* [PATCH] arm: dts: bcm2711: Add wakeup and alias to cm4 rtc
@ 2026-09-25 6:53 Peter Robinson
2026-09-28 18:27 ` Florian Fainelli
0 siblings, 1 reply; 2+ messages in thread
From: Peter Robinson @ 2026-09-25 6:53 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Florian Fainelli,
Broadcom internal kernel review list, devicetree,
linux-rpi-kernel, linux-arm-kernel
Cc: Peter Robinson
The pcf85063 on the CM4 IO carrier board is capable of wake up
so set the parameter, also add it as an alias to rtc0.
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
---
arch/arm/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts b/arch/arm/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts
index 1f4ebec68370c..8e45de01d2ad1 100644
--- a/arch/arm/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts
+++ b/arch/arm/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts
@@ -7,6 +7,10 @@
/ {
model = "Raspberry Pi Compute Module 4 IO Board";
+
+ aliases {
+ rtc0 = &pcf85063;
+ };
};
&ddc0 {
@@ -103,11 +107,12 @@ &genet {
};
&i2c0_1 {
- rtc@51 {
+ pcf85063: rtc@51 {
/* Attention: An alarm resets the machine */
compatible = "nxp,pcf85063a";
reg = <0x51>;
quartz-load-femtofarads = <7000>;
+ wakeup-source;
};
};
--
2.55.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] arm: dts: bcm2711: Add wakeup and alias to cm4 rtc
2026-09-25 6:53 [PATCH] arm: dts: bcm2711: Add wakeup and alias to cm4 rtc Peter Robinson
@ 2026-09-28 18:27 ` Florian Fainelli
0 siblings, 0 replies; 2+ messages in thread
From: Florian Fainelli @ 2026-09-28 18:27 UTC (permalink / raw)
To: bcm-kernel-feedback-list, Peter Robinson, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Florian Fainelli, devicetree,
linux-rpi-kernel, linux-arm-kernel
Cc: Florian Fainelli
From: Florian Fainelli <f.fainelli@gmail.com>
On Fri, 25 Sep 2026 07:53:48 +0100, Peter Robinson <pbrobinson@gmail.com> wrote:
> The pcf85063 on the CM4 IO carrier board is capable of wake up
> so set the parameter, also add it as an alias to rtc0.
>
> Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
> ---
Applied to https://github.com/Broadcom/stblinux/commits/devicetree/next, thanks!
--
Florian
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