[PATCH 0/5] Add RZ/G2UL CRU and CSI support

[PATCH 0/5] Add RZ/G2UL CRU and CSI support

[Biju Das]

This patch series aims to enable CSI/CRU interface found on RZ/G2UL
SMARC EVK using DT overlay.

Biju Das (5):
  media: dt-bindings: renesas,rzg2l-csi2: Document Renesas RZ/G2UL CSI-2
    block
  media: dt-bindings: renesas,rzg2l-cru: Document Renesas RZ/G2UL CRU
    block
  arm64: dts: renesas: r9a07g043u: Add CSI and CRU nodes
  arm64: dts: renesas: rzg2ul-smarc: Enable CRU, CSI support
  arm64: dts: renesas: r9a07g043u11-smarc-cru-csi-ov5645: Reduce I2C
    frequency

 .../bindings/media/renesas,rzg2l-cru.yaml     | 43 ++++++++++--
 .../bindings/media/renesas,rzg2l-csi2.yaml    |  1 +
 arch/arm64/boot/dts/renesas/Makefile          |  2 +
 arch/arm64/boot/dts/renesas/r9a07g043u.dtsi   | 69 +++++++++++++++++++
 .../r9a07g043u11-smarc-cru-csi-ov5645.dtso    | 25 +++++++
 5 files changed, 136 insertions(+), 4 deletions(-)
 create mode 100644 arch/arm64/boot/dts/renesas/r9a07g043u11-smarc-cru-csi-ov5645.dtso

-- 
2.25.1

[PATCH 1/5] media: dt-bindings: renesas,rzg2l-csi2: Document Renesas RZ/G2UL CSI-2 block

[Biju Das]

Document the CSI-2 block which is part of CRU found in Renesas RZ/G2UL
SoC.

The CSI-2 block on the RZ/G2UL SoC is identical to one found on the
RZ/G2L SoC.

No driver changes are required as generic compatible string
"renesas,rzg2l-csi2" will be used as a fallback on RZ/G2UL SoC.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml b/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
index 67eea2ac1d22..7faa12fecd5b 100644
--- a/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
+++ b/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
@@ -19,6 +19,7 @@ properties:
   compatible:
     items:
       - enum:
+          - renesas,r9a07g043-csi2       # RZ/G2UL
           - renesas,r9a07g044-csi2       # RZ/G2{L,LC}
           - renesas,r9a07g054-csi2       # RZ/V2L
       - const: renesas,rzg2l-csi2
-- 
2.25.1

Re: [PATCH 1/5] media: dt-bindings: renesas,rzg2l-csi2: Document Renesas RZ/G2UL CSI-2 block

[Conor Dooley]

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On Tue, Jan 23, 2024 at 12:17:16PM +0000, Biju Das wrote:
> Document the CSI-2 block which is part of CRU found in Renesas RZ/G2UL
> SoC.
> 
> The CSI-2 block on the RZ/G2UL SoC is identical to one found on the
> RZ/G2L SoC.
> 

> No driver changes are required as generic compatible string
> "renesas,rzg2l-csi2" will be used as a fallback on RZ/G2UL SoC.

Not super relevant to the bindings commit tbh.

> 
> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>

Acked-by: Conor Dooley <conor.dooley@microchip.com>

Cheers,
Conor.

> ---
>  Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml b/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> index 67eea2ac1d22..7faa12fecd5b 100644
> --- a/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> +++ b/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> @@ -19,6 +19,7 @@ properties:
>    compatible:
>      items:
>        - enum:
> +          - renesas,r9a07g043-csi2       # RZ/G2UL
>            - renesas,r9a07g044-csi2       # RZ/G2{L,LC}
>            - renesas,r9a07g054-csi2       # RZ/V2L
>        - const: renesas,rzg2l-csi2
> -- 
> 2.25.1
> 

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RE: [PATCH 1/5] media: dt-bindings: renesas,rzg2l-csi2: Document Renesas RZ/G2UL CSI-2 block

[Biju Das]

Hi Conor Dooley,

Thanks for the feedback.

