| /* |
| * pxa168 clock framework source file |
| * |
| * Copyright (C) 2012 Marvell |
| * Chao Xie <xiechao.mail@gmail.com> |
| * |
| * This file is licensed under the terms of the GNU General Public |
| * License version 2. This program is licensed "as is" without any |
| * warranty of any kind, whether express or implied. |
| */ |
| |
| #include <linux/clk.h> |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/spinlock.h> |
| #include <linux/io.h> |
| #include <linux/delay.h> |
| #include <linux/err.h> |
| |
| #include "clk.h" |
| |
| #define APBC_RTC 0x28 |
| #define APBC_TWSI0 0x2c |
| #define APBC_KPC 0x30 |
| #define APBC_UART0 0x0 |
| #define APBC_UART1 0x4 |
| #define APBC_GPIO 0x8 |
| #define APBC_PWM0 0xc |
| #define APBC_PWM1 0x10 |
| #define APBC_PWM2 0x14 |
| #define APBC_PWM3 0x18 |
| #define APBC_SSP0 0x81c |
| #define APBC_SSP1 0x820 |
| #define APBC_SSP2 0x84c |
| #define APBC_SSP3 0x858 |
| #define APBC_SSP4 0x85c |
| #define APBC_TWSI1 0x6c |
| #define APBC_UART2 0x70 |
| #define APMU_SDH0 0x54 |
| #define APMU_SDH1 0x58 |
| #define APMU_USB 0x5c |
| #define APMU_DISP0 0x4c |
| #define APMU_CCIC0 0x50 |
| #define APMU_DFC 0x60 |
| #define MPMU_UART_PLL 0x14 |
| |
| static DEFINE_SPINLOCK(clk_lock); |
| |
| static struct mmp_clk_factor_masks uart_factor_masks = { |
| .factor = 2, |
| .num_mask = 0x1fff, |
| .den_mask = 0x1fff, |
| .num_shift = 16, |
| .den_shift = 0, |
| }; |
| |
| static struct mmp_clk_factor_tbl uart_factor_tbl[] = { |
| {.num = 8125, .den = 1536}, /*14.745MHZ */ |
| }; |
| |
| static const char *uart_parent[] = {"pll1_3_16", "uart_pll"}; |
| static const char *ssp_parent[] = {"pll1_96", "pll1_48", "pll1_24", "pll1_12"}; |
| static const char *sdh_parent[] = {"pll1_12", "pll1_13"}; |
| static const char *disp_parent[] = {"pll1_2", "pll1_12"}; |
| static const char *ccic_parent[] = {"pll1_2", "pll1_12"}; |
| static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"}; |
| |
| void __init pxa168_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys, |
| phys_addr_t apbc_phys) |
| { |
| struct clk *clk; |
| struct clk *uart_pll; |
| void __iomem *mpmu_base; |
| void __iomem *apmu_base; |
| void __iomem *apbc_base; |
| |
| mpmu_base = ioremap(mpmu_phys, SZ_4K); |
| if (mpmu_base == NULL) { |
| pr_err("error to ioremap MPMU base\n"); |
| return; |
| } |
| |
| apmu_base = ioremap(apmu_phys, SZ_4K); |
| if (apmu_base == NULL) { |
| pr_err("error to ioremap APMU base\n"); |
| return; |
| } |
| |
| apbc_base = ioremap(apbc_phys, SZ_4K); |
| if (apbc_base == NULL) { |
| pr_err("error to ioremap APBC base\n"); |
| return; |
| } |
| |
| clk = clk_register_fixed_rate(NULL, "clk32", NULL, CLK_IS_ROOT, 3200); |
| clk_register_clkdev(clk, "clk32", NULL); |
| |
| clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, CLK_IS_ROOT, |
| 26000000); |
| clk_register_clkdev(clk, "vctcxo", NULL); |
| |
| clk = clk_register_fixed_rate(NULL, "pll1", NULL, CLK_IS_ROOT, |
| 624000000); |
| clk_register_clkdev(clk, "pll1", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1", |
| CLK_SET_RATE_PARENT, 1, 2); |
