +#define VCLKCR2 IOMEM(0xe615000C) +#define VCLKCR3 IOMEM(0xe615001C) +#define ZBCKCR IOMEM(0xe6150010) +#define FLCKCR IOMEM(0xe6150014) +#define SD0CKCR IOMEM(0xe6150074) +#define SD1CKCR IOMEM(0xe6150078) +#define SD2CKCR IOMEM(0xe615007C) +#define FSIACKCR IOMEM(0xe6150018) +#define FSIBCKCR IOMEM(0xe6150090) +#define SUBCKCR IOMEM(0xe6150080) +#define SPUACKCR IOMEM(0xe6150084) +#define SPUVCKCR IOMEM(0xe6150094) +#define MSUCKCR IOMEM(0xe6150088) +#define HSICKCR IOMEM(0xe615008C) +#define MFCK1CR IOMEM(0xe6150098) +#define MFCK2CR IOMEM(0xe615009C) +#define DSITCKCR IOMEM(0xe6150060) +#define DSI0PCKCR IOMEM(0xe6150064) +#define DSI1PCKCR IOMEM(0xe6150068) +#define DSI0PHYCR 0xe615006C +#define DSI1PHYCR 0xe6150070 +#define PLLECR IOMEM(0xe61500d0) +#define PLL0CR IOMEM(0xe61500d8) +#define PLL1CR IOMEM(0xe6150028) +#define PLL2CR IOMEM(0xe615002c) +#define PLL3CR IOMEM(0xe61500dc) +#define SMSTPCR0 IOMEM(0xe6150130) +#define SMSTPCR1 IOMEM(0xe6150134) +#define SMSTPCR2 IOMEM(0xe6150138) +#define SMSTPCR3 IOMEM(0xe615013c) +#define SMSTPCR4 IOMEM(0xe6150140) +#define SMSTPCR5 IOMEM(0xe6150144) +#define CKSCR IOMEM(0xe61500c0) + +/* Fixed 32 KHz root clock from EXTALR pin */ +static struct clk r_clk = { + .rate = 32768, +}; + +/* + * 26MHz default rate for the EXTAL1 root input clock. + * If needed, reset this with clk_set_rate() from the platform code. + */ +struct clk sh73a0_extal1_clk = { + .rate = 26000000, +}; + +/* + * 48MHz default rate for the EXTAL2 root input clock. + * If needed, reset this with clk_set_rate() from the platform code. + */ +struct clk sh73a0_extal2_clk = { + .rate = 48000000, +}; + +static struct sh_clk_ops main_clk_ops = { + .recalc = followparent_recalc, +}; + +/* Main clock */ +static struct clk main_clk = { + /* .parent wll be set on sh73a0_clock_init() */ + .ops = &main_clk_ops, +}; + +/* PLL0, PLL1, PLL2, PLL3 */ +static unsigned long pll_recalc(struct clk *clk) +{ + unsigned long mult = 1; + + if (__raw_readl(PLLECR) & (1 << clk->enable_bit)) { + mult = (((__raw_readl(clk->enable_reg) >> 24) & 0x3f) + 1); + /* handle CFG bit for PLL1 and PLL2 */ + switch (clk->enable_bit) { + case 1: + case 2: + if (__raw_readl(clk->enable_reg) & (1 << 20)) + mult *= 2; + } + } + + return clk->parent->rate * mult; +} + +static struct sh_clk_ops pll_clk_ops = { + .recalc = pll_recalc, +}; + +static struct clk pll0_clk = { + .ops = &pll_clk_ops, + .flags = CLK_ENABLE_ON_INIT, + .parent = &main_clk, + .enable_reg = (void __iomem *)PLL0CR, + .enable_bit = 0, +}; + +static struct clk pll1_clk = { + .ops = &pll_clk_ops, + .flags = CLK_ENABLE_ON_INIT, + .parent = &main_clk, + .enable_reg = (void __iomem *)PLL1CR, + .enable_bit = 1, +}; + +static struct clk pll2_clk = { + .ops = &pll_clk_ops, + .flags = CLK_ENABLE_ON_INIT, + .parent = &main_clk, + .enable_reg = (void __iomem *)PLL2CR, + .enable_bit = 2, +}; + +static struct clk pll3_clk = { + .ops = &pll_clk_ops, + .flags = CLK_ENABLE_ON_INIT, + .parent = &main_clk, + .enable_reg = (void __iomem *)PLL3CR, + .enable_bit = 3, +}; + +/* A fixed divide block */ +SH_CLK_RATIO(div2, 1, 2); +SH_CLK_RATIO(div7, 1, 7); +SH_CLK_RATIO(div13, 1, 13); + +SH_FIXED_RATIO_CLK(extal1_div2_clk, sh73a0_extal1_clk, div2); +SH_FIXED_RATIO_CLK(extal2_div2_clk, sh73a0_extal2_clk, div2); +SH_FIXED_RATIO_CLK(main_div2_clk, main_clk, div2); +SH_FIXED_RATIO_CLK(pll1_div2_clk, pll1_clk, div2); +SH_FIXED_RATIO_CLK(pll1_div7_clk, pll1_clk, div7); +SH_FIXED_RATIO_CLK(pll1_div13_clk, pll1_clk, div13); + +/* External input clock */ +struct clk sh73a0_extcki_clk = { +}; + +struct clk sh73a0_extalr_clk = { +}; + +static struct clk *main_clks[] = { + &r_clk, + &sh73a0_extal1_clk, + &sh73a0_extal2_clk, + &extal1_div2_clk, + &extal2_div2_clk, + &main_clk, + &main_div2_clk, + &pll0_clk, + &pll1_clk, + &pll2_clk, + &pll3_clk, + &pll1_div2_clk, + &pll1_div7_clk, + &pll1_div13_clk, + &sh73a0_extcki_clk, + &sh73a0_extalr_clk, +}; + +static int frqcr_kick(void) +{ + int i; + + /* set KICK bit in FRQCRB to update hardware setting, check success */ + __raw_writel(__raw_readl(FRQCRB) | (1 << 31), FRQCRB); + for (i = 1000; i; i--) + if (__raw_readl(FRQCRB) & (1 << 31)) + cpu_relax(); + else + return i; + + return -ETIMEDOUT; +} + +static void div4_kick(struct clk *clk) +{ + frqcr_kick(); +} + +static int divisors[] = { 2, 3, 4, 6, 8, 12, 16, 18, + 24, 0, 36, 48, 7 }; + +static struct clk_div_mult_table div4_div_mult_table = { + .divisors = divisors, + .nr_divisors = ARRAY_SIZE(divisors), +}; + +static struct clk_div4_table div4_table = { + .div_mult_table = &div4_div_mult_table, + .kick = div4_kick, +}; + +enum { DIV4_I, DIV4_ZG, DIV4_M3, DIV4_B, DIV4_M1, DIV4_M2, + DIV4_Z, DIV4_ZX, DIV4_HP, DIV4_NR }; + +#define DIV4(_reg, _bit, _mask, _flags) \ + SH_CLK_DIV4(&pll1_clk, _reg, _bit, _mask, _flags) + +static struct clk div4_clks[DIV4_NR] = { + [DIV4_I] = DIV4(FRQCRA, 20, 0xdff, CLK_ENABLE_ON_INIT), + /* + * ZG clock is dividing PLL0 frequency to supply SGX. Make sure not to + * exceed maximum frequencies of 201.5MHz for VDD_DVFS=1.175 and + * 239.2MHz for VDD_DVFS=1.315V. + */ + [DIV4_ZG] = SH_CLK_DIV4(&pll0_clk, FRQCRA, 16, 0xd7f, CLK_ENABLE_ON_INIT), + [DIV4_M3] = DIV4(FRQCRA, 12, 0x1dff, CLK_ENABLE_ON_INIT), + [DIV4_B] = DIV4(FRQCRA, 8, 0xdff, CLK_ENABLE_ON_INIT), + [DIV4_M1] = DIV4(FRQCRA, 4, 0x1dff, 0), + [DIV4_M2] = DIV4(FRQCRA, 0, 0x1dff, 0), + [DIV4_Z] = SH_CLK_DIV4(&pll0_clk, FRQCRB, 24, 0x97f, 0), + [DIV4_ZX] = DIV4(FRQCRB, 12, 0xdff, 0), + [DIV4_HP] = DIV4(FRQCRB, 4, 0xdff, 0), +}; + +static unsigned long twd_recalc(struct clk *clk) +{ + return clk_get_rate(clk->parent) / 4; +} + +static struct sh_clk_ops twd_clk_ops = { + .recalc = twd_recalc, +}; + +static struct clk twd_clk = { + .parent = &div4_clks[DIV4_Z], + .ops = &twd_clk_ops, +}; + +static struct sh_clk_ops zclk_ops, kicker_ops; +static const struct sh_clk_ops *div4_clk_ops; + +static int zclk_set_rate(struct clk *clk, unsigned long rate) +{ + int ret; + + if (!clk->parent || !