Add node to test MAX11100 ADC with LED28 connected to the chip input line. The ADC sits on a gpio-spi master.
Signed-off-by: Jacopo Mondi <[email protected]> --- 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>; + status = "okay"; + + spi@0 { + compatible = "maxim,max11100"; + reg = <0>; + spi-max-frequency = <2500000>; + }; }; vcc_sdhi0: regulator-vcc-sdhi0 { -- 2.7.4