| clk_register_clkdev(clk, "pll1_2", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_4", "pll1_2", |
| CLK_SET_RATE_PARENT, 1, 2); |
| clk_register_clkdev(clk, "pll1_4", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_8", "pll1_4", |
| CLK_SET_RATE_PARENT, 1, 2); |
| clk_register_clkdev(clk, "pll1_8", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_16", "pll1_8", |
| CLK_SET_RATE_PARENT, 1, 2); |
| clk_register_clkdev(clk, "pll1_16", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_6", "pll1_2", |
| CLK_SET_RATE_PARENT, 1, 3); |
| clk_register_clkdev(clk, "pll1_6", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_12", "pll1_6", |
| CLK_SET_RATE_PARENT, 1, 2); |
| clk_register_clkdev(clk, "pll1_12", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_24", "pll1_12", |
| CLK_SET_RATE_PARENT, 1, 2); |
| clk_register_clkdev(clk, "pll1_24", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_48", "pll1_24", |
| CLK_SET_RATE_PARENT, 1, 2); |
| clk_register_clkdev(clk, "pll1_48", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_96", "pll1_48", |
| CLK_SET_RATE_PARENT, 1, 2); |
| clk_register_clkdev(clk, "pll1_96", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_13", "pll1", |
| CLK_SET_RATE_PARENT, 1, 13); |
| clk_register_clkdev(clk, "pll1_13", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_13_1_5", "pll1", |
| CLK_SET_RATE_PARENT, 2, 3); |
| clk_register_clkdev(clk, "pll1_13_1_5", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_2_1_5", "pll1", |
| CLK_SET_RATE_PARENT, 2, 3); |
| clk_register_clkdev(clk, "pll1_2_1_5", NULL); |
| |
| clk = clk_register_fixed_factor(NULL, "pll1_3_16", "pll1", |
| CLK_SET_RATE_PARENT, 3, 16); |
| clk_register_clkdev(clk, "pll1_3_16", NULL); |
| |
| uart_pll = mmp_clk_register_factor("uart_pll", "pll1_4", 0, |
| mpmu_base + MPMU_UART_PLL, |
| &uart_factor_masks, uart_factor_tbl, |
| ARRAY_SIZE(uart_factor_tbl), &clk_lock); |
| clk_set_rate(uart_pll, 14745600); |
| clk_register_clkdev(uart_pll, "uart_pll", NULL); |
| |
| clk = mmp_clk_register_apbc("twsi0", "pll1_13_1_5", |
| apbc_base + APBC_TWSI0, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "pxa2xx-i2c.0"); |
| |
| clk = mmp_clk_register_apbc("twsi1", "pll1_13_1_5", |
| apbc_base + APBC_TWSI1, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "pxa2xx-i2c.1"); |
| |
| clk = mmp_clk_register_apbc("gpio", "vctcxo", |
| apbc_base + APBC_GPIO, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "mmp-gpio"); |
| |
| clk = mmp_clk_register_apbc("kpc", "clk32", |
| apbc_base + APBC_KPC, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "pxa27x-keypad"); |
| |
| clk = mmp_clk_register_apbc("rtc", "clk32", |
| apbc_base + APBC_RTC, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "sa1100-rtc"); |
| |
| clk = mmp_clk_register_apbc("pwm0", "pll1_48", |
| apbc_base + APBC_PWM0, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "pxa168-pwm.0"); |
| |
| clk = mmp_clk_register_apbc("pwm1", "pll1_48", |
| apbc_base + APBC_PWM1, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "pxa168-pwm.1"); |
| |
| clk = mmp_clk_register_apbc("pwm2", "pll1_48", |
| apbc_base + APBC_PWM2, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "pxa168-pwm.2"); |
