diff mbox

[1/2] arm64: dts: renesas: r8a77980: add CAN-FD support

Message ID f07c00b3-228c-e0d2-f7fe-38b8e9f25a4d@cogentembedded.com (mailing list archive)
State Accepted
Commit f38c41727211f2cdd9bb6f2999d46daafeacc5aa
Delegated to: Simon Horman
Headers show

Commit Message

Sergei Shtylyov April 27, 2018, 7:12 p.m. UTC
Define the generic R8A77980 part of the CAN-FD device node.

Based on the original (and large) patch by Vladimir Barinov.

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

---
 arch/arm64/boot/dts/renesas/r8a77980.dtsi |   31 ++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

Comments

Simon Horman May 2, 2018, 9:36 a.m. UTC | #1
On Fri, Apr 27, 2018 at 10:12:51PM +0300, Sergei Shtylyov wrote:
> Define the generic R8A77980 part of the CAN-FD device node.
> 
> Based on the original (and large) patch by Vladimir Barinov.
> 
> Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

Thanks applied with the minor update noted below.

> 
> ---
>  arch/arm64/boot/dts/renesas/r8a77980.dtsi |   31 ++++++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> Index: renesas/arch/arm64/boot/dts/renesas/r8a77980.dtsi
> ===================================================================
> --- renesas.orig/arch/arm64/boot/dts/renesas/r8a77980.dtsi
> +++ renesas/arch/arm64/boot/dts/renesas/r8a77980.dtsi
> @@ -38,6 +38,13 @@
>  		};
>  	};
>  
> +	/* External CAN clock - to be overridden by boards that provide it */
> +	can_clk: can {
> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <0>;
> +	};
> +
>  	extal_clk: extal {
>  		compatible = "fixed-clock";
>  		#clock-cells = <0>;
> @@ -170,6 +177,30 @@
>  			status = "disabled";
>  		};
>  
> +		canfd: can@e66c0000 {
> +			compatible = "renesas,r8a77980-canfd",
> +				     "renesas,rcar-gen3-canfd";
> +			reg = <0 0xe66c0000 0 0x8000>;
> +			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&cpg CPG_MOD 914>,
> +			         <&cpg CPG_CORE R8A77980_CLK_CANFD>,

checkpatch tells me that line above uses spaces for indentation where
a tab could be used. I fixed that up when applying the patch.

> +				 <&can_clk>;

> +			clock-names = "fck", "canfd", "can_clk";
> +			assigned-clocks = <&cpg CPG_CORE R8A77980_CLK_CANFD>;
> +			assigned-clock-rates = <40000000>;
> +			power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;
> +			status = "disabled";
> +
> +			channel0 {
> +				status = "disabled";
> +			};
> +
> +			channel1 {
> +				status = "disabled";
> +			};
> +		};
> +
>  		avb: ethernet@e6800000 {
>  			compatible = "renesas,etheravb-r8a77980",
>  				     "renesas,etheravb-rcar-gen3";
>
Sergei Shtylyov May 2, 2018, 9:41 a.m. UTC | #2
Hello!

On 5/2/2018 12:36 PM, Simon Horman wrote:

>> Define the generic R8A77980 part of the CAN-FD device node.
>>
>> Based on the original (and large) patch by Vladimir Barinov.
>>
>> Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
>> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
> 
> Thanks applied with the minor update noted below.

    Thank you!

>> ---
>>   arch/arm64/boot/dts/renesas/r8a77980.dtsi |   31 ++++++++++++++++++++++++++++++
>>   1 file changed, 31 insertions(+)
>>
>> Index: renesas/arch/arm64/boot/dts/renesas/r8a77980.dtsi
>> ===================================================================
>> --- renesas.orig/arch/arm64/boot/dts/renesas/r8a77980.dtsi
>> +++ renesas/arch/arm64/boot/dts/renesas/r8a77980.dtsi
[...]
>> @@ -170,6 +177,30 @@
>>   			status = "disabled";
>>   		};
>>   
>> +		canfd: can@e66c0000 {
>> +			compatible = "renesas,r8a77980-canfd",
>> +				     "renesas,rcar-gen3-canfd";
>> +			reg = <0 0xe66c0000 0 0x8000>;
>> +			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
>> +				     <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
>> +			clocks = <&cpg CPG_MOD 914>,
>> +			         <&cpg CPG_CORE R8A77980_CLK_CANFD>,
> 
> checkpatch tells me that line above uses spaces for indentation where
> a tab could be used. I fixed that up when applying the patch.

