Hi Marco,
Quoting Marco Felsch (2023-10-21 15:08:02)
> Hi Kieran,
>
> On 23-10-21, Kieran Bingham wrote:
> > Map the 'RUN' LED present on the Debix-SOM as a heartbeat.
> >
> > Signed-off-by: Kieran Bingham <kieran.bingham@xxxxxxxxxxxxxxxx>
> > ---
> > .../dts/freescale/imx8mp-debix-som-a.dtsi | 19 +++++++++++++++++++
> > 1 file changed, 19 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a.dtsi
> > index bc312aa1bfc8..c9a81486da48 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a.dtsi
> > @@ -20,6 +20,19 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
> > gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
> > enable-active-high;
> > };
> > +
> > + gpio-leds {
> > + compatible = "gpio-leds";
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&pinctrl_gpio_led>;
> > +
> > + status {
>
> according the bindings-doc, this should be:
>
> 'led-status' or 'led-0'
Interesting - I can see 'led-0' is supported, but I can't see if
led-status is supported.
Documentation/devicetree/bindings/leds/leds-gpio.yaml:
patternProperties:
# The first form is preferred, but fall back to just 'led' anywhere in the
# node name to at least catch some child nodes.
"(^led-[0-9a-f]$|led)":
type: object
$ref: common.yaml#
unevaluatedProperties: false
That regex looks like it wouldn't support 'led-status'. Otherwise I'd
probably label it as 'led-run' to match how the LED is physically
labelled.
I've set led-0 locally for now.
>
> > + label = "yellow:status";
>
> label is deprecated, instead function and color should be used.
Ohh - I knew that, and I should have remembered this from the last time
I did an LED. That was too long ago and too small a task I guess.
Looking more closely, the LED is green - not yellow too! so I've udpated
this with:
led-0 {
gpios = <&gpio3 16 GPIO_ACTIVE_HIGH>;
default-state = "on";
linux,default-trigger = "heartbeat";
function = LED_FUNCTION_STATUS;
color = <LED_COLOR_ID_GREEN>;
};
Updating, for a v2.
> With that fixed feel to add my:
>
> Reviewed-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
Thanks.
--
Kieran
>
> > + gpios = <&gpio3 16 GPIO_ACTIVE_HIGH>;
> > + default-state = "on";
> > + linux,default-trigger = "heartbeat";
> > + };
> > + };
> > };
> >
> > &A53_0 {
> > @@ -203,6 +216,12 @@ &wdog1 {
> > };
> >
> > &iomuxc {
> > + pinctrl_gpio_led: gpioledgrp {
> > + fsl,pins = <
> > + MX8MP_IOMUXC_NAND_READY_B__GPIO3_IO16 0x19
> > + >;
> > + };
> > +
> > pinctrl_i2c1: i2c1grp {
> > fsl,pins = <
> > MX8MP_IOMUXC_I2C1_SCL__I2C1_SCL 0x400001c2
> > --
> > 2.34.1
> >
> >
