clk: prima2: move from arch/arm/mach to drivers/clk

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

1 files changed, 1171 insertions, 0 deletions

diff --git a/drivers/clk/clk-prima2.c b/drivers/clk/clk-prima2.c
new file mode 100644
index 000000000000..517874fa6858
--- /dev/null
+++ b/drivers/clk/clk-prima2.c
@@ -0,0 +1,1171 @@
+/*
+ * Clock tree for CSR SiRFprimaII
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/syscore_ops.h>
+
+#define SIRFSOC_CLKC_CLK_EN0    0x0000
+#define SIRFSOC_CLKC_CLK_EN1    0x0004
+#define SIRFSOC_CLKC_REF_CFG    0x0014
+#define SIRFSOC_CLKC_CPU_CFG    0x0018
+#define SIRFSOC_CLKC_MEM_CFG    0x001c
+#define SIRFSOC_CLKC_SYS_CFG    0x0020
+#define SIRFSOC_CLKC_IO_CFG     0x0024
+#define SIRFSOC_CLKC_DSP_CFG    0x0028
+#define SIRFSOC_CLKC_GFX_CFG    0x002c
+#define SIRFSOC_CLKC_MM_CFG     0x0030
+#define SIRFSOC_CLKC_LCD_CFG     0x0034
+#define SIRFSOC_CLKC_MMC_CFG    0x0038
+#define SIRFSOC_CLKC_PLL1_CFG0  0x0040
+#define SIRFSOC_CLKC_PLL2_CFG0  0x0044
+#define SIRFSOC_CLKC_PLL3_CFG0  0x0048
+#define SIRFSOC_CLKC_PLL1_CFG1  0x004c
+#define SIRFSOC_CLKC_PLL2_CFG1  0x0050
+#define SIRFSOC_CLKC_PLL3_CFG1  0x0054
+#define SIRFSOC_CLKC_PLL1_CFG2  0x0058
+#define SIRFSOC_CLKC_PLL2_CFG2  0x005c
+#define SIRFSOC_CLKC_PLL3_CFG2  0x0060
+#define SIRFSOC_USBPHY_PLL_CTRL 0x0008
+#define SIRFSOC_USBPHY_PLL_POWERDOWN  BIT(1)
+#define SIRFSOC_USBPHY_PLL_BYPASS     BIT(2)
+#define SIRFSOC_USBPHY_PLL_LOCK       BIT(3)
+
+static void *sirfsoc_clk_vbase, *sirfsoc_rsc_vbase;
+
+#define KHZ     1000
+#define MHZ     (KHZ * KHZ)
+
+/*
+ * SiRFprimaII clock controller
+ * - 2 oscillators: osc-26MHz, rtc-32.768KHz
+ * - 3 standard configurable plls: pll1, pll2 & pll3
+ * - 2 exclusive plls: usb phy pll and sata phy pll
+ * - 8 clock domains: cpu/cpudiv, mem/memdiv, sys/io, dsp, graphic, multimedia,
+ *     display and sdphy.
+ *     Each clock domain can select its own clock source from five clock sources,
+ *     X_XIN, X_XINW, PLL1, PLL2 and PLL3. The domain clock is used as the source
+ *     clock of the group clock.
