[PATCH 0/2] arm64: dts: imx91/imx93: add rtc1 alias for external PCF2131 RTC

[Joy Zou]

Only rtc0 was aliased to the internal bbnsm_rtc, while the external
PCF2131 RTC had no fixed index. When both RTC drivers are built as
modules, the pcf2131 may probe first and take rtc0, pushing bbnsm_rtc
to rtc1. Since suspend/resume wakeup relies on the internal bbnsm RTC
being rtc0, this broke wakeup.

Add an rtc1 alias for the PCF2131 on the i.MX91 and i.MX93 EVK/QSB
boards, so the external RTC keeps a fixed index while bbnsm_rtc always
stays rtc0.

Signed-off-by: Joy Zou <joy.zou at oss.nxp.com>
---
Joy Zou (2):
      arm64: dts: imx91-evk/qsb: add rtc1 alias for external PCF2131 RTC
      arm64: dts: imx93-evk/qsb: add rtc1 alias for external PCF2131 RTC

 arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts         | 1 +
 arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts           | 1 +
 arch/arm64/boot/dts/freescale/imx93-11x11-evk-common.dtsi | 1 +
 arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts           | 3 ++-
 4 files changed, 5 insertions(+), 1 deletion(-)
---
base-commit: c68a982815dcce5464e3bf2a31ac94f5146c04ca
change-id: 20260914-b4_imx91_93_rtc-07d17cf027ab

Best regards,
--  
Joy Zou <joy.zou at oss.nxp.com>