[PATCH 0/5] i2c: st: add power-domains on stm32mp2x and enable i2c-analog-filter

[PATCH 0/5] i2c: st: add power-domains on stm32mp2x and enable i2c-analog-filter

[Alain Volmat]

This series add the possibility to indicate a power-domains for an i2c
instance and set the related property for all i2c instances on
stm32mp2x.
It also enables by default the i2c-analog-filter on all instances on
stm32mp2x.

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
---
Alain Volmat (5):
      dt-bindings: i2c: st,stm32-i2c: add 'power-domains' property
      arm64: dts: st: add power-domains in all i2c of stm32mp251.dtsi
      arm64: dts: st: add power-domains in all i2c of stm32mp231.dtsi
      arm64: dts: st: enable i2c analog-filter in stm32mp251.dtsi
      arm64: dts: st: enable i2c analog-filter in stm32mp231.dtsi

 Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml |  3 +++
 arch/arm64/boot/dts/st/stm32mp231.dtsi                  |  8 ++++++++
 arch/arm64/boot/dts/st/stm32mp251.dtsi                  | 16 ++++++++++++++++
 3 files changed, 27 insertions(+)
---
base-commit: a6961e2ced5190c68acd78a7e372de07f565fcd6
change-id: 20251214-stm32-i2c-mp2x-dt-updates-e3747a0ab68c

Best regards,
-- 
Alain Volmat <alain.volmat@foss.st.com>

[PATCH 1/5] dt-bindings: i2c: st,stm32-i2c: add 'power-domains' property

[Alain Volmat]

STM32 I2C may be in a power domain which is the case for the STM32MP2x
based boards. Allow a single 'power-domains' entry for STM32 I2C.

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
---
 Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
index 457bb0702ed9..64aaa0dfa8fa 100644
--- a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
@@ -127,6 +127,9 @@ properties:
 
   wakeup-source: true
 
+  power-domains:
+    maxItems: 1
+
   access-controllers:
     minItems: 1
     maxItems: 2

-- 
2.34.1

[PATCH 2/5] arm64: dts: st: add power-domains in all i2c of stm32mp251.dtsi

[Alain Volmat]

Add the power-domains property in all i2c instances available
on the stm32mp251.dtsi

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
---
 arch/arm64/boot/dts/st/stm32mp251.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index a8e6e0f77b83..4d5222698a16 100644
--- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
@@ -780,6 +780,7 @@ i2c1: i2c@40120000 {
 				       <&hpdma 28 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 41>;
+				power-domains = <&CLUSTER_PD>;
 				status = "disabled";
 			};
 
@@ -796,6 +797,7 @@ i2c2: i2c@40130000 {
 				       <&hpdma 31 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 42>;
+				power-domains = <&CLUSTER_PD>;
 				status = "disabled";
 			};
 
@@ -812,6 +814,7 @@ i2c3: i2c@40140000 {
 				       <&hpdma 34 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 43>;
+				power-domains = <&CLUSTER_PD>;
 				status = "disabled";
 			};
 
@@ -828,6 +831,7 @@ i2c4: i2c@40150000 {
 				       <&hpdma 37 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 44>;
+				power-domains = <&CLUSTER_PD>;
 				status = "disabled";
 			};
 
@@ -844,6 +848,7 @@ i2c5: i2c@40160000 {
 				       <&hpdma 40 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 45>;
+				power-domains = <&CLUSTER_PD>;
 				status = "disabled";
 			};
 
@@ -860,6 +865,7 @@ i2c6: i2c@40170000 {
 				       <&hpdma 43 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 46>;
+				power-domains = <&CLUSTER_PD>;
 				status = "disabled";
 			};
 
@@ -876,6 +882,7 @@ i2c7: i2c@40180000 {
 				       <&hpdma 46 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 47>;
+				power-domains = <&CLUSTER_PD>;
 				status = "disabled";
 			};
 
@@ -1460,6 +1467,7 @@ i2c8: i2c@46040000 {
 				       <&hpdma 169 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 48>;
+				power-domains = <&CLUSTER_PD>;
 				status = "disabled";
 			};
 

-- 
2.34.1

[PATCH 3/5] arm64: dts: st: add power-domains in all i2c of stm32mp231.dtsi

[Alain Volmat]

Add the power-domains property in all i2c instances available
on the stm32mp231.dtsi

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
---
 arch/arm64/boot/dts/st/stm32mp231.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp231.dtsi b/arch/arm64/boot/dts/st/stm32mp231.dtsi
index 88e214d395ab..3d2a71e0341f 100644
--- a/arch/arm64/boot/dts/st/stm32mp231.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp231.dtsi
@@ -359,6 +359,7 @@ i2c1: i2c@40120000 {
 				       <&hpdma 28 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 41>;
+				power-domains = <&cluster_pd>;
 				status = "disabled";
 			};
 
@@ -375,6 +376,7 @@ i2c2: i2c@40130000 {
 				       <&hpdma 31 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 42>;
+				power-domains = <&cluster_pd>;
 				status = "disabled";
 			};
 
@@ -391,6 +393,7 @@ i2c7: i2c@40180000 {
 				       <&hpdma 46 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 47>;
+				power-domains = <&cluster_pd>;
 				status = "disabled";
 			};
 
@@ -664,6 +667,7 @@ i2c8: i2c@46040000 {
 				       <&hpdma 169 0x20 0x3021>;
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 48>;
+				power-domains = <&cluster_pd>;
 				status = "disabled";
 			};
 

-- 
2.34.1

[PATCH 4/5] arm64: dts: st: enable i2c analog-filter in stm32mp251.dtsi

[Alain Volmat]

By default enable the analog filter on all i2c instances on
the stm32mp25x series.