+ *     - dsp domain: gps, mf
+ *     - io domain: dmac, nand, audio, uart, i2c, spi, usp, pwm, pulse
+ *     - sys domain: security
+ */
+
+struct clk_pll {
+	struct clk_hw hw;
+	unsigned short regofs;  /* register offset */
+};
+
+#define to_pllclk(_hw) container_of(_hw, struct clk_pll, hw)
+
+struct clk_dmn {
+	struct clk_hw hw;
+	signed char enable_bit; /* enable bit: 0 ~ 63 */
+	unsigned short regofs;  /* register offset */
+};
+
+#define to_dmnclk(_hw) container_of(_hw, struct clk_dmn, hw)
+
+struct clk_std {
+	struct clk_hw hw;
+	signed char enable_bit; /* enable bit: 0 ~ 63 */
+};
+
+#define to_stdclk(_hw) container_of(_hw, struct clk_std, hw)
+
+static int std_clk_is_enabled(struct clk_hw *hw);
+static int std_clk_enable(struct clk_hw *hw);
+static void std_clk_disable(struct clk_hw *hw);
+
+static inline unsigned long clkc_readl(unsigned reg)
+{
+	return readl(sirfsoc_clk_vbase + reg);
+}
+
+static inline void clkc_writel(u32 val, unsigned reg)
+{
+	writel(val, sirfsoc_clk_vbase + reg);
+}
+
+/*
+ * std pll
+ */
+
+static unsigned long pll_clk_recalc_rate(struct clk_hw *hw,
+	unsigned long parent_rate)
+{
+	unsigned long fin = parent_rate;
+	struct clk_pll *clk = to_pllclk(hw);
+	u32 regcfg2 = clk->regofs + SIRFSOC_CLKC_PLL1_CFG2 -
+		SIRFSOC_CLKC_PLL1_CFG0;
+
+	if (clkc_readl(regcfg2) & BIT(2)) {
+		/* pll bypass mode */
+		return fin;
+	} else {
+		/* fout = fin * nf / nr / od */
+		u32 cfg0 = clkc_readl(clk->regofs);
+		u32 nf = (cfg0 & (BIT(13) - 1)) + 1;
+		u32 nr = ((cfg0 >> 13) & (BIT(6) - 1)) + 1;
+		u32 od = ((cfg0 >> 19) & (BIT(4) - 1)) + 1;
+		WARN_ON(fin % MHZ);
+		return fin / MHZ * nf / nr / od * MHZ;
+	}
+}
+
+static long pll_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+	unsigned long *parent_rate)
+{
+	unsigned long fin, nf, nr, od;
+
+	/*
+	 * fout = fin * nf / (nr * od);
+	 * set od = 1, nr = fin/MHz, so fout = nf * MHz
+	 */
+	rate = rate - rate % MHZ;
+
+	nf = rate / MHZ;
+	if (nf > BIT(13))
+		nf = BIT(13);
+	if (nf < 1)
+		nf = 1;
+
+	fin = *parent_rate;
+
+	nr = fin / MHZ;
+	if (nr > BIT(6))
+		nr = BIT(6);
+	od = 1;
+
+	return fin * nf / (nr * od);
+}
+
+static int pll_clk_set_rate(struct clk_hw *hw, unsigned long rate,
+	unsigned long parent_rate)
+{
+	struct clk_pll *clk = to_pllclk(hw);
+	unsigned long fin, nf, nr, od, reg;
+
+	/*
+	 * fout = fin * nf / (nr * od);
+	 * set od = 1, nr = fin/MHz, so fout = nf * MHz
+	 */
+
+	nf = rate / MHZ;
+	if (unlikely((rate % MHZ) || nf > BIT(13) || nf < 1))
+		return -EINVAL;
+
+	fin = parent_rate;
+	BUG_ON(fin < MHZ);
+
+	nr = fin / MHZ;
+	BUG_ON((fin % MHZ) || nr > BIT(6));
+
+	od = 1;
+
+	reg = (nf - 1) | ((nr - 1) << 13) | ((od - 1) << 19);
+	clkc_writel(reg, clk->regofs);
+
+	reg = clk->regofs + SIRFSOC_CLKC_PLL1_CFG1 - SIRFSOC_CLKC_PLL1_CFG0;
+	clkc_writel((nf >> 1) - 1, reg);
+
+	reg = clk->regofs + SIRFSOC_CLKC_PLL1_CFG2 - SIRFSOC_CLKC_PLL1_CFG0;
+	while (!(clkc_readl(reg) & BIT(6)))
+		cpu_relax();
+
+	return 0;
+}
+
+static struct clk_ops std_pll_ops = {
+	.recalc_rate = pll_clk_recalc_rate,
+	.round_rate = pll_clk_round_rate,
+	.set_rate = pll_clk_set_rate,
+};
+
+static const char *pll_clk_parents[] = {
+	"osc",
+};
+
+static struct clk_init_data clk_pll1_init = {
+	.name = "pll1",
+	.ops = &std_pll_ops,
+	.parent_names = pll_clk_parents,
+	.num_parents = ARRAY_SIZE(pll_clk_parents),
