diff options
Diffstat (limited to 'arch/arm/mach-shmobile/clock-r8a7740.c')
| -rw-r--r-- | arch/arm/mach-shmobile/clock-r8a7740.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/clock-r8a7740.c b/arch/arm/mach-shmobile/clock-r8a7740.c index 6729e003218..eac49d59782 100644 --- a/arch/arm/mach-shmobile/clock-r8a7740.c +++ b/arch/arm/mach-shmobile/clock-r8a7740.c @@ -65,6 +65,9 @@ #define SMSTPCR3 IOMEM(0xe615013c) #define SMSTPCR4 IOMEM(0xe6150140) +#define FSIDIVA IOMEM(0xFE1F8000) +#define FSIDIVB IOMEM(0xFE1F8008) + /* Fixed 32 KHz root clock from EXTALR pin */ static struct clk extalr_clk = { .rate = 32768, @@ -188,6 +191,22 @@ static struct clk pllc1_div2_clk = { }; /* USB clock */ +/* + * USBCKCR is controlling usb24 clock + * bit[7] : parent clock + * bit[6] : clock divide rate + * And this bit[7] is used as a "usb24s" from other devices. + * (Video clock / Sub clock / SPU clock) + * You can controll this clock as a below. + * + * struct clk *usb24 = clk_get(dev, "usb24"); + * struct clk *usb24s = clk_get(NULL, "usb24s"); + * struct clk *system = clk_get(NULL, "system_clk"); + * int rate = clk_get_rate(system); + * + * clk_set_parent(usb24s, system); // for bit[7] + * clk_set_rate(usb24, rate / 2); // for bit[6] + */ static struct clk *usb24s_parents[] = { [0] = &system_clk, [1] = &extal2_clk @@ -427,6 +446,14 @@ static struct clk *late_main_clks[] = { &hdmi2_clk, }; +/* FSI DIV */ +enum { FSIDIV_A, FSIDIV_B, FSIDIV_REPARENT_NR }; + +static struct clk fsidivs[] = { + [FSIDIV_A] = SH_CLK_FSIDIV(FSIDIVA, &div6_reparent_clks[DIV6_FSIA]), + [FSIDIV_B] = SH_CLK_FSIDIV(FSIDIVB, &div6_reparent_clks[DIV6_FSIB]), +}; + /* MSTP */ enum { DIV4_I, DIV4_ZG, DIV4_B, DIV4_M1, DIV4_HP, @@ -596,6 +623,10 @@ static struct clk_lookup lookups[] = { CLKDEV_ICK_ID("icka", "sh_fsi2", &div6_reparent_clks[DIV6_FSIA]), CLKDEV_ICK_ID("ickb", "sh_fsi2", &div6_reparent_clks[DIV6_FSIB]), + CLKDEV_ICK_ID("diva", "sh_fsi2", &fsidivs[FSIDIV_A]), + CLKDEV_ICK_ID("divb", "sh_fsi2", &fsidivs[FSIDIV_B]), + CLKDEV_ICK_ID("xcka", "sh_fsi2", &fsiack_clk), + CLKDEV_ICK_ID("xckb", "sh_fsi2", &fsibck_clk), }; void __init r8a7740_clock_init(u8 md_ck) @@ -641,6 +672,9 @@ void __init r8a7740_clock_init(u8 md_ck) for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++) ret = clk_register(late_main_clks[k]); + if (!ret) + ret = sh_clk_fsidiv_register(fsidivs, FSIDIV_REPARENT_NR); + clkdev_add_table(lookups, ARRAY_SIZE(lookups)); if (!ret) |