Hi Jacopo,
On Tue, Dec 6, 2016 at 5:34 PM, Jacopo Mondi <jacopo@xxxxxxxxxx> wrote:
> Add node to test MAX11100 ADC with LED28 connected to the chip input
> line.
What does the name "LED28" refer to?
> The ADC sits on a gpio-spi master.
>
> Signed-off-by: Jacopo Mondi <jacopo@xxxxxxxxxx>
> ---
>
> Sending as RFC only, not for inclusion.
> Used to test MAX11100 ADC driver currently connected to Koelsch GPIO
> expander.
> Adding LED28 as ADC input line.
>
> ---
> arch/arm/boot/dts/r8a7791-koelsch.dts | 21 +++++++++++++++++++++
> 1 file changed, 21 insertions(+)
>
> diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts
> index 5405d33..ac8f10d 100644
> --- a/arch/arm/boot/dts/r8a7791-koelsch.dts
> +++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
> @@ -170,6 +170,27 @@
> gpios = <&gpio2 21 GPIO_ACTIVE_HIGH>;
> label = "LED8";
> };
> + led28 {
> + gpios = <&gpio5 28 GPIO_ACTIVE_HIGH>;
> + label = "LED28";
> + };
> + };
> +
> + spi_gpio: spi-gpio {
> + compatible = "spi-gpio";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + gpio-sck = <&gpio5 27 GPIO_ACTIVE_HIGH>;
> + gpio-miso = <&gpio5 25 GPIO_ACTIVE_HIGH>;
> + num-chipselects = <1>;
> + cs-gpios = <&gpio5 26 GPIO_ACTIVE_LOW>;
I would keep all gpios together.
> + status = "okay";
> +
> + spi@0 {
adc@0
> + compatible = "maxim,max11100";
> + reg = <0>;
> + spi-max-frequency = <2500000>;
> + };
> };
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
