[PATCH 1/2] arm64: dts: imx91-evk/qsb: add rtc1 alias for external PCF2131 RTC

[Joy Zou]

Only rtc0 was aliased to bbnsm_rtc, while the external pcf2131 had
no fixed index. When both drivers are modules, the pcf2131 may register
first and take rtc0, pushing bbnsm_rtc to rtc1. Since suspend/resume
wakeup relies on the internal bbnsm RTC at rtc0, this broke wakeup.

Add rtc1 alias for the pcf2131 on imx91-11x11-evk and imx91-9x9-qsb,
so it keeps a fixed index while bbnsm_rtc stays rtc0.

Signed-off-by: Joy Zou <joy.zou@xxxxxxxxxxx>
---
 arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts | 1 +
 arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts   | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
index 5716febb5a50..ea7852da43b9 100644
--- a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
@@ -25,6 +25,7 @@ aliases {
 		mmc1 = &usdhc2;
 		mmc2 = &usdhc3;
 		rtc0 = &bbnsm_rtc;
+		rtc1 = &pcf2131;
 		serial0 = &lpuart1;
 		serial1 = &lpuart2;
 		serial2 = &lpuart3;
diff --git a/arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts b/arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts
index f1ed7983226b..b7f0e39b867a 100644
--- a/arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts
+++ b/arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts
@@ -23,6 +23,7 @@ aliases {
 		mmc0 = &usdhc1;
 		mmc1 = &usdhc2;
 		rtc0 = &bbnsm_rtc;
+		rtc1 = &pcf2131;
 		serial0 = &lpuart1;
 	};
 

-- 
2.34.1