From 385d3632ba63f9a60047fa9f4f0a7d9629bc0613 Mon Sep 17 00:00:00 2001 From: Keerthy Date: Wed, 30 Nov 2016 15:02:53 +0530 Subject: am57xx: Set tps659038 PMIC GPIO7 pad mux value to POWERHOLD The GPIO7 pad mux should be programmed to POWERHOLD value as per board design. In cases where the PMIC is shut off the mux is set to GPIO7 mode. So during initialization to be on the safer side set the mode to POWERHOLD. Signed-off-by: Keerthy Reviewed-by: Tom Rini --- board/ti/am57xx/board.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'board/ti') diff --git a/board/ti/am57xx/board.c b/board/ti/am57xx/board.c index 797d7a4..5f2d4df 100644 --- a/board/ti/am57xx/board.c +++ b/board/ti/am57xx/board.c @@ -55,6 +55,9 @@ DECLARE_GLOBAL_DATA_PTR; #define SYSINFO_BOARD_NAME_MAX_LEN 45 +#define TPS65903X_PRIMARY_SECONDARY_PAD2 0xFB +#define TPS65903X_PAD2_POWERHOLD_MASK 0x20 + const struct omap_sysinfo sysinfo = { "Board: UNKNOWN(BeagleBoard X15?) REV UNKNOWN\n" }; @@ -457,6 +460,7 @@ int board_init(void) int board_late_init(void) { setup_board_eeprom_env(); + u8 val; /* * DEV_CTRL.DEV_ON = 1 please - else palmas switches off in 8 seconds @@ -471,6 +475,18 @@ int board_late_init(void) if (get_device_type() == HS_DEVICE) setenv("boot_fit", "1"); + /* + * Set the GPIO7 Pad to POWERHOLD. This has higher priority + * over DEV_CTRL.DEV_ON bit. This can be reset in case of + * PMIC Power off. So to be on the safer side set it back + * to POWERHOLD mode irrespective of the current state. + */ + palmas_i2c_read_u8(TPS65903X_CHIP_P1, TPS65903X_PRIMARY_SECONDARY_PAD2, + &val); + val = val | TPS65903X_PAD2_POWERHOLD_MASK; + palmas_i2c_write_u8(TPS65903X_CHIP_P1, TPS65903X_PRIMARY_SECONDARY_PAD2, + val); + return 0; } -- cgit v1.1