From: Li Hua Qian huaqian.li@siemens.com

To have the WDIOF_CARDRESET support for the TI AM65x platform watchdog, this patch reserves some memories, which indicate if the current boot due to a watchdog reset.

Signed-off-by: Li Hua Qian huaqian.li@siemens.com

--- Here is the Kernel Reviewed-by Submission: https://lore.kernel.org/all/20230718021007.1338761-1-huaqian.li@siemens.com/

arch/arm/dts/k3-am65-iot2050-common.dtsi | 11 +++++++++++ 1 file changed, 11 insertions(+)

diff --git a/arch/arm/dts/k3-am65-iot2050-common.dtsi b/arch/arm/dts/k3-am65-iot2050-common.dtsi index 65da226847..b6135b849f 100644 --- a/arch/arm/dts/k3-am65-iot2050-common.dtsi +++ b/arch/arm/dts/k3-am65-iot2050-common.dtsi @@ -64,6 +64,12 @@ alignment = <0x1000>; no-map; }; + + /* To reserve the power-on(PON) reason for watchdog reset */ + wdt_reset_memory_region: wdt-memory@a2200000 { + reg = <0x00 0xa2200000 0x00 0x00001000>; + no-map; + }; };

leds { @@ -720,6 +726,11 @@ mboxes = <&mailbox0_cluster1 &mbox_mcu_r5fss0_core1>; };

+&mcu_rti1 { + memory-region = <&wdt_reset_memory_region>; + +}; + &icssg0_mdio { status = "disabled"; };