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40 lines
1.2 KiB
Diff
40 lines
1.2 KiB
Diff
The SCPI protocol allows various sensors to be exposed to the OS. The
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list of supported sensors (and their kind) is provided by the SCPI
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provider, which is in ARM Trusted Firmware. The current implementation
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exports the temperature sensors, for instance.
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Since the temperature sensor requires a clock to be running, we set
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a fixed clock rate for this particular clock to prevent the Linux driver
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from turning it off.
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Signed-off-by: Andre Przywara <andre.p...@arm.com>
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---
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arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
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index 58c3675..7cb1b04 100644
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--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
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+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
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@@ -163,6 +163,11 @@
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clock-output-names = "cpu_clk";
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};
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};
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+
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+ scpi_sensors0: sensors {
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+ compatible = "arm,scpi-sensors";
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+ #thermal-sensor-cells = <1>;
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+ };
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};
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soc {
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@@ -307,6 +312,8 @@
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clock-names = "hosc", "losc";
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#clock-cells = <1>;
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#reset-cells = <1>;
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+ assigned-clocks = <&ccu CLK_THS>;
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+ assigned-clock-rates = <4000000>;
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};
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pio: pinctrl@1c20800 {
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--
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2.9.0
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