arm64: dts: renesas: r9a09g087: Add TSU and thermal zones support

The Renesas RZ/N2H (R9A09G087) SoC includes a Temperature Sensor Unit
(TSU). The device provides real-time temperature measurements for
thermal management, utilizing a single dedicated channel for temperature
sensing.

The TSU loads calibration data via SMC SIP.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251126130356.2768625-10-cosmin-gabriel.tanislav.xa@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/arch/arm64/boot/dts/renesas/r9a09g087.dtsi b/arch/arm64/boot/dts/renesas/r9a09g087.dtsi
index a6a558e0ccd97b1e33148abedf6cc9cab5eca586..804970bf745fac5a5bcccba1e92815c1e218c1a3 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r9a09g087.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a09g087.dtsi
@@ -36,6 +36,7 @@
                        next-level-cache = <&L3_CA55>;
                        enable-method = "psci";
                        clocks = <&cpg CPG_CORE R9A09G087_CLK_CA55C0>;
+                       #cooling-cells = <2>;
                        operating-points-v2 = <&cluster0_opp>;
                };
 
@@ -46,6 +47,7 @@
                        next-level-cache = <&L3_CA55>;
                        enable-method = "psci";
                        clocks = <&cpg CPG_CORE R9A09G087_CLK_CA55C1>;
+                       #cooling-cells = <2>;
                        operating-points-v2 = <&cluster0_opp>;
                };
 
@@ -56,6 +58,7 @@
                        next-level-cache = <&L3_CA55>;
                        enable-method = "psci";
                        clocks = <&cpg CPG_CORE R9A09G087_CLK_CA55C2>;
+                       #cooling-cells = <2>;
                        operating-points-v2 = <&cluster0_opp>;
                };
 
@@ -66,6 +69,7 @@
                        next-level-cache = <&L3_CA55>;
                        enable-method = "psci";
                        clocks = <&cpg CPG_CORE R9A09G087_CLK_CA55C3>;
+                       #cooling-cells = <2>;
                        operating-points-v2 = <&cluster0_opp>;
                };
 
@@ -316,6 +320,17 @@
                        status = "disabled";
                };
 
+               tsu: thermal@80086000 {
+                       compatible = "renesas,r9a09g087-tsu", "renesas,r9a09g077-tsu";
+                       reg = <0 0x80086000 0 0x1000>;
+                       interrupts = <GIC_SPI 713 IRQ_TYPE_EDGE_RISING>,
+                                    <GIC_SPI 714 IRQ_TYPE_LEVEL_HIGH>;
+                       interrupt-names = "adi", "adcmpi";
+                       clocks = <&cpg CPG_MOD 307>;
+                       power-domains = <&cpg>;
+                       #thermal-sensor-cells = <0>;
+               };
+
                i2c0: i2c@80088000 {
                        compatible = "renesas,riic-r9a09g087", "renesas,riic-r9a09g077";
                        reg = <0 0x80088000 0 0x400>;
@@ -1197,6 +1212,37 @@
                snps,blen = <16 8 4 0 0 0 0>;
        };
 
+       thermal-zones {
+               cpu-thermal {
+                       polling-delay = <1000>;
+                       polling-delay-passive = <250>;
+                       thermal-sensors = <&tsu>;
+
+                       cooling-maps {
+                               map0 {
+                                       trip = <&target>;
+                                       cooling-device = <&cpu0 0 1>, <&cpu1 0 1>,
+                                                        <&cpu2 0 1>, <&cpu3 0 1>;
+                                       contribution = <1024>;
+                               };
+                       };
+
+                       trips {
+                               target: trip-point {
+                                       temperature = <95000>;
+                                       hysteresis = <1000>;
+                                       type = "passive";
+                               };
+
+                               sensor_crit: sensor-crit {
+                                       temperature = <120000>;
+                                       hysteresis = <1000>;
+                                       type = "critical";
+                               };
+                       };
+               };
+       };
+
        timer {
                compatible = "arm,armv8-timer";
                interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,