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Diffstat (limited to 'arch/arm/mach-shmobile/clock-r8a7778.c')
-rw-r--r--arch/arm/mach-shmobile/clock-r8a7778.c183
1 files changed, 169 insertions, 14 deletions
diff --git a/arch/arm/mach-shmobile/clock-r8a7778.c b/arch/arm/mach-shmobile/clock-r8a7778.c
index cd68552..53798e5 100644
--- a/arch/arm/mach-shmobile/clock-r8a7778.c
+++ b/arch/arm/mach-shmobile/clock-r8a7778.c
@@ -23,9 +23,23 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+/*
+ * MD MD MD MD PLLA PLLB EXTAL clki clkz
+ * 19 18 12 11 (HMz) (MHz) (MHz)
+ *----------------------------------------------------------------------------
+ * 1 0 0 0 x21 x21 38.00 800 800
+ * 1 0 0 1 x24 x24 33.33 800 800
+ * 1 0 1 0 x28 x28 28.50 800 800
+ * 1 0 1 1 x32 x32 25.00 800 800
+ * 1 1 0 1 x24 x21 33.33 800 700
+ * 1 1 1 0 x28 x21 28.50 800 600
+ * 1 1 1 1 x32 x24 25.00 800 600
+ */
+
#include <linux/io.h>
#include <linux/sh_clk.h>
#include <linux/clkdev.h>
+#include <mach/clock.h>
#include <mach/common.h>
#define MSTPCR0 IOMEM(0xffc80030)
@@ -37,6 +51,9 @@
#define MSTPCR4 IOMEM(0xffc80050)
#define MSTPCR5 IOMEM(0xffc80054)
#define MSTPCR6 IOMEM(0xffc80058)
+#define MODEMR 0xFFCC0020
+
+#define MD(nr) BIT(nr)
/* ioremap() through clock mapping mandatory to avoid
* collision with ARM coherent DMA virtual memory range.
@@ -47,37 +64,94 @@ static struct clk_mapping cpg_mapping = {
.len = 0x80,
};
-static struct clk clkp = {
- .rate = 62500000, /* FIXME: shortcut */
- .flags = CLK_ENABLE_ON_INIT,
+static struct clk extal_clk = {
+ /* .rate will be updated on r8a7778_clock_init() */
.mapping = &cpg_mapping,
};
+/*
+ * clock ratio of these clock will be updated
+ * on r8a7778_clock_init()
+ */
+SH_FIXED_RATIO_CLK_SET(plla_clk, extal_clk, 1, 1);
+SH_FIXED_RATIO_CLK_SET(pllb_clk, extal_clk, 1, 1);
+SH_FIXED_RATIO_CLK_SET(i_clk, plla_clk, 1, 1);
+SH_FIXED_RATIO_CLK_SET(s_clk, plla_clk, 1, 1);
+SH_FIXED_RATIO_CLK_SET(s1_clk, plla_clk, 1, 1);
+SH_FIXED_RATIO_CLK_SET(s3_clk, plla_clk, 1, 1);
+SH_FIXED_RATIO_CLK_SET(s4_clk, plla_clk, 1, 1);
+SH_FIXED_RATIO_CLK_SET(b_clk, plla_clk, 1, 1);
+SH_FIXED_RATIO_CLK_SET(out_clk, plla_clk, 1, 1);
+SH_FIXED_RATIO_CLK_SET(p_clk, plla_clk, 1, 1);
+SH_FIXED_RATIO_CLK_SET(g_clk, plla_clk, 1, 1);
+SH_FIXED_RATIO_CLK_SET(z_clk, pllb_clk, 1, 1);
+
static struct clk *main_clks[] = {
- &clkp,
+ &extal_clk,
+ &plla_clk,
+ &pllb_clk,
+ &i_clk,
+ &s_clk,
+ &s1_clk,
+ &s3_clk,
+ &s4_clk,
+ &b_clk,
+ &out_clk,
+ &p_clk,
+ &g_clk,
+ &z_clk,
};
enum {
+ MSTP331,
+ MSTP323, MSTP322, MSTP321,
MSTP114,
- MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021,
+ MSTP100,
+ MSTP030,
+ MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021,
MSTP016, MSTP015,
+ MSTP007,
MSTP_NR };
static struct clk mstp_clks[MSTP_NR] = {
- [MSTP114] = SH_CLK_MSTP32(&clkp, MSTPCR1, 14, 0), /* Ether */
- [MSTP026] = SH_CLK_MSTP32(&clkp, MSTPCR0, 26, 0), /* SCIF0 */
- [MSTP025] = SH_CLK_MSTP32(&clkp, MSTPCR0, 25, 0), /* SCIF1 */