+};
+
+static struct clk_init_data clk_pll2_init = {
+	.name = "pll2",
+	.ops = &std_pll_ops,
+	.parent_names = pll_clk_parents,
+	.num_parents = ARRAY_SIZE(pll_clk_parents),
+};
+
+static struct clk_init_data clk_pll3_init = {
+	.name = "pll3",
+	.ops = &std_pll_ops,
+	.parent_names = pll_clk_parents,
+	.num_parents = ARRAY_SIZE(pll_clk_parents),
+};
+
+static struct clk_pll clk_pll1 = {
+	.regofs = SIRFSOC_CLKC_PLL1_CFG0,
+	.hw = {
+		.init = &clk_pll1_init,
+	},
+};
+
+static struct clk_pll clk_pll2 = {
+	.regofs = SIRFSOC_CLKC_PLL2_CFG0,
+	.hw = {
+		.init = &clk_pll2_init,
+	},
+};
+
+static struct clk_pll clk_pll3 = {
+	.regofs = SIRFSOC_CLKC_PLL3_CFG0,
+	.hw = {
+		.init = &clk_pll3_init,
+	},
+};
+
+/*
+ * usb uses specified pll
+ */
+
+static int usb_pll_clk_enable(struct clk_hw *hw)
+{
+	u32 reg = readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
+	reg &= ~(SIRFSOC_USBPHY_PLL_POWERDOWN | SIRFSOC_USBPHY_PLL_BYPASS);
+	writel(reg, sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
+	while (!(readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL) &
+			SIRFSOC_USBPHY_PLL_LOCK))
+		cpu_relax();
+
+	return 0;
+}
+
+static void usb_pll_clk_disable(struct clk_hw *clk)
+{
+	u32 reg = readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
+	reg |= (SIRFSOC_USBPHY_PLL_POWERDOWN | SIRFSOC_USBPHY_PLL_BYPASS);
+	writel(reg, sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
+}
+
+static unsigned long usb_pll_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+	u32 reg = readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
+	return (reg & SIRFSOC_USBPHY_PLL_BYPASS) ? parent_rate : 48*MHZ;
+}
+
+static struct clk_ops usb_pll_ops = {
+	.enable = usb_pll_clk_enable,
+	.disable = usb_pll_clk_disable,
+	.recalc_rate = usb_pll_clk_recalc_rate,
+};
+
+static struct clk_init_data clk_usb_pll_init = {
+	.name = "usb_pll",
+	.ops = &usb_pll_ops,
+	.parent_names = pll_clk_parents,
+	.num_parents = ARRAY_SIZE(pll_clk_parents),
+};
+
+static struct clk_hw usb_pll_clk_hw = {
+	.init = &clk_usb_pll_init,
+};
+
+/*
+ * clock domains - cpu, mem, sys/io, dsp, gfx
+ */
+
+static const char *dmn_clk_parents[] = {
+	"rtc",
+	"osc",
+	"pll1",
+	"pll2",
+	"pll3",
+};
+
+static u8 dmn_clk_get_parent(struct clk_hw *hw)
+{
+	struct clk_dmn *clk = to_dmnclk(hw);
+	u32 cfg = clkc_readl(clk->regofs);
+
+	/* parent of io domain can only be pll3 */
+	if (strcmp(hw->init->name, "io") == 0)
+		return 4;
+
+	WARN_ON((cfg & (BIT(3) - 1)) > 4);
+
+	return cfg & (BIT(3) - 1);
+}
+
+static int dmn_clk_set_parent(struct clk_hw *hw, u8 parent)
+{
+	struct clk_dmn *clk = to_dmnclk(hw);
+	u32 cfg = clkc_readl(clk->regofs);
+
+	/* parent of io domain can only be pll3 */
+	if (strcmp(hw->init->name, "io") == 0)
+		return -EINVAL;
+
+	cfg &= ~(BIT(3) - 1);
+	clkc_writel(cfg | parent, clk->regofs);
+	/* BIT(3) - switching status: 1 - busy, 0 - done */
+	while (clkc_readl(clk->regofs) & BIT(3))
+		cpu_relax();
+
+	return 0;
+}
+
+static unsigned long dmn_clk_recalc_rate(struct clk_hw *hw,
+	unsigned long parent_rate)
+
+{
+	unsigned long fin = parent_rate;
+	struct clk_dmn *clk = to_dmnclk(hw);
+
+	u32 cfg = clkc_readl(clk->regofs);
+
+	if (cfg & BIT(24)) {
+		/* fcd bypass mode */
+		return fin;
+	} else {
+		/*
+		 * wait count: bit[19:16], hold count: bit[23:20]
