linux-kernel - [PATCH 1/5] ARM: dts: meson: move iio-hwmon for the SoC temperature to meson.dtsi

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Date:   Mon, 21 Dec 2020 19:13:02 +0100
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     linux-amlogic@...ts.infradead.org, khilman@...libre.com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        narmstrong@...libre.com,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH 1/5] ARM: dts: meson: move iio-hwmon for the SoC temperature to meson.dtsi

The SoC temperature can be retrieved from ADC channel 8 on all 32-bit
SoCs (Meson6, Meson8, Meson8b and Meson8m2). Move the iio-hwmon instance
to meson.dtsi instead of duplicating it in all board.dts.
If the temperature sensor calibration data is missing for a board then
iio-hwmon will simply not probe.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
---
 arch/arm/boot/dts/meson.dtsi              | 5 +++++
 arch/arm/boot/dts/meson8b-ec100.dts       | 5 -----
 arch/arm/boot/dts/meson8b-mxq.dts         | 5 -----
 arch/arm/boot/dts/meson8b-odroidc1.dts    | 5 -----
 arch/arm/boot/dts/meson8m2-mxiii-plus.dts | 5 -----
 5 files changed, 5 insertions(+), 20 deletions(-)

diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi
index 7649dd1e0b9e..5f074f7aa1a2 100644
--- a/arch/arm/boot/dts/meson.dtsi
+++ b/arch/arm/boot/dts/meson.dtsi
@@ -11,6 +11,11 @@ / {
 	#size-cells = <1>;
 	interrupt-parent = <&gic>;
 
+	iio-hwmon {
+		compatible = "iio-hwmon";
+		io-channels = <&saradc 8>;
+	};
+
 	soc {
 		compatible = "simple-bus";
 		#address-cells = <1>;
diff --git a/arch/arm/boot/dts/meson8b-ec100.dts b/arch/arm/boot/dts/meson8b-ec100.dts
index ed06102a4014..8e48ccc6b634 100644
--- a/arch/arm/boot/dts/meson8b-ec100.dts
+++ b/arch/arm/boot/dts/meson8b-ec100.dts
@@ -70,11 +70,6 @@ gpio-poweroff {
 		timeout-ms = <20000>;
 	};
 
-	iio-hwmon {
-		compatible = "iio-hwmon";
-		io-channels = <&saradc 8>;
-	};
-
 	leds {
 		compatible = "gpio-leds";
 
diff --git a/arch/arm/boot/dts/meson8b-mxq.dts b/arch/arm/boot/dts/meson8b-mxq.dts
index 33037ef62d0a..f3937d55472d 100644
--- a/arch/arm/boot/dts/meson8b-mxq.dts
+++ b/arch/arm/boot/dts/meson8b-mxq.dts
@@ -27,11 +27,6 @@ memory {
 		reg = <0x40000000 0x40000000>;
 	};
 
-	iio-hwmon {
-		compatible = "iio-hwmon";
-		io-channels = <&saradc 8>;
-	};
-
 	vcck: regulator-vcck {
 		compatible = "pwm-regulator";
 
diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
index 5963566dbcc9..c440ef94e082 100644
--- a/arch/arm/boot/dts/meson8b-odroidc1.dts
+++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
@@ -85,11 +85,6 @@ tf_io: gpio-regulator-tf_io {
 			  1800000 1>;
 	};
 
-	iio-hwmon {
-		compatible = "iio-hwmon";
-		io-channels = <&saradc 8>;
-	};
-
 	rtc32k_xtal: rtc32k-xtal-clk {
 		/* X3 in the schematics */
 		compatible = "fixed-clock";
diff --git a/arch/arm/boot/dts/meson8m2-mxiii-plus.dts b/arch/arm/boot/dts/meson8m2-mxiii-plus.dts
index 8f4eb1ed4581..fa6d55f1cfb9 100644
--- a/arch/arm/boot/dts/meson8m2-mxiii-plus.dts
+++ b/arch/arm/boot/dts/meson8m2-mxiii-plus.dts
@@ -45,11 +45,6 @@ button-function {
 		};
 	};
 
-	iio-hwmon {
-		compatible = "iio-hwmon";
-		io-channels = <&saradc 8>;
-	};
-
 	vcc_3v3: regulator-vcc3v3 {
 		compatible = "regulator-fixed";
 		regulator-name = "VCC3V3";
-- 
2.29.2