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OpenCloudOS-Kernel/drivers/clk/clk-prima2.c

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/*
* 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" },
{},
};
enum prima2_clk_index {
/* 0 1 2 3 4 5 6 7 8 9 */
rtc, osc, pll1, pll2, pll3, mem, sys, security, dsp, gps,
mf, io, cpu, uart0, uart1, uart2, tsc, i2c0, i2c1, spi0,
spi1, pwmc, efuse, pulse, dmac0, dmac1, nand, audio, usp0, usp1,
usp2, vip, gfx, mm, lcd, vpp, mmc01, mmc23, mmc45, usbpll,
usb0, usb1, maxclk,
};
static __initdata struct clk_hw* prima2_clk_hw_array[maxclk] = {
NULL, /* dummy */
NULL,
&clk_pll1.hw,
&clk_pll2.hw,
&clk_pll3.hw,
&clk_mem.hw,
&clk_sys.hw,
&clk_security.hw,
&clk_dsp.hw,
&clk_gps.hw,
&clk_mf.hw,
&clk_io.hw,
&clk_cpu.hw,
&clk_uart0.hw,
&clk_uart1.hw,
&clk_uart2.hw,
&clk_tsc.hw,
&clk_i2c0.hw,
&clk_i2c1.hw,
&clk_spi0.hw,
&clk_spi1.hw,
&clk_pwmc.hw,
&clk_efuse.hw,
&clk_pulse.hw,
&clk_dmac0.hw,
&clk_dmac1.hw,
&clk_nand.hw,
&clk_audio.hw,
&clk_usp0.hw,
&clk_usp1.hw,
&clk_usp2.hw,
&clk_vip.hw,
&clk_gfx.hw,
&clk_mm.hw,
&clk_lcd.hw,
&clk_vpp.hw,
&clk_mmc01.hw,
&clk_mmc23.hw,
&clk_mmc45.hw,
&usb_pll_clk_hw,
&clk_usb0.hw,
&clk_usb1.hw,
};
static struct clk *prima2_clks[maxclk];
static struct clk_onecell_data clk_data;
void __init sirfsoc_of_clk_init(void)
{
struct device_node *np;
int i;
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);
np = of_find_matching_node(NULL, clkc_ids);
if (!np)
return;
sirfsoc_clk_vbase = of_iomap(np, 0);
if (!sirfsoc_clk_vbase)
panic("unable to map clkc registers\n");
/* These are always available (RTC and 26MHz OSC)*/
prima2_clks[rtc] = clk_register_fixed_rate(NULL, "rtc", NULL,
CLK_IS_ROOT, 32768);
prima2_clks[osc]= clk_register_fixed_rate(NULL, "osc", NULL,
CLK_IS_ROOT, 26000000);
for (i = pll1; i < maxclk; i++) {
prima2_clks[i] = clk_register(NULL, prima2_clk_hw_array[i]);
BUG_ON(IS_ERR(prima2_clks[i]));
}
clk_register_clkdev(prima2_clks[cpu], NULL, "cpu");
clk_register_clkdev(prima2_clks[io], NULL, "io");
clk_register_clkdev(prima2_clks[mem], NULL, "mem");
clk_data.clks = prima2_clks;
clk_data.clk_num = maxclk;
of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
}
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