+		 */
+		u32 wait = (cfg >> 16) & (BIT(4) - 1);
+		u32 hold = (cfg >> 20) & (BIT(4) - 1);
+
+		return fin / (wait + hold + 2);
+	}
+}
+
+static long dmn_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+	unsigned long *parent_rate)
+{
+	unsigned long fin;
+	unsigned ratio, wait, hold;
+	unsigned bits = (strcmp(hw->init->name, "mem") == 0) ? 3 : 4;
+
+	fin = *parent_rate;
+	ratio = fin / rate;
+
+	if (ratio < 2)
+		ratio = 2;
+	if (ratio > BIT(bits + 1))
+		ratio = BIT(bits + 1);
+
+	wait = (ratio >> 1) - 1;
+	hold = ratio - wait - 2;
+
+	return fin / (wait + hold + 2);
+}
+
+static int dmn_clk_set_rate(struct clk_hw *hw, unsigned long rate,
+	unsigned long parent_rate)
+{
+	struct clk_dmn *clk = to_dmnclk(hw);
+	unsigned long fin;
+	unsigned ratio, wait, hold, reg;
+	unsigned bits = (strcmp(hw->init->name, "mem") == 0) ? 3 : 4;
+
+	fin = parent_rate;
+	ratio = fin / rate;
+
+	if (unlikely(ratio < 2 || ratio > BIT(bits + 1)))
+		return -EINVAL;
+
+	WARN_ON(fin % rate);
+
+	wait = (ratio >> 1) - 1;
+	hold = ratio - wait - 2;
+
+	reg = clkc_readl(clk->regofs);
+	reg &= ~(((BIT(bits) - 1) << 16) | ((BIT(bits) - 1) << 20));
+	reg |= (wait << 16) | (hold << 20) | BIT(25);
+	clkc_writel(reg, clk->regofs);
+
+	/* waiting FCD been effective */
+	while (clkc_readl(clk->regofs) & BIT(25))
+		cpu_relax();
+
+	return 0;
+}
+
+static struct clk_ops msi_ops = {
+	.set_rate = dmn_clk_set_rate,
+	.round_rate = dmn_clk_round_rate,
+	.recalc_rate = dmn_clk_recalc_rate,
+	.set_parent = dmn_clk_set_parent,
+	.get_parent = dmn_clk_get_parent,
+};
+
+static struct clk_init_data clk_mem_init = {
+	.name = "mem",
+	.ops = &msi_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
+
+static struct clk_dmn clk_mem = {
+	.regofs = SIRFSOC_CLKC_MEM_CFG,
+	.hw = {
+		.init = &clk_mem_init,
+	},
+};
+
+static struct clk_init_data clk_sys_init = {
+	.name = "sys",
+	.ops = &msi_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+	.flags = CLK_SET_RATE_GATE,
+};
+
+static struct clk_dmn clk_sys = {
+	.regofs = SIRFSOC_CLKC_SYS_CFG,
+	.hw = {
+		.init = &clk_sys_init,
+	},
+};
+
+static struct clk_init_data clk_io_init = {
+	.name = "io",
+	.ops = &msi_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
+
+static struct clk_dmn clk_io = {
+	.regofs = SIRFSOC_CLKC_IO_CFG,
+	.hw = {
+		.init = &clk_io_init,
+	},
+};
+
+static struct clk_ops cpu_ops = {
+	.set_parent = dmn_clk_set_parent,
+	.get_parent = dmn_clk_get_parent,
+};
+
+static struct clk_init_data clk_cpu_init = {
+	.name = "cpu",
+	.ops = &cpu_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+	.flags = CLK_SET_RATE_PARENT,
+};
+
+static struct clk_dmn clk_cpu = {
+	.regofs = SIRFSOC_CLKC_CPU_CFG,
+	.hw = {
+		.init = &clk_cpu_init,
+	},
+};
+
+static struct clk_ops dmn_ops = {
+	.is_enabled = std_clk_is_enabled,
+	.enable = std_clk_enable,
+	.disable = std_clk_disable,
+	.set_rate = dmn_clk_set_rate,
+	.round_rate = dmn_clk_round_rate,
+	.recalc_rate = dmn_clk_recalc_rate,
+	.set_parent = dmn_clk_set_parent,
+	.get_parent = dmn_clk_get_parent,
+};
+
+/* dsp, gfx, mm, lcd and vpp domain */
+
+static struct clk_init_data clk_dsp_init = {
+	.name = "dsp",
+	.ops = &dmn_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
+
+static struct clk_dmn clk_dsp = {
+	.regofs = SIRFSOC_CLKC_DSP_CFG,
+	.enable_bit = 0,
+	.hw = {
