--- /dev/null
--- /dev/null
- 24, 0, 36, 48 };
+ +/*
+ + * 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.
+ + *
+ + * You should have received a copy of the GNU General Public License
+ + * along with this program; if not, write to the Free Software
+ + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ + */
+ +#include <linux/init.h>
+ +#include <linux/kernel.h>
+ +#include <linux/io.h>
+ +#include <linux/sh_clk.h>
+ +#include <mach/common.h>
+ +#include <asm/clkdev.h>
+ +
+ +#define FRQCRA 0xe6150000
+ +#define FRQCRB 0xe6150004
+ +#define FRQCRD 0xe61500e4
+ +#define VCLKCR1 0xe6150008
+ +#define VCLKCR2 0xe615000C
+ +#define VCLKCR3 0xe615001C
+ +#define ZBCKCR 0xe6150010
+ +#define FLCKCR 0xe6150014
+ +#define SD0CKCR 0xe6150074
+ +#define SD1CKCR 0xe6150078
+ +#define SD2CKCR 0xe615007C
+ +#define FSIACKCR 0xe6150018
+ +#define FSIBCKCR 0xe6150090
+ +#define SUBCKCR 0xe6150080
+ +#define SPUACKCR 0xe6150084
+ +#define SPUVCKCR 0xe6150094
+ +#define MSUCKCR 0xe6150088
+ +#define HSICKCR 0xe615008C
+ +#define MFCK1CR 0xe6150098
+ +#define MFCK2CR 0xe615009C
+ +#define DSITCKCR 0xe6150060
+ +#define DSI0PCKCR 0xe6150064
+ +#define DSI1PCKCR 0xe6150068
+ +#define DSI0PHYCR 0xe615006C
+ +#define DSI1PHYCR 0xe6150070
+ +#define PLLECR 0xe61500d0
+ +#define PLL0CR 0xe61500d8
+ +#define PLL1CR 0xe6150028
+ +#define PLL2CR 0xe615002c
+ +#define PLL3CR 0xe61500dc
+ +#define SMSTPCR0 0xe6150130
+ +#define SMSTPCR1 0xe6150134
+ +#define SMSTPCR2 0xe6150138
+ +#define SMSTPCR3 0xe615013c
+ +#define SMSTPCR4 0xe6150140
+ +#define SMSTPCR5 0xe6150144
+ +#define CKSCR 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,
+ +};
+ +
+ +/* A fixed divide-by-2 block */
+ +static unsigned long div2_recalc(struct clk *clk)
+ +{
+ + return clk->parent->rate / 2;
+ +}
+ +
+ +static struct clk_ops div2_clk_ops = {
+ + .recalc = div2_recalc,
+ +};
+ +
+ +/* Divide extal1 by two */
+ +static struct clk extal1_div2_clk = {
+ + .ops = &div2_clk_ops,
+ + .parent = &sh73a0_extal1_clk,
+ +};
+ +
+ +/* Divide extal2 by two */
+ +static struct clk extal2_div2_clk = {
+ + .ops = &div2_clk_ops,
+ + .parent = &sh73a0_extal2_clk,
+ +};
+ +
+ +static struct clk_ops main_clk_ops = {
+ + .recalc = followparent_recalc,
+ +};
+ +
+ +/* Main clock */
+ +static struct clk main_clk = {
+ + .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);
+ +
+ + return clk->parent->rate * mult;
+ +}
+ +
+ +static struct 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,
+ +};
+ +
+ +/* Divide PLL1 by two */
+ +static struct clk pll1_div2_clk = {
+ + .ops = &div2_clk_ops,
+ + .parent = &pll1_clk,
+ +};
+ +
+ +static struct clk *main_clks[] = {
+ + &r_clk,
+ + &sh73a0_extal1_clk,
+ + &sh73a0_extal2_clk,
