Re: [PATCH] arm: dts: bcm2711: Describe Ethernet LEDs

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On Mon, Aug 21, 2023 at 12:27:11PM -0700, Florian Fainelli wrote:
> Describe the Ethernet LEDs for the Raspberry Pi 4 model B board as well
> as the Raspberry Pi 4 CM board.
> 
> Signed-off-by: Florian Fainelli <florian.fainelli@xxxxxxxxxxxx>
> ---
>  arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts | 18 ++++++++++++++++++
>  .../arm/boot/dts/broadcom/bcm2711-rpi-cm4.dtsi | 18 ++++++++++++++++++
>  2 files changed, 36 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts
> index d5f8823230db..41db78cb0836 100644
> --- a/arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts
> +++ b/arch/arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts
> @@ -5,6 +5,7 @@
>  #include "bcm283x-rpi-led-deprecated.dtsi"
>  #include "bcm283x-rpi-usb-peripheral.dtsi"
>  #include "bcm283x-rpi-wifi-bt.dtsi"
> +#include <dt-bindings/leds/common.h>
>  
>  / {
>  	compatible = "raspberrypi,4-model-b", "brcm,bcm2711";
> @@ -197,6 +198,23 @@ &genet_mdio {
>  	phy1: ethernet-phy@1 {
>  		/* No PHY interrupt */
>  		reg = <0x1>;
> +
> +		leds {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			leds@0 {
> +				color = <LED_COLOR_ID_GREEN>;
> +				default-state = "keep";
> +				reg = <0>;
> +			};
> +
> +			leds@1 {
> +				color = <LED_COLOR_ID_AMBER>;
> +				default-state = "keep";
> +				reg = <1>;

Hi Florian

When we submitted leds in DT nodes as part of the merge, Rob wanted
the function property set. armada-370-rd.dts has:

function = LED_FUNCTION_WAN

because that port would typically be connected to your cable router
etc. But LED_FUNCTION_LAN also exists. This property can influence
naming so adding it later could be an ABI violation.

     Andrew



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