Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-18 02:38:56 +00:00
Code Issues Projects Releases Packages Wiki Activity
u-boot/arch/arm/include/asm/arch-mx7ulp/clock.h

43 lines
858 B
C
Raw Normal View History

imx: mx7ulp: Add clock framework and functions Add a clock framework to support SCG1/PCC2/PCC3 for A7 to support get/set clock source, divider, clock rate and parent source. Users need to include pcc.h to use the APIs to for peripherals clock. Each peripheral clock is defined in enum pcc_clk type. SCG relevants APIs are defined in scg.h which supports clock rate get, PLL/PFD enablement and settings, and all SCG clock initialization. User need use enum scg_clk to access each clock source. In clock.c, we initialize necessary clocks at u-boot s_init and implement the clock functions used by driver modules to operate clocks dynamically. Signed-off-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Ye Li <ye.li@nxp.com> Cc: Stefano Babic <sbabic@denx.de>
2017-02-22 08:21:42 +00:00
/*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _ASM_ARCH_CLOCK_H
#define _ASM_ARCH_CLOCK_H
#include <common.h>
#include <asm/arch/pcc.h>
#include <asm/arch/scg.h>
/* Mainly for compatible to imx common code. */
enum mxc_clock {
MXC_ARM_CLK = 0,
MXC_AHB_CLK,
MXC_IPG_CLK,
MXC_UART_CLK,
MXC_CSPI_CLK,
MXC_AXI_CLK,
MXC_DDR_CLK,
MXC_ESDHC_CLK,
MXC_ESDHC2_CLK,
MXC_I2C_CLK,
};
u32 mxc_get_clock(enum mxc_clock clk);
u32 get_lpuart_clk(void);
imx: mx7ulp: Implement the clock functions for i2c driver Implement the i2c clock enable and get function for mx7ulp. These functions are required by imx_lpi2c driver. Signed-off-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Ye Li <ye.li@nxp.com> Reviewed-by: Stefano Babic <sbabic@denx.de>
2017-02-22 08:21:44 +00:00
#ifdef CONFIG_SYS_LPI2C_IMX
int enable_i2c_clk(unsigned char enable, unsigned i2c_num);
u32 imx_get_i2cclk(unsigned i2c_num);
#endif
imx: mx7ulp: Add clock framework and functions Add a clock framework to support SCG1/PCC2/PCC3 for A7 to support get/set clock source, divider, clock rate and parent source. Users need to include pcc.h to use the APIs to for peripherals clock. Each peripheral clock is defined in enum pcc_clk type. SCG relevants APIs are defined in scg.h which supports clock rate get, PLL/PFD enablement and settings, and all SCG clock initialization. User need use enum scg_clk to access each clock source. In clock.c, we initialize necessary clocks at u-boot s_init and implement the clock functions used by driver modules to operate clocks dynamically. Signed-off-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Ye Li <ye.li@nxp.com> Cc: Stefano Babic <sbabic@denx.de>
2017-02-22 08:21:42 +00:00
#ifdef CONFIG_MXC_OCOTP
void enable_ocotp_clk(unsigned char enable);
#endif
#ifdef CONFIG_USB_EHCI
void enable_usboh3_clk(unsigned char enable);
#endif
void init_clk_usdhc(u32 index);
void clock_init(void);
#endif
Reference in a new issue Copy permalink