linux-kernel - Re: [PATCH v2 14/15] arm64: dts: allwinner: a64: Add DSI pipeline

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Message-ID: <20181024181048.w4iwebtac6wzmgt4@flea>
Date:   Wed, 24 Oct 2018 19:10:48 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Chen-Yu Tsai <wens@...e.org>, Icenowy Zheng <icenowy@...c.io>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Vasily Khoruzhick <anarsoul@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-clk@...r.kernel.org,
        Michael Trimarchi <michael@...rulasolutions.com>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com
Subject: Re: [PATCH v2 14/15] arm64: dts: allwinner: a64: Add DSI pipeline

On Tue, Oct 23, 2018 at 09:20:34PM +0530, Jagan Teki wrote:
> The A64 has a MIPI-DSI block which is similar to A31
> without mod clock.
> 
> So, add dsi node with A64 compatible, dphy node with
> A31 compatible and finally connect dsi to tcon0 to
> make proper DSI pipeline.
> 
> Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
> ---
> Changes for v2:
> - use A64 dphy compatible
> 
>  arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 45 +++++++++++++++++++
>  1 file changed, 45 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> index f3a66f888205..f82e6b165d57 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> @@ -320,6 +320,11 @@
>  					#address-cells = <1>;
>  					#size-cells = <0>;
>  					reg = <1>;
> +
> +					tcon0_out_dsi: endpoint@1 {
> +						reg = <1>;
> +						remote-endpoint = <&dsi_in_tcon0>;

You need to set the allwinner,channel property there.

> +					};
>  				};
>  			};
>  		};
> @@ -818,6 +823,46 @@
>  			#interrupt-cells = <3>;
>  		};
>  
> +
> +		dsi: dsi@...0000 {
> +			compatible = "allwinner,sun50i-a64-mipi-dsi";
> +			reg = <0x01ca0000 0x1000>;
> +			interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&ccu CLK_BUS_MIPI_DSI>;
> +			clock-names = "bus";
> +			resets = <&ccu RST_BUS_MIPI_DSI>;
> +			phys = <&dphy>;
> +			phy-names = "dphy";
> +			status = "disabled";
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +					reg = <0>;
> +
> +					dsi_in_tcon0: endpoint {
> +						remote-endpoint = <&tcon0_out_dsi>;
> +					};
> +				};
> +			};
> +		};
> +
> +		dphy: d-phy@...1000 {
> +			compatible = "allwinner,sun50i-a64-mipi-dphy",
> +				     "allwinner,sun6i-a31-mipi-dphy";
> +			reg = <0x01ca1000 0x1000>;
> +			clocks = <&ccu CLK_BUS_MIPI_DSI>,
> +				 <&ccu CLK_DSI_DPHY>;
> +			clock-names = "bus", "mod";
> +			resets = <&ccu RST_BUS_MIPI_DSI>;
> +			status = "disabled";
> +			#phy-cells = <0>;
> +		};
> +

You have to order the nodes per ascending physical address ordering.

Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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