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ARM: imx8m: Fix reset in SPL on NXP iMX8MN EVK

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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 <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Flavio Suligoi <f.suligoi@asem.it>
Cc: Harald Seiler <hws@denx.de>
Cc: Igor Opaniuk <igor.opaniuk@toradex.com>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Marek Vasut 2020-04-29 15:04:25 +02:00 committed by Stefano Babic
parent 77cfd0d2b6
commit 2455f91833
2 changed files with 17 additions and 0 deletions
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12
arch/arm/dts/imx8mn-ddr4-evk-u-boot.dtsi
View File

@ -3,6 +3,14 @@
* Copyright 2019 NXP
*/
/ {
wdt-reboot {
compatible = "wdt-reboot";
wdt = <&wdog1>;
u-boot,dm-spl;
};
};
&{/soc@0} {
u-boot,dm-pre-reloc;
u-boot,dm-spl;
@ -90,3 +98,7 @@
&usdhc3 {
u-boot,dm-spl;
};
&wdog1 {
u-boot,dm-spl;
};

5
configs/imx8mn_ddr4_evk_defconfig
View File

@ -30,6 +30,7 @@ CONFIG_SPL_BOARD_INIT=y
CONFIG_SPL_BOOTROM_SUPPORT=y
CONFIG_SPL_SEPARATE_BSS=y
CONFIG_SPL_I2C_SUPPORT=y
CONFIG_SPL_WATCHDOG_SUPPORT=y
CONFIG_HUSH_PARSER=y
CONFIG_SYS_PROMPT="u-boot=> "
# CONFIG_CMD_EXPORTENV is not set
@ -74,5 +75,9 @@ 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