+ + &extal1_div2_clk,
+ + &extal2_div2_clk,
+ + &main_clk,
+ + &pll0_clk,
+ + &pll1_clk,
+ + &pll2_clk,
+ + &pll3_clk,
+ + &pll1_div2_clk,
+ +};
+ +
+ +static void div4_kick(struct clk *clk)
+ +{
+ + unsigned long value;
+ +
+ + /* set KICK bit in FRQCRB to update hardware setting */
+ + value = __raw_readl(FRQCRB);
+ + value |= (1 << 31);
+ + __raw_writel(value, FRQCRB);
+ +}
+ +
+ +static int divisors[] = { 2, 3, 4, 6, 8, 12, 16, 18,
- MSTP116,
++ + 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_ZTR, DIV4_ZT, 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, 0xfff, CLK_ENABLE_ON_INIT),
+ + [DIV4_ZG] = DIV4(FRQCRA, 16, 0xbff, CLK_ENABLE_ON_INIT),
+ + [DIV4_M3] = DIV4(FRQCRA, 8, 0xfff, CLK_ENABLE_ON_INIT),
+ + [DIV4_B] = DIV4(FRQCRA, 8, 0xfff, CLK_ENABLE_ON_INIT),
+ + [DIV4_M1] = DIV4(FRQCRA, 4, 0xfff, 0),
+ + [DIV4_M2] = DIV4(FRQCRA, 0, 0xfff, 0),
+ + [DIV4_Z] = DIV4(FRQCRB, 24, 0xbff, 0),
+ + [DIV4_ZTR] = DIV4(FRQCRB, 20, 0xfff, 0),
+ + [DIV4_ZT] = DIV4(FRQCRB, 16, 0xfff, 0),
+ + [DIV4_ZX] = DIV4(FRQCRB, 12, 0xfff, 0),
+ + [DIV4_HP] = DIV4(FRQCRB, 4, 0xfff, 0),
+ +};
+ +
+ +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 div6_clks[DIV6_NR] = {
+ + [DIV6_VCK1] = SH_CLK_DIV6(&pll1_div2_clk, VCLKCR1, 0),
+ + [DIV6_VCK2] = SH_CLK_DIV6(&pll1_div2_clk, VCLKCR2, 0),
+ + [DIV6_VCK3] = SH_CLK_DIV6(&pll1_div2_clk, VCLKCR3, 0),
+ + [DIV6_ZB1] = SH_CLK_DIV6(&pll1_div2_clk, ZBCKCR, 0),
+ + [DIV6_FLCTL] = SH_CLK_DIV6(&pll1_div2_clk, FLCKCR, 0),
+ + [DIV6_SDHI0] = SH_CLK_DIV6(&pll1_div2_clk, SD0CKCR, 0),
+ + [DIV6_SDHI1] = SH_CLK_DIV6(&pll1_div2_clk, SD1CKCR, 0),
+ + [DIV6_SDHI2] = SH_CLK_DIV6(&pll1_div2_clk, SD2CKCR, 0),
+ + [DIV6_FSIA] = SH_CLK_DIV6(&pll1_div2_clk, FSIACKCR, 0),
+ + [DIV6_FSIB] = SH_CLK_DIV6(&pll1_div2_clk, FSIBCKCR, 0),
+ + [DIV6_SUB] = SH_CLK_DIV6(&sh73a0_extal2_clk, SUBCKCR, 0),
+ + [DIV6_SPUA] = SH_CLK_DIV6(&pll1_div2_clk, SPUACKCR, 0),
+ + [DIV6_SPUV] = SH_CLK_DIV6(&pll1_div2_clk, SPUVCKCR, 0),
+ + [DIV6_MSU] = SH_CLK_DIV6(&pll1_div2_clk, MSUCKCR, 0),
+ + [DIV6_HSI] = SH_CLK_DIV6(&pll1_div2_clk, HSICKCR, 0),
+ + [DIV6_MFG1] = SH_CLK_DIV6(&pll1_div2_clk, MFCK1CR, 0),
+ + [DIV6_MFG2] = SH_CLK_DIV6(&pll1_div2_clk, MFCK2CR, 0),
+ + [DIV6_DSIT] = SH_CLK_DIV6(&pll1_div2_clk, DSITCKCR, 0),
+ + [DIV6_DSI0P] = SH_CLK_DIV6(&pll1_div2_clk, DSI0PCKCR, 0),
+ + [DIV6_DSI1P] = SH_CLK_DIV6(&pll1_div2_clk, DSI1PCKCR, 0),
+ +};
+ +
+ +enum { MSTP001,
- MSTP331, MSTP329, MSTP323,
+++ MSTP125, MSTP116,
+ + MSTP219,
+ + MSTP207, MSTP206, MSTP204, MSTP203, MSTP202, MSTP201, MSTP200,
- CLKDEV_DEV_ID("sh_keysc.0", &mstp_clks[MSTP403]), /* KEYSC0 */
+++ MSTP331, MSTP329, MSTP323, MSTP312,
+ + MSTP411, MSTP410, MSTP403,
+ + 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 */