> -----Original Message-----
> From: Conor Dooley <conor@kernel.org>
> Sent: Wednesday, January 24, 2024 5:49 PM
> Subject: Re: [PATCH 1/5] media: dt-bindings: renesas,rzg2l-csi2: Document
> Renesas RZ/G2UL CSI-2 block
> 
> On Tue, Jan 23, 2024 at 12:17:16PM +0000, Biju Das wrote:
> > Document the CSI-2 block which is part of CRU found in Renesas RZ/G2UL
> > SoC.
> >
> > The CSI-2 block on the RZ/G2UL SoC is identical to one found on the
> > RZ/G2L SoC.
> >
> 
> > No driver changes are required as generic compatible string
> > "renesas,rzg2l-csi2" will be used as a fallback on RZ/G2UL SoC.
> 
> Not super relevant to the bindings commit tbh.

I agree driver doesn't have anything to do with bindings other than using
the fallback compatible. From bindings anyway one can get fallback
compatible details for a device. So strictly speaking it is not required.
I will remove this in next version, if there is no objection.

Cheers,
Biju

> 
> >
> > Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
> 
> Acked-by: Conor Dooley <conor.dooley@microchip.com>
> 
> Cheers,
> Conor.
> 
> > ---
> >  Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git
> > a/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> > b/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> > index 67eea2ac1d22..7faa12fecd5b 100644
> > --- a/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> > +++ b/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> > @@ -19,6 +19,7 @@ properties:
> >    compatible:
> >      items:
> >        - enum:
> > +          - renesas,r9a07g043-csi2       # RZ/G2UL
> >            - renesas,r9a07g044-csi2       # RZ/G2{L,LC}
> >            - renesas,r9a07g054-csi2       # RZ/V2L
> >        - const: renesas,rzg2l-csi2
> > --
> > 2.25.1
> >

[PATCH 2/5] media: dt-bindings: renesas,rzg2l-cru: Document Renesas RZ/G2UL CRU block

[Biju Das]

Document the CRU IP found in Renesas RZ/G2UL SoC.

The CRU block on the RZ/G2UL SoC is identical to one found on the
RZ/G2L SoC, but it does not support parallel input.

No driver changes are required as generic compatible string
"renesas,rzg2l-cru" will be used as a fallback on RZ/G2UL SoC.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 .../bindings/media/renesas,rzg2l-cru.yaml     | 43 +++++++++++++++++--
 1 file changed, 39 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml b/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
index 1e72b8808d24..7015a01fc1bc 100644
--- a/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
+++ b/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
@@ -19,6 +19,7 @@ properties:
   compatible:
     items:
       - enum:
+          - renesas,r9a07g043-cru       # RZ/G2UL
           - renesas,r9a07g044-cru       # RZ/G2{L,LC}
           - renesas,r9a07g054-cru       # RZ/V2L
       - const: renesas,rzg2l-cru
@@ -87,10 +88,6 @@ properties:
           Input port node, describing the Image Processing module connected to the
           CSI-2 receiver.
 
-    required:
-      - port@0
-      - port@1
-
 required:
   - compatible
   - reg
@@ -102,6 +99,44 @@ required:
   - reset-names
   - power-domains
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,r9a07g044-cru
+              - renesas,r9a07g054-cru
+    then:
+      properties:
+        ports:
+          properties:
+            port@0:
+              description: Parallel input
+            port@1:
+              description: CSI
+
+          required:
+            - port@0
+            - port@1
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,r9a07g043-cru
+    then:
+      properties:
+        ports:
+          properties:
+            port@0: false
+            port@1:
+              description: CSI-2
+
+          required:
+            - port@1
+
 additionalProperties: false
 
 examples:
-- 
2.25.1

Re: [PATCH 2/5] media: dt-bindings: renesas,rzg2l-cru: Document Renesas RZ/G2UL CRU block

[Conor Dooley]

[-- Attachment #1: Type: text/plain, Size: 2893 bytes --]

