* [PATCH] arm64: dts: renesas: r8a77961: Add lvsd0 device node
@ 2021-12-13 21:18 Nikita Yushchenko
2021-12-14 13:35 ` Sergey Shtylyov
0 siblings, 1 reply; 6+ messages in thread
From: Nikita Yushchenko @ 2021-12-13 21:18 UTC (permalink / raw)
To: Geert Uytterhoeven, Magnus Damm, Rob Herring
Cc: linux-renesas-soc, devicetree, linux-kernel, Nikita Yushchenko
Add the missing lvds0 node for the R-Car M3-W+ SoC.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
---
arch/arm64/boot/dts/renesas/r8a77961.dtsi | 27 +++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a77961.dtsi b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
index 86d59e7e1a87..d324dfd0d1f7 100644
--- a/arch/arm64/boot/dts/renesas/r8a77961.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
@@ -2718,6 +2718,33 @@ du_out_hdmi0: endpoint {
port@2 {
reg = <2>;
du_out_lvds0: endpoint {
+ remote-endpoint = <&lvds0_in>;
+ };
+ };
+ };
+ };
+
+ lvds0: lvds@feb90000 {
+ compatible = "renesas,r8a7796-lvds";
+ reg = <0 0xfeb90000 0 0x14>;
+ clocks = <&cpg CPG_MOD 727>;
+ power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
+ resets = <&cpg 727>;
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ lvds0_in: endpoint {
+ remote-endpoint = <&du_out_lvds0>;
+ };
+ };
+ port@1 {
+ reg = <1>;
+ lvds0_out: endpoint {
};
};
};
--
2.30.2
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH] arm64: dts: renesas: r8a77961: Add lvsd0 device node
2021-12-13 21:18 [PATCH] arm64: dts: renesas: r8a77961: Add lvsd0 device node Nikita Yushchenko
@ 2021-12-14 13:35 ` Sergey Shtylyov
2021-12-14 14:06 ` [PATCH v2] arm64: dts: renesas: r8a77961: Add lvds0 " Nikita Yushchenko
0 siblings, 1 reply; 6+ messages in thread
From: Sergey Shtylyov @ 2021-12-14 13:35 UTC (permalink / raw)
To: Nikita Yushchenko, Geert Uytterhoeven, Magnus Damm, Rob Herring
Cc: linux-renesas-soc, devicetree, linux-kernel
Hello!
On 14.12.2021 0:18, Nikita Yushchenko wrote:
> Add the missing lvds0 node for the R-Car M3-W+ SoC.
Typo in the subject (lvsd0)...
> Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
[...]
MBR, Sergey
^ permalink raw reply [flat|nested] 6+ messages in thread* [PATCH v2] arm64: dts: renesas: r8a77961: Add lvds0 device node
2021-12-14 13:35 ` Sergey Shtylyov
@ 2021-12-14 14:06 ` Nikita Yushchenko
2021-12-20 14:21 ` Geert Uytterhoeven
0 siblings, 1 reply; 6+ messages in thread
From: Nikita Yushchenko @ 2021-12-14 14:06 UTC (permalink / raw)
To: Geert Uytterhoeven, Magnus Damm, Rob Herring, Sergey Shtylyov
Cc: linux-renesas-soc, devicetree, linux-kernel, Nikita Yushchenko
Add the missing lvds0 node for the R-Car M3-W+ SoC.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
---
Changes in v2:
- fix typo in subject
arch/arm64/boot/dts/renesas/r8a77961.dtsi | 27 +++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a77961.dtsi b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
index 86d59e7e1a87..d324dfd0d1f7 100644
--- a/arch/arm64/boot/dts/renesas/r8a77961.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
@@ -2718,6 +2718,33 @@ du_out_hdmi0: endpoint {
port@2 {
reg = <2>;
du_out_lvds0: endpoint {
+ remote-endpoint = <&lvds0_in>;
+ };
+ };
+ };
+ };
+
+ lvds0: lvds@feb90000 {
+ compatible = "renesas,r8a7796-lvds";
+ reg = <0 0xfeb90000 0 0x14>;
+ clocks = <&cpg CPG_MOD 727>;
+ power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
+ resets = <&cpg 727>;
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ lvds0_in: endpoint {
+ remote-endpoint = <&du_out_lvds0>;
+ };
+ };
+ port@1 {
+ reg = <1>;
+ lvds0_out: endpoint {
};
};
};
--
2.30.2
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH v2] arm64: dts: renesas: r8a77961: Add lvds0 device node
2021-12-14 14:06 ` [PATCH v2] arm64: dts: renesas: r8a77961: Add lvds0 " Nikita Yushchenko
@ 2021-12-20 14:21 ` Geert Uytterhoeven
2021-12-24 5:00 ` Nikita Yushchenko
0 siblings, 1 reply; 6+ messages in thread
From: Geert Uytterhoeven @ 2021-12-20 14:21 UTC (permalink / raw)
To: Nikita Yushchenko
Cc: Magnus Damm, Rob Herring, Sergey Shtylyov, Linux-Renesas,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Linux Kernel Mailing List
Hi Nikita,
On Tue, Dec 14, 2021 at 3:06 PM Nikita Yushchenko
<nikita.yoush@cogentembedded.com> wrote:
> Add the missing lvds0 node for the R-Car M3-W+ SoC.