+		.init = &clk_dsp_init,
+	},
+};
+
+static struct clk_init_data clk_gfx_init = {
+	.name = "gfx",
+	.ops = &dmn_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
+
+static struct clk_dmn clk_gfx = {
+	.regofs = SIRFSOC_CLKC_GFX_CFG,
+	.enable_bit = 8,
+	.hw = {
+		.init = &clk_gfx_init,
+	},
+};
+
+static struct clk_init_data clk_mm_init = {
+	.name = "mm",
+	.ops = &dmn_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
+
+static struct clk_dmn clk_mm = {
+	.regofs = SIRFSOC_CLKC_MM_CFG,
+	.enable_bit = 9,
+	.hw = {
+		.init = &clk_mm_init,
+	},
+};
+
+static struct clk_init_data clk_lcd_init = {
+	.name = "lcd",
+	.ops = &dmn_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
+
+static struct clk_dmn clk_lcd = {
+	.regofs = SIRFSOC_CLKC_LCD_CFG,
+	.enable_bit = 10,
+	.hw = {
+		.init = &clk_lcd_init,
+	},
+};
+
+static struct clk_init_data clk_vpp_init = {
+	.name = "vpp",
+	.ops = &dmn_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
+
+static struct clk_dmn clk_vpp = {
+	.regofs = SIRFSOC_CLKC_LCD_CFG,
+	.enable_bit = 11,
+	.hw = {
+		.init = &clk_vpp_init,
+	},
+};
+
+static struct clk_init_data clk_mmc01_init = {
+	.name = "mmc01",
+	.ops = &dmn_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
+
+static struct clk_dmn clk_mmc01 = {
+	.regofs = SIRFSOC_CLKC_MMC_CFG,
+	.enable_bit = 59,
+	.hw = {
+		.init = &clk_mmc01_init,
+	},
+};
+
+static struct clk_init_data clk_mmc23_init = {
+	.name = "mmc23",
+	.ops = &dmn_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
+
+static struct clk_dmn clk_mmc23 = {
+	.regofs = SIRFSOC_CLKC_MMC_CFG,
+	.enable_bit = 60,
+	.hw = {
+		.init = &clk_mmc23_init,
+	},
+};
+
+static struct clk_init_data clk_mmc45_init = {
+	.name = "mmc45",
+	.ops = &dmn_ops,
+	.parent_names = dmn_clk_parents,
+	.num_parents = ARRAY_SIZE(dmn_clk_parents),
+};
+
+static struct clk_dmn clk_mmc45 = {
+	.regofs = SIRFSOC_CLKC_MMC_CFG,
+	.enable_bit = 61,
+	.hw = {
+		.init = &clk_mmc45_init,
+	},
+};
+
+/*
+ * peripheral controllers in io domain
+ */
+
+static int std_clk_is_enabled(struct clk_hw *hw)
+{
+	u32 reg;
+	int bit;
+	struct clk_std *clk = to_stdclk(hw);
+
+	bit = clk->enable_bit % 32;
+	reg = clk->enable_bit / 32;
+	reg = SIRFSOC_CLKC_CLK_EN0 + reg * sizeof(reg);
+
+	return !!(clkc_readl(reg) & BIT(bit));
+}
+
+static int std_clk_enable(struct clk_hw *hw)
+{
+	u32 val, reg;
+	int bit;
+	struct clk_std *clk = to_stdclk(hw);
+
+	BUG_ON(clk->enable_bit < 0 || clk->enable_bit > 63);
+
+	bit = clk->enable_bit % 32;
+	reg = clk->enable_bit / 32;
+	reg = SIRFSOC_CLKC_CLK_EN0 + reg * sizeof(reg);
+
+	val = clkc_readl(reg) | BIT(bit);
+	clkc_writel(val, reg);
+	return 0;
+}
+
+static void std_clk_disable(struct clk_hw *hw)
+{
+	u32 val, reg;
+	int bit;
+	struct clk_std *clk = to_stdclk(hw);
+
+	BUG_ON(clk->enable_bit < 0 || clk->enable_bit > 63);
+
+	bit = clk->enable_bit % 32;
+	reg = clk->enable_bit / 32;
+	reg = SIRFSOC_CLKC_CLK_EN0 + reg * sizeof(reg);
+
+	val = clkc_readl(reg) & ~BIT(bit);
+	clkc_writel(val, reg);
+}
+
+static const char *std_clk_io_parents[] = {
+	"io",
+};
+
+static struct clk_ops ios_ops = {
+	.is_enabled = std_clk_is_enabled,
+	.enable = std_clk_enable,
+	.disable = std_clk_disable,
+};
+
+static struct clk_init_data clk_dmac0_init = {
+	.name = "dmac0",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_dmac0 = {
