diff options
Diffstat (limited to 'arch/arm/mach-shmobile/clock-r8a7740.c')
| -rw-r--r-- | arch/arm/mach-shmobile/clock-r8a7740.c | 125 |
1 files changed, 123 insertions, 2 deletions
diff --git a/arch/arm/mach-shmobile/clock-r8a7740.c b/arch/arm/mach-shmobile/clock-r8a7740.c index 99c4d743a99c..81b54a6af20f 100644 --- a/arch/arm/mach-shmobile/clock-r8a7740.c +++ b/arch/arm/mach-shmobile/clock-r8a7740.c @@ -47,6 +47,7 @@ #define PLLC01CR 0xe6150028 #define SUBCKCR 0xe6150080 +#define USBCKCR 0xe615008c #define MSTPSR0 0xe6150030 #define MSTPSR1 0xe6150038 @@ -181,6 +182,95 @@ static struct clk pllc1_div2_clk = { .parent = &pllc1_clk, }; +/* USB clock */ +static struct clk *usb24s_parents[] = { + [0] = &system_clk, + [1] = &extal2_clk +}; + +static int usb24s_enable(struct clk *clk) +{ + __raw_writel(__raw_readl(USBCKCR) & ~(1 << 8), USBCKCR); + + return 0; +} + +static void usb24s_disable(struct clk *clk) +{ + __raw_writel(__raw_readl(USBCKCR) | (1 << 8), USBCKCR); +} + +static int usb24s_set_parent(struct clk *clk, struct clk *parent) +{ + int i, ret; + u32 val; + + if (!clk->parent_table || !clk->parent_num) + return -EINVAL; + + /* Search the parent */ + for (i = 0; i < clk->parent_num; i++) + if (clk->parent_table[i] == parent) + break; + + if (i == clk->parent_num) + return -ENODEV; + + ret = clk_reparent(clk, parent); + if (ret < 0) + return ret; + + val = __raw_readl(USBCKCR); + val &= ~(1 << 7); + val |= i << 7; + __raw_writel(val, USBCKCR); + + return 0; +} + +static struct sh_clk_ops usb24s_clk_ops = { + .recalc = followparent_recalc, + .enable = usb24s_enable, + .disable = usb24s_disable, + .set_parent = usb24s_set_parent, +}; + +static struct clk usb24s_clk = { + .ops = &usb24s_clk_ops, + .parent_table = usb24s_parents, + .parent_num = ARRAY_SIZE(usb24s_parents), + .parent = &system_clk, +}; + +static unsigned long usb24_recalc(struct clk *clk) +{ + return clk->parent->rate / + ((__raw_readl(USBCKCR) & (1 << 6)) ? 1 : 2); +}; + +static int usb24_set_rate(struct clk *clk, unsigned long rate) +{ + u32 val; + + /* closer to which ? parent->rate or parent->rate/2 */ + val = __raw_readl(USBCKCR); + val &= ~(1 << 6); + val |= (rate > (clk->parent->rate / 4) * 3) << 6; + __raw_writel(val, USBCKCR); + + return 0; +} + +static struct sh_clk_ops usb24_clk_ops = { + .recalc = usb24_recalc, + .set_rate = usb24_set_rate, +}; + +static struct clk usb24_clk = { + .ops = &usb24_clk_ops, + .parent = &usb24s_clk, +}; + struct clk *main_clks[] = { &extalr_clk, &extal1_clk, @@ -196,6 +286,8 @@ struct clk *main_clks[] = { &pllc0_clk, &pllc1_clk, &pllc1_div2_clk, + &usb24s_clk, + &usb24_clk, }; static void div4_kick(struct clk *clk) @@ -223,7 +315,7 @@ static struct clk_div4_table div4_table = { enum { DIV4_I, DIV4_ZG, DIV4_B, DIV4_M1, DIV4_HP, - DIV4_HPP, DIV4_S, DIV4_ZB, DIV4_M3, DIV4_CP, + DIV4_HPP, DIV4_USBP, DIV4_S, DIV4_ZB, DIV4_M3, DIV4_CP, DIV4_NR }; @@ -234,6 +326,7 @@ struct clk