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@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@oss.nxp.com>

From: Frank Li <Frank.Li@nxp.com>


On Mon, 14 Sep 2026 11:21:06 +0800, Joy Zou wrote:
> 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.
> 
> [...]

Applied, thanks!

[1/2] arm64: dts: imx91-evk/qsb: add rtc1 alias for external PCF2131 RTC
      commit: 92fd18d609ff13e27ab9d19c4764633acde593ec
[2/2] arm64: dts: imx93-evk/qsb: add rtc1 alias for external PCF2131 RTC
      commit: fa7d47a05b464c5ec3af39ebd06b8b73abaa42ff

Best regards,
-- 
Frank Li <Frank.Li@nxp.com>