On Tue, Jan 23, 2024 at 12:17:17PM +0000, Biju Das wrote:
> Document the CRU IP found in Renesas RZ/G2UL SoC.
> 
> The CRU block on the RZ/G2UL SoC is identical to one found on the
> RZ/G2L SoC, but it does not support parallel input.
> 
> No driver changes are required as generic compatible string
> "renesas,rzg2l-cru" will be used as a fallback on RZ/G2UL SoC.
> 
> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
> ---
>  .../bindings/media/renesas,rzg2l-cru.yaml     | 43 +++++++++++++++++--
>  1 file changed, 39 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml b/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
> index 1e72b8808d24..7015a01fc1bc 100644
> --- a/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
> +++ b/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
> @@ -19,6 +19,7 @@ properties:
>    compatible:
>      items:
>        - enum:
> +          - renesas,r9a07g043-cru       # RZ/G2UL
>            - renesas,r9a07g044-cru       # RZ/G2{L,LC}
>            - renesas,r9a07g054-cru       # RZ/V2L
>        - const: renesas,rzg2l-cru
> @@ -87,10 +88,6 @@ properties:
>            Input port node, describing the Image Processing module connected to the
>            CSI-2 receiver.
>  
> -    required:
> -      - port@0
> -      - port@1
> -
>  required:
>    - compatible
>    - reg
> @@ -102,6 +99,44 @@ required:
>    - reset-names
>    - power-domains
>  
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,r9a07g044-cru
> +              - renesas,r9a07g054-cru
> +    then:
> +      properties:
> +        ports:
> +          properties:
> +            port@0:
> +              description: Parallel input
> +            port@1:
> +              description: CSI
> +
> +          required:
> +            - port@0
> +            - port@1
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,r9a07g043-cru
> +    then:
> +      properties:
> +        ports:
> +          properties:
> +            port@0: false
> +            port@1:
> +              description: CSI-2

The description in the existing binding says that port @ 1 is CSI-2
already - but this patch seems to imply that it is only CSI-2 for the 43
model. I don't know the media stuff all that well, but is the port
actually CSI-2 on all 3 devices?

If so, I would drop the description stuff from here and just use the
if/else stuff to restrict the ports, rather than try to re-describe
them.

Cheers,
Conor.

> +
> +          required:
> +            - port@1
> +
>  additionalProperties: false
>  
>  examples:
> -- 
> 2.25.1
> 
> 

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RE: [PATCH 2/5] media: dt-bindings: renesas,rzg2l-cru: Document Renesas RZ/G2UL CRU block

[Biju Das]

Hi Conor Dooley,

Thanks for the feedback.

> -----Original Message-----
> From: Conor Dooley <conor@kernel.org>
> Sent: Wednesday, January 24, 2024 5:48 PM
> Subject: Re: [PATCH 2/5] media: dt-bindings: renesas,rzg2l-cru: Document
> Renesas RZ/G2UL CRU block
> 
> On Tue, Jan 23, 2024 at 12:17:17PM +0000, Biju Das wrote:
> > Document the CRU IP found in Renesas RZ/G2UL SoC.
> >
> > The CRU block on the RZ/G2UL SoC is identical to one found on the
> > RZ/G2L SoC, but it does not support parallel input.
> >
> > No driver changes are required as generic compatible string
> > "renesas,rzg2l-cru" will be used as a fallback on RZ/G2UL SoC.
> >
> > Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
> > ---
> >  .../bindings/media/renesas,rzg2l-cru.yaml     | 43 +++++++++++++++++--
> >  1 file changed, 39 insertions(+), 4 deletions(-)
> >
> > diff --git
> > a/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
> > b/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
> > index 1e72b8808d24..7015a01fc1bc 100644
> > --- a/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
> > +++ b/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
> > @@ -19,6 +19,7 @@ properties:
> >    compatible:
> >      items:
> >        - enum:
> > +          - renesas,r9a07g043-cru       # RZ/G2UL
> >            - renesas,r9a07g044-cru       # RZ/G2{L,LC}
> >            - renesas,r9a07g054-cru       # RZ/V2L
> >        - const: renesas,rzg2l-cru
> > @@ -87,10 +88,6 @@ properties:
> >            Input port node, describing the Image Processing module
> connected to the
> >            CSI-2 receiver.
> >
> > -    required:
> > -      - port@0
> > -      - port@1
> > -
> >  required:
> >    - compatible
> >    - reg
> > @@ -102,6 +99,44 @@ required:
> >    - reset-names
> >    - power-domains
> >
> > +allOf:
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,r9a07g044-cru
> > +              - renesas,r9a07g054-cru
> > +    then:
> > +      properties:
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: Parallel input
> > +            port@1:
> > +              description: CSI
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,r9a07g043-cru
> > +    then:
> > +      properties:
> > +        ports:
> > +          properties:
> > +            port@0: false
> > +            port@1:
> > +              description: CSI-2
> 
> The description in the existing binding says that port @ 1 is CSI-2
> already - but this patch seems to imply that it is only CSI-2 for the 43
> model. I don't know the media stuff all that well, but is the port
> actually CSI-2 on all 3 devices?

