diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-shmobile/clock-r8a7779.c | 76 |
1 files changed, 59 insertions, 17 deletions
diff --git a/arch/arm/mach-shmobile/clock-r8a7779.c b/arch/arm/mach-shmobile/clock-r8a7779.c index 8a901068a53..29c33063dc9 100644 --- a/arch/arm/mach-shmobile/clock-r8a7779.c +++ b/arch/arm/mach-shmobile/clock-r8a7779.c @@ -45,36 +45,75 @@ static struct clk_mapping cpg_mapping = { .len = 0x80, }; -static struct clk clkp = { - .rate = 62500000, /* FIXME: shortcut */ - .flags = CLK_ENABLE_ON_INIT, - .mapping = &cpg_mapping, +/* + * Default rate for the root input clock, reset this with clk_set_rate() + * from the platform code. + */ +static struct clk plla_clk = { + .rate = 1500000000, + .mapping = &cpg_mapping, }; static struct clk *main_clks[] = { - &clkp, + &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), }; enum { MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021, MSTP016, MSTP015, MSTP014, MSTP_NR }; -#define MSTP(_parent, _reg, _bit, _flags) \ - SH_CLK_MSTP32(_parent, _reg, _bit, _flags) - static struct clk mstp_clks[MSTP_NR] = { - [MSTP026] = MSTP(&clkp, MSTPCR0, 26, 0), /* SCIF0 */ - [MSTP025] = MSTP(&clkp, MSTPCR0, 25, 0), /* SCIF1 */ - [MSTP024] = MSTP(&clkp, MSTPCR0, 24, 0), /* SCIF2 */ - [MSTP023] = MSTP(&clkp, MSTPCR0, 23, 0), /* SCIF3 */ - [MSTP022] = MSTP(&clkp, MSTPCR0, 22, 0), /* SCIF4 */ - [MSTP021] = MSTP(&clkp, MSTPCR0, 21, 0), /* SCIF5 */ - [MSTP016] = MSTP(&clkp, MSTPCR0, 16, 0), /* TMU0 */ - [MSTP015] = MSTP(&clkp, MSTPCR0, 15, 0), /* TMU1 */ - [MSTP014] = MSTP(&clkp, MSTPCR0, 14, 0), /* TMU2 */ + [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 */ }; static struct clk_lookup lookups[] = { + /* main clocks */ + CLKDEV_CON_ID("plla_clk", &plla_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]), + /* MSTP32 clocks */ CLKDEV_DEV_ID("sh_tmu.0", &mstp_clks[MSTP016]), /* TMU00 */ CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP016]), /* TMU01 */ @@ -94,6 +133,9 @@ void __init r8a7779_clock_init(void) ret = clk_register(main_clks[k]); if (!ret) + ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table); + + if (!ret) ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR); clkdev_add_table(lookups, ARRAY_SIZE(lookups)); |