    Hum, I thought I fixed that... :-/

MBR, Sergei
Geert Uytterhoeven May 4, 2018, 7:52 a.m. UTC | #3
Hi Sergei,

On Fri, Apr 27, 2018 at 9:12 PM, Sergei Shtylyov
<sergei.shtylyov@cogentembedded.com> wrote:
> Define the generic R8A77980 part of the CAN-FD device node.
>
> Based on the original (and large) patch by Vladimir Barinov.
>
> Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

Thanks for your patch!

> --- renesas.orig/arch/arm64/boot/dts/renesas/r8a77980.dtsi
> +++ renesas/arch/arm64/boot/dts/renesas/r8a77980.dtsi
=
> @@ -170,6 +177,30 @@
>                         status = "disabled";
>                 };
>
> +               canfd: can@e66c0000 {
> +                       compatible = "renesas,r8a77980-canfd",
> +                                    "renesas,rcar-gen3-canfd";
> +                       reg = <0 0xe66c0000 0 0x8000>;
> +                       interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
> +                       clocks = <&cpg CPG_MOD 914>,
> +                                <&cpg CPG_CORE R8A77980_CLK_CANFD>,
> +                                <&can_clk>;
> +                       clock-names = "fck", "canfd", "can_clk";
> +                       assigned-clocks = <&cpg CPG_CORE R8A77980_CLK_CANFD>;
> +                       assigned-clock-rates = <40000000>;
> +                       power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;

You forgot the resets property.

Gr{oetje,eeting}s,

                        Geert
Simon Horman May 9, 2018, 5:54 p.m. UTC | #4
On Fri, May 04, 2018 at 09:52:38AM +0200, Geert Uytterhoeven wrote:
> Hi Sergei,
> 
> On Fri, Apr 27, 2018 at 9:12 PM, Sergei Shtylyov
> <sergei.shtylyov@cogentembedded.com> wrote:
> > Define the generic R8A77980 part of the CAN-FD device node.
> >
> > Based on the original (and large) patch by Vladimir Barinov.
> >
> > Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
> > Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
> 
> Thanks for your patch!
> 
> > --- renesas.orig/arch/arm64/boot/dts/renesas/r8a77980.dtsi
> > +++ renesas/arch/arm64/boot/dts/renesas/r8a77980.dtsi
> =
> > @@ -170,6 +177,30 @@
> >                         status = "disabled";
> >                 };
> >
> > +               canfd: can@e66c0000 {
> > +                       compatible = "renesas,r8a77980-canfd",
> > +                                    "renesas,rcar-gen3-canfd";
> > +                       reg = <0 0xe66c0000 0 0x8000>;
> > +                       interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
> > +                                    <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
> > +                       clocks = <&cpg CPG_MOD 914>,
> > +                                <&cpg CPG_CORE R8A77980_CLK_CANFD>,
> > +                                <&can_clk>;
> > +                       clock-names = "fck", "canfd", "can_clk";
> > +                       assigned-clocks = <&cpg CPG_CORE R8A77980_CLK_CANFD>;
> > +                       assigned-clock-rates = <40000000>;
> > +                       power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;
> 
> You forgot the resets property.

Thanks, I have sent a follow-up patch.
diff mbox

Patch

Index: renesas/arch/arm64/boot/dts/renesas/r8a77980.dtsi
===================================================================
--- renesas.orig/arch/arm64/boot/dts/renesas/r8a77980.dtsi
+++ renesas/arch/arm64/boot/dts/renesas/r8a77980.dtsi
@@ -38,6 +38,13 @@ 
 		};
 	};
 
+	/* External CAN clock - to be overridden by boards that provide it */
+	can_clk: can {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <0>;
+	};
+
 	extal_clk: extal {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
@@ -170,6 +177,30 @@ 
 			status = "disabled";
 		};
 
+		canfd: can@e66c0000 {
+			compatible = "renesas,r8a77980-canfd",
+				     "renesas,rcar-gen3-canfd";
+			reg = <0 0xe66c0000 0 0x8000>;
+			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 914>,
+			         <&cpg CPG_CORE R8A77980_CLK_CANFD>,
+				 <&can_clk>;
+			clock-names = "fck", "canfd", "can_clk";
+			assigned-clocks = <&cpg CPG_CORE R8A77980_CLK_CANFD>;
+			assigned-clock-rates = <40000000>;
+			power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;
+			status = "disabled";
+
+			channel0 {
+				status = "disabled";
+			};
+
+			channel1 {
+				status = "disabled";
+			};
+		};
+
 		avb: ethernet@e6800000 {
 			compatible = "renesas,etheravb-r8a77980",
 				     "renesas,etheravb-rcar-gen3";