RZ/G2{L,LC} abd RZ/V2L has 2 ports one is parallel and other one is CSI
Where as RZ/G2UL has only 1 port (CSI).

As you said, it correct CSI-2 present on all 3 devices.

> 
> If so, I would drop the description stuff from here and just use the
> if/else stuff to restrict the ports, rather than try to re-describe them.

Agreed. Will fix this in next version along with fixing commit description
for removing driver changes.

Cheers,
Biju

[PATCH 3/5] arm64: dts: renesas: r9a07g043u: Add CSI and CRU nodes

[Biju Das]

Add CSI and CRU nodes r9a07g043 (RZ/G2UL) SoC DTSI.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 arch/arm64/boot/dts/renesas/r9a07g043u.dtsi | 69 +++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a07g043u.dtsi b/arch/arm64/boot/dts/renesas/r9a07g043u.dtsi
index 2ab231572d95..01d08ebb4a78 100644
--- a/arch/arm64/boot/dts/renesas/r9a07g043u.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a07g043u.dtsi
@@ -61,6 +61,75 @@ &pinctrl {
 &soc {
 	interrupt-parent = <&gic>;
 
+	cru: video@10830000 {
+		compatible = "renesas,r9a07g043-cru", "renesas,rzg2l-cru";
+		reg = <0 0x10830000 0 0x400>;
+		clocks = <&cpg CPG_MOD R9A07G043_CRU_VCLK>,
+			 <&cpg CPG_MOD R9A07G043_CRU_PCLK>,
+			 <&cpg CPG_MOD R9A07G043_CRU_ACLK>;
+		clock-names = "video", "apb", "axi";
+		interrupts = <SOC_PERIPHERAL_IRQ(167) IRQ_TYPE_LEVEL_HIGH>,
+			     <SOC_PERIPHERAL_IRQ(168) IRQ_TYPE_LEVEL_HIGH>,
+			     <SOC_PERIPHERAL_IRQ(169) IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "image_conv", "image_conv_err", "axi_mst_err";
+		resets = <&cpg R9A07G043_CRU_PRESETN>,
+			 <&cpg R9A07G043_CRU_ARESETN>;
+		reset-names = "presetn", "aresetn";
+		power-domains = <&cpg>;
+		status = "disabled";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				reg = <1>;
+				crucsi2: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&csi2cru>;
+				};
+			};
+		};
+	};
+
+	csi2: csi2@10830400 {
+		compatible = "renesas,r9a07g043-csi2", "renesas,rzg2l-csi2";
+		reg = <0 0x10830400 0 0xfc00>;
+		interrupts = <SOC_PERIPHERAL_IRQ(166) IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cpg CPG_MOD R9A07G043_CRU_SYSCLK>,
+			 <&cpg CPG_MOD R9A07G043_CRU_VCLK>,
+			 <&cpg CPG_MOD R9A07G043_CRU_PCLK>;
+		clock-names = "system", "video", "apb";
+		resets = <&cpg R9A07G043_CRU_PRESETN>,
+			 <&cpg R9A07G043_CRU_CMN_RSTB>;
+		reset-names = "presetn", "cmn-rstb";
+		power-domains = <&cpg>;
+		status = "disabled";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+			};
+
+			port@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <1>;
+
+				csi2cru: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&crucsi2>;
+				};
+			};
+		};
+	};
+
 	irqc: interrupt-controller@110a0000 {
 		compatible = "renesas,r9a07g043u-irqc",
 			     "renesas,rzg2l-irqc";
-- 
2.25.1

