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/*
* 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("fck", "sh-tmu.0", &mstp_clks[MSTP016]),
CLKDEV_ICK_ID("fck", "sh-tmu.1", &mstp_clks[MSTP015]),
CLKDEV_ICK_ID("fck", "sh-tmu.2", &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("sh7734-gether.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_mstp_register(mstp_clks, MSTP_NR);
return ret;
}
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