2023-07-17 04:48:16

by Li, Hua Qian

Subject: [DONOTMERGE PATCH v4 2/3] arm64: dts: ti: Add reserved memory for watchdog

From: Li Hua Qian <[email protected]>

This patch adds a reserved memory for the TI AM65X platform watchdog to
reserve the specific info, triggering the watchdog reset in last boot,
to know if the board reboot is due to a watchdog reset.

Reviewed-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Li Hua Qian <[email protected]>
---
arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
index e26bd988e522..4bb20d493651 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
@@ -63,6 +63,12 @@ rtos_ipc_memory_region: ipc-memories@a2000000 {
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 0x1000>;
+ no-map;
+ };
};

leds {
@@ -718,3 +724,7 @@ &mcu_r5fss0_core1 {
<&mcu_r5fss0_core1_memory_region>;
mboxes = <&mailbox0_cluster1>, <&mbox_mcu_r5fss0_core1>;
};
+
+&mcu_rti1 {
+ memory-region = <&wdt_reset_memory_region>;
+};
--
2.34.1

2023-07-17 06:25:29

by Krzysztof Kozlowski

Subject: Re: [DONOTMERGE PATCH v4 2/3] arm64: dts: ti: Add reserved memory for watchdog

On 17/07/2023 06:07, [email protected] wrote:
> From: Li Hua Qian <[email protected]>
>
> This patch adds a reserved memory for the TI AM65X platform watchdog to
> reserve the specific info, triggering the watchdog reset in last boot,
> to know if the board reboot is due to a watchdog reset.
>
> Reviewed-by: Krzysztof Kozlowski <[email protected]>

You are joking from us and our process, right?

NAK.

Best regards,
Krzysztof