linux-kernel - Re: [PATCH RESEND] display: panel: Add KOE tx14d24vm1bpa display support (320x240)

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Message-ID: <20180519130533.2494bceb@jawa>
Date:   Sat, 19 May 2018 13:05:33 +0200
From:   Lukasz Majewski <lukma@...x.de>
To:     Thierry Reding <thierry.reding@...il.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        David Airlie <airlied@...ux.ie>, Rob Herring <robh@...nel.org>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND] display: panel: Add KOE tx14d24vm1bpa display
 support (320x240)

Hi Thierry,

> This commit adds support for KOE's 5.7" display.
> 

Thierry, shall I perform some more work on this code, or is it
eligible for applying to your tree?

Best regards,
Łukasz

> Signed-off-by: Lukasz Majewski <lukma@...x.de>
> ---
>  .../bindings/display/panel/koe,tx14d24vm1bpa.txt   | 42
> ++++++++++++++++++++++
> drivers/gpu/drm/panel/panel-simple.c               | 26
> ++++++++++++++ 2 files changed, 68 insertions(+) create mode 100644
> Documentation/devicetree/bindings/display/panel/koe,tx14d24vm1bpa.txt
> 
> diff --git
> a/Documentation/devicetree/bindings/display/panel/koe,tx14d24vm1bpa.txt
> b/Documentation/devicetree/bindings/display/panel/koe,tx14d24vm1bpa.txt
> new file mode 100644 index 000000000000..be7ac666807b --- /dev/null
> +++
> b/Documentation/devicetree/bindings/display/panel/koe,tx14d24vm1bpa.txt
> @@ -0,0 +1,42 @@ +Kaohsiung Opto-Electronics Inc. 5.7" QVGA (320 x
> 240) TFT LCD panel +
> +Required properties:
> +- compatible: should be "koe,tx14d24vm1bpa"
> +- backlight: phandle of the backlight device attached to the panel
> +- power-supply: single regulator to provide the supply voltage
> +
> +Required nodes:
> +- port: Parallel 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 iMX53 based board
> +
> +	lcd_panel: lcd-panel {
> +		compatible = "koe,tx14d24vm1bpa";
> +		backlight = <&backlight_lcd>;
> +		power-supply = <&reg_3v3>;
> +
> +		port {
> +			lcd_panel_in: endpoint {
> +				remote-endpoint = <&lcd_display_out>;
> +			};
> +		};
> +	};
> +
> +Then one needs to extend the dispX node:
> +
> +	lcd_display: disp1 {
> +
> +		port@1 {
> +			reg = <1>;
> +
> +			lcd_display_out: endpoint {
> +				remote-endpoint = <&lcd_panel_in>;
> +			};
> +		};
> +	};
> diff --git a/drivers/gpu/drm/panel/panel-simple.c
> b/drivers/gpu/drm/panel/panel-simple.c index
> d9984bdb5bb5..103b43ce7dee 100644 ---
> a/drivers/gpu/drm/panel/panel-simple.c +++
> b/drivers/gpu/drm/panel/panel-simple.c @@ -1268,6 +1268,29 @@ static
> const struct panel_desc innolux_zj070na_01p = { },
>  };
>  
> +static const struct display_timing koe_tx14d24vm1bpa_timing = {
> +	.pixelclock = { 5580000, 5850000, 6200000 },
> +	.hactive = { 320, 320, 320 },
> +	.hfront_porch = { 30, 30, 30 },
> +	.hback_porch = { 30, 30, 30 },
> +	.hsync_len = { 1, 5, 17 },
> +	.vactive = { 240, 240, 240 },
> +	.vfront_porch = { 6, 6, 6 },
> +	.vback_porch = { 5, 5, 5 },
> +	.vsync_len = { 1, 2, 11 },
> +	.flags = DISPLAY_FLAGS_DE_HIGH,
> +};
> +
> +static const struct panel_desc koe_tx14d24vm1bpa = {
> +	.timings = &koe_tx14d24vm1bpa_timing,
> +	.num_timings = 1,
> +	.bpc = 6,
> +	.size = {
> +		.width = 115,
> +		.height = 86,
> +	},
> +};
> +
>  static const struct display_timing koe_tx31d200vm0baa_timing = {
>  	.pixelclock = { 39600000, 43200000, 48000000 },
>  	.hactive = { 1280, 1280, 1280 },
> @@ -2204,6 +2227,9 @@ static const struct of_device_id
> platform_of_match[] = { .compatible = "innolux,zj070na-01p",
>  		.data = &innolux_zj070na_01p,
>  	}, {
> +		.compatible = "koe,tx14d24vm1bpa",
> +		.data = &koe_tx14d24vm1bpa,
> +	}, {
>  		.compatible = "koe,tx31d200vm0baa",
>  		.data = &koe_tx31d200vm0baa,
>  	}, {


Best regards,

Lukasz Majewski

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