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Date: Sun, 6 Oct 2019 08:12:50 +0800
From: Shawn Guo <shawnguo@...nel.org>
To: Yuantian Tang <andy.tang@....com>
Cc: leoyang.li@....com, robh+dt@...nel.org, mark.rutland@....com,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: lx2160a: add tmu device node
On Tue, Sep 03, 2019 at 11:31:32AM +0800, Yuantian Tang wrote:
> Add the TMU (Thermal Monitoring Unit) device node to enable
> TMU feature.
>
> Signed-off-by: Yuantian Tang <andy.tang@....com>
> ---
> .../arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 108 +++++++++++++++---
> 1 file changed, 92 insertions(+), 16 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> index 39d497df769e..e70ddd01cd84 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> @@ -6,6 +6,7 @@
>
> #include <dt-bindings/gpio/gpio.h>
> #include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/thermal/thermal.h>
>
> /memreserve/ 0x80000000 0x00010000;
>
> @@ -24,7 +25,7 @@
> #size-cells = <0>;
>
> // 8 clusters having 2 Cortex-A72 cores each
> - cpu@0 {
> + cpu0: cpu@0 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -38,9 +39,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster0_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@1 {
> + cpu1: cpu@1 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -54,9 +56,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster0_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@100 {
> + cpu100: cpu@100 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -70,9 +73,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster1_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@101 {
> + cpu101: cpu@101 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -86,9 +90,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster1_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@200 {
> + cpu200: cpu@200 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -102,9 +107,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster2_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@201 {
> + cpu201: cpu@201 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -118,9 +124,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster2_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@300 {
> + cpu300: cpu@300 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -134,9 +141,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster3_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@301 {
> + cpu301: cpu@301 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -150,9 +158,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster3_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@400 {
> + cpu400: cpu@400 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -166,9 +175,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster4_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@401 {
> + cpu401: cpu@401 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -182,9 +192,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster4_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@500 {
> + cpu500: cpu@500 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -198,9 +209,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster5_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@501 {
> + cpu501: cpu@501 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -214,9 +226,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster5_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@600 {
> + cpu600: cpu@600 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -230,9 +243,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster6_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@601 {
> + cpu601: cpu@601 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -246,9 +260,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster6_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@700 {
> + cpu700: cpu@700 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -262,9 +277,10 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster7_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> - cpu@701 {
> + cpu701: cpu@701 {
> device_type = "cpu";
> compatible = "arm,cortex-a72";
> enable-method = "psci";
> @@ -278,6 +294,7 @@
> i-cache-sets = <192>;
> next-level-cache = <&cluster7_l2>;
> cpu-idle-states = <&cpu_pw20>;
> + #cooling-cells = <2>;
> };
>
> cluster0_l2: l2-cache0 {
> @@ -422,6 +439,51 @@
> clock-output-names = "sysclk";
> };
>
> + thermal-zones {
> + core_thermal1: core-thermal1 {
> + polling-delay-passive = <1000>;
> + polling-delay = <5000>;
> + thermal-sensors = <&tmu 0>;
> +
> + trips {
> + core_cluster_alert: core-cluster-alert {
> + temperature = <85000>;
> + hysteresis = <2000>;
> + type = "passive";
> + };
> +
> + core_cluster_crit: core-cluster-crit {
> + temperature = <95000>;
> + hysteresis = <2000>;
> + type = "critical";
> + };
> + };
> +
> + cooling-maps {
> + map0 {
> + trip = <&core_cluster_alert>;
> + cooling-device =
> + <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu100 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu101 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu200 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu201 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu300 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu301 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu400 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu401 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu500 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu501 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu600 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu601 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu700 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&cpu701 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> + };
> + };
> + };
> + };
> +
> soc {
> compatible = "simple-bus";
> #address-cells = <2>;
> @@ -689,6 +751,20 @@
> status = "disabled";
> };
>
> + tmu: tmu@...0000 {
Keep the nodes sorted in unit-address.
> + compatible = "fsl,qoriq-tmu";
> + reg = <0x0 0x1f80000 0x0 0x10000>;
> + interrupts = <0 23 0x4>;
IRQ_TYPE_LEVEL_HIGH
> + fsl,tmu-range = <0x800000E6 0x8001017D>;
Use lowercase for hex values.
Shawn
> + fsl,tmu-calibration =
> + /* Calibration data group 1 */
> + <0x00000000 0x00000035
> + /* Calibration data group 2 */
> + 0x00010001 0x00000154>;
> + little-endian;
> + #thermal-sensor-cells = <1>;
> + };
> +
> uart0: serial@...0000 {
> compatible = "arm,sbsa-uart","arm,pl011";
> reg = <0x0 0x21c0000 0x0 0x1000>;
> --
> 2.17.1
>
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