[PATCH v2 2/3] arm64: dts: amlogic: a1: introduce cpu temperature sensor

Dmitry Rokosov ddrokosov at salutedevices.com
Thu Mar 28 12:26:36 PDT 2024


The A1 SoC family has only one thermal sensor for CPU temperature
measurement. It is required to set the TS clock rate to 500kHz to make
it workable.

Signed-off-by: Dmitry Rokosov <ddrokosov at salutedevices.com>
---
 arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index f65d4a77ee52..de77eb53d1dc 100644
--- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
@@ -854,6 +854,17 @@ usb2_phy1: phy at 4000 {
 				power-domains = <&pwrc PWRC_USB_ID>;
 			};
 
+			cpu_temp: temperature-sensor at 4c00 {
+				compatible = "amlogic,a1-cpu-thermal";
+				reg = <0x0 0x4c00 0x0 0x50>;
+				interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clkc_periphs CLKID_TS>;
+				assigned-clocks = <&clkc_periphs CLKID_TS>;
+				assigned-clock-rates = <500000>;
+				#thermal-sensor-cells = <0>;
+				amlogic,ao-secure = <&sec_AO>;
+			};
+
 			hwrng: rng at 5118 {
 				compatible = "amlogic,meson-rng";
 				reg = <0x0 0x5118 0x0 0x4>;
-- 
2.43.0




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