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
---
 arch/arm64/boot/dts/st/stm32mp251.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index 4d5222698a16..a334e92cac4a 100644
--- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
@@ -781,6 +781,7 @@ i2c1: i2c@40120000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 41>;
 				power-domains = <&CLUSTER_PD>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 
@@ -798,6 +799,7 @@ i2c2: i2c@40130000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 42>;
 				power-domains = <&CLUSTER_PD>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 
@@ -815,6 +817,7 @@ i2c3: i2c@40140000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 43>;
 				power-domains = <&CLUSTER_PD>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 
@@ -832,6 +835,7 @@ i2c4: i2c@40150000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 44>;
 				power-domains = <&CLUSTER_PD>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 
@@ -849,6 +853,7 @@ i2c5: i2c@40160000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 45>;
 				power-domains = <&CLUSTER_PD>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 
@@ -866,6 +871,7 @@ i2c6: i2c@40170000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 46>;
 				power-domains = <&CLUSTER_PD>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 
@@ -883,6 +889,7 @@ i2c7: i2c@40180000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 47>;
 				power-domains = <&CLUSTER_PD>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 
@@ -1468,6 +1475,7 @@ i2c8: i2c@46040000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 48>;
 				power-domains = <&CLUSTER_PD>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 

-- 
2.34.1

[PATCH 5/5] arm64: dts: st: enable i2c analog-filter in stm32mp231.dtsi

[Alain Volmat]

By default enable the analog filter on all i2c instances on
the stm32mp23x series.

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
---
 arch/arm64/boot/dts/st/stm32mp231.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp231.dtsi b/arch/arm64/boot/dts/st/stm32mp231.dtsi
index 3d2a71e0341f..65c0a0de4141 100644
--- a/arch/arm64/boot/dts/st/stm32mp231.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp231.dtsi
@@ -360,6 +360,7 @@ i2c1: i2c@40120000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 41>;
 				power-domains = <&cluster_pd>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 
@@ -377,6 +378,7 @@ i2c2: i2c@40130000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 42>;
 				power-domains = <&cluster_pd>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 
@@ -394,6 +396,7 @@ i2c7: i2c@40180000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 47>;
 				power-domains = <&cluster_pd>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 
@@ -668,6 +671,7 @@ i2c8: i2c@46040000 {
 				dma-names = "rx", "tx";
 				access-controllers = <&rifsc 48>;
 				power-domains = <&cluster_pd>;
+				i2c-analog-filter;
 				status = "disabled";
 			};
 

-- 
2.34.1

Re: [PATCH 1/5] dt-bindings: i2c: st,stm32-i2c: add 'power-domains' property

[Krzysztof Kozlowski]

On Mon, Dec 15, 2025 at 01:19:40PM +0100, Alain Volmat wrote:
> STM32 I2C may be in a power domain which is the case for the STM32MP2x
> based boards. Allow a single 'power-domains' entry for STM32 I2C.
> 
> Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
> ---
>  Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml | 3 +++
>  1 file changed, 3 insertions(+)

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof

Re: [PATCH 0/5] i2c: st: add power-domains on stm32mp2x and enable i2c-analog-filter

[Alexandre TORGUE]

Hi Alain

On 12/15/25 13:19, Alain Volmat wrote:
> This series add the possibility to indicate a power-domains for an i2c
> instance and set the related property for all i2c instances on
> stm32mp2x.
> It also enables by default the i2c-analog-filter on all instances on
> stm32mp2x.
> 
> Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
> ---
> Alain Volmat (5):
>        dt-bindings: i2c: st,stm32-i2c: add 'power-domains' property
>        arm64: dts: st: add power-domains in all i2c of stm32mp251.dtsi
>        arm64: dts: st: add power-domains in all i2c of stm32mp231.dtsi
>        arm64: dts: st: enable i2c analog-filter in stm32mp251.dtsi
>        arm64: dts: st: enable i2c analog-filter in stm32mp231.dtsi
> 
>   Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml |  3 +++
>   arch/arm64/boot/dts/st/stm32mp231.dtsi                  |  8 ++++++++
>   arch/arm64/boot/dts/st/stm32mp251.dtsi                  | 16 ++++++++++++++++
>   3 files changed, 27 insertions(+)
> ---
> base-commit: a6961e2ced5190c68acd78a7e372de07f565fcd6
> change-id: 20251214-stm32-i2c-mp2x-dt-updates-e3747a0ab68c
> 
> Best regards,

Series applied on stm32-next.

Thanks!
Alex

Re: [PATCH 1/5] dt-bindings: i2c: st,stm32-i2c: add 'power-domains' property

[Wolfram Sang]

On Mon, Dec 15, 2025 at 01:19:40PM +0100, Alain Volmat wrote:
> STM32 I2C may be in a power domain which is the case for the STM32MP2x
> based boards. Allow a single 'power-domains' entry for STM32 I2C.
> 
> Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>

Applied to for-next, thanks!