diff options
Diffstat (limited to 'arch/arm/mach-shmobile/clock-r8a7779.c')
| -rw-r--r-- | arch/arm/mach-shmobile/clock-r8a7779.c | 221 |
1 files changed, 135 insertions, 86 deletions
diff --git a/arch/arm/mach-shmobile/clock-r8a7779.c b/arch/arm/mach-shmobile/clock-r8a7779.c index 1db36537255..31d5cd4d978 100644 --- a/arch/arm/mach-shmobile/clock-r8a7779.c +++ b/arch/arm/mach-shmobile/clock-r8a7779.c @@ -17,13 +17,36 @@ * 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/bitops.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/io.h> #include <linux/sh_clk.h> #include <linux/clkdev.h> +#include <mach/clock.h> #include <mach/common.h> +/* + * MD1 = 1 MD1 = 0 + * (PLLA = 1500) (PLLA = 1600) + * (MHz) (MHz) + *------------------------------------------------+-------------------- + * clkz 1000 (2/3) 800 (1/2) + * clkzs 250 (1/6) 200 (1/8) + * clki 750 (1/2) 800 (1/2) + * clks 250 (1/6) 200 (1/8) + * clks1 125 (1/12) 100 (1/16) + * clks3 187.5 (1/8) 200 (1/8) + * clks4 93.7 (1/16) 100 (1/16) + * clkp 62.5 (1/24) 50 (1/32) + * clkg 62.5 (1/24) 66.6 (1/24) + * clkb, CLKOUT + * (MD2 = 0) 62.5 (1/24) 66.6 (1/24) + * (MD2 = 1) 41.6 (1/36) 50 (1/32) +*/ + +#define MD(nr) BIT(nr) + #define FRQMR IOMEM(0xffc80014) #define MSTPCR0 IOMEM(0xffc80030) #define MSTPCR1 IOMEM(0xffc80034) @@ -36,6 +59,9 @@ #define MSTPCR6 IOMEM(0xffc80058) #define MSTPCR7 IOMEM(0xffc80040) +#define MODEMR 0xffcc0020 + + /* ioremap() through clock mapping mandatory to avoid * collision with ARM coherent DMA virtual memory range. */ @@ -50,44 +76,44 @@ static struct clk_mapping cpg_mapping = { * from the platform code. */ static struct clk plla_clk = { - .rate = 1500000000, + /* .rate will be updated on r8a7779_clock_init() */ .mapping = &cpg_mapping, }; +/* + * clock ratio of these clock will be updated + * on r8a7779_clock_init() + */ +SH_FIXED_RATIO_CLK_SET(clkz_clk, plla_clk, 1, 1); +SH_FIXED_RATIO_CLK_SET(clkzs_clk, plla_clk, 1, 1); +SH_FIXED_RATIO_CLK_SET(clki_clk, plla_clk, 1, 1); +SH_FIXED_RATIO_CLK_SET(clks_clk, plla_clk, 1, 1); +SH_FIXED_RATIO_CLK_SET(clks1_clk, plla_clk, 1, 1); +SH_FIXED_RATIO_CLK_SET(clks3_clk, plla_clk, 1, 1); +SH_FIXED_RATIO_CLK_SET(clks4_clk, plla_clk, 1, 1); +SH_FIXED_RATIO_CLK_SET(clkb_clk, plla_clk, 1, 1); +SH_FIXED_RATIO_CLK_SET(clkout_clk, plla_clk, 1, 1); +SH_FIXED_RATIO_CLK_SET(clkp_clk, plla_clk, 1, 1); +SH_FIXED_RATIO_CLK_SET(clkg_clk, plla_clk, 1, 1); + static struct clk *main_clks[] = { &plla_clk, -}; - -static int divisors[] = { 0, 0, 0, 6, 8, 12, 16, 0, 24, 32, 36, 0, 0, 0, 0, 0 }; - -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, -}; - -enum { DIV4_S, DIV4_OUT, DIV4_S4, DIV4_S3, DIV4_S1, DIV4_P, DIV4_NR }; - -static struct clk div4_clks[DIV4_NR] = { - [DIV4_S] = SH_CLK_DIV4(&plla_clk, FRQMR, 20, - 0x0018, CLK_ENABLE_ON_INIT), - [DIV4_OUT] = SH_CLK_DIV4(&plla_clk, FRQMR, 16, - 0x0700, CLK_ENABLE_ON_INIT), - [DIV4_S4] = SH_CLK_DIV4(&plla_clk, FRQMR, 12, - 0x0040, CLK_ENABLE_ON_INIT), - [DIV4_S3] = SH_CLK_DIV4(&plla_clk, FRQMR, 8, - 0x0010, CLK_ENABLE_ON_INIT), - [DIV4_S1] = SH_CLK_DIV4(&plla_clk, FRQMR, 4, - 0x0060, CLK_ENABLE_ON_INIT), - [DIV4_P] = SH_CLK_DIV4(&plla_clk, FRQMR, 0, - 0x0300, CLK_ENABLE_ON_INIT), + &clkz_clk, + &clkzs_clk, + &clki_clk, + &clks_clk, + &clks1_clk, + &clks3_clk, + &clks4_clk, + &clkb_clk, + &clkout_clk, + &clkp_clk, + &clkg_clk, }; enum { MSTP323, MSTP322, MSTP321, MSTP320, - MSTP101, MSTP100, + MSTP115, MSTP114, + MSTP103, MSTP101, MSTP100, MSTP030, MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021, MSTP016, MSTP015, MSTP014, @@ -95,50 +121,29 @@ enum { MSTP323, MSTP322, MSTP321, MSTP320, MSTP_NR }; static struct