u-boot-brain/include/samsung/misc.h
Krzysztof Kozlowski e3ee4be321 arm: exynos: Detect revision later, when all resources are ready
Detection of board revision is done early - before power setup.  In case of
Odroid XU3/XU4/HC1 family, the detection is done using ADC which
is supplied by LDO4/VDD_ADC regulator.  This regulator could be turned
off (e.g. by kernel before reboot).  If ADC is used early, the
regulators are not yet available and the detection won't work.

Split the revision detection out of set_board_type() into separate
function called later - either when displaying board info (in late mode)
or during misc_init_r.  The idea is that set_board_type() will be called
early so its method of detection are limited to flattened device tree
(exynos5-dt-types.c for Exynos5) or GPIO (odroid.c for Exynos4412).  The
newly added set_board_revision() can be called only later, when
resources like regulator are available.

This is necessary to fix the detection of Odroid HC1 after reboot, if
kernel turned off the LDO4 regulator.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2019-03-11 15:53:19 +09:00

40 lines
771 B
C

#ifndef __SAMSUNG_MISC_COMMON_H__
#define __SAMSUNG_MISC_COMMON_H__
#ifdef CONFIG_REVISION_TAG
u32 get_board_rev(void);
#endif
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
void set_board_info(void);
#endif
#ifdef CONFIG_LCD_MENU
enum {
BOOT_MODE_INFO,
BOOT_MODE_THOR,
BOOT_MODE_UMS,
BOOT_MODE_DFU,
BOOT_MODE_GPT,
BOOT_MODE_ENV,
BOOT_MODE_EXIT,
};
void keys_init(void);
void check_boot_mode(void);
#endif /* CONFIG_LCD_MENU */
#ifdef CONFIG_CMD_BMP
void draw_logo(void);
#endif
#ifdef CONFIG_SET_DFU_ALT_INFO
char *get_dfu_alt_system(char *interface, char *devstr);
char *get_dfu_alt_boot(char *interface, char *devstr);
#endif
void set_board_type(void);
void set_board_revision(void);
const char *get_board_type(void);
#endif /* __SAMSUNG_MISC_COMMON_H__ */