Re: [PATCH v2] arm: dts: bcm2711: Describe Ethernet LEDs

[Florian Fainelli <florian.fainelli@xxxxxxxxxxxx>]

On 4/22/24 22:44, Stefan Wahren wrote:
> Hi Florian,
>
> Am 23.04.24 um 01:08 schrieb Florian Fainelli:
> > Describe the Ethernet LEDs for the Raspberry Pi 4 model B board as well
> > as the Raspberry Pi 4 CM board. The Raspberry Pi 400 board does not
> > include RJ45 connector LEDs so the 'leds' node is deleted accordingly.
> >
> > Signed-off-by: Florian Fainelli <florian.fainelli@xxxxxxxxxxxx>
> > ---
> > Changes in v2:
> >
> > - added "function = LED_FUNCTION_LAN"
> >
> >   .../arm/boot/dts/broadcom/bcm2711-rpi-4-b.dts | 20 +++++++++++++++++
> >   .../arm/boot/dts/broadcom/bcm2711-rpi-400.dts |  1 +
> >   .../boot/dts/broadcom/bcm2711-rpi-cm4-io.dts  | 22 +++++++++++++++++++
> >   3 files changed, 43 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 cfc8cb5e10ba..7a0f495ff726 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";
> > @@ -204,6 +205,25 @@ &genet_mdio {
> >       phy1: ethernet-phy@1 {
> >           /* No PHY interrupt */
> >           reg = <0x1>;
> > +
> > +        leds {
> > +            #address-cells = <1>;
> > +            #size-cells = <0>;
> > +
> > +            leds@0 {
> > +                reg = <0>;
> > +                color = <LED_COLOR_ID_GREEN>;
> > +                function = LED_FUNCTION_LAN;
> > +                default-state = "keep";
> > +            };
> > +
> > +            leds@1 {
> > +                reg = <1>;
> > +                color = <LED_COLOR_ID_AMBER>;
> > +                function = LED_FUNCTION_LAN;
> > +                default-state = "keep";
> > +            };
> > +        };
> this looks good to me, but i'm wondering about the address numbering.
> This ones starts with 0 and the CM4 starts with 1. Does this come from
> the PHY?

Yes the PHY numbering is local to the PHY, reg = 0 maps to LED1, reg = 1 
maps to LED2 and so on and so forth. There is no LED0 in the PHY 
datasheet, so I expect people writing DTSs to subtract by 1 when 
defining their "reg" property.

Will re-submit with the DT issues spotted by Rob's bot fixed.
--
Florian

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