[PATCH v5 1/4] ARM: dts: at91: sama5d2_xplained: enable ADTRG pin

On 20/06/2017 at 18:55, Jonathan Cameron wrote:

On Thu, 15 Jun 2017 16:24:54 +0300
Eugen Hristev [off-list ref] wrote:

quoted

Enable pinctrl for ADTRG pin (PD31) for ADC hardware trigger support.

Signed-off-by: Eugen Hristev <redacted>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>

The driver changes are on their way upstream.

Acked-by: Jonathan Cameron <jic23@kernel.org>

Thanks Jonathan,

Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>

Eugen, note that we may need to wait for 4.14 as our changes for 4.13
are already queued in arm-soc...

Best regards,

quoted

---
 arch/arm/boot/dts/at91-sama5d2_xplained.dts | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
index 0bef9e0..04754b1 100644
--- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts

@@ -303,7 +303,7 @@
 				vddana-supply = <&vdd_3v3_lp_reg>;
 				vref-supply = <&vdd_3v3_lp_reg>;
 				pinctrl-names = "default";
-				pinctrl-0 = <&pinctrl_adc_default>;
+				pinctrl-0 = <&pinctrl_adc_default &pinctrl_adtrg_default>;
 				status = "okay";
 			};
 

@@ -322,6 +322,20 @@
 					bias-disable;
 				};
 
+				/*
+				 * The ADTRG pin can work on any edge type.
+				 * In here it's being pulled up, so need to
+				 * connect it to ground to get an edge e.g.
+				 * Trigger can be configured on falling, rise
+				 * or any edge, and the pull-up can be changed
+				 * to pull-down or left floating according to
+				 * needs.
+				 */
+				pinctrl_adtrg_default: adtrg_default {
+					pinmux = <PIN_PD31__ADTRG>;
+					bias-pull-up;
+				};
+
 				pinctrl_charger_chglev: charger_chglev {
 					pinmux = <PIN_PA12__GPIO>;
 					bias-disable;

-- 
Nicolas Ferre