diff options
Diffstat (limited to 'arch/arm/include/asm/arch-exynos/clk.h')
-rw-r--r-- | arch/arm/include/asm/arch-exynos/clk.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-exynos/clk.h b/arch/arm/include/asm/arch-exynos/clk.h new file mode 100644 index 0000000..73f8063 --- /dev/null +++ b/arch/arm/include/asm/arch-exynos/clk.h @@ -0,0 +1,62 @@ +/* + * (C) Copyright 2010 Samsung Electronics + * Minkyu Kang <mk7.kang@samsung.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ + +#ifndef __ASM_ARM_ARCH_CLK_H_ +#define __ASM_ARM_ARCH_CLK_H_ + +#define APLL 0 +#define MPLL 1 +#define EPLL 2 +#define HPLL 3 +#define VPLL 4 +#define BPLL 5 + +enum pll_src_bit { + EXYNOS_SRC_MPLL = 6, + EXYNOS_SRC_EPLL, + EXYNOS_SRC_VPLL, +}; + +unsigned long get_pll_clk(int pllreg); +unsigned long get_arm_clk(void); +unsigned long get_i2c_clk(void); +unsigned long get_pwm_clk(void); +unsigned long get_uart_clk(int dev_index); +unsigned long get_mmc_clk(int dev_index); +void set_mmc_clk(int dev_index, unsigned int div); +unsigned long get_lcd_clk(void); +void set_lcd_clk(void); +void set_mipi_clk(void); +void set_i2s_clk_source(void); +int set_i2s_clk_prescaler(unsigned int src_frq, unsigned int dst_frq); +int set_epll_clk(unsigned long rate); +int set_spi_clk(int periph_id, unsigned int rate); + +/** + * get the clk frequency of the required peripheral + * + * @param peripheral Peripheral id + * + * @return frequency of the peripheral clk + */ +unsigned long clock_get_periph_rate(int peripheral); + +#endif |