div4_clks[DIV4_NR] = { [DIV4_M1] = SH_CLK_DIV4(&pllc1_clk, FRQCRA, 4, 0x6fff, CLK_ENABLE_ON_INIT), [DIV4_HP] = SH_CLK_DIV4(&pllc1_clk, FRQCRB, 4, 0x6fff, 0), [DIV4_HPP] = SH_CLK_DIV4(&pllc1_clk, FRQCRC, 20, 0x6fff, 0), + [DIV4_USBP] = SH_CLK_DIV4(&pllc1_clk, FRQCRC, 16, 0x6fff, 0), [DIV4_S] = SH_CLK_DIV4(&pllc1_clk, FRQCRC, 12, 0x6fff, 0), [DIV4_ZB] = SH_CLK_DIV4(&pllc1_clk, FRQCRC, 8, 0x6fff, 0), [DIV4_M3] = SH_CLK_DIV4(&pllc1_clk, FRQCRC, 4, 0x6fff, 0), @@ -257,7 +350,10 @@ enum { MSTP222, MSTP207, MSTP206, MSTP204, MSTP203, MSTP202, MSTP201, MSTP200, - MSTP329, MSTP323, + MSTP329, MSTP328, MSTP323, MSTP320, + MSTP314, MSTP313, MSTP312, + + MSTP416, MSTP415, MSTP407, MSTP406, MSTP_NR }; @@ -280,7 +376,17 @@ static struct clk mstp_clks[MSTP_NR] = { [MSTP200] = SH_CLK_MSTP32(&div6_clks[DIV6_SUB], SMSTPCR2, 0, 0), /* SCIFA4 */ [MSTP329] = SH_CLK_MSTP32(&r_clk, SMSTPCR3, 29, 0), /* CMT10 */ + [MSTP328] = SH_CLK_MSTP32(&div4_clks[DIV4_HP], SMSTPCR3, 28, 0), /* FSI */ [MSTP323] = SH_CLK_MSTP32(&div6_clks[DIV6_SUB], SMSTPCR3, 23, 0), /* IIC1 */ + [MSTP320] = SH_CLK_MSTP32(&div4_clks[DIV4_HP], SMSTPCR3, 20, 0), /* USBF */ + [MSTP314] = SH_CLK_MSTP32(&div4_clks[DIV4_HP], SMSTPCR3, 14, 0), /* SDHI0 */ + [MSTP313] = SH_CLK_MSTP32(&div4_clks[DIV4_HP], SMSTPCR3, 13, 0), /* SDHI1 */ + [MSTP312] = SH_CLK_MSTP32(&div4_clks[DIV4_HP], SMSTPCR3, 12, 0), /* MMC */ + + [MSTP416] = SH_CLK_MSTP32(&div4_clks[DIV4_HP], SMSTPCR4, 16, 0), /* USBHOST */ + [MSTP415] = SH_CLK_MSTP32(&div4_clks[DIV4_HP], SMSTPCR4, 15, 0), /* SDHI2 */ + [MSTP407] = SH_CLK_MSTP32(&div4_clks[DIV4_HP], SMSTPCR4, 7, 0), /* USB-Func */ + [MSTP406] = SH_CLK_MSTP32(&div4_clks[DIV4_HP], SMSTPCR4, 6, 0), /* USB Phy */ }; static struct clk_lookup lookups[] = { @@ -299,6 +405,7 @@ static struct clk_lookup lookups[] = { CLKDEV_CON_ID("pllc0_clk", &pllc0_clk), CLKDEV_CON_ID("pllc1_clk", &pllc1_clk), CLKDEV_CON_ID("pllc1_div2_clk", &pllc1_div2_clk), + CLKDEV_CON_ID("usb24s", &usb24s_clk), /* DIV4 clocks */ CLKDEV_CON_ID("i_clk", &div4_clks[DIV4_I]), @@ -334,7 +441,21 @@ static struct clk_lookup lookups[] = { CLKDEV_DEV_ID("sh-sci.6", &mstp_clks[MSTP230]), CLKDEV_DEV_ID("sh_cmt.10", &mstp_clks[MSTP329]), + CLKDEV_DEV_ID("sh_fsi2", &mstp_clks[MSTP328]), CLKDEV_DEV_ID("i2c-sh_mobile.1", &mstp_clks[MSTP323]), + CLKDEV_DEV_ID("renesas_usbhs", &mstp_clks[MSTP320]), + CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP314]), + CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP313]), + CLKDEV_DEV_ID("sh_mmcif", &mstp_clks[MSTP312]), + + CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP415]), + + /* ICK */ + CLKDEV_ICK_ID("host", "renesas_usbhs", &mstp_clks[MSTP416]), + CLKDEV_ICK_ID("func", "renesas_usbhs", &mstp_clks[MSTP407]), + CLKDEV_ICK_ID("phy", "renesas_usbhs", &mstp_clks[MSTP406]), + CLKDEV_ICK_ID("pci", "renesas_usbhs", &div4_clks[DIV4_USBP]), + CLKDEV_ICK_ID("usb24", "renesas_usbhs", &usb24_clk), }; void __init r8a7740_clock_init(u8 md_ck) |