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Message-ID: <Y3w7TLxwWKez8IVu@pendragon.ideasonboard.com>
Date: Tue, 22 Nov 2022 05:00:28 +0200
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
Cc: Geert Uytterhoeven <geert+renesas@...der.be>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Magnus Damm <magnus.damm@...il.com>,
Rob Herring <robh+dt@...nel.org>,
Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
Andrzej Hajda <andrzej.hajda@...el.com>,
Neil Armstrong <neil.armstrong@...aro.org>,
Robert Foss <robert.foss@...aro.org>,
Jonas Karlman <jonas@...boo.se>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
Subject: Re: [PATCH v1 4/8] arm64: dts: renesas: r8a779g0: Add display
related data
On Thu, Nov 17, 2022 at 03:03:39PM +0000, Kieran Bingham wrote:
> Quoting Tomi Valkeinen (2022-11-17 12:25:43)
> > From: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
> >
> > Add DT nodes for components needed to get the DSI output working:
> > - FCPv
> > - VSPd
> > - DU
> > - DSI
> >
> > Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
> > ---
> > arch/arm64/boot/dts/renesas/r8a779g0.dtsi | 129 ++++++++++++++++++++++
> > 1 file changed, 129 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
> > index 45d8d927ad26..31d4930c5adc 100644
> > --- a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
> > +++ b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
> > @@ -1207,6 +1207,135 @@ prr: chipid@...00044 {
> > compatible = "renesas,prr";
> > reg = <0 0xfff00044 0 4>;
> > };
>
> I think these nodes are supposed to be in sort order based on the
> register address in memory.
>
> Disregarding sort order, I'll review the node contents.
>
> I would probably s/data/nodes/ in $SUBJECT too.
>
> > +
> > + fcpvd0: fcp@...10000 {
> > + compatible = "renesas,fcpv";
> > + reg = <0 0xfea10000 0 0x200>;
> > + clocks = <&cpg CPG_MOD 508>;
> > + power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
> > + resets = <&cpg 508>;
> > + };
> > +
> > + fcpvd1: fcp@...11000 {
> > + compatible = "renesas,fcpv";
> > + reg = <0 0xfea11000 0 0x200>;
> > + clocks = <&cpg CPG_MOD 509>;
> > + power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
> > + resets = <&cpg 509>;
> > + };
>
> I'm intrigued at the length of 0x200 as I only see 3 registers up to
> 0x0018 ..
>
> But all existing platforms with fcpv* set 0x200 ... so lets cargo cult it up... :-)
>
> > +
> > + vspd0: vsp@...20000 {
> > + compatible = "renesas,vsp2";
> > + reg = <0 0xfea20000 0 0x5000>;
>
> """
> Below are the base addresses of each VSP unit. VSPX has 32Kbyte address
> space. VSPD has 28Kbyte address space.
> """
>
> Hrm : 28K is 0x7000
>
> RPf n OSD CLUT Table: H’4000 + H’0400*n to H’43fc + H’0400*n
>
> 0x43fc+(0x400*5)
> 22524 [0x57fc]
>
> So this needs to be /at least/ 0x6000 (Would 0x5800 be odd?) and perhaps as it clearly states
> 28k, we should just set it to 0x7000.
I'd go for 0x7000 indeed.
> > + interrupts = <GIC_SPI 546 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&cpg CPG_MOD 830>;
> > + power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
> > + resets = <&cpg 830>;
> > +
> > + renesas,fcp = <&fcpvd0>;
> > + };
> > +
> > + vspd1: vsp@...28000 {
> > + compatible = "renesas,vsp2";
> > + reg = <0 0xfea28000 0 0x5000>;
>
> Same here of course (reg = <0 0xfea28000 0 0x7000>)
>
> > + interrupts = <GIC_SPI 551 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&cpg CPG_MOD 831>;
> > + power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
> > + resets = <&cpg 831>;
> > +
> > + renesas,fcp = <&fcpvd1>;
> > + };
> > +
> > + du: display@...00000 {
> > + compatible = "renesas,du-r8a779g0";
> > + reg = <0 0xfeb00000 0 0x40000>;
> > + interrupts = <GIC_SPI 523 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 524 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&cpg CPG_MOD 411>;
> > + clock-names = "du.0";
> > + power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
> > + resets = <&cpg 411>;
> > + reset-names = "du.0";
> > + renesas,vsps = <&vspd0 0>, <&vspd1 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>;
> > + du_out_dsi1: endpoint {
> > + remote-endpoint = <&dsi1_in>;
> > + };
> > + };
> > + };
> > + };
> > +
> > + dsi0: dsi-encoder@...80000 {
> > + compatible = "renesas,r8a779g0-dsi-csi2-tx";
> > + reg = <0 0xfed80000 0 0x10000>;
> > + power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
> > + clocks = <&cpg CPG_MOD 415>,
> > + <&cpg CPG_CORE R8A779G0_CLK_DSIEXT>,
> > + <&cpg CPG_CORE R8A779G0_CLK_DSIREF>;
> > + clock-names = "fck", "dsi", "pll";
> > + resets = <&cpg 415>;
>
> blank line here to separate it, and highlight that it's disabled? (Like
> is done for DU?
>
> > + 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>;
> > + };
> > + };
> > + };
> > +
> > + dsi1: dsi-encoder@...90000 {
> > + compatible = "renesas,r8a779g0-dsi-csi2-tx";
> > + reg = <0 0xfed90000 0 0x10000>;
> > + power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
> > + clocks = <&cpg CPG_MOD 416>,
> > + <&cpg CPG_CORE R8A779G0_CLK_DSIEXT>,
> > + <&cpg CPG_CORE R8A779G0_CLK_DSIREF>;
> > + clock-names = "fck", "dsi", "pll";
> > + resets = <&cpg 416>;
>
> Same.
>
> With the VSPD register ranges increased accordingly:
>
> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
>
> > + status = "disabled";
> > +
> > + ports {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + port@0 {
> > + reg = <0>;
> > + dsi1_in: endpoint {
> > + remote-endpoint = <&du_out_dsi1>;
> > + };
> > + };
> > +
> > + port@1 {
> > + reg = <1>;
> > + };
> > + };
> > + };
> > +
Extra blank line.
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> > };
> >
> > timer {
--
Regards,
Laurent Pinchart
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