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Diffstat (limited to 'kernel/arch/arm/mach-shmobile/clock-r8a7778.c')
-rw-r--r--kernel/arch/arm/mach-shmobile/clock-r8a7778.c342
1 files changed, 342 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-shmobile/clock-r8a7778.c b/kernel/arch/arm/mach-shmobile/clock-r8a7778.c
new file mode 100644
index 000000000..e8510c355
--- /dev/null
+++ b/kernel/arch/arm/mach-shmobile/clock-r8a7778.c
@@ -0,0 +1,342 @@
+/*
+ * r8a7778 clock framework support
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ * Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * based on r8a7779
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Copyright (C) 2011 Magnus Damm
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+/*
+ * 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 "clock.h"
+#include "common.h"
+
+#define MSTPCR0 IOMEM(0xffc80030)
+#define MSTPCR1 IOMEM(0xffc80034)
+#define MSTPCR3 IOMEM(0xffc8003c)
+#define MSTPSR1 IOMEM(0xffc80044)
+#define MSTPSR4 IOMEM(0xffc80048)
+#define MSTPSR6 IOMEM(0xffc8004c)
+#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.
+ */
+
+static struct clk_mapping cpg_mapping = {
+ .phys = 0xffc80000,
+ .len = 0x80,
+};
+
+static struct clk extal_clk = {
+ /* .rate will be updated on r8a7778_clock_init() */
+ .mapping = &cpg_mapping,
+};
+
+static struct clk audio_clk_a = {
+};
+
+static struct clk audio_clk_b = {
+};
+
+static struct clk audio_clk_c = {
+};
+
+/*
+ * 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[] = {
+ &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,
+ &audio_clk_a,
+ &audio_clk_b,
+ &audio_clk_c,
+};
+
+enum {
+ MSTP531, MSTP530,
+ MSTP529, MSTP528, MSTP527, MSTP526, MSTP525, MSTP524, MSTP523,
+ MSTP331,
+ MSTP323, MSTP322, MSTP321,
+ MSTP311, MSTP310,
+ MSTP309, MSTP308, MSTP307,
+ MSTP114,
+ MSTP110, MSTP109,
+ MSTP100,
+ MSTP030,
+ MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021,
+ MSTP016, MSTP015, MSTP012, MSTP011, MSTP010,
+ MSTP009, MSTP008, MSTP007,
+ MSTP_NR };
+
+static struct clk mstp_clks[MSTP_NR] = {
+ [MSTP531] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 31, 0), /* SCU0 */
+ [MSTP530] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 30, 0), /* SCU1 */
+ [MSTP529] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 29, 0), /* SCU2 */
+ [MSTP528] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 28, 0), /* SCU3 */
+ [MSTP527] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 27, 0), /* SCU4 */
+ [MSTP526] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 26, 0), /* SCU5 */
+ [MSTP525] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 25, 0), /* SCU6 */
+ [MSTP524] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 24, 0), /* SCU7 */
+ [MSTP523] = SH_CLK_MSTP32(&p_clk, MSTPCR5, 23, 0), /* SCU8 */
+ [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 */
+ [MSTP311] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 11, 0), /* SSI4 */
+ [MSTP310] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 10, 0), /* SSI5 */
+ [MSTP309] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 9, 0), /* SSI6 */
+ [MSTP308] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 8, 0), /* SSI7 */
+ [MSTP307] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 7, 0), /* SSI8 */
+ [MSTP114] = SH_CLK_MSTP32(&p_clk, MSTPCR1, 14, 0), /* Ether */
+ [MSTP110] = SH_CLK_MSTP32(&s_clk, MSTPCR1, 10, 0), /* VIN0 */
+ [MSTP109] = SH_CLK_MSTP32(&s_clk, MSTPCR1, 9, 0), /* VIN1 */
+ [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 */
+ [MSTP012] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 12, 0), /* SSI0 */
+ [MSTP011] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 11, 0), /* SSI1 */
+ [MSTP010] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 10, 0), /* SSI2 */
+ [MSTP009] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 9, 0), /* SSI3 */
+ [MSTP008] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 8, 0), /* SRU */
+ [MSTP007] = SH_CLK_MSTP32(&s_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("ffe4e000.mmc", &mstp_clks[MSTP331]), /* MMC */
+ CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP323]), /* SDHI0 */
+ CLKDEV_DEV_ID("ffe4c000.sd", &mstp_clks[MSTP323]), /* SDHI0 */
+ CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP322]), /* SDHI1 */
+ CLKDEV_DEV_ID("ffe4d000.sd", &mstp_clks[MSTP322]), /* SDHI1 */
+ CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP321]), /* SDHI2 */
+ CLKDEV_DEV_ID("ffe4f000.sd", &mstp_clks[MSTP321]), /* SDHI2 */
+ CLKDEV_DEV_ID("r8a777x-ether", &mstp_clks[MSTP114]), /* Ether */
+ CLKDEV_DEV_ID("r8a7778-vin.0", &mstp_clks[MSTP110]), /* VIN0 */
+ CLKDEV_DEV_ID("r8a7778-vin.1", &mstp_clks[MSTP109]), /* VIN1 */
+ 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("renesas_usbhs", &mstp_clks[MSTP100]), /* USB FUNC */
+ CLKDEV_DEV_ID("i2c-rcar.0", &mstp_clks[MSTP030]), /* I2C0 */
+ CLKDEV_DEV_ID("ffc70000.i2c", &mstp_clks[MSTP030]), /* I2C0 */
+ CLKDEV_DEV_ID("i2c-rcar.1", &mstp_clks[MSTP029]), /* I2C1 */
+ CLKDEV_DEV_ID("ffc71000.i2c", &mstp_clks[MSTP029]), /* I2C1 */
+ CLKDEV_DEV_ID("i2c-rcar.2", &mstp_clks[MSTP028]), /* I2C2 */
+ CLKDEV_DEV_ID("ffc72000.i2c", &mstp_clks[MSTP028]), /* I2C2 */
+ CLKDEV_DEV_ID("i2c-rcar.3", &mstp_clks[MSTP027]), /* I2C3 */
+ CLKDEV_DEV_ID("ffc73000.i2c", &mstp_clks[MSTP027]), /* I2C3 */
+ CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP026]), /* SCIF0 */
+ CLKDEV_DEV_ID("ffe40000.serial", &mstp_clks[MSTP026]), /* SCIF0 */
+ CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP025]), /* SCIF1 */
+ CLKDEV_DEV_ID("ffe41000.serial", &mstp_clks[MSTP025]), /* SCIF1 */
+ CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP024]), /* SCIF2 */
+ CLKDEV_DEV_ID("ffe42000.serial", &mstp_clks[MSTP024]), /* SCIF2 */
+ CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP023]), /* SCIF3 */
+ CLKDEV_DEV_ID("ffe43000.serial", &mstp_clks[MSTP023]), /* SCIF3 */
+ CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP022]), /* SCIF4 */
+ CLKDEV_DEV_ID("ffe44000.serial", &mstp_clks[MSTP022]), /* SCIF4 */
+ CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP021]), /* SCIF6 */
+ CLKDEV_DEV_ID("ffe45000.serial", &mstp_clks[MSTP021]), /* SCIF5 */
+ CLKDEV_DEV_ID("sh-hspi.0", &mstp_clks[MSTP007]), /* HSPI0 */
+ CLKDEV_DEV_ID("fffc7000.spi", &mstp_clks[MSTP007]), /* HSPI0 */
+ CLKDEV_DEV_ID("sh-hspi.1", &mstp_clks[MSTP007]), /* HSPI1 */
+ CLKDEV_DEV_ID("fffc8000.spi", &mstp_clks[MSTP007]), /* HSPI1 */
+ CLKDEV_DEV_ID("sh-hspi.2", &mstp_clks[MSTP007]), /* HSPI2 */
+ CLKDEV_DEV_ID("fffc6000.spi", &mstp_clks[MSTP007]), /* HSPI2 */
+ CLKDEV_DEV_ID("rcar_sound", &mstp_clks[MSTP008]), /* SRU */
+
+ CLKDEV_ICK_ID("clk_a", "rcar_sound", &audio_clk_a),
+ CLKDEV_ICK_ID("clk_b", "rcar_sound", &audio_clk_b),
+ CLKDEV_ICK_ID("clk_c", "rcar_sound", &audio_clk_c),
+ CLKDEV_ICK_ID("clk_i", "rcar_sound", &s1_clk),
+ CLKDEV_ICK_ID("ssi.0", "rcar_sound", &mstp_clks[MSTP012]),
+ CLKDEV_ICK_ID("ssi.1", "rcar_sound", &mstp_clks[MSTP011]),
+ CLKDEV_ICK_ID("ssi.2", "rcar_sound", &mstp_clks[MSTP010]),
+ CLKDEV_ICK_ID("ssi.3", "rcar_sound", &mstp_clks[MSTP009]),
+ CLKDEV_ICK_ID("ssi.4", "rcar_sound", &mstp_clks[MSTP311]),
+ CLKDEV_ICK_ID("ssi.5", "rcar_sound", &mstp_clks[MSTP310]),
+ CLKDEV_ICK_ID("ssi.6", "rcar_sound", &mstp_clks[MSTP309]),
+ CLKDEV_ICK_ID("ssi.7", "rcar_sound", &mstp_clks[MSTP308]),
+ CLKDEV_ICK_ID("ssi.8", "rcar_sound", &mstp_clks[MSTP307]),
+ CLKDEV_ICK_ID("src.0", "rcar_sound", &mstp_clks[MSTP531]),
+ CLKDEV_ICK_ID("src.1", "rcar_sound", &mstp_clks[MSTP530]),
+ CLKDEV_ICK_ID("src.2", "rcar_sound", &mstp_clks[MSTP529]),
+ CLKDEV_ICK_ID("src.3", "rcar_sound", &mstp_clks[MSTP528]),
+ CLKDEV_ICK_ID("src.4", "rcar_sound", &mstp_clks[MSTP527]),
+ CLKDEV_ICK_ID("src.5", "rcar_sound", &mstp_clks[MSTP526]),
+ CLKDEV_ICK_ID("src.6", "rcar_sound", &mstp_clks[MSTP525]),
+ CLKDEV_ICK_ID("src.7", "rcar_sound", &mstp_clks[MSTP524]),
+ CLKDEV_ICK_ID("src.8", "rcar_sound", &mstp_clks[MSTP523]),
+ CLKDEV_ICK_ID("fck", "sh-tmu.0", &mstp_clks[MSTP016]),
+ CLKDEV_ICK_ID("fck", "ffd80000.timer", &mstp_clks[MSTP016]),
+ CLKDEV_ICK_ID("fck", "sh-tmu.1", &mstp_clks[MSTP015]),
+ CLKDEV_ICK_ID("fck", "ffd81000.timer", &mstp_clks[MSTP015]),
+};
+
+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]);
+
+ if (!ret)
+ ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
+
+ clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+
+ if (!ret)
+ shmobile_clk_init();
+ else
+ panic("failed to setup r8a7778 clocks\n");
+}