Enable the adc on the sama5d2 Xplained board.
Signed-off-by: Ludovic Desroches <ludovic.desroches@xxxxxxxxx>
---
arch/arm/boot/dts/at91-sama5d2_xplained.dts | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/arch/arm/boot/dts/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
index c2fcc29..6b263d4 100644
--- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
@@ -251,7 +251,29 @@
};
};
+ adc: adc@fc030000 {
+ vddana-supply = <&vdd_3v3_lp_reg>;
+ vref-supply = <&vdd_3v3_lp_reg>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_adc_default>;
+ status = "okay";
+ };
+
pinctrl@fc038000 {
+ /*
+ * There is no real pinmux for ADC, if the pin
+ * is not requested by another peripheral then
+ * the muxing is done when channel is enabled.
+ * Requesting pins for ADC is GPIO is
+ * encouraged to prevent conflicts and to
+ * disable bias in order to be in the same
+ * state when the pin is not muxed to the adc.
+ */
+ pinctrl_adc_default: adc_default {
+ pinmux = <PIN_PD23__GPIO>;
+ bias-disable;
+ };
+
pinctrl_flx0_default: flx0_default {
pinmux = <PIN_PB28__FLEXCOM0_IO0>,
<PIN_PB29__FLEXCOM0_IO1>;
--
2.5.0
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