/* * 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/module.h> #include <linux/kernel.h> #include <linux/spinlock.h> #include <linux/io.h> #include <linux/delay.h> #include <linux/err.h> #include <mach/addr-map.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 clk_factor_masks uart_factor_masks = { .factor = 2, .num_mask = 0x1fff, .den_mask = 0x1fff, .num_shift = 16, .den_shift = 0, }; static struct 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(void) { struct clk *clk; struct clk *uart_pll; void __iomem *mpmu_base; void __iomem *apmu_base; void __iomem *apbc_base; mpmu_base = ioremap(APB_PHYS_BASE + 0x50000, SZ_4K); if (mpmu_base == NULL) { pr_err("error to ioremap MPMU base\n"); return; } apmu_base = ioremap(AXI_PHYS_BASE + 0x82800, SZ_4K); if (apmu_base == NULL) { pr_err("error to ioremap APMU base\n"); return; } apbc_base = ioremap(APB_PHYS_BASE + 0x15000, 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_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"); }