- [MSTP024] = SH_CLK_MSTP32(&clkp, MSTPCR0, 24, 0), /* SCIF2 */
- [MSTP023] = SH_CLK_MSTP32(&clkp, MSTPCR0, 23, 0), /* SCIF3 */
- [MSTP022] = SH_CLK_MSTP32(&clkp, MSTPCR0, 22, 0), /* SCIF4 */
- [MSTP021] = SH_CLK_MSTP32(&clkp, MSTPCR0, 21, 0), /* SCIF5 */
- [MSTP016] = SH_CLK_MSTP32(&clkp, MSTPCR0, 16, 0), /* TMU0 */
- [MSTP015] = SH_CLK_MSTP32(&clkp, MSTPCR0, 15, 0), /* TMU1 */
+ [MSTP331] = SH_CLK_MSTP32(&s4_clk, MSTPCR3, 31, 0), /* MMC */
+ [MSTP323] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 23, 0), /* SDHI0 */
+ [MSTP322] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 22, 0), /* SDHI1 */
+ [MSTP321] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 21, 0), /* SDHI2 */
+ [MSTP114] = SH_CLK_MSTP32(&p_clk, MSTPCR1, 14, 0), /* Ether */
+ [MSTP100] = SH_CLK_MSTP32(&p_clk, MSTPCR1, 0, 0), /* USB0/1 */
+ [MSTP030] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 30, 0), /* I2C0 */
+ [MSTP029] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 29, 0), /* I2C1 */
+ [MSTP028] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 28, 0), /* I2C2 */
+ [MSTP027] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 27, 0), /* I2C3 */
+ [MSTP026] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 26, 0), /* SCIF0 */
+ [MSTP025] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 25, 0), /* SCIF1 */
+ [MSTP024] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 24, 0), /* SCIF2 */
+ [MSTP023] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 23, 0), /* SCIF3 */
+ [MSTP022] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 22, 0), /* SCIF4 */
+ [MSTP021] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 21, 0), /* SCIF5 */
+ [MSTP016] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 16, 0), /* TMU0 */
+ [MSTP015] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 15, 0), /* TMU1 */
+ [MSTP007] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 7, 0), /* HSPI */
};
static struct clk_lookup lookups[] = {
+ /* main */
+ CLKDEV_CON_ID("shyway_clk", &s_clk),
+ CLKDEV_CON_ID("peripheral_clk", &p_clk),
+
/* MSTP32 clocks */
+ CLKDEV_DEV_ID("sh_mmcif", &mstp_clks[MSTP331]), /* MMC */
+ CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP323]), /* SDHI0 */
+ 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-eth", &mstp_clks[MSTP114]), /* Ether */
+ CLKDEV_DEV_ID("ehci-platform", &mstp_clks[MSTP100]), /* USB EHCI port0/1 */
+ CLKDEV_DEV_ID("ohci-platform", &mstp_clks[MSTP100]), /* USB OHCI port0/1 */
+ CLKDEV_DEV_ID("i2c-rcar.0", &mstp_clks[MSTP030]), /* I2C0 */
+ CLKDEV_DEV_ID("i2c-rcar.1", &mstp_clks[MSTP029]), /* I2C1 */
+ CLKDEV_DEV_ID("i2c-rcar.2", &mstp_clks[MSTP028]), /* I2C2 */
+ CLKDEV_DEV_ID("i2c-rcar.3", &mstp_clks[MSTP027]), /* I2C3 */
CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP026]), /* SCIF0 */
CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP025]), /* SCIF1 */
CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP024]), /* SCIF2 */
