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[PATCH 8/9] arm64: dts: renesas: r8a779h0: Add display support

Tomi Valkeinen posted 9 patches 1 year, 2 months ago
There is a newer version of this series
[PATCH 8/9] arm64: dts: renesas: r8a779h0: Add display support
Posted by Tomi Valkeinen 1 year, 2 months ago 
From: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>

Add the device nodes for supporting DU and DSI.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
---
 arch/arm64/boot/dts/renesas/r8a779h0.dtsi | 77 +++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
index 12d8be3fd579..82df6ee98afb 100644
--- a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
@@ -1828,6 +1828,54 @@ csi41isp1: endpoint {
 			};
 		};
 
+		fcpvd0: fcp@fea10000 {
+			compatible = "renesas,fcpv";
+			reg = <0 0xfea10000 0 0x200>;
+			clocks = <&cpg CPG_MOD 508>;
+			power-domains = <&sysc R8A779H0_PD_C4>;
+			resets = <&cpg 508>;
+		};
+
+		vspd0: vsp@fea20000 {
+			compatible = "renesas,vsp2";
+			reg = <0 0xfea20000 0 0x8000>;
+			interrupts = <GIC_SPI 546 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 830>;
+			power-domains = <&sysc R8A779H0_PD_C4>;
+			resets = <&cpg 830>;
+			renesas,fcp = <&fcpvd0>;
+		};
+
+		du: display@feb00000 {
+			compatible = "renesas,du-r8a779h0";
+			reg = <0 0xfeb00000 0 0x40000>;
+			interrupts = <GIC_SPI 523 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 411>;
+			clock-names = "du.0";
+			power-domains = <&sysc R8A779H0_PD_C4>;
+			resets = <&cpg 411>;
+			reset-names = "du.0";
+			renesas,vsps = <&vspd0 0>;
+
+			status = "disabled";
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					du_out_dsi0: endpoint {
+						remote-endpoint = <&dsi0_in>;
+					};
+				};
+
+				port@1 {
+					reg = <1>;
+				};
+			};
+		};
+
 		isp0: isp@fed00000 {
 			compatible = "renesas,r8a779h0-isp",
 				     "renesas,rcar-gen4-isp";
@@ -1996,6 +2044,35 @@ isp1vin15: endpoint {
 			};
 		};
 
+		dsi0: dsi-encoder@fed80000 {
+			compatible = "renesas,r8a779h0-dsi-csi2-tx";
+			reg = <0 0xfed80000 0 0x10000>;
+			clocks = <&cpg CPG_MOD 415>,
+				 <&cpg CPG_CORE R8A779H0_CLK_DSIEXT>,
+				 <&cpg CPG_CORE R8A779H0_CLK_DSIREF>;
+			clock-names = "fck", "dsi", "pll";
+			power-domains = <&sysc R8A779H0_PD_C4>;
+			resets = <&cpg 415>;
+
+			status = "disabled";
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					dsi0_in: endpoint {
+						remote-endpoint = <&du_out_dsi0>;
+					};
+				};
+
+				port@1 {
+					reg = <1>;
+				};
+			};
+		};
+
 		prr: chipid@fff00044 {
 			compatible = "renesas,prr";
 			reg = <0 0xfff00044 0 4>;

-- 
2.43.0
Re: [PATCH 8/9] arm64: dts: renesas: r8a779h0: Add display support
Posted by Laurent Pinchart 1 year, 2 months ago 
Hi Tomi,

Thank you for the patch.

On Tue, Dec 03, 2024 at 10:01:42AM +0200, Tomi Valkeinen wrote:
> From: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
> 
> Add the device nodes for supporting DU and DSI.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
> ---
>  arch/arm64/boot/dts/renesas/r8a779h0.dtsi | 77 +++++++++++++++++++++++++++++++
>  1 file changed, 77 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
> index 12d8be3fd579..82df6ee98afb 100644
> --- a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
> @@ -1828,6 +1828,54 @@ csi41isp1: endpoint {
>  			};
>  		};
>  
> +		fcpvd0: fcp@fea10000 {
> +			compatible = "renesas,fcpv";
> +			reg = <0 0xfea10000 0 0x200>;
> +			clocks = <&cpg CPG_MOD 508>;
> +			power-domains = <&sysc R8A779H0_PD_C4>;
> +			resets = <&cpg 508>;
> +		};
> +
> +		vspd0: vsp@fea20000 {
> +			compatible = "renesas,vsp2";
> +			reg = <0 0xfea20000 0 0x8000>;
> +			interrupts = <GIC_SPI 546 IRQ_TYPE_LEVEL_HIGH>;

The documentation lists this interrupt as being LevelSensitive and
Negative. I wouldn't expect the VSP to work at all with a wrong polarity
in DT, so the level may get inverted somewhere.