| |
| clk = mmp_clk_register_apbc("pwm3", "pll1_48", |
| apbc_base + APBC_PWM3, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "pxa168-pwm.3"); |
| |
| clk = clk_register_mux(NULL, "uart0_mux", uart_parent, |
| ARRAY_SIZE(uart_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apbc_base + APBC_UART0, 4, 3, 0, &clk_lock); |
| clk_set_parent(clk, uart_pll); |
| clk_register_clkdev(clk, "uart_mux.0", NULL); |
| |
| clk = mmp_clk_register_apbc("uart0", "uart0_mux", |
| apbc_base + APBC_UART0, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "pxa2xx-uart.0"); |
| |
| clk = clk_register_mux(NULL, "uart1_mux", uart_parent, |
| ARRAY_SIZE(uart_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apbc_base + APBC_UART1, 4, 3, 0, &clk_lock); |
| clk_set_parent(clk, uart_pll); |
| clk_register_clkdev(clk, "uart_mux.1", NULL); |
| |
| clk = mmp_clk_register_apbc("uart1", "uart1_mux", |
| apbc_base + APBC_UART1, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "pxa2xx-uart.1"); |
| |
| clk = clk_register_mux(NULL, "uart2_mux", uart_parent, |
| ARRAY_SIZE(uart_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apbc_base + APBC_UART2, 4, 3, 0, &clk_lock); |
| clk_set_parent(clk, uart_pll); |
| clk_register_clkdev(clk, "uart_mux.2", NULL); |
| |
| clk = mmp_clk_register_apbc("uart2", "uart2_mux", |
| apbc_base + APBC_UART2, 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "pxa2xx-uart.2"); |
| |
| clk = clk_register_mux(NULL, "ssp0_mux", ssp_parent, |
| ARRAY_SIZE(ssp_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock); |
| clk_register_clkdev(clk, "uart_mux.0", NULL); |
| |
| clk = mmp_clk_register_apbc("ssp0", "ssp0_mux", apbc_base + APBC_SSP0, |
| 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "mmp-ssp.0"); |
| |
| clk = clk_register_mux(NULL, "ssp1_mux", ssp_parent, |
| ARRAY_SIZE(ssp_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apbc_base + APBC_SSP1, 4, 3, 0, &clk_lock); |
| clk_register_clkdev(clk, "ssp_mux.1", NULL); |
| |
| clk = mmp_clk_register_apbc("ssp1", "ssp1_mux", apbc_base + APBC_SSP1, |
| 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "mmp-ssp.1"); |
| |
| clk = clk_register_mux(NULL, "ssp2_mux", ssp_parent, |
| ARRAY_SIZE(ssp_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apbc_base + APBC_SSP2, 4, 3, 0, &clk_lock); |
| clk_register_clkdev(clk, "ssp_mux.2", NULL); |
| |
| clk = mmp_clk_register_apbc("ssp2", "ssp1_mux", apbc_base + APBC_SSP2, |
| 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "mmp-ssp.2"); |
| |
| clk = clk_register_mux(NULL, "ssp3_mux", ssp_parent, |
| ARRAY_SIZE(ssp_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apbc_base + APBC_SSP3, 4, 3, 0, &clk_lock); |
| clk_register_clkdev(clk, "ssp_mux.3", NULL); |
| |
| clk = mmp_clk_register_apbc("ssp3", "ssp1_mux", apbc_base + APBC_SSP3, |
| 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "mmp-ssp.3"); |
| |
| clk = clk_register_mux(NULL, "ssp4_mux", ssp_parent, |
| ARRAY_SIZE(ssp_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apbc_base + APBC_SSP4, 4, 3, 0, &clk_lock); |
| clk_register_clkdev(clk, "ssp_mux.4", NULL); |
