linux-kernel - [PATCH] arm64: dts: imx8mp: Describe CSI2 GPIO expander on i.MX8MP DHCOM PDK3 board

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Message-ID: <20240319043733.134728-1-marex@denx.de>
Date: Tue, 19 Mar 2024 05:37:09 +0100
From: Marek Vasut <marex@...x.de>
To: linux-arm-kernel@...ts.infradead.org
Cc: Marek Vasut <marex@...x.de>,
	Conor Dooley <conor+dt@...nel.org>,
	Fabio Estevam <festevam@...il.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	NXP Linux Team <linux-imx@....com>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Rob Herring <robh+dt@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	kernel@...electronics.com,
	linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: dts: imx8mp: Describe CSI2 GPIO expander on i.MX8MP DHCOM PDK3 board

The production PDK3 carrier board rev.200 contains additional GPIO
expander to control power and reset signals for each CSI2 plug
separately. Describe this expander in the carrier board DT. The
label is used by sensor DTOs to reference the expander and its
signals.

Signed-off-by: Marek Vasut <marex@...x.de>
---
Cc: Conor Dooley <conor+dt@...nel.org>
Cc: Fabio Estevam <festevam@...il.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc: Marek Vasut <marex@...x.de>
Cc: NXP Linux Team <linux-imx@....com>
Cc: Pengutronix Kernel Team <kernel@...gutronix.de>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Sascha Hauer <s.hauer@...gutronix.de>
Cc: Shawn Guo <shawnguo@...nel.org>
Cc: devicetree@...r.kernel.org
Cc: imx@...ts.linux.dev
Cc: kernel@...electronics.com
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
---
 arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts b/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts
index b749e28e5ede5..ac7ec7533a3c8 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts
@@ -167,6 +167,16 @@ sgtl5000: codec@a {
 				VDDIO-supply = <&reg_vdd_3p3v_awo>;
 			};
 
+			csi2exp: gpio@24 {
+				compatible = "nxp,pca9570";
+				reg = <0x24>;
+				gpio-controller;
+				#gpio-cells = <2>;
+				gpio-line-names =
+					"CSI2_#RESET", "CSI2_#PWDN",
+					"CSI_#PWDN", "CSI_#RESET";
+			};
+
 			typec@3d {
 				compatible = "nxp,ptn5150";
 				reg = <0x3d>;
-- 
2.43.0