mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-16 09:43:39 +09:00
12a46a384d
Add generic api to get the frequency of the required peripherial. This API gets the source clock frequency and returns the required frequency by dividing with first and second dividers based on the requirement. Test with command "sf probe 1:0; time sf read 40008000 0 1000". Try with different numbers of bytes and see that sane values are obtained Build and boot U-boot with this patch, backlight works properly. Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/*
|
|
* (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
|