| |
| clk = mmp_clk_register_apbc("ssp4", "ssp1_mux", apbc_base + APBC_SSP4, |
| 10, 0, &clk_lock); |
| clk_register_clkdev(clk, NULL, "mmp-ssp.4"); |
| |
| clk = mmp_clk_register_apmu("dfc", "pll1_4", apmu_base + APMU_DFC, |
| 0x19b, &clk_lock); |
| clk_register_clkdev(clk, NULL, "pxa3xx-nand.0"); |
| |
| clk = clk_register_mux(NULL, "sdh0_mux", sdh_parent, |
| ARRAY_SIZE(sdh_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apmu_base + APMU_SDH0, 6, 1, 0, &clk_lock); |
| clk_register_clkdev(clk, "sdh0_mux", NULL); |
| |
| clk = mmp_clk_register_apmu("sdh0", "sdh_mux", apmu_base + APMU_SDH0, |
| 0x1b, &clk_lock); |
| clk_register_clkdev(clk, NULL, "sdhci-pxa.0"); |
| |
| clk = clk_register_mux(NULL, "sdh1_mux", sdh_parent, |
| ARRAY_SIZE(sdh_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apmu_base + APMU_SDH1, 6, 1, 0, &clk_lock); |
| clk_register_clkdev(clk, "sdh1_mux", NULL); |
| |
| clk = mmp_clk_register_apmu("sdh1", "sdh1_mux", apmu_base + APMU_SDH1, |
| 0x1b, &clk_lock); |
| clk_register_clkdev(clk, NULL, "sdhci-pxa.1"); |
| |
| clk = mmp_clk_register_apmu("usb", "usb_pll", apmu_base + APMU_USB, |
| 0x9, &clk_lock); |
| clk_register_clkdev(clk, "usb_clk", NULL); |
| |
| clk = mmp_clk_register_apmu("sph", "usb_pll", apmu_base + APMU_USB, |
| 0x12, &clk_lock); |
| clk_register_clkdev(clk, "sph_clk", NULL); |
| |
| clk = clk_register_mux(NULL, "disp0_mux", disp_parent, |
| ARRAY_SIZE(disp_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apmu_base + APMU_DISP0, 6, 1, 0, &clk_lock); |
| clk_register_clkdev(clk, "disp_mux.0", NULL); |
| |
| clk = mmp_clk_register_apmu("disp0", "disp0_mux", |
| apmu_base + APMU_DISP0, 0x1b, &clk_lock); |
| clk_register_clkdev(clk, "fnclk", "mmp-disp.0"); |
| |
| clk = mmp_clk_register_apmu("disp0_hclk", "disp0_mux", |
| apmu_base + APMU_DISP0, 0x24, &clk_lock); |
| clk_register_clkdev(clk, "hclk", "mmp-disp.0"); |
| |
| clk = clk_register_mux(NULL, "ccic0_mux", ccic_parent, |
| ARRAY_SIZE(ccic_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apmu_base + APMU_CCIC0, 6, 1, 0, &clk_lock); |
| clk_register_clkdev(clk, "ccic_mux.0", NULL); |
| |
| clk = mmp_clk_register_apmu("ccic0", "ccic0_mux", |
| apmu_base + APMU_CCIC0, 0x1b, &clk_lock); |
| clk_register_clkdev(clk, "fnclk", "mmp-ccic.0"); |
| |
| clk = clk_register_mux(NULL, "ccic0_phy_mux", ccic_phy_parent, |
| ARRAY_SIZE(ccic_phy_parent), |
| CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, |
| apmu_base + APMU_CCIC0, 7, 1, 0, &clk_lock); |
| clk_register_clkdev(clk, "ccic_phy_mux.0", NULL); |
| |
| clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_phy_mux", |
| apmu_base + APMU_CCIC0, 0x24, &clk_lock); |
| clk_register_clkdev(clk, "phyclk", "mmp-ccic.0"); |
| |
| clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_mux", |
| CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0, |
| 10, 5, 0, &clk_lock); |
| clk_register_clkdev(clk, "sphyclk_div", NULL); |
| |
| clk = mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div", |
| apmu_base + APMU_CCIC0, 0x300, &clk_lock); |
| clk_register_clkdev(clk, "sphyclk", "mmp-ccic.0"); |
| } |
