From patchwork Wed Apr 29 13:04:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harald Seiler X-Patchwork-Id: 238880 List-Id: U-Boot discussion From: hws at denx.de (Harald Seiler) Date: Wed, 29 Apr 2020 15:04:24 +0200 Subject: [PATCH 4/8] ARM: imx8m: Fix reset in SPL on NXP iMX8MM EVK In-Reply-To: <20200429130428.124788-1-hws@denx.de> References: <20200429130428.124788-1-hws@denx.de> Message-ID: <20200429130428.124788-5-hws@denx.de> From: Marek Vasut Board files should not re-implement do_reset() to work around this function not being defined in for specific configurations. Rather, the fix is to compile in drivers which implement this properly. This patch enables sysreset and watchdog drivers in SPL and ties them together to implement the same as the do_reset() hack in the board file, except correctly in the DM/DT framework. Signed-off-by: Marek Vasut Cc: Fabio Estevam Cc: Flavio Suligoi Cc: Harald Seiler Cc: Igor Opaniuk Cc: Marcel Ziswiler Cc: Oleksandr Suvorov Cc: Peng Fan Cc: Stefano Babic --- arch/arm/dts/imx8mm-evk-u-boot.dtsi | 12 ++++++++++++ board/freescale/imx8mm_evk/spl.c | 9 --------- configs/imx8mm_evk_defconfig | 5 +++++ 3 files changed, 17 insertions(+), 9 deletions(-) diff --git a/arch/arm/dts/imx8mm-evk-u-boot.dtsi b/arch/arm/dts/imx8mm-evk-u-boot.dtsi index 3502602fbb86..b5c12105a9d1 100644 --- a/arch/arm/dts/imx8mm-evk-u-boot.dtsi +++ b/arch/arm/dts/imx8mm-evk-u-boot.dtsi @@ -3,6 +3,14 @@ * Copyright 2019 NXP */ +/ { + wdt-reboot { + compatible = "wdt-reboot"; + wdt = <&wdog1>; + u-boot,dm-spl; + }; +}; + &{/soc at 0} { u-boot,dm-pre-reloc; u-boot,dm-spl; @@ -117,3 +125,7 @@ &fec1 { phy-reset-gpios = <&gpio4 22 GPIO_ACTIVE_LOW>; }; + +&wdog1 { + u-boot,dm-spl; +}; diff --git a/board/freescale/imx8mm_evk/spl.c b/board/freescale/imx8mm_evk/spl.c index 5d17f397cb68..4d34622465b3 100644 --- a/board/freescale/imx8mm_evk/spl.c +++ b/board/freescale/imx8mm_evk/spl.c @@ -161,12 +161,3 @@ void board_init_f(ulong dummy) board_init_r(NULL, 0); } - -int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - puts ("resetting ...\n"); - - reset_cpu(WDOG1_BASE_ADDR); - - return 0; -} diff --git a/configs/imx8mm_evk_defconfig b/configs/imx8mm_evk_defconfig index d988507bc330..120c76633066 100644 --- a/configs/imx8mm_evk_defconfig +++ b/configs/imx8mm_evk_defconfig @@ -30,6 +30,7 @@ CONFIG_SPL_BOARD_INIT=y CONFIG_SPL_SEPARATE_BSS=y CONFIG_SPL_I2C_SUPPORT=y CONFIG_SPL_POWER_SUPPORT=y +CONFIG_SPL_WATCHDOG_SUPPORT=y CONFIG_HUSH_PARSER=y CONFIG_SYS_PROMPT="u-boot=> " # CONFIG_CMD_EXPORTENV is not set @@ -82,5 +83,9 @@ CONFIG_DM_REGULATOR_FIXED=y CONFIG_DM_REGULATOR_GPIO=y CONFIG_MXC_UART=y CONFIG_SYSRESET=y +CONFIG_SPL_SYSRESET=y CONFIG_SYSRESET_PSCI=y +CONFIG_SYSRESET_WATCHDOG=y CONFIG_DM_THERMAL=y +# CONFIG_WATCHDOG is not set +CONFIG_IMX_WATCHDOG=y