> +			clocks = <&cpg CPG_MOD 830>;
> +			power-domains = <&sysc R8A779H0_PD_C4>;
> +			resets = <&cpg 830>;
> +			renesas,fcp = <&fcpvd0>;
> +		};
> +
> +		du: display@feb00000 {
> +			compatible = "renesas,du-r8a779h0";
> +			reg = <0 0xfeb00000 0 0x40000>;
> +			interrupts = <GIC_SPI 523 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&cpg CPG_MOD 411>;
> +			clock-names = "du.0";
> +			power-domains = <&sysc R8A779H0_PD_C4>;
> +			resets = <&cpg 411>;
> +			reset-names = "du.0";
> +			renesas,vsps = <&vspd0 0>;
> +
> +			status = "disabled";
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					reg = <0>;
> +					du_out_dsi0: endpoint {
> +						remote-endpoint = <&dsi0_in>;
> +					};
> +				};
> +
> +				port@1 {
> +					reg = <1>;
> +				};

On V4M the DU has a single channel, so there should be a single port.

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

> +			};
> +		};
> +
>  		isp0: isp@fed00000 {
>  			compatible = "renesas,r8a779h0-isp",
>  				     "renesas,rcar-gen4-isp";
> @@ -1996,6 +2044,35 @@ isp1vin15: endpoint {
>  			};
>  		};
>  
> +		dsi0: dsi-encoder@fed80000 {
> +			compatible = "renesas,r8a779h0-dsi-csi2-tx";
> +			reg = <0 0xfed80000 0 0x10000>;
> +			clocks = <&cpg CPG_MOD 415>,
> +				 <&cpg CPG_CORE R8A779H0_CLK_DSIEXT>,
> +				 <&cpg CPG_CORE R8A779H0_CLK_DSIREF>;
> +			clock-names = "fck", "dsi", "pll";
> +			power-domains = <&sysc R8A779H0_PD_C4>;
> +			resets = <&cpg 415>;
> +
> +			status = "disabled";
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					reg = <0>;
> +					dsi0_in: endpoint {
> +						remote-endpoint = <&du_out_dsi0>;
> +					};
> +				};
> +
> +				port@1 {
> +					reg = <1>;
> +				};
> +			};
> +		};
> +
>  		prr: chipid@fff00044 {
>  			compatible = "renesas,prr";
>  			reg = <0 0xfff00044 0 4>;

-- 
Regards,

Laurent Pinchart
Re: [PATCH 8/9] arm64: dts: renesas: r8a779h0: Add display support
Posted by Tomi Valkeinen 1 year, 2 months ago 
Hi,

On 03/12/2024 11:37, Laurent Pinchart wrote:
> Hi Tomi,
> 
> Thank you for the patch.
> 
> On Tue, Dec 03, 2024 at 10:01:42AM +0200, Tomi Valkeinen wrote:
>> From: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
>>
>> Add the device nodes for supporting DU and DSI.
>>
>> Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
>> ---
>>   arch/arm64/boot/dts/renesas/r8a779h0.dtsi | 77 +++++++++++++++++++++++++++++++
>>   1 file changed, 77 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
>> index 12d8be3fd579..82df6ee98afb 100644
>> --- a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
>> +++ b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
>> @@ -1828,6 +1828,54 @@ csi41isp1: endpoint {
>>   			};
>>   		};
>>   
>> +		fcpvd0: fcp@fea10000 {
>> +			compatible = "renesas,fcpv";
>> +			reg = <0 0xfea10000 0 0x200>;
>> +			clocks = <&cpg CPG_MOD 508>;
>> +			power-domains = <&sysc R8A779H0_PD_C4>;
>> +			resets = <&cpg 508>;
>> +		};
>> +
>> +		vspd0: vsp@fea20000 {
>> +			compatible = "renesas,vsp2";
>> +			reg = <0 0xfea20000 0 0x8000>;
>> +			interrupts = <GIC_SPI 546 IRQ_TYPE_LEVEL_HIGH>;
> 
> The documentation lists this interrupt as being LevelSensitive and
> Negative. I wouldn't expect the VSP to work at all with a wrong polarity
> in DT, so the level may get inverted somewhere.

Indeed... It's the same for V4H. And it also has IRQ_TYPE_LEVEL_HIGH in 
the dts. I tried changing it to LOW on V4H, but:

genirq: Setting trigger mode 8 for irq 91 failed
vsp1 fea20000.vsp: failed to request IRQ

I didn't dig further yet.

>> +			clocks = <&cpg CPG_MOD 830>;
>> +			power-domains = <&sysc R8A779H0_PD_C4>;
>> +			resets = <&cpg 830>;
>> +			renesas,fcp = <&fcpvd0>;
>> +		};
>> +
>> +		du: display@feb00000 {
>> +			compatible = "renesas,du-r8a779h0";
>> +			reg = <0 0xfeb00000 0 0x40000>;
>> +			interrupts = <GIC_SPI 523 IRQ_TYPE_LEVEL_HIGH>;
>> +			clocks = <&cpg CPG_MOD 411>;
>> +			clock-names = "du.0";
>> +			power-domains = <&sysc R8A779H0_PD_C4>;
>> +			resets = <&cpg 411>;
>> +			reset-names = "du.0";
>> +			renesas,vsps = <&vspd0 0>;
>> +
>> +			status = "disabled";
>> +
>> +			ports {
>> +				#address-cells = <1>;
>> +				#size-cells = <0>;
>> +
>> +				port@0 {
>> +					reg = <0>;
>> +					du_out_dsi0: endpoint {
>> +						remote-endpoint = <&dsi0_in>;
>> +					};
>> +				};
>> +
>> +				port@1 {
>> +					reg = <1>;
>> +				};
> 
> On V4M the DU has a single channel, so there should be a single port.