clk mstp_clks[MSTP_NR] = { - [MSTP323] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 23, 0), /* SDHI0 */ - [MSTP322] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 22, 0), /* SDHI1 */ - [MSTP321] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 21, 0), /* SDHI2 */ - [MSTP320] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 20, 0), /* SDHI3 */ - [MSTP101] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 1, 0), /* USB2 */ - [MSTP100] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 0, 0), /* USB0/1 */ - [MSTP030] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 30, 0), /* I2C0 */ - [MSTP029] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 29, 0), /* I2C1 */ - [MSTP028] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 28, 0), /* I2C2 */ - [MSTP027] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 27, 0), /* I2C3 */ - [MSTP026] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 26, 0), /* SCIF0 */ - [MSTP025] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 25, 0), /* SCIF1 */ - [MSTP024] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 24, 0), /* SCIF2 */ - [MSTP023] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 23, 0), /* SCIF3 */ - [MSTP022] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 22, 0), /* SCIF4 */ - [MSTP021] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 21, 0), /* SCIF5 */ - [MSTP016] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 16, 0), /* TMU0 */ - [MSTP015] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 15, 0), /* TMU1 */ - [MSTP014] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 14, 0), /* TMU2 */ - [MSTP007] = SH_CLK_MSTP32(&div4_clks[DIV4_S], MSTPCR0, 7, 0), /* HSPI */ -}; - -static unsigned long mul4_recalc(struct clk *clk) -{ - return clk->parent->rate * 4; -} - -static struct sh_clk_ops mul4_clk_ops = { - .recalc = mul4_recalc, -}; - -struct clk clkz_clk = { - .ops = &mul4_clk_ops, - .parent = &div4_clks[DIV4_S], -}; - -struct clk clkzs_clk = { - /* clks x 4 / 4 = clks */ - .parent = &div4_clks[DIV4_S], -}; - -static struct clk *late_main_clks[] = { - &clkz_clk, - &clkzs_clk, + [MSTP323] = SH_CLK_MSTP32(&clkp_clk, MSTPCR3, 23, 0), /* SDHI0 */ + [MSTP322] = SH_CLK_MSTP32(&clkp_clk, MSTPCR3, 22, 0), /* SDHI1 */ + [MSTP321] = SH_CLK_MSTP32(&clkp_clk, MSTPCR3, 21, 0), /* SDHI2 */ + [MSTP320] = SH_CLK_MSTP32(&clkp_clk, MSTPCR3, 20, 0), /* SDHI3 */ + [MSTP115] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 15, 0), /* SATA */ + [MSTP114] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 14, 0), /* Ether */ + [MSTP103] = SH_CLK_MSTP32(&clks_clk, MSTPCR1, 3, 0), /* DU */ + [MSTP101] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 1, 0), /* USB2 */ + [MSTP100] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 0, 0), /* USB0/1 */ + [MSTP030] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 30, 0), /* I2C0 */ + [MSTP029] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 29, 0), /* I2C1 */ + [MSTP028] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 28, 0), /* I2C2 */ + [MSTP027] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 27, 0), /* I2C3 */ + [MSTP026] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 26, 0), /* SCIF0 */ + [MSTP025] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 25, 0), /* SCIF1 */ + [MSTP024] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 24, 0), /* SCIF2 */ + [MSTP023] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 23, 0), /* SCIF3 */ + [MSTP022] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 22, 0), /* SCIF4 */ + [MSTP021] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 21, 0), /* SCIF5 */ + [MSTP016] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 16, 0), /* TMU0 */ + [MSTP015] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 15, 0), /* TMU1 */ + [MSTP014] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 14, 0), /* TMU2 */ + [MSTP007] = SH_CLK_MSTP32(&clks_clk, MSTPCR0, 7, 0), /* HSPI */ }; static struct clk_lookup lookups[] = { @@ -148,14 +153,17 @@ static struct clk_lookup lookups[] = { CLKDEV_CON_ID("clkzs_clk", &clkzs_clk), /* DIV4 clocks */ - CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_S]), - CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_OUT]), - CLKDEV_CON_ID("shyway4_clk", &div4_clks[DIV4_S4]), - CLKDEV_CON_ID("shyway3_clk", &div4_clks[DIV4_S3]), - CLKDEV_CON_ID("shyway1_clk", &div4_clks[DIV4_S1]), - CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]), + CLKDEV_CON_ID("shyway_clk", &clks_clk), + CLKDEV_CON_ID("bus_clk", &clkout_clk), + CLKDEV_CON_ID("shyway4_clk", &clks4_clk), + CLKDEV_CON_ID("shyway3_clk", &clks3_clk), + CLKDEV_CON_ID("shyway1_clk", &clks1_clk), + CLKDEV_CON_ID("peripheral_clk", &clkp_clk), /* MSTP32 clocks */ + CLKDEV_DEV_ID("sata_rcar", &mstp_clks[MSTP115]), /* SATA */ + CLKDEV_DEV_ID("fc600000.sata", &mstp_clks[MSTP115]), /* SATA w/DT */ + CLKDEV_DEV_ID("sh-eth", &mstp_clks[MSTP114]), /* Ether */ CLKDEV_DEV_ID("ehci-platform.1", &mstp_clks[MSTP101]), /* USB EHCI port2 */ CLKDEV_DEV_ID("ohci-platform.1", &mstp_clks[MSTP101]), /* USB OHCI port2 */ CLKDEV_DEV_ID("ehci-platform.0", &mstp_clks[MSTP100]), /* USB EHCI port0/1 */ @@ -180,24 +188,65 @@ static struct clk_lookup lookups[] = { CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP322]), /* SDHI1 */ CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP321]), /* SDHI2 */ CLKDEV_DEV_ID("sh_mobile_sdhi.3", &mstp_clks[MSTP320]), /* SDHI3 */ + CLKDEV_DEV_ID("rcar-du.0", &mstp_clks[MSTP103]), /* DU */ }; void __init r8a7779_clock_init(void) { + void __iomem *modemr = ioremap_nocache(MODEMR, PAGE_SIZE); + u32 mode; int k, ret = 0; + BUG_ON(!modemr); + mode = ioread32(modemr); + iounmap(modemr); + + if (mode & MD(1)) { + plla_clk.rate = 1500000000; + + SH_CLK_SET_RATIO(&clkz_clk_ratio, 2, 3); + SH_CLK_SET_RATIO(&clkzs_clk_ratio, 1, 6); + SH_CLK_SET_RATIO(&clki_clk_ratio, 1, 2); + SH_CLK_SET_RATIO(&clks_clk_ratio, 1, 6); + SH_CLK_SET_RATIO(&clks1_clk_ratio, 1, 12); + SH_CLK_SET_RATIO(&clks3_clk_ratio, 1, 8); + SH_CLK_SET_RATIO(&clks4_clk_ratio, 1, 16); + SH_CLK_SET_RATIO(&clkp_clk_ratio, 1, 24); + SH_CLK_SET_RATIO(&clkg_clk_ratio, 1, 24); + if (mode & MD(2)) { + SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 36); + SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 36); + } else { + SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 24); + SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 24); + } + } else { + plla_clk.rate = 1600000000; + + SH_CLK_SET_RATIO(&clkz_clk_ratio, 1, 2); + SH_CLK_SET_RATIO(&clkzs_clk_ratio, 1, 8); + SH_CLK_SET_RATIO(&clki_clk_ratio, 1, 2); + SH_CLK_SET_RATIO(&clks_clk_ratio, 1, 8); + SH_CLK_SET_RATIO(&clks1_clk_ratio, 1, 16); + SH_CLK_SET_RATIO(&clks3_clk_ratio, 1, 8); + SH_CLK_SET_RATIO(&clks4_clk_ratio, 1, 16); + SH_CLK_SET_RATIO(&clkp_clk_ratio, 1, 32); + SH_CLK_SET_RATIO(&clkg_clk_ratio, 1, 24); + if (mode & MD(2)) { + SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 32); + SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 32); + } else { + SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 24); + SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 24); + } + } + 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_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) |