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

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Date: Thu, 28 Mar 2024 22:26:36 +0300
From: Dmitry Rokosov <ddrokosov@...utedevices.com>
To: <neil.armstrong@...aro.org>, <jbrunet@...libre.com>,
	<mturquette@...libre.com>, <khilman@...libre.com>,
	<martin.blumenstingl@...glemail.com>, <glaroque@...libre.com>,
	<rafael@...nel.org>, <daniel.lezcano@...aro.org>, <rui.zhang@...el.com>,
	<lukasz.luba@....com>, <robh+dt@...nel.org>,
	<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>
CC: <kernel@...utedevices.com>, <rockosov@...il.com>,
	<linux-amlogic@...ts.infradead.org>, <linux-pm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, Dmitry Rokosov
	<ddrokosov@...utedevices.com>
Subject: [PATCH v2 2/3] arm64: dts: amlogic: a1: introduce cpu temperature sensor

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@...utedevices.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@...0 {
 				power-domains = <&pwrc PWRC_USB_ID>;
 			};
 
+			cpu_temp: temperature-sensor@...0 {
+				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@...8 {
 				compatible = "amlogic,meson-rng";
 				reg = <0x0 0x5118 0x0 0x4>;
-- 
2.43.0