linux-kernel - Re: [PATCH 1/2] dt-bindings: Document the VC4 DSI module nodes.

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Date:   Fri, 27 Jan 2017 16:34:18 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Eric Anholt <eric@...olt.net>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Mark Rutland <mark.rutland@....com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-rpi-kernel@...ts.infradead.org,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Stephen Warren <swarren@...dotorg.org>,
        Lee Jones <lee@...nel.org>,
        "bcm-kernel-feedback-list@...adcom.com" 
        <bcm-kernel-feedback-list@...adcom.com>,
        linux-clk <linux-clk@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH 1/2] dt-bindings: Document the VC4 DSI module nodes.

Need to cc DT list if you want it in my queue.

On Mon, Jan 23, 2017 at 6:38 PM, Eric Anholt <eric@...olt.net> wrote:
> These are part of the vc4 display pipeline.
>
> Signed-off-by: Eric Anholt <eric@...olt.net>
> ---
>  .../devicetree/bindings/display/brcm,bcm-vc4.txt   | 35 ++++++++++++++++++++++
>  1 file changed, 35 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt b/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt
> index e2768703ac2b..34c7fddcea39 100644
> --- a/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt
> +++ b/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt
> @@ -56,6 +56,18 @@ Required properties for V3D:
>  - interrupts:  The interrupt number
>                   See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
>
> +Required properties for DSI:
> +- compatible:  Should be "brcm,bcm2835-dsi0" or "brcm,bcm2835-dsi1"

Are the blocks different?

> +- reg:         Physical base address and length of the DSI block's registers
> +- interrupts:  The interrupt number
> +                 See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
> +- clocks:      a) phy: The DSI PLL clock feeding the DSI analog PHY
> +               b) escape: The DSI ESC clock from CPRMAN
> +               c) pixel: The DSI pixel clock from CPRMAN
> +- clock-output-names:
> +               The 3 clocks output from the DSI analog PHY: dsi[01]_byte,
> +               dsi[01]_ddr2, and dsi[01]_ddr
> +
>  [1] Documentation/devicetree/bindings/media/video-interfaces.txt
>
>  Example:
> @@ -99,6 +111,29 @@ dpi: dpi@...08000 {
>         };
>  };
>
> +dsi1: dsi@...00000 {
> +       compatible = "brcm,bcm2835-dsi1";
> +       reg = <0x7e700000 0x8c>;
> +       interrupts = <2 12>;
> +       #address-cells = <1>;
> +       #size-cells = <0>;
> +       #clock-cells = <1>;
> +
> +       clocks = <&clocks BCM2835_PLLD_DSI1>,
> +                <&clocks BCM2835_CLOCK_DSI1E>,
> +                <&clocks BCM2835_CLOCK_DSI1P>;
> +       clock-names = "phy", "escape", "pixel";
> +
> +       clock-output-names = "dsi1_byte", "dsi1_ddr2", "dsi1_ddr";
> +
> +       pitouchscreen: panel@0 {
> +               compatible = "raspberrypi,touchscreen";
> +               reg = <0>;
> +
> +               <...>
> +       };
> +};
> +
>  vec: vec@...06000 {
>         compatible = "brcm,bcm2835-vec";
>         reg = <0x7e806000 0x1000>;
> --
> 2.11.0
>