linux-kernel - Re: [PATCH v3] drm: tilcdc: add a da850-specific compatible string

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Date:   Mon, 10 Oct 2016 09:54:08 +0300
From:   Jyri Sarha <jsarha@...com>
To:     Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        David Airlie <airlied@...ux.ie>,
        Kevin Hilman <khilman@...libre.com>,
        Michael Turquette <mturquette@...libre.com>,
        Sekhar Nori <nsekhar@...com>, Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Mark Rutland <mark.rutland@....com>
CC:     LKML <linux-kernel@...r.kernel.org>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>,
        linux-drm <dri-devel@...ts.freedesktop.org>,
        linux-devicetree <devicetree@...r.kernel.org>
Subject: Re: [PATCH v3] drm: tilcdc: add a da850-specific compatible string

On 10/03/16 18:45, Bartosz Golaszewski wrote:
> Due to some potential tweaks for the da850 LCDC (for example: the
> required memory bandwith settings) we need a separate compatible
> for the IP present on the da850 boards.
> 
> Suggested-by: Sekhar Nori <nsekhar@...com>
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>

Thanks,
I pick this up, but I won't send it for 4.9 any more. The LCDC rev1
support is not yet complete in 4.9 anyway.

BR,
Jyri

> ---
> v1 -> v2:
> - added the new compatible to the bindings documentation
> 
> v2 -> v3:
> - made the documentation more detailed
> 
>  Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt | 6 ++++--
>  drivers/gpu/drm/tilcdc/tilcdc_drv.c                         | 1 +
>  2 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt b/Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt
> index a83abd7..6fddb4f 100644
> --- a/Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt
> +++ b/Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt
> @@ -1,7 +1,9 @@
>  Device-Tree bindings for tilcdc DRM driver
>  
>  Required properties:
> - - compatible: value should be "ti,am33xx-tilcdc".
> + - compatible: value should be one of the following:
> +    - "ti,am33xx-tilcdc" for AM335x based boards
> +    - "ti,da850-tilcdc" for DA850/AM18x/OMAP-L138 based boards
>   - interrupts: the interrupt number
>   - reg: base address and size of the LCDC device
>  
> @@ -51,7 +53,7 @@ Optional nodes:
>  Example:
>  
>  	fb: fb@...0e000 {
> -		compatible = "ti,am33xx-tilcdc";
> +		compatible = "ti,am33xx-tilcdc", "ti,da850-tilcdc";
>  		reg = <0x4830e000 0x1000>;
>  		interrupt-parent = <&intc>;
>  		interrupts = <36>;
> diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
> index a694977..231f2c7 100644
> --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
> +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
> @@ -723,6 +723,7 @@ static int tilcdc_pdev_remove(struct platform_device *pdev)
>  
>  static struct of_device_id tilcdc_of_match[] = {
>  		{ .compatible = "ti,am33xx-tilcdc", },
> +		{ .compatible = "ti,da850-tilcdc", },
>  		{ },
>  };
>  MODULE_DEVICE_TABLE(of, tilcdc_of_match);
>