+	.enable_bit = 32,
+	.hw = {
+		.init = &clk_dmac0_init,
+	},
+};
+
+static struct clk_init_data clk_dmac1_init = {
+	.name = "dmac1",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_dmac1 = {
+	.enable_bit = 33,
+	.hw = {
+		.init = &clk_dmac1_init,
+	},
+};
+
+static struct clk_init_data clk_nand_init = {
+	.name = "nand",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_nand = {
+	.enable_bit = 34,
+	.hw = {
+		.init = &clk_nand_init,
+	},
+};
+
+static struct clk_init_data clk_audio_init = {
+	.name = "audio",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_audio = {
+	.enable_bit = 35,
+	.hw = {
+		.init = &clk_audio_init,
+	},
+};
+
+static struct clk_init_data clk_uart0_init = {
+	.name = "uart0",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_uart0 = {
+	.enable_bit = 36,
+	.hw = {
+		.init = &clk_uart0_init,
+	},
+};
+
+static struct clk_init_data clk_uart1_init = {
+	.name = "uart1",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_uart1 = {
+	.enable_bit = 37,
+	.hw = {
+		.init = &clk_uart1_init,
+	},
+};
+
+static struct clk_init_data clk_uart2_init = {
+	.name = "uart2",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_uart2 = {
+	.enable_bit = 38,
+	.hw = {
+		.init = &clk_uart2_init,
+	},
+};
+
+static struct clk_init_data clk_usp0_init = {
+	.name = "usp0",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_usp0 = {
+	.enable_bit = 39,
+	.hw = {
+		.init = &clk_usp0_init,
+	},
+};
+
+static struct clk_init_data clk_usp1_init = {
+	.name = "usp1",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_usp1 = {
+	.enable_bit = 40,
+	.hw = {
+		.init = &clk_usp1_init,
+	},
+};
+
+static struct clk_init_data clk_usp2_init = {
+	.name = "usp2",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_usp2 = {
+	.enable_bit = 41,
+	.hw = {
+		.init = &clk_usp2_init,
+	},
+};
+
+static struct clk_init_data clk_vip_init = {
+	.name = "vip",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_vip = {
+	.enable_bit = 42,
+	.hw = {
+		.init = &clk_vip_init,
+	},
+};
+
+static struct clk_init_data clk_spi0_init = {
+	.name = "spi0",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_spi0 = {
+	.enable_bit = 43,
+	.hw = {
+		.init = &clk_spi0_init,
+	},
+};
+
+static struct clk_init_data clk_spi1_init = {
+	.name = "spi1",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_spi1 = {
+	.enable_bit = 44,
+	.hw = {
+		.init = &clk_spi1_init,
+	},
+};
+
+static struct clk_init_data clk_tsc_init = {
+	.name = "tsc",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_tsc = {
+	.enable_bit = 45,
+	.hw = {
+		.init = &clk_tsc_init,
+	},
+};
+
+static struct clk_init_data clk_i2c0_init = {
+	.name = "i2c0",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_i2c0 = {
+	.enable_bit = 46,
+	.hw = {
+		.init = &clk_i2c0_init,
+	},
+};
+
+static struct clk_init_data clk_i2c1_init = {
+	.name = "i2c1",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_i2c1 = {
+	.enable_bit = 47,
+	.hw = {
+		.init = &clk_i2c1_init,
+	},
+};
+
+static struct clk_init_data clk_pwmc_init = {
+	.name = "pwmc",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_pwmc = {
+	.enable_bit = 48,
+	.hw = {
+		.init = &clk_pwmc_init,
+	},
+};
+
+static struct clk_init_data clk_efuse_init = {
+	.name = "efuse",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_efuse = {