Yep, I'll drop.

  Tomi

> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> 
>> +			};
>> +		};
>> +
>>   		isp0: isp@fed00000 {
>>   			compatible = "renesas,r8a779h0-isp",
>>   				     "renesas,rcar-gen4-isp";
>> @@ -1996,6 +2044,35 @@ isp1vin15: endpoint {
>>   			};
>>   		};
>>   
>> +		dsi0: dsi-encoder@fed80000 {
>> +			compatible = "renesas,r8a779h0-dsi-csi2-tx";
>> +			reg = <0 0xfed80000 0 0x10000>;
>> +			clocks = <&cpg CPG_MOD 415>,
>> +				 <&cpg CPG_CORE R8A779H0_CLK_DSIEXT>,
>> +				 <&cpg CPG_CORE R8A779H0_CLK_DSIREF>;
>> +			clock-names = "fck", "dsi", "pll";
>> +			power-domains = <&sysc R8A779H0_PD_C4>;
>> +			resets = <&cpg 415>;
>> +
>> +			status = "disabled";
>> +
>> +			ports {
>> +				#address-cells = <1>;
>> +				#size-cells = <0>;
>> +
>> +				port@0 {
>> +					reg = <0>;
>> +					dsi0_in: endpoint {
>> +						remote-endpoint = <&du_out_dsi0>;
>> +					};
>> +				};
>> +
>> +				port@1 {
>> +					reg = <1>;
>> +				};
>> +			};
>> +		};
>> +
>>   		prr: chipid@fff00044 {
>>   			compatible = "renesas,prr";
>>   			reg = <0 0xfff00044 0 4>;
>
Re: [PATCH 8/9] arm64: dts: renesas: r8a779h0: Add display support
Posted by Geert Uytterhoeven 1 year, 2 months ago 
Hi Tomi,

On Wed, Dec 4, 2024 at 5:04 PM Tomi Valkeinen
<tomi.valkeinen@ideasonboard.com> wrote:
> On 03/12/2024 11:37, Laurent Pinchart wrote:
> > On Tue, Dec 03, 2024 at 10:01:42AM +0200, Tomi Valkeinen wrote:
> >> From: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
> >>
> >> Add the device nodes for supporting DU and DSI.
> >>
> >> Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
> >> ---
> >>   arch/arm64/boot/dts/renesas/r8a779h0.dtsi | 77 +++++++++++++++++++++++++++++++
> >>   1 file changed, 77 insertions(+)
> >>
> >> diff --git a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
> >> index 12d8be3fd579..82df6ee98afb 100644
> >> --- a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
> >> +++ b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
> >> @@ -1828,6 +1828,54 @@ csi41isp1: endpoint {
> >>                      };
> >>              };
> >>
> >> +            fcpvd0: fcp@fea10000 {
> >> +                    compatible = "renesas,fcpv";
> >> +                    reg = <0 0xfea10000 0 0x200>;
> >> +                    clocks = <&cpg CPG_MOD 508>;
> >> +                    power-domains = <&sysc R8A779H0_PD_C4>;
> >> +                    resets = <&cpg 508>;
> >> +            };
> >> +
> >> +            vspd0: vsp@fea20000 {
> >> +                    compatible = "renesas,vsp2";
> >> +                    reg = <0 0xfea20000 0 0x8000>;
> >> +                    interrupts = <GIC_SPI 546 IRQ_TYPE_LEVEL_HIGH>;
> >
> > The documentation lists this interrupt as being LevelSensitive and
> > Negative. I wouldn't expect the VSP to work at all with a wrong polarity
> > in DT, so the level may get inverted somewhere.
>
> Indeed... It's the same for V4H. And it also has IRQ_TYPE_LEVEL_HIGH in
> the dts. I tried changing it to LOW on V4H, but:
>
> genirq: Setting trigger mode 8 for irq 91 failed
> vsp1 fea20000.vsp: failed to request IRQ
>
> I didn't dig further yet.

Yeah, I don't think the GIC supports anything but IRQ_TYPE_LEVEL_HIGH.
Which brings us to the two ISP nodes on R-Car V4H and V4M, both using
IRQ_TYPE_LEVEL_LOW.
Niklas: looks like drivers/media/platform/renesas/rcar-isp.c doesn't
actually use the IRQ, so I guess that's how this could slip in?

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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