[PATCH v3 0/3] Add thermal sensors support for MT7981

[PATCH v3 0/3] Add thermal sensors support for MT7981

[Aleksander Jan Bajkowski]

This patch adds support for the temperature sensor in the MT7981 SoC.
This sensor is exactly the same as the one in the MT7986.

CHanges in v3:
 - added fallback in bindings

Changes in v2:
 - added fallback to an existing compatible string
 - removed second patch as obsolete

Aleksander Jan Bajkowski (3):
  dt-bindings: iio: adc: Add support for MT7981
  dt-bindings: thermal: mediatek: add falback compatible string for
    MT7981 and MT8516
  arm64: dts: mediatek: add thermal sensor support on mt7981

 .../iio/adc/mediatek,mt2701-auxadc.yaml       |  4 +++
 .../bindings/thermal/mediatek,thermal.yaml    | 27 ++++++++++------
 arch/arm64/boot/dts/mediatek/mt7981b.dtsi     | 31 ++++++++++++++++++-
 3 files changed, 51 insertions(+), 11 deletions(-)

-- 
2.39.5

[PATCH v3 1/3] dt-bindings: iio: adc: Add support for MT7981

[Aleksander Jan Bajkowski]

The temperature sensor in the MT7981 is same as in the MT7986.
Add compatible string for mt7981.

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
---
 .../devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml b/Documentation/devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml
index b489c984c1bb..14363389f30a 100644
--- a/Documentation/devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml
@@ -32,6 +32,10 @@ properties:
           - enum:
               - mediatek,mt7623-auxadc
           - const: mediatek,mt2701-auxadc
+      - items:
+          - enum:
+              - mediatek,mt7981-auxadc
+          - const: mediatek,mt7986-auxadc
       - items:
           - enum:
               - mediatek,mt6893-auxadc
-- 
2.39.5

Re: [PATCH v3 1/3] dt-bindings: iio: adc: Add support for MT7981

[Krzysztof Kozlowski]

On Wed, Jul 09, 2025 at 12:04:03AM +0200, Aleksander Jan Bajkowski wrote:
> The temperature sensor in the MT7981 is same as in the MT7986.
> Add compatible string for mt7981.
> 
> Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
> ---
>  .../devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml   | 4 ++++
>  1 file changed, 4 insertions(+)

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>


<form letter>
This is an automated instruction, just in case, because many review
tags are being ignored. If you know the process, just skip it entirely
(please do not feel offended by me posting it here - no bad intentions
intended, no patronizing, I just want to avoid wasted efforts). If you
do not know the process, here is a short explanation:

Please add Acked-by/Reviewed-by/Tested-by tags when posting new
versions of patchset, under or above your Signed-off-by tag, unless
patch changed significantly (e.g. new properties added to the DT
bindings). Tag is "received", when provided in a message replied to you
on the mailing list. Tools like b4 can help here ('b4 trailers -u ...').
However, there's no need to repost patches *only* to add the tags. The
upstream maintainer will do that for tags received on the version they
apply.

https://elixir.bootlin.com/linux/v6.15/source/Documentation/process/submitting-patches.rst#L591
</form letter>

Best regards,
Krzysztof

Re: [PATCH v3 1/3] dt-bindings: iio: adc: Add support for MT7981

[Jonathan Cameron]

On Wed, 9 Jul 2025 10:27:50 +0200
Krzysztof Kozlowski <krzk@kernel.org> wrote:

> On Wed, Jul 09, 2025 at 12:04:03AM +0200, Aleksander Jan Bajkowski wrote:
> > The temperature sensor in the MT7981 is same as in the MT7986.
> > Add compatible string for mt7981.
> > 
> > Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
> > ---
> >  .../devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml   | 4 ++++
> >  1 file changed, 4 insertions(+)  
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> 
Picked up this patch for the togreg branch of iio.git. Initially pushed out
as testing as other stuff on there needs some test build coverage.
> 
> <form letter>
> This is an automated instruction, just in case, because many review
> tags are being ignored. If you know the process, just skip it entirely
> (please do not feel offended by me posting it here - no bad intentions
> intended, no patronizing, I just want to avoid wasted efforts). If you
> do not know the process, here is a short explanation:
> 
> Please add Acked-by/Reviewed-by/Tested-by tags when posting new
> versions of patchset, under or above your Signed-off-by tag, unless
> patch changed significantly (e.g. new properties added to the DT
> bindings). Tag is "received", when provided in a message replied to you
> on the mailing list. Tools like b4 can help here ('b4 trailers -u ...').
> However, there's no need to repost patches *only* to add the tags. The
> upstream maintainer will do that for tags received on the version they
> apply.
> 
> https://elixir.bootlin.com/linux/v6.15/source/Documentation/process/submitting-patches.rst#L591
> </form letter>
> 
> Best regards,
> Krzysztof
> 

[PATCH v3 2/3] dt-bindings: thermal: mediatek: add falback compatible string for MT7981 and MT8516

[Aleksander Jan Bajkowski]

The ‘mediatek,mt7981-thermal’ and ‘mediatek,mt8516-thermal’ strings
aren't definied in the driver. Both should have fallback compatible
strings. This commit fixes this issue.

