From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: linux-amlogic@lists.infradead.org, khilman@baylibre.com
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, narmstrong@baylibre.com
Subject: [PATCH 2/5] ARM: dts: meson: add the ADC thermal sensor to meson.dtsi
Date: Mon, 21 Dec 2020 19:13:03 +0100 [thread overview]
Message-ID: <20201221181306.904272-3-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20201221181306.904272-1-martin.blumenstingl@googlemail.com>
The SoC temperature can be retrieved from ADC channel 8 on all 32-bit
SoCs (Meson6, Meson8, Meson8b and Meson8m2). Add a "generic-adc-thermal"
instance to meson.dtsi so the thermal sensor is available for all SoCs.
If the temperature sensor calibration data is missing for a board then
the "generic-adc-thermal" will not probe and not register a thermal
sensor.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
arch/arm/boot/dts/meson.dtsi | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi
index 5f074f7aa1a2..e0ca5f08d07d 100644
--- a/arch/arm/boot/dts/meson.dtsi
+++ b/arch/arm/boot/dts/meson.dtsi
@@ -298,6 +298,13 @@ efuse: nvmem@0 {
};
};
+ thermal_sensor: thermal-sensor {
+ compatible = "generic-adc-thermal";
+ #thermal-sensor-cells = <0>;
+ io-channels = <&saradc 8>;
+ io-channel-names = "sensor-channel";
+ };
+
xtal: xtal-clk {
compatible = "fixed-clock";
clock-frequency = <24000000>;
--
2.29.2
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next prev parent reply other threads:[~2020-12-21 18:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-21 18:13 [PATCH 0/5] Thermal zone configuration for Meson8/Meson8b/Meson8m2 Martin Blumenstingl
2020-12-21 18:13 ` [PATCH 1/5] ARM: dts: meson: move iio-hwmon for the SoC temperature to meson.dtsi Martin Blumenstingl
2021-01-11 14:03 ` Neil Armstrong
2020-12-21 18:13 ` Martin Blumenstingl [this message]
2021-01-11 14:03 ` [PATCH 2/5] ARM: dts: meson: add the ADC thermal sensor " Neil Armstrong
2020-12-21 18:13 ` [PATCH 3/5] ARM: dts: meson8: add the thermal-zones with cooling configuration Martin Blumenstingl
2021-01-11 14:04 ` Neil Armstrong
2020-12-21 18:13 ` [PATCH 4/5] ARM: dts: meson8b: " Martin Blumenstingl
2021-01-11 14:04 ` Neil Armstrong
2020-12-21 18:13 ` [PATCH 5/5] ARM: multi_v7_defconfig: Enable support for the ADC thermal sensor Martin Blumenstingl
2021-01-25 18:42 ` [PATCH 0/5] Thermal zone configuration for Meson8/Meson8b/Meson8m2 Kevin Hilman
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