__clk_get(clk->parent)) + return -ENODEV; + + if (readl(FRQCRB) & (1 << 31)) + return -EBUSY; + + if (rate == clk_get_rate(clk->parent)) { + /* 1:1 - switch off divider */ + __raw_writel(__raw_readl(FRQCRB) & ~(1 << 28), FRQCRB); + /* nullify the divider to prepare for the next time */ + ret = div4_clk_ops->set_rate(clk, rate / 2); + if (!ret) + ret = frqcr_kick(); + if (ret > 0) + ret = 0; + } else { + /* Enable the divider */ + __raw_writel(__raw_readl(FRQCRB) | (1 << 28), FRQCRB); + + ret = frqcr_kick(); + if (ret >= 0) + /* + * set the divider - call the DIV4 method, it will kick + * FRQCRB too + */ + ret = div4_clk_ops->set_rate(clk, rate); + if (ret < 0) + goto esetrate; + } + +esetrate: + __clk_put(clk->parent); + return ret; +} + +static long zclk_round_rate(struct clk *clk, unsigned long rate) +{ + unsigned long div_freq = div4_clk_ops->round_rate(clk, rate), + parent_freq = clk_get_rate(clk->parent); + + if (rate > div_freq && abs(parent_freq - rate) < rate - div_freq) + return parent_freq; + + return div_freq; +} + +static unsigned long zclk_recalc(struct clk *clk) +{ + /* + * Must recalculate frequencies in case PLL0 has been changed, even if + * the divisor is unused ATM! + */ + unsigned long div_freq = div4_clk_ops->recalc(clk); + + if (__raw_readl(FRQCRB) & (1 << 28)) + return div_freq; + + return clk_get_rate(clk->parent); +} + +static int kicker_set_rate(struct clk *clk, unsigned long rate) +{ + if (__raw_readl(FRQCRB) & (1 << 31)) + return -EBUSY; + + return div4_clk_ops->set_rate(clk, rate); +} + +static void div4_clk_extend(void) +{ + int i; + + div4_clk_ops = div4_clks[0].ops; + + /* Add a kicker-busy check before changing the rate */ + kicker_ops = *div4_clk_ops; + /* We extend the DIV4 clock with a 1:1 pass-through case */ + zclk_ops = *div4_clk_ops; + + kicker_ops.set_rate = kicker_set_rate; + zclk_ops.set_rate = zclk_set_rate; + zclk_ops.round_rate = zclk_round_rate; + zclk_ops.recalc = zclk_recalc; + + for (i = 0; i < DIV4_NR; i++) + div4_clks[i].ops = i == DIV4_Z ? &zclk_ops : &kicker_ops; +} + +enum { DIV6_VCK1, DIV6_VCK2, DIV6_VCK3, DIV6_ZB1, + DIV6_FLCTL, DIV6_SDHI0, DIV6_SDHI1, DIV6_SDHI2, + DIV6_FSIA, DIV6_FSIB, DIV6_SUB, + DIV6_SPUA, DIV6_SPUV, DIV6_MSU, + DIV6_HSI, DIV6_MFG1, DIV6_MFG2, + DIV6_DSIT, DIV6_DSI0P, DIV6_DSI1P, + DIV6_NR }; + +static struct clk *vck_parent[8] = { + [0] = &pll1_div2_clk, + [1] = &pll2_clk, + [2] = &sh73a0_extcki_clk, + [3] = &sh73a0_extal2_clk, + [4] = &main_div2_clk, + [5] = &sh73a0_extalr_clk, + [6] = &main_clk, +}; + +static struct clk *pll_parent[4] = { + [0] = &pll1_div2_clk, + [1] = &pll2_clk, + [2] = &pll1_div13_clk, +}; + +static struct clk *hsi_parent[4] = { + [0] = &pll1_div2_clk, + [1] = &pll2_clk, + [2] = &pll1_div7_clk, +}; + +static struct clk *pll_extal2_parent[] = { + [0] = &pll1_div2_clk, + [1] = &pll2_clk, + [2] = &sh73a0_extal2_clk, + [3] = &sh73a0_extal2_clk, +}; + +static