[PATCH 4/5] arm64: dts: renesas: rzg2ul-smarc: Enable CRU, CSI support

[Biju Das]

Enable CRU, CSI on RZ/G2UL SMARC EVK and tie the CSI to the OV5645 sensor
using Device Tree overlay.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 arch/arm64/boot/dts/renesas/Makefile          |  2 ++
 .../r9a07g043u11-smarc-cru-csi-ov5645.dtso    | 21 +++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r9a07g043u11-smarc-cru-csi-ov5645.dtso

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 8ea68d582710..f46d6f0b26ab 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -104,6 +104,8 @@ dtb-$(CONFIG_ARCH_R8A77965) += r8a779m5-salvator-xs-panel-aa104xd12.dtb
 
 dtb-$(CONFIG_ARCH_R9A07G043) += r9a07g043u11-smarc.dtb
 dtb-$(CONFIG_ARCH_R9A07G043) += r9a07g043-smarc-pmod.dtbo
+r9a07g043u11-smarc-cru-csi-ov5645-dtbs := r9a07g043u11-smarc.dtb r9a07g043u11-smarc-cru-csi-ov5645.dtbo
+dtb-$(CONFIG_ARCH_R9A07G043) += r9a07g043u11-smarc-cru-csi-ov5645.dtb
 r9a07g043u11-smarc-pmod-dtbs := r9a07g043u11-smarc.dtb r9a07g043-smarc-pmod.dtbo
 dtb-$(CONFIG_ARCH_R9A07G043) += r9a07g043u11-smarc-pmod.dtb
 
diff --git a/arch/arm64/boot/dts/renesas/r9a07g043u11-smarc-cru-csi-ov5645.dtso b/arch/arm64/boot/dts/renesas/r9a07g043u11-smarc-cru-csi-ov5645.dtso
new file mode 100644
index 000000000000..b41bb4b31a26
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a07g043u11-smarc-cru-csi-ov5645.dtso
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree overlay for the RZ/G2UL SMARC EVK with OV5645 camera
+ * connected to CSI and CRU enabled.
+ *
+ * Copyright (C) 2024 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+#define OV5645_PARENT_I2C i2c0
+#include "rz-smarc-cru-csi-ov5645.dtsi"
+
+&ov5645 {
+	enable-gpios = <&pinctrl RZG2L_GPIO(4, 4) GPIO_ACTIVE_HIGH>;
+	reset-gpios = <&pinctrl RZG2L_GPIO(0, 1) GPIO_ACTIVE_LOW>;
+};
-- 
2.25.1

[PATCH 5/5] arm64: dts: renesas: r9a07g043u11-smarc-cru-csi-ov5645: Reduce I2C frequency

[Biju Das]

Reduce i2c freq from 400->100 kHz on RZ/G2UL SMARC EVK as the captured
image is not proper with the sensor configuration over I2C.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 .../boot/dts/renesas/r9a07g043u11-smarc-cru-csi-ov5645.dtso   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a07g043u11-smarc-cru-csi-ov5645.dtso b/arch/arm64/boot/dts/renesas/r9a07g043u11-smarc-cru-csi-ov5645.dtso
index b41bb4b31a26..bb769c0f3ca5 100644
--- a/arch/arm64/boot/dts/renesas/r9a07g043u11-smarc-cru-csi-ov5645.dtso
+++ b/arch/arm64/boot/dts/renesas/r9a07g043u11-smarc-cru-csi-ov5645.dtso
@@ -19,3 +19,7 @@ &ov5645 {
 	enable-gpios = <&pinctrl RZG2L_GPIO(4, 4) GPIO_ACTIVE_HIGH>;
 	reset-gpios = <&pinctrl RZG2L_GPIO(0, 1) GPIO_ACTIVE_LOW>;
 };
+
+&i2c0 {
+	clock-frequency = <100000>;
+};
-- 
2.25.1