linux-kernel - [PATCH v2] arm: dts: imx6qdl: add gpio expander pca9535

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Message-Id: <20190719104615.5329-1-gilles.doffe@savoirfairelinux.com>
Date:   Fri, 19 Jul 2019 12:46:15 +0200
From:   Gilles DOFFE <gilles.doffe@...oirfairelinux.com>
To:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     jerome.oufella@...oirfairelinux.com, rennes@...oirfairelinux.com,
        robh+dt@...nel.org, mark.rutland@....com, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-imx@....com
Subject: [PATCH v2] arm: dts: imx6qdl: add gpio expander pca9535

The pca9535 gpio expander is present on the Rex baseboard, but missing
from the dtsi.

Add the new gpio controller and the associated interrupt line
MX6QDL_PAD_NANDF_CS3__GPIO6_IO16.

Signed-off-by: Gilles DOFFE <gilles.doffe@...oirfairelinux.com>
---
 arch/arm/boot/dts/imx6qdl-rex.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl-rex.dtsi b/arch/arm/boot/dts/imx6qdl-rex.dtsi
index 97f1659144ea..b517efb22fcb 100644
--- a/arch/arm/boot/dts/imx6qdl-rex.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-rex.dtsi
@@ -136,6 +136,19 @@
 		compatible = "atmel,24c02";
 		reg = <0x57>;
 	};
+
+	pca9535: gpio8@27 {
+		compatible = "nxp,pca9535";
+		reg = <0x27>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_pca9535>;
+		interrupt-parent = <&gpio6>;
+		interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+	};
 };
 
 &i2c3 {
@@ -237,6 +250,12 @@
 			>;
 		};
 
+		pinctrl_pca9535: pca9535 {
+			fsl,pins = <
+				MX6QDL_PAD_NANDF_CS3__GPIO6_IO16	0x00017059
+		   >;
+		};
+
 		pinctrl_uart1: uart1grp {
 			fsl,pins = <
 				MX6QDL_PAD_CSI0_DAT10__UART1_TX_DATA	0x1b0b1
-- 
2.19.1