From: Philippe Schenker Date: Tue, 9 Apr 2019 15:24:12 +0000 (+0200) Subject: board: imx6ull: Add disable PMIC_STBY_REQ X-Git-Tag: v2019.07-rc2~30^2~34 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c2f38bf0a0ac7a903a27992f275e13d8e15cf023;p=platform%2Fkernel%2Fu-boot.git board: imx6ull: Add disable PMIC_STBY_REQ Disable output driver of PAD CCM_PMIC_STBY_REQ. This prevents the SOC to request for a lower voltage during sleep. This is necessary because the voltage is changing too slow for the SOC to wake up properly. Signed-off-by: Philippe Schenker Acked-by: Marcel Ziswiler Reviewed-by: Igor Opaniuk --- diff --git a/board/toradex/colibri-imx6ull/colibri-imx6ull.c b/board/toradex/colibri-imx6ull/colibri-imx6ull.c index b6f45ed..f1d5cc6 100644 --- a/board/toradex/colibri-imx6ull/colibri-imx6ull.c +++ b/board/toradex/colibri-imx6ull/colibri-imx6ull.c @@ -50,6 +50,8 @@ DECLARE_GLOBAL_DATA_PTR; #define LCD_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | \ PAD_CTL_DSE_48ohm) +#define MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR 0x2290040 + #define NAND_PAD_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_SRE_SLOW | PAD_CTL_HYS) #define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_PUS_22K_UP) @@ -331,6 +333,14 @@ int board_late_init(void) env_set("variant", "-wifi"); #endif + /* + * Disable output driver of PAD CCM_PMIC_STBY_REQ. This prevents the + * SOC to request for a lower voltage during sleep. This is necessary + * because the voltage is changing too slow for the SOC to wake up + * properly. + */ + __raw_writel(0x8080, MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR); + #ifdef CONFIG_CMD_BMODE add_board_boot_modes(board_boot_modes); #endif