linux-kernel - [PATCH 1/4] arm: dts: colibri-imx6ull: keep peripherals disabled

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Message-Id: <20221005133929.1243443-1-dev@pschenker.ch>
Date:   Wed,  5 Oct 2022 15:39:26 +0200
From:   Philippe Schenker <dev@...henker.ch>
To:     devicetree@...r.kernel.org
Cc:     Philippe Schenker <philippe.schenker@...adex.com>,
        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>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/4] arm: dts: colibri-imx6ull: keep peripherals disabled

From: Philippe Schenker <philippe.schenker@...adex.com>

Toradex does provide device-tree overlays to enable certain evaluation
hardware. Keep the buses disabled by default to be enabled again with
overlays.

For customers including this device-tree this has also the advantage
that the hardware we want by default running does not automatically
enable signals on their end.

Signed-off-by: Philippe Schenker <philippe.schenker@...adex.com>
---

 arch/arm/boot/dts/imx6ull-colibri.dtsi | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/imx6ull-colibri.dtsi b/arch/arm/boot/dts/imx6ull-colibri.dtsi
index 577a424b0e1d..a4429ba1f2ae 100644
--- a/arch/arm/boot/dts/imx6ull-colibri.dtsi
+++ b/arch/arm/boot/dts/imx6ull-colibri.dtsi
@@ -21,7 +21,7 @@ backlight: backlight {
 		pinctrl-0 = <&pinctrl_gpio_bl_on>;
 		power-supply = <&reg_3v3>;
 		pwms = <&pwm4 0 5000000 1>;
-		status = "okay";
+		status = "disabled";
 	};
 
 	gpio-keys {
@@ -42,7 +42,7 @@ panel_dpi: panel-dpi {
 		compatible = "edt,et057090dhu";
 		backlight = <&backlight>;
 		power-supply = <&reg_3v3>;
-		status = "okay";
+		status = "disabled";
 
 		port {
 			lcd_panel_in: endpoint {
@@ -159,7 +159,7 @@ &i2c1 {
 	pinctrl-1 = <&pinctrl_i2c1_gpio>;
 	sda-gpios = <&gpio1 29 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
 	scl-gpios = <&gpio1 28 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
-	status = "okay";
+	status = "disabled";
 
 	/* Atmel maxtouch controller */
 	atmel_mxt_ts: touchscreen@4a {
@@ -202,6 +202,7 @@ ad7879_ts: touchscreen@2c {
 		adi,median-filter-size = /bits/ 8 <2>;
 		adi,averaging = /bits/ 8 <1>;
 		adi,conversion-interval = /bits/ 8 <255>;
+		status = "disabled";
 	};
 };
 
@@ -209,6 +210,7 @@ &lcdif {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_lcdif_dat
 		     &pinctrl_lcdif_ctrl>;
+	status = "disabled";
 
 	port {
 		lcdif_out: endpoint {
-- 
2.37.3