+	.enable_bit = 49,
+	.hw = {
+		.init = &clk_efuse_init,
+	},
+};
+
+static struct clk_init_data clk_pulse_init = {
+	.name = "pulse",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_pulse = {
+	.enable_bit = 50,
+	.hw = {
+		.init = &clk_pulse_init,
+	},
+};
+
+static const char *std_clk_dsp_parents[] = {
+	"dsp",
+};
+
+static struct clk_init_data clk_gps_init = {
+	.name = "gps",
+	.ops = &ios_ops,
+	.parent_names = std_clk_dsp_parents,
+	.num_parents = ARRAY_SIZE(std_clk_dsp_parents),
+};
+
+static struct clk_std clk_gps = {
+	.enable_bit = 1,
+	.hw = {
+		.init = &clk_gps_init,
+	},
+};
+
+static struct clk_init_data clk_mf_init = {
+	.name = "mf",
+	.ops = &ios_ops,
+	.parent_names = std_clk_io_parents,
+	.num_parents = ARRAY_SIZE(std_clk_io_parents),
+};
+
+static struct clk_std clk_mf = {
+	.enable_bit = 2,
+	.hw = {
+		.init = &clk_mf_init,
+	},
+};
+
+static const char *std_clk_sys_parents[] = {
+	"sys",
+};
+
+static struct clk_init_data clk_security_init = {
+	.name = "mf",
+	.ops = &ios_ops,
+	.parent_names = std_clk_sys_parents,
+	.num_parents = ARRAY_SIZE(std_clk_sys_parents),
+};
+
+static struct clk_std clk_security = {
+	.enable_bit = 19,
+	.hw = {
+		.init = &clk_security_init,
+	},
+};
+
+static const char *std_clk_usb_parents[] = {
+	"usb_pll",
+};
+
+static struct clk_init_data clk_usb0_init = {
+	.name = "usb0",
+	.ops = &ios_ops,
+	.parent_names = std_clk_usb_parents,
+	.num_parents = ARRAY_SIZE(std_clk_usb_parents),
+};
+
+static struct clk_std clk_usb0 = {
+	.enable_bit = 16,
+	.hw = {
+		.init = &clk_usb0_init,
+	},
+};
+
+static struct clk_init_data clk_usb1_init = {
+	.name = "usb1",
+	.ops = &ios_ops,
+	.parent_names = std_clk_usb_parents,
+	.num_parents = ARRAY_SIZE(std_clk_usb_parents),
+};
+
+static struct clk_std clk_usb1 = {
+	.enable_bit = 17,
+	.hw = {
+		.init = &clk_usb1_init,
+	},
+};
+
+static struct of_device_id clkc_ids[] = {
+	{ .compatible = "sirf,prima2-clkc" },
+	{},
+};
+
+static struct of_device_id rsc_ids[] = {
+	{ .compatible = "sirf,prima2-rsc" },
+	{},
+};
+
+void __init sirfsoc_of_clk_init(void)
+{
+	struct clk *clk;
+	struct device_node *np;
+
+	np = of_find_matching_node(NULL, clkc_ids);
+	if (!np)
+		panic("unable to find compatible clkc node in dtb\n");
+
+	sirfsoc_clk_vbase = of_iomap(np, 0);
+	if (!sirfsoc_clk_vbase)
+		panic("unable to map clkc registers\n");
+
+	of_node_put(np);
+
+	np = of_find_matching_node(NULL, rsc_ids);
+	if (!np)
+		panic("unable to find compatible rsc node in dtb\n");
+
+	sirfsoc_rsc_vbase = of_iomap(np, 0);
+	if (!sirfsoc_rsc_vbase)
+		panic("unable to map rsc registers\n");
+
+	of_node_put(np);
+
+
+	/* These are always available (RTC and 26MHz OSC)*/
+	clk = clk_register_fixed_rate(NULL, "rtc", NULL,
+		CLK_IS_ROOT, 32768);
+	BUG_ON(!clk);
+	clk = clk_register_fixed_rate(NULL, "osc", NULL,
+		CLK_IS_ROOT, 26000000);
+	BUG_ON(!clk);
+
+	clk = clk_register(NULL, &clk_pll1.hw);
+	BUG_ON(!clk);
+	clk = clk_register(NULL, &clk_pll2.hw);
+	BUG_ON(!clk);
+	clk = clk_register(NULL, &clk_pll3.hw);
+	BUG_ON(!clk);
+	clk = clk_register(NULL, &clk_mem.hw);
+	BUG_ON(!clk);
+	clk = clk_register(NULL, &clk_sys.hw);
+	BUG_ON(!clk);
+	clk = clk_register(NULL, &clk_security.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b8030000.security");
+	clk = clk_register(NULL, &clk_dsp.hw);