>
> Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Thanks for your patch!
> --- a/arch/arm64/boot/dts/renesas/r8a77961.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
> @@ -2718,6 +2718,33 @@ du_out_hdmi0: endpoint {
> port@2 {
> reg = <2>;
> du_out_lvds0: endpoint {
> + remote-endpoint = <&lvds0_in>;
> + };
> + };
> + };
> + };
> +
> + lvds0: lvds@feb90000 {
> + compatible = "renesas,r8a7796-lvds";
This should be "renesas,r8a77961-lvds".
To handle that, both the DT bindings[1] and the driver[2] should
be updated.
[1] Documentation/devicetree/bindings/display/bridge/renesas,lvds.yaml
[2] drivers/gpu/drm/rcar-du/rcar_lvds.c
> + reg = <0 0xfeb90000 0 0x14>;
> + clocks = <&cpg CPG_MOD 727>;
> + power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
> + resets = <&cpg 727>;
> + status = "disabled";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + lvds0_in: endpoint {
> + remote-endpoint = <&du_out_lvds0>;
> + };
> + };
> + port@1 {
> + reg = <1>;
> + lvds0_out: endpoint {
> };
> };
> };
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
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH v2] arm64: dts: renesas: r8a77961: Add lvds0 device node
2021-12-20 14:21 ` Geert Uytterhoeven
@ 2021-12-24 5:00 ` Nikita Yushchenko
2021-12-24 9:56 ` Geert Uytterhoeven
0 siblings, 1 reply; 6+ messages in thread
From: Nikita Yushchenko @ 2021-12-24 5:00 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Magnus Damm, Rob Herring, Sergey Shtylyov, Linux-Renesas,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Linux Kernel Mailing List
>> + lvds0: lvds@feb90000 {
>> + compatible = "renesas,r8a7796-lvds";
>
> This should be "renesas,r8a77961-lvds".
> To handle that, both the DT bindings[1] and the driver[2] should
> be updated.
>
> [1] Documentation/devicetree/bindings/display/bridge/renesas,lvds.yaml
> [2] drivers/gpu/drm/rcar-du/rcar_lvds.c
Ok, will redo that way, although I don't really understand what for to have different compatible strings
for exactly same IP inside different chips.
Also note that arch/arm64/boot/dts/renesas/r8a77951.dtsi currently has renesas,r8a7795-lvds
Nikita
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH v2] arm64: dts: renesas: r8a77961: Add lvds0 device node
2021-12-24 5:00 ` Nikita Yushchenko
@ 2021-12-24 9:56 ` Geert Uytterhoeven
0 siblings, 0 replies; 6+ messages in thread
From: Geert Uytterhoeven @ 2021-12-24 9:56 UTC (permalink / raw)
To: Nikita Yushchenko
Cc: Magnus Damm, Rob Herring, Sergey Shtylyov, Linux-Renesas,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Linux Kernel Mailing List
Hi Nikita,
On Fri, Dec 24, 2021 at 6:00 AM Nikita Yushchenko
<nikita.yoush@cogentembedded.com> wrote:
> >> + lvds0: lvds@feb90000 {
> >> + compatible = "renesas,r8a7796-lvds";
> >
> > This should be "renesas,r8a77961-lvds".
> > To handle that, both the DT bindings[1] and the driver[2] should
> > be updated.
> >
> > [1] Documentation/devicetree/bindings/display/bridge/renesas,lvds.yaml
> > [2] drivers/gpu/drm/rcar-du/rcar_lvds.c
>
> Ok, will redo that way, although I don't really understand what for to have different compatible strings
Thank you!
> for exactly same IP inside different chips.
Ca. 30% of the "presumed identical" IP blocks in R-Car Gen3 SoCs
turned out not to be that identical...
> Also note that arch/arm64/boot/dts/renesas/r8a77951.dtsi currently has renesas,r8a7795-lvds
That was an early judgment error, which we regret making.
Initially, R-Car H3 ES2.0 (r8a77951) was assumed to be a slightly
improved variant of R-Car H3 ES1.x (r8a77950), while it turned out
to be a completely different SoC.
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
^ permalink raw reply [flat|nested] 6+ messages in thread
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2021-12-13 21:18 [PATCH] arm64: dts: renesas: r8a77961: Add lvsd0 device node Nikita Yushchenko
2021-12-14 13:35 ` Sergey Shtylyov
2021-12-14 14:06 ` [PATCH v2] arm64: dts: renesas: r8a77961: Add lvds0 " Nikita Yushchenko
2021-12-20 14:21 ` Geert Uytterhoeven
2021-12-24 5:00 ` Nikita Yushchenko
2021-12-24 9:56 ` Geert Uytterhoeven
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