ARM: dts: imx53: enable PMIC RTC on imx53-qsrb

[PATCH] ARM: dts: imx53: enable PMIC RTC on imx53-qsrb

Posted by Alexander Kurz 2 months, 1 week ago

The RTC inside mc34708 is supported by RTC_DRV_MC13XXX since v3.6-rc1.
Enable the PMIC RTC on the imx53-qsrb. Without a battery the RTC may be
powered via the micro-USB connector when main 5V power is not available.

Signed-off-by: Alexander Kurz <akurz@blala.de>
---
 arch/arm/boot/dts/nxp/imx/imx53-qsrb.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/nxp/imx/imx53-qsrb.dts b/arch/arm/boot/dts/nxp/imx/imx53-qsrb.dts
index 2f06ad61a766..6938ad6dbc2c 100644
--- a/arch/arm/boot/dts/nxp/imx/imx53-qsrb.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx53-qsrb.dts
@@ -28,6 +28,7 @@ pmic: mc34708@8 {
 		reg = <0x08>;
 		interrupt-parent = <&gpio5>;
 		interrupts = <23 IRQ_TYPE_LEVEL_HIGH>;
+		fsl,mc13xxx-uses-rtc;
 		regulators {
 			sw1_reg: sw1a {
 				regulator-name = "SW1";
-- 
2.39.5

Re: [PATCH] ARM: dts: imx53: enable PMIC RTC on imx53-qsrb

Posted by Shawn Guo 1 month, 3 weeks ago

On Sat, Oct 11, 2025 at 06:02:51AM +0000, Alexander Kurz wrote:
> The RTC inside mc34708 is supported by RTC_DRV_MC13XXX since v3.6-rc1.
> Enable the PMIC RTC on the imx53-qsrb. Without a battery the RTC may be
> powered via the micro-USB connector when main 5V power is not available.
> 
> Signed-off-by: Alexander Kurz <akurz@blala.de>

Applied, thanks!