Re: [PATCH v2] display: panel: Add Tianma tm070rvhg71 display support (800x480)

[Thierry Reding]

On Tue, Nov 07, 2017 at 04:30:58PM +0100, Lukasz Majewski wrote:
> Signed-off-by: Lukasz Majewski <lukma@xxxxxxx>
> 
> ---
> Changes for v2:
> - Provide more detailed ./Documentation/devicetree/bindings/display/panel
>   entry to describe this panel device.
> ---
>  .../bindings/display/panel/tianma,tm070rvhg71.txt  | 29 ++++++++++++++++++++++
>  drivers/gpu/drm/panel/panel-simple.c               | 27 ++++++++++++++++++++
>  2 files changed, 56 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/tianma,tm070rvhg71.txt

I've applied this, though I had to make a few modifications. First, I
added a commit message. Commits should always have one.

Also, please send DT bindings and driver changes as separate patches in
the future.

Device tree bindings should have a subject prefixed with any of these:

	dt-bindings:
	dt-bindings: display:
	dt-bindings: display: panel:

Though the latter two are fairly long by themselves, so you don't have a
lot of room for the important bits.

Please also prefix the subject of panel driver patches with a:

	drm/panel:

Which makes it easier to identify relevant patches among loads and loads
of other email.

> 
> diff --git a/Documentation/devicetree/bindings/display/panel/tianma,tm070rvhg71.txt b/Documentation/devicetree/bindings/display/panel/tianma,tm070rvhg71.txt
> new file mode 100644
> index 000000000000..02562867444d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/tianma,tm070rvhg71.txt
> @@ -0,0 +1,29 @@
> +Tianma Micro-electronics TM070RVHG71 7.0" WXGA TFT LCD panel
> +
> +Required properties:
> +- compatible: should be "tianma,tm070rvhg71

Added a missing " at the end here.

> +- power-supply: single regulator to provide the supply voltage
> +- backlight: phandle of the backlight device attached to the panel
> +
> +Required nodes:
> +- port: LVDS port mapping to connect this display
> +
> +This panel needs single power supply voltage. Its backlight is conntrolled
> +via PWM signal.
> +
> +Example:
> +--------
> +
> +Example device-tree definition when connected to iMX6Q based board
> +
> +	panel: panel-lvds0 {
> +		compatible = "tianma,tm070rvhg71";
> +		backlight = <&backlight_lvds>;
> +		power-supply = <&reg_lvds>;
> +
> +		port {
> +			panel_in_lvds0: endpoint {
> +				remote-endpoint = <&lvds0_out>;
> +			};
> +		};
> +	};
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index 3d2cb8bc4d94..07188dc084df 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -1831,6 +1831,30 @@ static const struct panel_desc tianma_tm070jdhg30 = {
>  	.bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
>  };
>  
> +static const struct display_timing tianma_tm070rvhg71_timing = {
> +	.pixelclock = { 27700000, 29200000, 39600000 },
> +	.hactive = { 800, 800, 800 },
> +	.hfront_porch = { 12, 40, 212 },
> +	.hback_porch = { 88, 88, 88 },
> +	.hsync_len = { 1, 1, 40 },
> +	.vactive = { 480, 480, 480 },
> +	.vfront_porch = { 1, 13, 88 },
> +	.vback_porch = { 32, 32, 32 },
> +	.vsync_len = { 1, 1, 3 },
> +	.flags = DISPLAY_FLAGS_DE_HIGH,
> +};
> +
> +static const struct panel_desc tianma_tm070rvhg71 = {
> +	.timings = &tianma_tm070rvhg71_timing,
> +	.num_timings = 1,
> +	.bpc = 8,
> +	.size = {
> +		.width = 154,
> +		.height = 86,
> +	},
> +	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
> +};
> +
>  static const struct drm_display_mode tpk_f07a_0102_mode = {
>  	.clock = 33260,
>  	.hdisplay = 800,
> @@ -2113,6 +2137,9 @@ static const struct of_device_id platform_of_match[] = {
>  		.compatible = "tianma,tm070jdhg30",
>  		.data = &tianma_tm070jdhg30,
>  	}, {
> +		.compatible = "tianma,tm070rvhg71",
> +		.data = &tianma_tm070rvhg71,
> +	}, {
>  		.compatible = "tpk,f07a-0102",
>  		.data = &tpk_f07a_0102,
>  	}, {

Looks like these are actually sorted correctly in your patch. However,
when applying these got added after the Toshiba panel that was recently
added, so I resorted again.

Thierry

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