1 /* 2 * (C) Copyright 2010 Samsung Electronics 3 * Minkyu Kang <mk7.kang@samsung.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #ifndef __ASM_ARM_ARCH_CLK_H_ 9 #define __ASM_ARM_ARCH_CLK_H_ 10 11 #define APLL 0 12 #define MPLL 1 13 #define EPLL 2 14 #define HPLL 3 15 #define VPLL 4 16 #define BPLL 5 17 #define RPLL 6 18 #define SPLL 7 19 #define CPLL 8 20 #define DPLL 9 21 #define IPLL 10 22 23 #define MASK_PRE_RATIO(x) (0xff << ((x << 4) + 8)) 24 #define MASK_RATIO(x) (0xf << (x << 4)) 25 #define SET_PRE_RATIO(x, y) ((y & 0xff) << ((x << 4) + 8)) 26 #define SET_RATIO(x, y) ((y & 0xf) << (x << 4)) 27 28 enum pll_src_bit { 29 EXYNOS_SRC_MPLL = 6, 30 EXYNOS_SRC_EPLL, 31 EXYNOS_SRC_VPLL, 32 EXYNOS542X_SRC_MPLL = 3, 33 EXYNOS542X_SRC_SPLL, 34 EXYNOS542X_SRC_EPLL = 6, 35 EXYNOS542X_SRC_RPLL, 36 }; 37 38 unsigned long get_pll_clk(int pllreg); 39 unsigned long get_arm_clk(void); 40 unsigned long get_i2c_clk(void); 41 unsigned long get_pwm_clk(void); 42 unsigned long get_uart_clk(int dev_index); 43 unsigned long get_mmc_clk(int dev_index); 44 void set_mmc_clk(int dev_index, unsigned int div); 45 unsigned long get_lcd_clk(void); 46 void set_lcd_clk(void); 47 void set_mipi_clk(void); 48 int set_i2s_clk_source(unsigned int i2s_id); 49 int set_i2s_clk_prescaler(unsigned int src_frq, unsigned int dst_frq, 50 unsigned int i2s_id); 51 int set_epll_clk(unsigned long rate); 52 int set_spi_clk(int periph_id, unsigned int rate); 53 54 /** 55 * get the clk frequency of the required peripheral 56 * 57 * @param peripheral Peripheral id 58 * 59 * @return frequency of the peripheral clk 60 */ 61 unsigned long clock_get_periph_rate(int peripheral); 62 63 #endif 64