/* * mmp2 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 0x0 #define APBC_TWSI0 0x4 #define APBC_TWSI1 0x8 #define APBC_TWSI2 0xc #define APBC_TWSI3 0x10 #define APBC_TWSI4 0x7c #define APBC_TWSI5 0x80 #define APBC_KPC 0x18 #define APBC_UART0 0x2c #define APBC_UART1 0x30 #define APBC_UART2 0x34 #define APBC_UART3 0x88 #define APBC_GPIO 0x38 #define APBC_PWM0 0x3c #define APBC_PWM1 0x40 #define APBC_PWM2 0x44 #define APBC_PWM3 0x48 #define APBC_SSP0 0x50 #define APBC_SSP1 0x54 #define APBC_SSP2 0x58 #define APBC_SSP3 0x5c #define APMU_SDH0 0x54 #define APMU_SDH1 0x58 #define APMU_SDH2 0xe8 #define APMU_SDH3 0xec #define APMU_USB 0x5c #define APMU_DISP0 0x4c #define APMU_DISP1 0x110 #define APMU_CCIC0 0x50 #define APMU_CCIC1 0xf4 #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 = 14634, .den = 2165}, /*14.745MHZ */ {.num = 3521, .den = 689}, /*19.23MHZ */ {.num = 9679, .den = 5728}, /*58.9824MHZ */ {.num = 15850, .den = 9451}, /*59.429MHZ */ }; static const char *uart_parent[] = {"uart_pll", "vctcxo"}; static const char *ssp_parent[] = {"vctcxo_4", "vctcxo_2", "vctcxo", "pll1_16"}; static const char *sdh_parent[] = {"pll1_4", "pll2", "usb_pll", "pll1"}; static const char *disp_parent[] = {"pll1", "pll1_16", "pll2", "vctcxo"}; static const char *ccic_parent[] = {"pll1_2", "pll1_16", "vctcxo"}; void __init mmp2_clk_init(void) { struct clk *clk; struct clk *vctcxo; 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); vctcxo = clk_register_fixed_rate(NULL, "vctcxo", NULL, CLK_IS_ROOT, 26000000); clk_register_clkdev(vctcxo, "vctcxo", NULL); clk = clk_register_fixed_rate(NULL, "pll1", NULL, CLK_IS_ROOT, 800000000); clk_register_clkdev(clk, "pll1", NULL); clk = clk_register_fixed_rate(NULL, "usb_pll", NULL, CLK_IS_ROOT, 480000000); clk_register_clkdev(clk, "usb_pll", NULL); clk = clk_register_fixed_rate(NULL, "pll2", NULL, CLK_IS_ROOT, 960000000); clk_register_clkdev(clk, "pll2", 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_20", "pll1_4", CLK_SET_RATE_PARENT, 1, 5); clk_register_clkdev(clk, "pll1_20", NULL); clk = clk_register_fixed_factor(NULL, "pll1_3", "pll1", CLK_SET_RATE_PARENT, 1, 3); clk_register_clkdev(clk, "pll1_3", NULL); clk = clk_register_fixed_factor(NULL, "pll1_6", "pll1_3", CLK_SET_RATE_PARENT, 1, 2); 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, "pll2_2", "pll2", CLK_SET_RATE_PARENT, 1, 2); clk_register_clkdev(clk, "pll2_2", NULL); clk = clk_register_fixed_factor(NULL, "pll2_4", "pll2_2", CLK_SET_RATE_PARENT, 1, 2); clk_register_clkdev(clk, "pll2_4", NULL); clk = clk_register_fixed_factor(NULL, "pll2_8", "pll2_4", CLK_SET_RATE_PARENT, 1, 2); clk_register_clkdev(clk, "pll2_8", NULL); clk = clk_register_fixed_factor(NULL, "pll2_16", "pll2_8", CLK_SET_RATE_PARENT, 1, 2); clk_register_clkdev(clk, "pll2_16", NULL); clk = clk_register_fixed_factor(NULL, "pll2_3", "pll2", CLK_SET_RATE_PARENT, 1, 3); clk_register_clkdev(clk, "pll2_3", NULL); clk = clk_register_fixed_factor(NULL, "pll2_6", "pll2_3", CLK_SET_RATE_PARENT, 1, 2); clk_register_clkdev(clk, "pll2_6", NULL); clk = clk_register_fixed_factor(NULL, "pll2_12", "pll2_6", CLK_SET_RATE_PARENT, 1, 2); clk_register_clkdev(clk, "pll2_12", NULL); clk = clk_register_fixed_factor(NULL, "vctcxo_2", "vctcxo", CLK_SET_RATE_PARENT, 1, 2); clk_register_clkdev(clk, "vctcxo_2", NULL); clk = clk_register_fixed_factor(NULL, "vctcxo_4", "vctcxo_2", CLK_SET_RATE_PARENT, 1, 2); clk_register_clkdev(clk, "vctcxo_4", NULL); clk = 