Thread (16 messages) 16 messages, 4 authors, 2019-12-19

Re: [PATCH v7 6/7] arm64: dts: allwinner: h6: Add thermal sensor and thermal zones

From: Chen-Yu Tsai <hidden>
Date: 2019-12-19 03:00:05
Also in: linux-devicetree, linux-pm, lkml

On Thu, Dec 19, 2019 at 9:42 AM Vasily Khoruzhick [off-list ref] wrote:
On Wed, Dec 18, 2019 at 5:03 PM Ondřej Jirman [off-list ref] wrote:
quoted
On Wed, Dec 18, 2019 at 03:18:51PM -0800, Vasily Khoruzhick wrote:
quoted
On Tue, Dec 17, 2019 at 8:32 PM Chen-Yu Tsai [off-list ref] wrote:
quoted
On Wed, Dec 18, 2019 at 12:22 PM Vasily Khoruzhick [off-list ref] wrote:
quoted
From: Ondrej Jirman <redacted>

There are two sensors, one for CPU, one for GPU.

Signed-off-by: Ondrej Jirman <redacted>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 33 ++++++++++++++++++++
 1 file changed, 33 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index 29824081b43b..cdcb1a36301a 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -11,6 +11,7 @@
 #include <dt-bindings/reset/sun50i-h6-ccu.h>
 #include <dt-bindings/reset/sun50i-h6-r-ccu.h>
 #include <dt-bindings/reset/sun8i-de2.h>
+#include <dt-bindings/thermal/thermal.h>

 / {
        interrupt-parent = <&gic>;
@@ -233,6 +234,12 @@ dma: dma-controller@3002000 {
                sid: efuse@3006000 {
                        compatible = "allwinner,sun50i-h6-sid";
                        reg = <0x03006000 0x400>;
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       ths_calibration: thermal-sensor-calibration@14 {
+                               reg = <0x14 0x6>;
Nit: my preference is to use words as the smallest increment, so this
would have a size of 8 instead of 6. Same goes for the A64 dts.

AFAICT this doesn't impact the driver in any way.
H6 has only 2 sensors, so it should be 4. That's my overlook, I'll
change it to 4 for H6 and to 8 for A64.
No it's correct. There's 2 bytes reference temperature and 2x 2 byte
values for individual sensor calibration constants.
So it should be 8 if we round it up to word boundary?
That is correct.
quoted
regards,
        o.
quoted
quoted
ChenYu

quoted
+                       };
                };

                watchdog: watchdog@30090a0 {
@@ -856,5 +863,31 @@ r_i2c: i2c@7081400 {
                        #address-cells = <1>;
                        #size-cells = <0>;
                };
+
+               ths: thermal-sensor@5070400 {
+                       compatible = "allwinner,sun50i-h6-ths";
+                       reg = <0x05070400 0x100>;
+                       interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&ccu CLK_BUS_THS>;
+                       clock-names = "bus";
+                       resets = <&ccu RST_BUS_THS>;
+                       nvmem-cells = <&ths_calibration>;
+                       nvmem-cell-names = "calibration";
+                       #thermal-sensor-cells = <1>;
+               };
+       };
+
+       thermal-zones {
+               cpu-thermal {
+                       polling-delay-passive = <0>;
+                       polling-delay = <0>;
+                       thermal-sensors = <&ths 0>;
+               };
+
+               gpu-thermal {
+                       polling-delay-passive = <0>;
+                       polling-delay = <0>;
+                       thermal-sensors = <&ths 1>;
+               };
        };
 };
--
2.24.1
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