diff options
Diffstat (limited to 'arch/sh/kernel/cpu/sh4a/clock-sh7734.c')
| -rw-r--r-- | arch/sh/kernel/cpu/sh4a/clock-sh7734.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7734.c b/arch/sh/kernel/cpu/sh4a/clock-sh7734.c new file mode 100644 index 000000000000..1697642c1f73 --- /dev/null +++ b/arch/sh/kernel/cpu/sh4a/clock-sh7734.c @@ -0,0 +1,266 @@ +/* + * arch/sh/kernel/cpu/sh4a/clock-sh7734.c + * + * Clock framework for SH7734 + * + * Copyright (C) 2011, 2012 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> + * Copyright (C) 2011, 2012 Renesas Solutions Corp. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/io.h> +#include <linux/clkdev.h> +#include <linux/delay.h> +#include <asm/clock.h> +#include <asm/freq.h> + +static struct clk extal_clk = { + .rate = 33333333, +}; + +#define MODEMR (0xFFCC0020) +#define MODEMR_MASK (0x6) +#define MODEMR_533MHZ (0x2) + +static unsigned long pll_recalc(struct clk *clk) +{ + int mode = 12; + u32 r = __raw_readl(MODEMR); + + if ((r & MODEMR_MASK) & MODEMR_533MHZ) + mode = 16; + + return clk->parent->rate * mode; +} + +static struct sh_clk_ops pll_clk_ops = { + .recalc = pll_recalc, +}; + +static struct clk pll_clk = { + .ops = &pll_clk_ops, + .parent = &extal_clk, + .flags = CLK_ENABLE_ON_INIT, +}; + +static struct clk *main_clks[] = { + &extal_clk, + &pll_clk, +}; + +static int multipliers[] = { 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; +static int divisors[] = { 1, 3, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24 }; + +static struct clk_div_mult_table div4_div_mult_table = { + .divisors = divisors, + .nr_divisors = ARRAY_SIZE(divisors), + .multipliers = multipliers, + .nr_multipliers = ARRAY_SIZE(multipliers), +}; + +static struct clk_div4_table div4_table = { + .div_mult_table = &div4_div_mult_table, +}; + +enum { DIV4_I, DIV4_S, DIV4_B, DIV4_M, DIV4_S1, DIV4_P, DIV4_NR }; + +#define DIV4(_reg, _bit, _mask, _flags) \ + SH_CLK_DIV4(&pll_clk, _reg, _bit, _mask, _flags) + +struct clk div4_clks[DIV4_NR] = { + [DIV4_I] = DIV4(FRQMR1, 28, 0x0003, CLK_ENABLE_ON_INIT), + [DIV4_S] = DIV4(FRQMR1, 20, 0x000C, CLK_ENABLE_ON_INIT), + [DIV4_B] = DIV4(FRQMR1, 16, 0x0140, CLK_ENABLE_ON_INIT), + [DIV4_M] = DIV4(FRQMR1, 12, 0x0004, CLK_ENABLE_ON_INIT), + [DIV4_S1] = DIV4(FRQMR1, 4, 0x0030, CLK_ENABLE_ON_INIT), + [DIV4_P] = DIV4(FRQMR1, 0, 0x0140, CLK_ENABLE_ON_INIT), +}; + +#define MSTPCR0 0xFFC80030 +#define MSTPCR1 0xFFC80034 +#define MSTPCR3 0xFFC8003C + +enum { + MSTP030, MSTP029, /* IIC */ + MSTP026, MSTP025, MSTP024, /* SCIF */ + MSTP023, + MSTP022, MSTP021, + MSTP019, /* HSCIF */ + MSTP016, MSTP015, MSTP014, /* TMU / TIMER */ + MSTP012, MSTP011, MSTP010, MSTP009, MSTP008, /* SSI */ + MSTP007, /* HSPI */ + MSTP115, /* ADMAC */ + MSTP114, /* GETHER */ + MSTP111, /* DMAC */ + MSTP109, /* VIDEOIN1 */ + MSTP108, /* VIDEOIN0 */ + MSTP107, /* RGPVBG */ + MSTP106, /* 2DG */ + MSTP103, /* VIEW */ + MSTP100, /* USB */ + MSTP331, /* MMC */ + MSTP330, /* MIMLB */ + MSTP323, /* SDHI0 */ + MSTP322, /* SDHI1 */ + MSTP321, /* SDHI2 */ + MSTP320, /* RQSPI */ + MSTP319, /* SRC0 */ + MSTP318, /* SRC1 */ + MSTP317, /* RSPI */ + MSTP316, /* RCAN0 */ + MSTP315, /* RCAN1 */ + MSTP314, /* FLTCL */ + MSTP313, /* ADC */ + MSTP312, /* MTU */ + MSTP304, /* IE-BUS */ + MSTP303, /* RTC */ + MSTP302, /* HIF */ + MSTP301, /* STIF0 */ + MSTP300, /* STIF1 */ + MSTP_NR }; + +static struct clk mstp_clks[MSTP_NR] = { + /* MSTPCR0 */ + [MSTP030] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 30, 0), + [MSTP029] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 29, 0), + [MSTP026] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 26, 0), + [MSTP025] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 25, 0), + [MSTP024] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 24, 0), + [MSTP023] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 23, 0), + [MSTP022] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 22, 0), + [MSTP021] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 21, 0), + [MSTP019] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 19, 0), + [MSTP016] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 16, 0), + [MSTP015] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 15, 0), + [MSTP014] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 14, 0), + [MSTP012] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 12, 0), + [MSTP011] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 11, 0), + [MSTP010] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 10, 0), + [MSTP009] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 9, 0), + [MSTP008] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 8, 0), + [MSTP007] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 7, 0), + + /* MSTPCR1 */ + [MSTP115] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 15, 0), + [MSTP114] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 14, 0), + [MSTP111] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 11, 0), + [MSTP109] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 9, 0), + [MSTP108] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 8, 0), + [MSTP107] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 7, 0), + [MSTP106] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 6, 0), + [MSTP103] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 3, 0), + [MSTP100] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 0, 0), + + /* MSTPCR3 */ + [MSTP331] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 31, 0), + [MSTP330] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 30, 0), + [MSTP323] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 23, 0), + [MSTP322] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 22, 0), + [MSTP321] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 21, 0), + [MSTP320] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 20, 0), + [MSTP319] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 19, 0), + [MSTP318] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 18, 0), + [MSTP317] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 17, 0), + [MSTP316] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 16, 0), + [MSTP315] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 15, 0), + [MSTP314] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 14, 0), + [MSTP313] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 13, 0), + [MSTP312] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 12, 0), + [MSTP304] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 4, 0), + [MSTP303] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 3, 0), + [MSTP302] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 2, 0), + [MSTP301] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 1, 0), + [MSTP300] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 0, 0), +}; + +static struct clk_lookup lookups[] = { + /* main clocks */ + CLKDEV_CON_ID("extal", &extal_clk), + CLKDEV_CON_ID("pll_clk", &pll_clk), + + /* clocks */ + CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]), + CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_S]), + CLKDEV_CON_ID("ddr_clk", &div4_clks[DIV4_M]), + CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_B]), + CLKDEV_CON_ID("shyway_clk1", &div4_clks[DIV4_S1]), + CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]), + + /* MSTP32 clocks */ + CLKDEV_DEV_ID("i2c-sh7734.0", &mstp_clks[MSTP030]), + CLKDEV_DEV_ID("i2c-sh7734.1", &mstp_clks[MSTP029]), + CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP026]), + CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP025]), + CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP024]), + CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[MSTP023]), + CLKDEV_ICK_ID("sci_fck", "sh-sci.4", &mstp_clks[MSTP022]), + CLKDEV_ICK_ID("sci_fck", "sh-sci.5", &mstp_clks[MSTP021]), + CLKDEV_CON_ID("hscif", &mstp_clks[MSTP019]), + CLKDEV_ICK_ID("tmu_fck", "sh_tmu.0", &mstp_clks[MSTP016]), + CLKDEV_ICK_ID("tmu_fck", "sh_tmu.1", &mstp_clks[MSTP016]), + CLKDEV_ICK_ID("tmu_fck", "sh_tmu.2", &mstp_clks[MSTP016]), + CLKDEV_ICK_ID("tmu_fck", "sh_tmu.3", &mstp_clks[MSTP015]), + CLKDEV_ICK_ID("tmu_fck", "sh_tmu.4", &mstp_clks[MSTP015]), + CLKDEV_ICK_ID("tmu_fck", "sh_tmu.5", &mstp_clks[MSTP015]), + CLKDEV_ICK_ID("tmu_fck", "sh_tmu.6", &mstp_clks[MSTP014]), + CLKDEV_ICK_ID("tmu_fck", "sh_tmu.7", &mstp_clks[MSTP014]), + CLKDEV_ICK_ID("tmu_fck", "sh_tmu.8", &mstp_clks[MSTP014]), + CLKDEV_CON_ID("ssi0", &mstp_clks[MSTP012]), + CLKDEV_CON_ID("ssi1", &mstp_clks[MSTP011]), + CLKDEV_CON_ID("ssi2", &mstp_clks[MSTP010]), + CLKDEV_CON_ID("ssi3", &mstp_clks[MSTP009]), + CLKDEV_CON_ID("sss", &mstp_clks[MSTP008]), + CLKDEV_CON_ID("hspi", &mstp_clks[MSTP007]), + CLKDEV_CON_ID("usb_fck", &mstp_clks[MSTP100]), + CLKDEV_CON_ID("videoin0", &mstp_clks[MSTP109]), + CLKDEV_CON_ID("videoin1", &mstp_clks[MSTP108]), + CLKDEV_CON_ID("rgpvg", &mstp_clks[MSTP107]), + CLKDEV_CON_ID("2dg", &mstp_clks[MSTP106]), + CLKDEV_CON_ID("view", &mstp_clks[MSTP103]), + + CLKDEV_CON_ID("mmc0", &mstp_clks[MSTP331]), + CLKDEV_CON_ID("mimlb0", &mstp_clks[MSTP330]), + CLKDEV_CON_ID("sdhi0", &mstp_clks[MSTP323]), + CLKDEV_CON_ID("sdhi1", &mstp_clks[MSTP322]), + CLKDEV_CON_ID("sdhi2", &mstp_clks[MSTP321]), + CLKDEV_CON_ID("rqspi0", &mstp_clks[MSTP320]), + CLKDEV_CON_ID("src0", &mstp_clks[MSTP319]), + CLKDEV_CON_ID("src1", &mstp_clks[MSTP318]), + CLKDEV_CON_ID("rsp0", &mstp_clks[MSTP317]), + CLKDEV_CON_ID("rcan0", &mstp_clks[MSTP316]), + CLKDEV_CON_ID("rcan1", &mstp_clks[MSTP315]), + CLKDEV_CON_ID("fltcl0", &mstp_clks[MSTP314]), + CLKDEV_CON_ID("adc0", &mstp_clks[MSTP313]), + CLKDEV_CON_ID("mtu0", &mstp_clks[MSTP312]), + CLKDEV_CON_ID("iebus0", &mstp_clks[MSTP304]), + CLKDEV_DEV_ID("sh-eth.0", &mstp_clks[MSTP114]), + CLKDEV_CON_ID("rtc0", &mstp_clks[MSTP303]), + CLKDEV_CON_ID("hif0", &mstp_clks[MSTP302]), + CLKDEV_CON_ID("stif0", &mstp_clks[MSTP301]), + CLKDEV_CON_ID("stif1", &mstp_clks[MSTP300]), +}; + +int __init arch_clk_init(void) +{ + int i, ret = 0; + + for (i = 0; i < ARRAY_SIZE(main_clks); i++) + ret |= clk_register(main_clks[i]); + + for (i = 0; i < ARRAY_SIZE(lookups); i++) + clkdev_add(&lookups[i]); + + if (!ret) + ret = sh_clk_div4_register(div4_clks, ARRAY_SIZE(div4_clks), + &div4_table); + + if (!ret) + ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR); + + return ret; +} |