+++ [MSTP125] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR1, 25, 0), /* TMU0 */
+ + [MSTP116] = MSTP(&div4_clks[DIV4_HP], SMSTPCR1, 16, 0), /* IIC0 */
+ + [MSTP219] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 19, 0), /* SCIFA7 */
+ + [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 */
+ + [MSTP323] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 23, 0), /* IIC1 */
+++ [MSTP312] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 12, 0), /* MMCIF0 */
+ + [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 */
+ +};
+ +
+ +#define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk }
+ +#define CLKDEV_DEV_ID(_id, _clk) { .dev_id = _id, .clk = _clk }
+ +
+ +static struct clk_lookup lookups[] = {
+ + /* main clocks */
+ + CLKDEV_CON_ID("r_clk", &r_clk),
+ +
+ + /* MSTP32 clocks */
+ + CLKDEV_DEV_ID("i2c-sh_mobile.2", &mstp_clks[MSTP001]), /* I2C2 */
+++ CLKDEV_DEV_ID("sh_tmu.0", &mstp_clks[MSTP125]), /* TMU00 */
+++ CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP125]), /* TMU01 */
+ + CLKDEV_DEV_ID("i2c-sh_mobile.0", &mstp_clks[MSTP116]), /* I2C0 */
+ + CLKDEV_DEV_ID("sh-sci.7", &mstp_clks[MSTP219]), /* SCIFA7 */
+ + CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP207]), /* SCIFA5 */
+ + CLKDEV_DEV_ID("sh-sci.8", &mstp_clks[MSTP206]), /* SCIFB */
+ + CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP204]), /* SCIFA0 */
+ + CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP203]), /* SCIFA1 */
+ + CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP202]), /* SCIFA2 */
+ + CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP201]), /* SCIFA3 */
+ + CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP200]), /* SCIFA4 */
+ + CLKDEV_DEV_ID("sh-sci.6", &mstp_clks[MSTP331]), /* SCIFA6 */
+ + CLKDEV_DEV_ID("sh_cmt.10", &mstp_clks[MSTP329]), /* CMT10 */
+ + CLKDEV_DEV_ID("i2c-sh_mobile.1", &mstp_clks[MSTP323]), /* I2C1 */
+++ CLKDEV_DEV_ID("sh_mmcif.0", &mstp_clks[MSTP312]), /* MMCIF0 */
+ + CLKDEV_DEV_ID("i2c-sh_mobile.3", &mstp_clks[MSTP411]), /* I2C3 */
+ + CLKDEV_DEV_ID("i2c-sh_mobile.4", &mstp_clks[MSTP410]), /* I2C4 */
+++ CLKDEV_DEV_ID("sh_keysc.0", &mstp_clks[MSTP403]), /* KEYSC */
+ +};
+ +
+ +void __init sh73a0_clock_init(void)
+ +{
+ + int k, ret = 0;
+ +
+ + /* detect main clock parent */
+ + switch ((__raw_readl(CKSCR) >> 24) & 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)
+ + ret = sh_clk_div6_register(div6_clks, DIV6_NR);
+ +
+ + if (!ret)
+ + ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
+ +
+ + clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+ +
+ + if (!ret)
+ + clk_init();
+ + else
+ + panic("failed to setup sh73a0 clocks\n");
+ +}
projects / cascardo / linux.git / commitdiff