[RFC PATCH 3/3] arm64: dts: st: list both watchdog SMC ids on stm32mp23 and stm32mp25

[Mateusz Nowicki <mateusz.nowicki@posteo.net>]

Commit ae4d08bbe3f4 ("arm64: dts: st: fix arm,smc-id of the SMC watchdog
on stm32mp2") changed the watchdog SMC id from 0xb200005a to
0xbc000000, the OP-TEE default for the platform. That fixed the watchdog
with such firmware but broke it on boards whose firmware still uses
0xb200005a. List both ids, the driver takes the first one the firmware
accepts. Kernels that read a single id keep using 0xbc000000.

Fixes: ae4d08bbe3f4 ("arm64: dts: st: fix arm,smc-id of the SMC watchdog on stm32mp2")
Reported-by: Marek Vasut <marex@nabladev.com>
Closes: https://lore.kernel.org/all/1b14e1e4-962f-4391-91fd-b09143641643@nabladev.com/
Signed-off-by: Mateusz Nowicki <mateusz.nowicki@posteo.net>
---
 arch/arm64/boot/dts/st/stm32mp231.dtsi | 2 +-
 arch/arm64/boot/dts/st/stm32mp251.dtsi | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/st/stm32mp231.dtsi b/arch/arm64/boot/dts/st/stm32mp231.dtsi
index fefbf6f4f153..7526e86f5a1d 100644
--- a/arch/arm64/boot/dts/st/stm32mp231.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp231.dtsi
@@ -35,7 +35,7 @@ arm-pmu {
 
 	arm_wdt: watchdog {
 		compatible = "arm,smc-wdt";
-		arm,smc-id = <0xbc000000>;
+		arm,smc-id = <0xbc000000 0xb200005a>;
 		status = "disabled";
 	};
 
diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index dac3d2d23ff0..143d83216530 100644
--- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
@@ -36,7 +36,7 @@ arm-pmu {
 
 	arm_wdt: watchdog {
 		compatible = "arm,smc-wdt";
-		arm,smc-id = <0xbc000000>;
+		arm,smc-id = <0xbc000000 0xb200005a>;
 		status = "disabled";
 	};
 
-- 
2.56.0