struct clk *dsi_parent[8] = { + [0] = &pll1_div2_clk, + [1] = &pll2_clk, + [2] = &main_clk, + [3] = &sh73a0_extal2_clk, + [4] = &sh73a0_extcki_clk, +}; + +static struct clk div6_clks[DIV6_NR] = { + [DIV6_VCK1] = SH_CLK_DIV6_EXT(VCLKCR1, 0, + vck_parent, ARRAY_SIZE(vck_parent), 12, 3), + [DIV6_VCK2] = SH_CLK_DIV6_EXT(VCLKCR2, 0, + vck_parent, ARRAY_SIZE(vck_parent), 12, 3), + [DIV6_VCK3] = SH_CLK_DIV6_EXT(VCLKCR3, 0, + vck_parent, ARRAY_SIZE(vck_parent), 12, 3), + [DIV6_ZB1] = SH_CLK_DIV6_EXT(ZBCKCR, CLK_ENABLE_ON_INIT, + pll_parent, ARRAY_SIZE(pll_parent), 7, 1), + [DIV6_FLCTL] = SH_CLK_DIV6_EXT(FLCKCR, 0, + pll_parent, ARRAY_SIZE(pll_parent), 7, 1), + [DIV6_SDHI0] = SH_CLK_DIV6_EXT(SD0CKCR, 0, + pll_parent, ARRAY_SIZE(pll_parent), 6, 2), + [DIV6_SDHI1] = SH_CLK_DIV6_EXT(SD1CKCR, 0, + pll_parent, ARRAY_SIZE(pll_parent), 6, 2), + [DIV6_SDHI2] = SH_CLK_DIV6_EXT(SD2CKCR, 0, + pll_parent, ARRAY_SIZE(pll_parent), 6, 2), + [DIV6_FSIA] = SH_CLK_DIV6_EXT(FSIACKCR, 0, + pll_parent, ARRAY_SIZE(pll_parent), 6, 1), + [DIV6_FSIB] = SH_CLK_DIV6_EXT(FSIBCKCR, 0, + pll_parent, ARRAY_SIZE(pll_parent), 6, 1), + [DIV6_SUB] = SH_CLK_DIV6_EXT(SUBCKCR, 0, + pll_extal2_parent, ARRAY_SIZE(pll_extal2_parent), 6, 2), + [DIV6_SPUA] = SH_CLK_DIV6_EXT(SPUACKCR, 0, + pll_extal2_parent, ARRAY_SIZE(pll_extal2_parent), 6, 2), + [DIV6_SPUV] = SH_CLK_DIV6_EXT(SPUVCKCR, 0, + pll_extal2_parent, ARRAY_SIZE(pll_extal2_parent), 6, 2), + [DIV6_MSU] = SH_CLK_DIV6_EXT(MSUCKCR, 0, + pll_parent, ARRAY_SIZE(pll_parent), 7, 1), + [DIV6_HSI] = SH_CLK_DIV6_EXT(HSICKCR, 0, + hsi_parent, ARRAY_SIZE(hsi_parent), 6, 2), + [DIV6_MFG1] = SH_CLK_DIV6_EXT(MFCK1CR, 0, + pll_parent, ARRAY_SIZE(pll_parent), 7, 1), + [DIV6_MFG2] = SH_CLK_DIV6_EXT(MFCK2CR, 0, + pll_parent, ARRAY_SIZE(pll_parent), 7, 1), + [DIV6_DSIT] = SH_CLK_DIV6_EXT(DSITCKCR, 0, + pll_parent, ARRAY_SIZE(pll_parent), 7, 1), + [DIV6_DSI0P] = SH_CLK_DIV6_EXT(DSI0PCKCR, 0, + dsi_parent, ARRAY_SIZE(dsi_parent), 12, 3), + [DIV6_DSI1P] = SH_CLK_DIV6_EXT(DSI1PCKCR, 0, + dsi_parent, ARRAY_SIZE(dsi_parent), 12, 3), +}; + +/* DSI DIV */ +static unsigned long dsiphy_recalc(struct clk *clk) +{ + u32 value; + + value = __raw_readl(clk->mapping->base); + + /* FIXME */ + if (!(value & 0x000B8000)) + return clk->parent->rate; + + value &= 0x3f; + value += 1; + + if ((value < 12) || + (value > 33)) { + pr_err("DSIPHY has wrong value (%d)", value); + return 0; + } + + return clk->parent->rate / value; +} + +static long dsiphy_round_rate(struct clk *clk, unsigned long rate) +{ + return clk_rate_mult_range_round(clk, 12, 33, rate); +} + +static void dsiphy_disable(struct clk *clk) +{ + u32 value; + + value = __raw_readl(clk->mapping->base); + value &= ~0x000B8000; + + __raw_writel(value , clk->mapping->base); +} + +static int dsiphy_enable(struct clk *clk) +{ + u32 value; + int multi; + + value = __raw_readl(clk->mapping->base); + multi = (value & 0x3f) + 1; + + if ((multi < 12) || (multi > 33)) + return -EIO; + + __raw_writel(value | 0x000B8000, clk->mapping->base); + + return 0; +} + +static int dsiphy_set_rate(struct clk *clk, unsigned long rate) +{ + u32 value; + int idx; + + idx = rate / clk->parent->rate; + if ((idx < 12) || (idx > 33)) + return -EINVAL; + + idx += -1; + + value = __raw_readl(clk->mapping->base); + value = (value & ~0x3f) + idx; + + __raw_writel(value, clk->mapping->base); + + return 0; +} + +static struct sh_clk_ops dsiphy_clk_ops = { + .recalc = dsiphy_recalc, + .round_rate = dsiphy_round_rate, + .set_rate = dsiphy_set_rate, + .enable = dsiphy_enable, + .disable = dsiphy_disable, +}; + +static struct clk_mapping dsi0phy_clk_mapping = { + .phys = DSI0PHYCR, + .len = 4, +}; + +static struct clk_mapping dsi1phy_clk_mapping = { + .phys = DSI1PHYCR, + .len = 4, +}; + +static struct clk dsi0phy_clk = { + .ops = &dsiphy_clk_ops, + .parent = &div6_clks[DIV6_DSI0P], /* late install */ + .mapping = &dsi0phy_clk_mapping, +}; + +static struct clk dsi1phy_clk = { + .ops = &dsiphy_clk_ops, + .parent = &div6_clks[DIV6_DSI1P], /* late install */ + .mapping = &dsi1phy_clk_mapping, +}; + +static struct clk *late_main_clks[] = { + &dsi0phy_clk, + &dsi1phy_clk, + &twd_clk, +}; + +enum { MSTP001, + MSTP129, MSTP128, MSTP127, MSTP126, MSTP125, MSTP118, MSTP116, MSTP112, MSTP100, + MSTP219, MSTP218, MSTP217, + MSTP207, MSTP206, MSTP204, MSTP203, MSTP202, MSTP201, MSTP200, + MSTP331, MSTP329, MSTP328, MSTP325, MSTP323, MSTP322, + MSTP314, MSTP313, MSTP312, MSTP311, + MSTP304, MSTP303, MSTP302, MSTP301, MSTP300, + MSTP411, MSTP410, MSTP403, + MSTP508, + MSTP_NR }; + +#define MSTP(_parent, _reg, _bit, _flags) \ + SH_CLK_MSTP32(_parent, _reg, _bit, _flags) + +static struct clk mstp_clks[MSTP_NR] = { + [MSTP001] = MSTP(&div4_clks[DIV4_HP], SMSTPCR0, 1, 0), /* IIC2 */ + [MSTP129] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 29, 0), /* CEU1 */ + [MSTP128] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 28, 0), /* CSI2-RX1 */ + [MSTP127] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 27, 0), /* CEU0 */ + [MSTP126] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 26, 0), /* CSI2-RX0 */ + [MSTP125] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR1, 25, 0), /* TMU0 */ + [MSTP118] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 18, 0), /* DSITX0 */ + [MSTP116] = MSTP(&div4_clks[DIV4_HP], SMSTPCR1, 16, 0), /* IIC0 */ + [MSTP112] = MSTP(&div4_clks[DIV4_ZG], SMSTPCR1, 12, 0), /* SGX */ + [MSTP100] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 0, 0), /* LCDC0 */ + [MSTP219] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 19, 0), /* SCIFA7 */ + [MSTP218] = MSTP(&div4_clks[DIV4_HP], SMSTPCR2, 18, 0), /* SY-DMAC */ + [MSTP217] = MSTP(&div4_clks[DIV4_HP], SMSTPCR2, 17, 0), /* MP-DMAC */ + [MSTP207] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 7, 0), /* SCIFA5 */ + [MSTP206] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 6, 