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Message-ID: <1495711034-28410-2-git-send-email-eugen.hristev@microchip.com>
Date: Thu, 25 May 2017 14:17:11 +0300
From: Eugen Hristev <eugen.hristev@...rochip.com>
To: <nicolas.ferre@...rochip.com>, <alexandre.belloni@...rochip.com>,
<linux-iio@...r.kernel.org>, <lars@...afoo.de>,
<linux-arm-kernel@...ts.infradead.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<ludovic.desroches@...rochip.com>, <jic23@...nel.org>
CC: <eugen.hristev@...rochip.com>
Subject: [PATCH v3 1/4] ARM: dts: at91: sama5d2_xplained: enable ADTRG pin
Enable pinctrl for ADTRG pin (PD31) for ADC hardware trigger support.
Signed-off-by: Eugen Hristev <eugen.hristev@...rochip.com>
---
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;
--
2.7.4
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