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SubjectRe: [PATCH v3 6/7] arm: dts: sun8i: a33: Add the DSI-related nodes
Hi,

On Thu, Mar 22, 2018 at 10:23:32AM +0800, Chen-Yu Tsai wrote:
> On Tue, Mar 6, 2018 at 9:56 PM, Maxime Ripard <maxime.ripard@bootlin.com> wrote:
> > From: Maxime Ripard <maxime.ripard@free-electrons.com>
> >
> > The A33 has a MIPI-DSI block, along with its D-PHY. Let's add it in order
> > to use it in the relevant boards.
> >
> > Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
> > ---
> > arch/arm/boot/dts/sun8i-a33.dtsi | 44 +++++++++++++++++++++++++++++++++-
> > 1 file changed, 44 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/sun8i-a33.dtsi b/arch/arm/boot/dts/sun8i-a33.dtsi
> > index 50eb84fa246a..94cfa7b1bbfa 100644
> > --- a/arch/arm/boot/dts/sun8i-a33.dtsi
> > +++ b/arch/arm/boot/dts/sun8i-a33.dtsi
> > @@ -236,6 +236,11 @@
> > #address-cells = <1>;
> > #size-cells = <0>;
> > reg = <1>;
> > +
> > + tcon0_out_dsi0: endpoint@1 {
> > + reg = <1>;
> > + remote-endpoint = <&dsi0_in_tcon0>;
> > + };
> > };
> > };
> > };
> > @@ -280,6 +285,45 @@
> > #io-channel-cells = <0>;
> > };
> >
> > + dsi0: dsi@1ca0000 {
>
> Nit: There's only one so you don't need the numbered suffix.

I'll fix it.

> Also, is "dsi" specific enough, or should we use "mipi-dsi"

If we were to be pedantic about it, that would even be MIPI-DSI2, but
I'm not sure it's worth it to be honest.

> > + compatible = "allwinner,sun6i-a31-mipi-dsi";
> > + reg = <0x01ca0000 0x1000>;
> > + interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&ccu CLK_BUS_MIPI_DSI>,
> > + <&ccu CLK_DSI_SCLK>;
> > + clock-names = "bus", "mod";
> > + resets = <&ccu RST_BUS_MIPI_DSI>;
> > + phys = <&dphy0>;
> > + phy-names = "dphy";
> > + status = "disabled";
> > +
> > + ports {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + port@0 {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + reg = <0>;
> > +
> > + dsi0_in_tcon0: endpoint {
> > + remote-endpoint = <&tcon0_out_dsi0>;
> > + };
> > + };
> > + };
> > + };
> > +
> > + dphy0: d-phy@1ca1000 {
>
> Same nit, and "dsi-phy" would be better.

D-PHY is one of the MIPI standards that can be used with DSI, but it
doesn't mean DSI-PHY. You also have C-PHY (that can be used with DSI
as well) and M-PHY (than can be used with UniPro and CSI3). So, no, it
really is a D-PHY controller :)

Maxime

--
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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