0), /* SCIFB */ + [MSTP204] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 4, 0), /* SCIFA0 */ + [MSTP203] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 3, 0), /* SCIFA1 */ + [MSTP202] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 2, 0), /* SCIFA2 */ + [MSTP201] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 1, 0), /* SCIFA3 */ + [MSTP200] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 0, 0), /* SCIFA4 */ + [MSTP331] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR3, 31, 0), /* SCIFA6 */ + [MSTP329] = MSTP(&r_clk, SMSTPCR3, 29, 0), /* CMT10 */ + [MSTP328] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 28, 0), /*FSI*/ + [MSTP325] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR3, 25, 0), /* IrDA */ + [MSTP323] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 23, 0), /* IIC1 */ + [MSTP322] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 22, 0), /* USB */ + [MSTP314] = MSTP(&div6_clks[DIV6_SDHI0], SMSTPCR3, 14, 0), /* SDHI0 */ + [MSTP313] = MSTP(&div6_clks[DIV6_SDHI1], SMSTPCR3, 13, 0), /* SDHI1 */ + [MSTP312] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 12, 0), /* MMCIF0 */ + [MSTP311] = MSTP(&div6_clks[DIV6_SDHI2], SMSTPCR3, 11, 0), /* SDHI2 */ + [MSTP304] = MSTP(&main_div2_clk, SMSTPCR3, 4, 0), /* TPU0 */ + [MSTP303] = MSTP(&main_div2_clk, SMSTPCR3, 3, 0), /* TPU1 */ + [MSTP302] = MSTP(&main_div2_clk, SMSTPCR3, 2, 0), /* TPU2 */ + [MSTP301] = MSTP(&main_div2_clk, SMSTPCR3, 1, 0), /* TPU3 */ + [MSTP300] = MSTP(&main_div2_clk, SMSTPCR3, 0, 0), /* TPU4 */ + [MSTP411] = MSTP(&div4_clks[DIV4_HP], SMSTPCR4, 11, 0), /* IIC3 */ + [MSTP410] = MSTP(&div4_clks[DIV4_HP], SMSTPCR4, 10, 0), /* IIC4 */ + [MSTP403] = MSTP(&r_clk, SMSTPCR4, 3, 0), /* KEYSC */ + [MSTP508] = MSTP(&div4_clks[DIV4_HP], SMSTPCR5, 8, 0), /* INTCA0 */ +}; + +/* The lookups structure below includes duplicate entries for some clocks + * with alternate names. + * - The traditional name used when a device is initialised with platform data + * - The name used when a device is initialised using device tree + * The longer-term aim is to remove these duplicates, and indeed the + * lookups table entirely, by describing clocks using device tree. + */ +static struct clk_lookup lookups[] = { + /* main clocks */ + CLKDEV_CON_ID("r_clk", &r_clk), + CLKDEV_DEV_ID("smp_twd", &twd_clk), /* smp_twd */ + + /* DIV4 clocks */ + CLKDEV_DEV_ID("cpu0", &div4_clks[DIV4_Z]), + + /* DIV6 clocks */ + CLKDEV_CON_ID("vck1_clk", &div6_clks[DIV6_VCK1]), + CLKDEV_CON_ID("vck2_clk", &div6_clks[DIV6_VCK2]), + CLKDEV_CON_ID("vck3_clk", &div6_clks[DIV6_VCK3]), + CLKDEV_CON_ID("sdhi0_clk", &div6_clks[DIV6_SDHI0]), + CLKDEV_CON_ID("sdhi1_clk", &div6_clks[DIV6_SDHI1]), + CLKDEV_CON_ID("sdhi2_clk", &div6_clks[DIV6_SDHI2]), + + /* MSTP32 clocks */ + CLKDEV_DEV_ID("i2c-sh_mobile.2", &mstp_clks[MSTP001]), /* I2C2 */ + CLKDEV_DEV_ID("e6824000.i2c", &mstp_clks[MSTP001]), /* I2C2 */ + CLKDEV_DEV_ID("sh_mobile_ceu.1", &mstp_clks[MSTP129]), /* CEU1 */ + CLKDEV_DEV_ID("sh-mobile-csi2.1", &mstp_clks[MSTP128]), /* CSI2-RX1 */ + CLKDEV_DEV_ID("sh_mobile_ceu.0", &mstp_clks[MSTP127]), /* CEU0 */ + CLKDEV_DEV_ID("sh-mobile-csi2.0", &mstp_clks[MSTP126]), /* CSI2-RX0 */ + CLKDEV_DEV_ID("sh-mipi-dsi.0", &mstp_clks[MSTP118]), /* DSITX */ + CLKDEV_DEV_ID("i2c-sh_mobile.0", &mstp_clks[MSTP116]), /* I2C0 */ + CLKDEV_DEV_ID("e6820000.i2c", &mstp_clks[MSTP116]), /* I2C0 */ + CLKDEV_DEV_ID("sh_mobile_lcdc_fb.0", &mstp_clks[MSTP100]), /* LCDC0 */ + CLKDEV_DEV_ID("sh-sci.7", &mstp_clks[MSTP219]), /* SCIFA7 */ + CLKDEV_DEV_ID("e6cd0000.serial", &mstp_clks[MSTP219]), /* SCIFA7 */ + CLKDEV_DEV_ID("sh-dma-engine.0", &mstp_clks[MSTP218]), /* SY-DMAC */ + CLKDEV_DEV_ID("sh-dma-engine.1", &mstp_clks[MSTP217]), /* MP-DMAC */ + CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP207]), /* SCIFA5 */ + CLKDEV_DEV_ID("e6cb0000.serial", &mstp_clks[MSTP207]), /* SCIFA5 */ + CLKDEV_DEV_ID("sh-sci.8", &mstp_clks[MSTP206]), /* SCIFB */ + CLKDEV_DEV_ID("e6c3000.serial", &mstp_clks[MSTP206]), /* SCIFB */ + CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP204]), /* SCIFA0 */ + CLKDEV_DEV_ID("e6c40000.serial", &mstp_clks[MSTP204]), /* SCIFA0 */ + CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP203]), /* SCIFA1 */ + CLKDEV_DEV_ID("e6c50000.serial", &mstp_clks[MSTP203]), /* SCIFA1 */ + CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP202]), /* SCIFA2 */ + CLKDEV_DEV_ID("e6c60000.serial", &mstp_clks[MSTP202]), /* SCIFA2 */ + CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP201]), /* SCIFA3 */ + CLKDEV_DEV_ID("e6c70000.serial", &mstp_clks[MSTP201]), /* SCIFA3 */ + CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP200]), /* SCIFA4 */ + CLKDEV_DEV_ID("e6c80000.serial", &mstp_clks[MSTP200]), /* SCIFA4 */ + CLKDEV_DEV_ID("sh-sci.6", &mstp_clks[MSTP331]), /* SCIFA6 */ + CLKDEV_DEV_ID("e6cc0000.serial", &mstp_clks[MSTP331]), /* SCIFA6 */ + CLKDEV_DEV_ID("sh_fsi2", &mstp_clks[MSTP328]), /* FSI */ + CLKDEV_DEV_ID("ec230000.sound", &mstp_clks[MSTP328]), /* FSI */ + CLKDEV_DEV_ID("sh_irda.0", &mstp_clks[MSTP325]), /* IrDA */ + CLKDEV_DEV_ID("i2c-sh_mobile.1", &mstp_clks[MSTP323]), /* I2C1 */ + CLKDEV_DEV_ID("e6822000.i2c", &mstp_clks[MSTP323]), /* I2C1 */ + CLKDEV_DEV_ID("renesas_usbhs", &mstp_clks[MSTP322]), /* USB */ + CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP314]), /* SDHI0 */ + CLKDEV_DEV_ID("ee100000.sd", &mstp_clks[MSTP314]), /* SDHI0 */ + CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP313]), /* SDHI1 */ + CLKDEV_DEV_ID("ee120000.sd", &mstp_clks[MSTP313]), /* SDHI1 */ + CLKDEV_DEV_ID("sh_mmcif.0", &mstp_clks[MSTP312]), /* MMCIF0 */ + CLKDEV_DEV_ID("e6bd0000.mmc", &mstp_clks[MSTP312]), /* MMCIF0 */ + CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP311]), /* SDHI2 */ + CLKDEV_DEV_ID("ee140000.sd", &mstp_clks[MSTP311]), /* SDHI2 */ + CLKDEV_DEV_ID("renesas-tpu-pwm.0", &mstp_clks[MSTP304]), /* TPU0 */ + CLKDEV_DEV_ID("renesas-tpu-pwm.1", &mstp_clks[MSTP303]), /* TPU1 */ + CLKDEV_DEV_ID("renesas-tpu-pwm.2", &mstp_clks[MSTP302]), /* TPU2 */ + CLKDEV_DEV_ID("renesas-tpu-pwm.3", &mstp_clks[MSTP301]), /* TPU3 */ + CLKDEV_DEV_ID("renesas-tpu-pwm.4", &mstp_clks[MSTP300]), /* TPU4 */ + CLKDEV_DEV_ID("i2c-sh_mobile.3", &mstp_clks[MSTP411]), /* I2C3 */ + CLKDEV_DEV_ID("e6826000.i2c", &mstp_clks[MSTP411]), /* I2C3 */ + CLKDEV_DEV_ID("i2c-sh_mobile.4", &mstp_clks[MSTP410]), /* I2C4 */ + CLKDEV_DEV_ID("e6828000.i2c", &mstp_clks[MSTP410]), /* I2C4 */ + CLKDEV_DEV_ID("sh_keysc.0", &mstp_clks[MSTP403]), /* KEYSC */ + CLKDEV_DEV_ID("renesas_intc_irqpin.0", &mstp_clks[MSTP508]), /* INTCA0 */ + CLKDEV_DEV_ID("e6900000.irqpin", &mstp_clks[MSTP508]), /* INTCA0 */ + CLKDEV_DEV_ID("renesas_intc_irqpin.1", &mstp_clks[MSTP508]), /* INTCA0 */ + CLKDEV_DEV_ID("e6900004.irqpin", &mstp_clks[MSTP508]), /* INTCA0 */ + CLKDEV_DEV_ID("renesas_intc_irqpin.2", &mstp_clks[MSTP508]), /* INTCA0 */ + CLKDEV_DEV_ID("e6900008.irqpin", &mstp_clks[MSTP508]), /* INTCA0 */ + CLKDEV_DEV_ID("renesas_intc_irqpin.3", &mstp_clks[MSTP508]), /* INTCA0 */ + CLKDEV_DEV_ID("e690000c.irqpin", &mstp_clks[MSTP508]), /* INTCA0 */ + + /* ICK */ + CLKDEV_ICK_ID("dsit_clk", "sh-mipi-dsi.0", &div6_clks[DIV6_DSIT]), + CLKDEV_ICK_ID("dsit_clk", "sh-mipi-dsi.1", &div6_clks[DIV6_DSIT]), + CLKDEV_ICK_ID("dsip_clk", "sh-mipi-dsi.0", &div6_clks[DIV6_DSI0P]), + CLKDEV_ICK_ID("dsip_clk", "sh-mipi-dsi.1", &div6_clks[DIV6_DSI1P]), + CLKDEV_ICK_ID("dsiphy_clk", "sh-mipi-dsi.0", &dsi0phy_clk), + CLKDEV_ICK_ID("dsiphy_clk", "sh-mipi-dsi.1", &dsi1phy_clk), + CLKDEV_ICK_ID("fck", "sh-cmt-48.1", &mstp_clks[MSTP329]), /* CMT1 */ + CLKDEV_ICK_ID("fck", "e6138000.timer", &mstp_clks[MSTP329]), /* CMT1 */ + CLKDEV_ICK_ID("fck", "sh-tmu.0", &mstp_clks[MSTP125]), /* TMU0 */ +}; + +void __init sh73a0_clock_init(void) +{ + int k, ret = 0; + + /* Set SDHI clocks to a known state */ + __raw_writel(0x108, SD0CKCR); + __raw_writel(0x108, SD1CKCR); + __raw_writel(0x108, SD2CKCR); + + /* detect main clock parent */ + switch ((__raw_readl(CKSCR) >> 28) & 0x03) { + case 0: + main_clk.parent = &sh73a0_extal1_clk; + break; + case 1: + main_clk.parent = &extal1_div2_clk; + break; + case 2: + main_clk.parent = &sh73a0_extal2_clk; + break; + case 3: + main_clk.parent = &extal2_div2_clk; + break; + } + + for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++) + ret = clk_register(main_clks[k]); + + if (!ret) { + ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table); + if (!ret) + div4_clk_extend(); + } + + if (!ret) + ret = sh_clk_div6_reparent_register(div6_clks, DIV6_NR); + + if (!ret) + ret = sh_clk_mstp_register(mstp_clks, MSTP_NR); + + for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++) + ret = clk_register(late_main_clks[k]); + + clkdev_add_table(lookups, ARRAY_SIZE(lookups)); + + if (!ret) + shmobile_clk_init(); + else + panic("failed to setup sh73a0 clocks\n"); +} |