+	BUG_ON(!clk);
+	clk = clk_register(NULL, &clk_gps.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "a8010000.gps");
+	clk = clk_register(NULL, &clk_mf.hw);
+	BUG_ON(!clk);
+	clk = clk_register(NULL, &clk_io.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "io");
+	clk = clk_register(NULL, &clk_cpu.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "cpu");
+	clk = clk_register(NULL, &clk_uart0.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0050000.uart");
+	clk = clk_register(NULL, &clk_uart1.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0060000.uart");
+	clk = clk_register(NULL, &clk_uart2.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0070000.uart");
+	clk = clk_register(NULL, &clk_tsc.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0110000.tsc");
+	clk = clk_register(NULL, &clk_i2c0.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b00e0000.i2c");
+	clk = clk_register(NULL, &clk_i2c1.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b00f0000.i2c");
+	clk = clk_register(NULL, &clk_spi0.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b00d0000.spi");
+	clk = clk_register(NULL, &clk_spi1.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0170000.spi");
+	clk = clk_register(NULL, &clk_pwmc.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0130000.pwm");
+	clk = clk_register(NULL, &clk_efuse.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0140000.efusesys");
+	clk = clk_register(NULL, &clk_pulse.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0150000.pulsec");
+	clk = clk_register(NULL, &clk_dmac0.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b00b0000.dma-controller");
+	clk = clk_register(NULL, &clk_dmac1.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0160000.dma-controller");
+	clk = clk_register(NULL, &clk_nand.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0030000.nand");
+	clk = clk_register(NULL, &clk_audio.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0040000.audio");
+	clk = clk_register(NULL, &clk_usp0.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0080000.usp");
+	clk = clk_register(NULL, &clk_usp1.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b0090000.usp");
+	clk = clk_register(NULL, &clk_usp2.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b00a0000.usp");
+	clk = clk_register(NULL, &clk_vip.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b00c0000.vip");
+	clk = clk_register(NULL, &clk_gfx.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "98000000.graphics");
+	clk = clk_register(NULL, &clk_mm.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "a0000000.multimedia");
+	clk = clk_register(NULL, &clk_lcd.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "90010000.display");
+	clk = clk_register(NULL, &clk_vpp.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "90020000.vpp");
+	clk = clk_register(NULL, &clk_mmc01.hw);
+	BUG_ON(!clk);
+	clk = clk_register(NULL, &clk_mmc23.hw);
+	BUG_ON(!clk);
+	clk = clk_register(NULL, &clk_mmc45.hw);
+	BUG_ON(!clk);
+	clk = clk_register(NULL, &usb_pll_clk_hw);
+	BUG_ON(!clk);
+	clk = clk_register(NULL, &clk_usb0.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b00e0000.usb");
+	clk = clk_register(NULL, &clk_usb1.hw);
+	BUG_ON(!clk);
+	clk_register_clkdev(clk, NULL, "b00f0000.usb");
+}