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(clk, 14745600); clk_register_clkdev(clk, "uart_pll", NULL); clk = mmp_clk_register_apbc("twsi0", "vctcxo", apbc_base + APBC_TWSI0, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "pxa2xx-i2c.0"); clk = mmp_clk_register_apbc("twsi1", "vctcxo", apbc_base + APBC_TWSI1, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "pxa2xx-i2c.1"); clk = mmp_clk_register_apbc("twsi2", "vctcxo", apbc_base + APBC_TWSI2, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "pxa2xx-i2c.2"); clk = mmp_clk_register_apbc("twsi3", "vctcxo", apbc_base + APBC_TWSI3, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "pxa2xx-i2c.3"); clk = mmp_clk_register_apbc("twsi4", "vctcxo", apbc_base + APBC_TWSI4, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "pxa2xx-i2c.4"); clk = mmp_clk_register_apbc("twsi5", "vctcxo", apbc_base + APBC_TWSI5, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "pxa2xx-i2c.5"); clk = mmp_clk_register_apbc("gpio", "vctcxo", apbc_base + APBC_GPIO, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "mmp2-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, "mmp-rtc"); clk = mmp_clk_register_apbc("pwm0", "vctcxo", apbc_base + APBC_PWM0, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "mmp2-pwm.0"); clk = mmp_clk_register_apbc("pwm1", "vctcxo", apbc_base + APBC_PWM1, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "mmp2-pwm.1"); clk = mmp_clk_register_apbc("pwm2", "vctcxo", apbc_base + APBC_PWM2, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "mmp2-pwm.2"); clk = mmp_clk_register_apbc("pwm3", "vctcxo", apbc_base + APBC_PWM3, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "mmp2-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, vctcxo); 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, vctcxo); 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, vctcxo); 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, "uart3_mux", uart_parent, ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, apbc_base + APBC_UART3, 4, 3, 0, &clk_lock); clk_set_parent(clk, vctcxo); clk_register_clkdev(clk, "uart_mux.3", NULL); clk = mmp_clk_register_apbc("uart3", "uart3_mux", apbc_base + APBC_UART3, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "pxa2xx-uart.3"); 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", "ssp2_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", "ssp3_mux", apbc_base + APBC_SSP3, 10, 0, &clk_lock); clk_register_clkdev(clk, NULL, "mmp-ssp.3"); clk = clk_register_mux(NULL, "sdh_mux", sdh_parent, ARRAY_SIZE(sdh_parent), CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, apmu_base + APMU_SDH0, 8, 2, 0, &clk_lock); clk_register_clkdev(clk, "sdh_mux", NULL); clk = clk_register_divider(NULL, "sdh_div", "sdh_mux", CLK_SET_RATE_PARENT, apmu_base + APMU_SDH0, 10, 4, CLK_DIVIDER_ONE_BASED, &clk_lock); clk_register_clkdev(clk, "sdh_div", NULL); clk = mmp_clk_register_apmu("sdh0", "sdh_div", apmu_base + APMU_SDH0, 0x1b, &clk_lock); clk_register_clkdev(clk, NULL, "sdhci-pxav3.0"); clk = mmp_clk_register_apmu("sdh1", "sdh_div", apmu_base + APMU_SDH1, 0x1b, &clk_lock); clk_register_clkdev(clk, NULL, "sdhci-pxav3.1"); clk = mmp_clk_register_apmu("sdh2", "sdh_div", apmu_base + APMU_SDH2, 0x1b, &clk_lock); clk_register_clkdev(clk, NULL, "sdhci-pxav3.2"); clk = mmp_clk_register_apmu("sdh3", "sdh_div", apmu_base + APMU_SDH3, 0x1b, &clk_lock); clk_register_clkdev(clk, NULL, "sdhci-pxav3.3"); clk = mmp_clk_register_apmu("usb", "usb_pll", apmu_base + APMU_USB, 0x9, &clk_lock); clk_register_clkdev(clk, "usb_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, 2, 0, &clk_lock); clk_register_clkdev(clk, "disp_mux.0", NULL); clk = clk_register_divider(NULL, "disp0_div", "disp0_mux", CLK_SET_RATE_PARENT, apmu_base + APMU_DISP0, 8, 4, CLK_DIVIDER_ONE_BASED, &clk_lock); clk_register_clkdev(clk, "disp_div.0", NULL); clk = mmp_clk_register_apmu("disp0", "disp0_div", apmu_base + APMU_DISP0, 0x1b, &clk_lock); clk_register_clkdev(clk, NULL, "mmp-disp.0"); clk = clk_register_divider(NULL, "disp0_sphy_div", "disp0_mux", 0, apmu_base + APMU_DISP0, 15, 5, 0, &clk_lock); clk_register_clkdev(clk, "disp_sphy_div.0", NULL); clk = mmp_clk_register_apmu("disp0_sphy", "disp0_sphy_div", apmu_base + APMU_DISP0, 0x1024, &clk_lock); clk_register_clkdev(clk, "disp_sphy.0", NULL); clk = clk_register_mux(NULL, "disp1_mux", disp_parent, ARRAY_SIZE(disp_parent), CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, apmu_base + APMU_DISP1, 6, 2, 0, &clk_lock); clk_register_clkdev(clk, "disp_mux.1", NULL); clk = clk_register_divider(NULL, "disp1_div", "disp1_mux", CLK_SET_RATE_PARENT, apmu_base + APMU_DISP1, 8, 4, CLK_DIVIDER_ONE_BASED, &clk_lock); clk_register_clkdev(clk, "disp_div.1", NULL); clk = mmp_clk_register_apmu("disp1", "disp1_div", apmu_base + APMU_DISP1, 0x1b, &clk_lock); clk_register_clkdev(clk, NULL, "mmp-disp.1"); clk = mmp_clk_register_apmu("ccic_arbiter", "vctcxo", apmu_base + APMU_CCIC0, 0x1800, &clk_lock); clk_register_clkdev(clk, "ccic_arbiter", NULL); 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, 2, 0, &clk_lock); clk_register_clkdev(clk, "ccic_mux.0", NULL); clk = clk_register_divider(NULL, "ccic0_div", "ccic0_mux", CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0, 17, 4, CLK_DIVIDER_ONE_BASED, &clk_lock); clk_register_clkdev(clk, "ccic_div.0", NULL); clk = mmp_clk_register_apmu("ccic0", "ccic0_div", apmu_base + APMU_CCIC0, 0x1b, &clk_lock); clk_register_clkdev(clk, "fnclk", "mmp-ccic.0"); clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_div", apmu_base + APMU_CCIC0, 0x24, &clk_lock); clk_register_clkdev(clk, "phyclk", "mmp-ccic.0"); clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_div", CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0, 10, 5, 0, &clk_lock); clk_register_clkdev(clk, "sphyclk_div", "mmp-ccic.0"); 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"); clk = clk_register_mux(NULL, "ccic1_mux", ccic_parent, ARRAY_SIZE(ccic_parent), CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, apmu_base + APMU_CCIC1, 6, 2, 0, &clk_lock); clk_register_clkdev(clk, "ccic_mux.1", NULL); clk = clk_register_divider(NULL, "ccic1_div", "ccic1_mux", CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC1, 16, 4, CLK_DIVIDER_ONE_BASED, &clk_lock); clk_register_clkdev(clk, "ccic_div.1", NULL); clk = mmp_clk_register_apmu("ccic1", "ccic1_div", apmu_base + APMU_CCIC1, 0x1b, &clk_lock); clk_register_clkdev(clk, "fnclk", "mmp-ccic.1"); clk = mmp_clk_register_apmu("ccic1_phy", "ccic1_div", apmu_base + APMU_CCIC1, 0x24, &clk_lock); clk_register_clkdev(clk, "phyclk", "mmp-ccic.1"); clk = clk_register_divider(NULL, "ccic1_sphy_div", "ccic1_div", CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC1, 10, 5, 0, &clk_lock); clk_register_clkdev(clk, "sphyclk_div", "mmp-ccic.1"); clk = mmp_clk_register_apmu("ccic1_sphy", "ccic1_sphy_div", apmu_base + APMU_CCIC1, 0x300, &clk_lock); clk_register_clkdev(clk, "sphyclk", "mmp-ccic.1"); }