* [PATCH] arm: dts: bcm2711: Add emc2301 to the CM4 IO board
@ 2026-09-25 6:54 Peter Robinson
2026-09-28 18:27 ` Florian Fainelli
0 siblings, 1 reply; 2+ messages in thread
From: Peter Robinson @ 2026-09-25 6:54 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 CM4 IO carrier board has a emc2301 fan controller. Add
it so it can be used on the CM4 board.
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
---
arch/arm/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts | 14 ++++++++++++++
1 file changed, 14 insertions(+)
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 8e45de01d2ad1..4f81fbdb85b56 100644
--- a/arch/arm/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts
+++ b/arch/arm/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts
@@ -107,6 +107,20 @@ &genet {
};
&i2c0_1 {
+ emc2301: fan-controller@2f {
+ compatible = "microchip,emc2301", "microchip,emc2305";
+ reg = <0x2f>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #pwm-cells = <3>;
+
+ fan@0 {
+ reg = <0x0>;
+ pwms = <&emc2301 26000 0 1>;
+ #cooling-cells = <2>;
+ };
+ };
+
pcf85063: rtc@51 {
/* Attention: An alarm resets the machine */
compatible = "nxp,pcf85063a";
--
2.55.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] arm: dts: bcm2711: Add emc2301 to the CM4 IO board
2026-09-25 6:54 [PATCH] arm: dts: bcm2711: Add emc2301 to the CM4 IO board 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 07:54:10 +0100, Peter Robinson <pbrobinson@gmail.com> wrote:
> The CM4 IO carrier board has a emc2301 fan controller. Add
> it so it can be used on the CM4 board.
>
> Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
> ---
Applied to https://github.com/Broadcom/stblinux/commits/devicetree/next, thanks!
--
Florian
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