From: Andreas Kemnade <andreas@kemnade.info>
Date: Thu, 10 Oct 2024 12:29:57 +0000 (+0200)
Subject: ARM: dts: omap: omap4-epson-embt2ws: add GPIO expander
X-Git-Tag: v6.13-rc1~140^2~23^2~7
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=358e912ed0e9a8e89377ab3488e304c05edb3cc2;p=linux.git

ARM: dts: omap: omap4-epson-embt2ws: add GPIO expander

Define the GPIO expander which controls at least some camera gpios.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Link: https://lore.kernel.org/r/20241010122957.85164-5-andreas@kemnade.info
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
---

diff --git a/arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts b/arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts
index 983a21d95db3..6bc8c0397c29 100644
--- a/arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts
+++ b/arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts
@@ -299,6 +299,19 @@
 
 	clock-frequency = <200000>;
 
+	/* is sometimes not available, research needed */
+	gpio_head: gpio@20 {
+		compatible = "ti,tca6408";
+		reg = <0x20>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	/*
+	 * camera chip at 0x3c, available if <&gpio_head 1> high
+	 * and <&gpio_head 5> low
+	 */
+
 	/* at head/glasses */
 	mpu9150h: imu@68 {
 		compatible = "invensense,mpu9150";