Fixes: 788494ba0999 ("dt-bindings: thermal: convert Mediatek Thermal to the json-schema")
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
---
 .../bindings/thermal/mediatek,thermal.yaml    | 27 ++++++++++++-------
 1 file changed, 17 insertions(+), 10 deletions(-)

diff --git a/Documentation/devicetree/bindings/thermal/mediatek,thermal.yaml b/Documentation/devicetree/bindings/thermal/mediatek,thermal.yaml
index d96a2e32bd8f..1c10d7adc77a 100644
--- a/Documentation/devicetree/bindings/thermal/mediatek,thermal.yaml
+++ b/Documentation/devicetree/bindings/thermal/mediatek,thermal.yaml
@@ -20,16 +20,23 @@ allOf:
 
 properties:
   compatible:
-    enum:
-      - mediatek,mt2701-thermal
-      - mediatek,mt2712-thermal
-      - mediatek,mt7622-thermal
-      - mediatek,mt7981-thermal
-      - mediatek,mt7986-thermal
-      - mediatek,mt8173-thermal
-      - mediatek,mt8183-thermal
-      - mediatek,mt8365-thermal
-      - mediatek,mt8516-thermal
+    oneOf:
+      - enum:
+          - mediatek,mt2701-thermal
+          - mediatek,mt2712-thermal
+          - mediatek,mt7622-thermal
+          - mediatek,mt7986-thermal
+          - mediatek,mt8173-thermal
+          - mediatek,mt8183-thermal
+          - mediatek,mt8365-thermal
+      - items:
+          - enum:
+              - mediatek,mt7981-thermal
+          - const: mediatek,mt7986-thermal
+      - items:
+          - enum:
+              - mediatek,mt8516-thermal
+          - const: mediatek,mt2701-thermal
 
   reg:
     maxItems: 1
-- 
2.39.5

Re: [PATCH v3 2/3] dt-bindings: thermal: mediatek: add falback compatible string for MT7981 and MT8516

[Krzysztof Kozlowski]

On Wed, Jul 09, 2025 at 12:04:04AM +0200, Aleksander Jan Bajkowski wrote:
> +      - items:
> +          - enum:
> +              - mediatek,mt7981-thermal
> +          - const: mediatek,mt7986-thermal
> +      - items:
> +          - enum:
> +              - mediatek,mt8516-thermal
> +          - const: mediatek,mt2701-thermal

Groups of lists usually we order by fallback, so first goes items with
mediatek,mt2701-thermal fallback and then items with
mediatek,mt7986-thermal fallback.

Anyway:
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

[PATCH v3 3/3] arm64: dts: mediatek: add thermal sensor support on mt7981

[Aleksander Jan Bajkowski]

The temperature sensor in the MT7981 is same as in the MT7986.

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
---
 arch/arm64/boot/dts/mediatek/mt7981b.dtsi | 31 ++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
index 5cbea9cd411f..277c11247c13 100644
--- a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
@@ -76,7 +76,7 @@ watchdog: watchdog@1001c000 {
 			#reset-cells = <1>;
 		};
 
-		clock-controller@1001e000 {
+		apmixedsys: clock-controller@1001e000 {
 			compatible = "mediatek,mt7981-apmixedsys";
 			reg = <0 0x1001e000 0 0x1000>;
 			#clock-cells = <1>;
@@ -184,6 +184,31 @@ spi@1100b000 {
 			status = "disabled";
 		};
 
+		thermal@1100c800 {
+			compatible = "mediatek,mt7981-thermal",
+				     "mediatek,mt7986-thermal";
+			reg = <0 0x1100c800 0 0x800>;
+			interrupts = <GIC_SPI 138 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&infracfg CLK_INFRA_THERM_CK>,
+				 <&infracfg CLK_INFRA_ADC_26M_CK>;
+			clock-names = "therm", "auxadc";
+			nvmem-cells = <&thermal_calibration>;
+			nvmem-cell-names = "calibration-data";
+			#thermal-sensor-cells = <1>;
+			mediatek,auxadc = <&auxadc>;
+			mediatek,apmixedsys = <&apmixedsys>;
+		};
+
+		auxadc: adc@1100d000 {
+			compatible = "mediatek,mt7981-auxadc",
+				     "mediatek,mt7986-auxadc";
+			reg = <0 0x1100d000 0 0x1000>;
+			clocks = <&infracfg CLK_INFRA_ADC_26M_CK>;
+			clock-names = "main";
+			#io-channel-cells = <1>;
+			status = "disabled";
+		};
+
 		pio: pinctrl@11d00000 {
 			compatible = "mediatek,mt7981-pinctrl";
 			reg = <0 0x11d00000 0 0x1000>,
@@ -211,6 +236,10 @@ efuse@11f20000 {
 			reg = <0 0x11f20000 0 0x1000>;
 			#address-cells = <1>;
 			#size-cells = <1>;
+
+			thermal_calibration: thermal-calib@274 {
+				reg = <0x274 0xc>;
+			};
 		};
 
 		clock-controller@15000000 {
-- 
2.39.5