@@ -86,12 +160,93 @@ static struct clk_lookup lookups[] = {
CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP021]), /* SCIF6 */
CLKDEV_DEV_ID("sh_tmu.0", &mstp_clks[MSTP016]), /* TMU00 */
CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP015]), /* TMU01 */
+ CLKDEV_DEV_ID("sh-hspi.0", &mstp_clks[MSTP007]), /* HSPI0 */
+ CLKDEV_DEV_ID("sh-hspi.1", &mstp_clks[MSTP007]), /* HSPI1 */
+ CLKDEV_DEV_ID("sh-hspi.2", &mstp_clks[MSTP007]), /* HSPI2 */
};
void __init r8a7778_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);
+
+ switch (mode & (MD(19) | MD(18) | MD(12) | MD(11))) {
+ case MD(19):
+ extal_clk.rate = 38000000;
+ SH_CLK_SET_RATIO(&plla_clk_ratio, 21, 1);
+ SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
+ break;
+ case MD(19) | MD(11):
+ extal_clk.rate = 33333333;
+ SH_CLK_SET_RATIO(&plla_clk_ratio, 24, 1);
+ SH_CLK_SET_RATIO(&pllb_clk_ratio, 24, 1);
+ break;
+ case MD(19) | MD(12):
+ extal_clk.rate = 28500000;
+ SH_CLK_SET_RATIO(&plla_clk_ratio, 28, 1);
+ SH_CLK_SET_RATIO(&pllb_clk_ratio, 28, 1);
+ break;
+ case MD(19) | MD(12) | MD(11):
+ extal_clk.rate = 25000000;
+ SH_CLK_SET_RATIO(&plla_clk_ratio, 32, 1);
+ SH_CLK_SET_RATIO(&pllb_clk_ratio, 32, 1);
+ break;
+ case MD(19) | MD(18) | MD(11):
+ extal_clk.rate = 33333333;
+ SH_CLK_SET_RATIO(&plla_clk_ratio, 24, 1);
+ SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
+ break;
+ case MD(19) | MD(18) | MD(12):
+ extal_clk.rate = 28500000;
+ SH_CLK_SET_RATIO(&plla_clk_ratio, 28, 1);
+ SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
+ break;
+ case MD(19) | MD(18) | MD(12) | MD(11):
+ extal_clk.rate = 25000000;
+ SH_CLK_SET_RATIO(&plla_clk_ratio, 32, 1);
+ SH_CLK_SET_RATIO(&pllb_clk_ratio, 24, 1);
+ break;
+ default:
+ BUG();
+ }
+
+ if (mode & MD(1)) {
+ SH_CLK_SET_RATIO(&i_clk_ratio, 1, 1);
+ SH_CLK_SET_RATIO(&s_clk_ratio, 1, 3);
+ SH_CLK_SET_RATIO(&s1_clk_ratio, 1, 6);
+ SH_CLK_SET_RATIO(&s3_clk_ratio, 1, 4);
+ SH_CLK_SET_RATIO(&s4_clk_ratio, 1, 8);
+ SH_CLK_SET_RATIO(&p_clk_ratio, 1, 12);
+ SH_CLK_SET_RATIO(&g_clk_ratio, 1, 12);
+ if (mode & MD(2)) {
+ SH_CLK_SET_RATIO(&b_clk_ratio, 1, 18);
+ SH_CLK_SET_RATIO(&out_clk_ratio, 1, 18);
+ } else {
+ SH_CLK_SET_RATIO(&b_clk_ratio, 1, 12);
+ SH_CLK_SET_RATIO(&out_clk_ratio, 1, 12);
+ }
+ } else {
+ SH_CLK_SET_RATIO(&i_clk_ratio, 1, 1);
+ SH_CLK_SET_RATIO(&s_clk_ratio, 1, 4);
+ SH_CLK_SET_RATIO(&s1_clk_ratio, 1, 8);
+ SH_CLK_SET_RATIO(&s3_clk_ratio, 1, 4);
+ SH_CLK_SET_RATIO(&s4_clk_ratio, 1, 8);
+ SH_CLK_SET_RATIO(&p_clk_ratio, 1, 16);
+ SH_CLK_SET_RATIO(&g_clk_ratio, 1, 12);
+ if (mode & MD(2)) {
+ SH_CLK_SET_RATIO(&b_clk_ratio, 1, 16);
+ SH_CLK_SET_RATIO(&out_clk_ratio, 1, 16);
+ } else {
+ SH_CLK_SET_RATIO(&b_clk_ratio, 1, 12);
+ SH_CLK_SET_RATIO(&out_clk_ratio, 1, 12);
+ }
+ }
+
for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
ret = clk_register(main_clks[k]);
generated by cgit v0.10.2 at 2024-11-04 20:56:06 (GMT)