2 * (C) Copyright 2010 Samsung Electronics
3 * Minkyu Kang <mk7.kang@samsung.com>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of
8 * the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 #ifndef __ASM_ARM_ARCH_CLK_H_
23 #define __ASM_ARM_ARCH_CLK_H_
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 void set_i2s_clk_source(void);
49 int set_i2s_clk_prescaler(unsigned int src_frq, unsigned int dst_frq);
50 int set_epll_clk(unsigned long rate);
51 int set_spi_clk(int periph_id, unsigned int rate);
54 * get the clk frequency of the required peripheral
56 * @param peripheral Peripheral id
58 * @return frequency of the peripheral clk
60 unsigned long clock_get_periph_rate(int peripheral);