linux-kernel - Re: [PATCH 2/5] media: dt-bindings: Add bindings for TDA1997X

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Date:   Wed, 22 Nov 2017 09:36:06 +0200
From:   Sakari Ailus <sakari.ailus@....fi>
To:     Tim Harvey <tharvey@...eworks.com>
Cc:     linux-media@...r.kernel.org, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        shawnguo@...nel.org, Steve Longerbeam <slongerbeam@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Hans Verkuil <hansverk@...co.com>,
        Mauro Carvalho Chehab <mchehab@...pensource.com>,
        Rob Herring <robh@...nel.org>
Subject: Re: [PATCH 2/5] media: dt-bindings: Add bindings for TDA1997X

Hi Tim,

On Thu, Nov 09, 2017 at 10:45:33AM -0800, Tim Harvey wrote:
> Cc: Rob Herring <robh@...nel.org>
> Signed-off-by: Tim Harvey <tharvey@...eworks.com>
> ---
> v3:
>  - fix typo
> 
> v2:
>  - add vendor prefix and remove _ from vidout-portcfg
>  - remove _ from labels
>  - remove max-pixel-rate property
>  - describe and provide example for single output port
>  - update to new audio port bindings
> ---
>  .../devicetree/bindings/media/i2c/tda1997x.txt     | 179 +++++++++++++++++++++
>  1 file changed, 179 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/i2c/tda1997x.txt
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/tda1997x.txt b/Documentation/devicetree/bindings/media/i2c/tda1997x.txt
> new file mode 100644
> index 0000000..dd37f14
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/tda1997x.txt
> @@ -0,0 +1,179 @@
> +Device-Tree bindings for the NXP TDA1997x HDMI receiver
> +
> +The TDA19971/73 are HDMI video receivers.
> +
> +The TDA19971 Video port output pins can be used as follows:
> + - RGB 8bit per color (24 bits total): R[11:4] B[11:4] G[11:4]
> + - YUV444 8bit per color (24 bits total): Y[11:4] Cr[11:4] Cb[11:4]
> + - YUV422 semi-planar 8bit per component (16 bits total): Y[11:4] CbCr[11:4]
> + - YUV422 semi-planar 10bit per component (20 bits total): Y[11:2] CbCr[11:2]
> + - YUV422 semi-planar 12bit per component (24 bits total): - Y[11:0] CbCr[11:0]
> + - YUV422 BT656 8bit per component (8 bits total): YCbCr[11:4] (2-cycles)
> + - YUV422 BT656 10bit per component (10 bits total): YCbCr[11:2] (2-cycles)
> + - YUV422 BT656 12bit per component (12 bits total): YCbCr[11:0] (2-cycles)
> +
> +The TDA19973 Video port output pins can be used as follows:
> + - RGB 12bit per color (36 bits total): R[11:0] B[11:0] G[11:0]
> + - YUV444 12bit per color (36 bits total): Y[11:0] Cb[11:0] Cr[11:0]
> + - YUV422 semi-planar 12bit per component (24 bits total): Y[11:0] CbCr[11:0]
> + - YUV422 BT656 12bit per component (12 bits total): YCbCr[11:0] (2-cycles)
> +
> +The Video port output pins are mapped via 4-bit 'pin groups' allowing
> +for a variety of connection possibilities including swapping pin order within
> +pin groups. The video_portcfg device-tree property consists of register mapping
> +pairs which map a chip-specific VP output register to a 4-bit pin group. If
> +the pin group needs to be bit-swapped you can use the *_S pin-group defines.
> +
> +Required Properties:
> + - compatible          :
> +  - "nxp,tda19971" for the TDA19971
> +  - "nxp,tda19973" for the TDA19973
> + - reg                 : I2C slave address
> + - interrupts          : The interrupt number
> + - DOVDD-supply        : Digital I/O supply
> + - DVDD-supply         : Digital Core supply
> + - AVDD-supply         : Analog supply
> + - nxp,vidout-portcfg  : array of pairs mapping VP output pins to pin groups.
> +
> +Optional Properties:
> + - nxp,audout-format   : DAI bus format: "i2s" or "spdif".
> + - nxp,audout-width    : width of audio output data bus (1-4).
> + - nxp,audout-layout   : data layout (0=AP0 used, 1=AP0/AP1/AP2/AP3 used).
> + - nxp,audout-mclk-fs  : Multiplication factor between stream rate and codec
> +                         mclk.
> +
> +The device node must contain one 'port' child node for its digital output
> +video port, in accordance with the video interface bindings defined in
> +Documentation/devicetree/bindings/media/video-interfaces.txt.

Could you add that this port has one endpoint node as well? (Unless you
support multiple, that is.)

> +
> +Optional Endpoint Properties:
> +  The following three properties are defined in video-interfaces.txt and
> +  are valid for source endpoints only:

Transmitters? Don't you have an endpoint only in the port representing the
transmitter?

> +  - hsync-active: Horizontal synchronization polarity. Defaults to active high.
> +  - vsync-active: Vertical synchronization polarity. Defaults to active high.
> +  - data-active: Data polarity. Defaults to active high.
> +
> +Examples:
> + - VP[15:0] connected to IMX6 CSI_DATA[19:4] for 16bit YUV422
> +   16bit I2S layout0 with a 128*fs clock (A_WS, AP0, A_CLK pins)
> +	hdmi-receiver@48 {
> +		compatible = "nxp,tda19971";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_tda1997x>;
> +		reg = <0x48>;
> +		interrupt-parent = <&gpio1>;
> +		interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
> +		DOVDD-supply = <&reg_3p3v>;
> +		AVDD-supply = <&reg_1p8v>;
> +		DVDD-supply = <&reg_1p8v>;
> +		/* audio */
> +		#sound-dai-cells = <0>;
> +		nxp,audout-format = "i2s";
> +		nxp,audout-layout = <0>;
> +		nxp,audout-width = <16>;
> +		nxp,audout-mclk-fs = <128>;
> +		/*
> +		 * The 8bpp YUV422 semi-planar mode outputs CbCr[11:4]
> +		 * and Y[11:4] across 16bits in the same pixclk cycle.
> +		 */
> +		nxp,vidout-portcfg =
> +			/* Y[11:8]<->VP[15:12]<->CSI_DATA[19:16] */
> +			< TDA1997X_VP24_V15_12 TDA1997X_G_Y_11_8 >,
> +			/* Y[7:4]<->VP[11:08]<->CSI_DATA[15:12] */
> +			< TDA1997X_VP24_V11_08 TDA1997X_G_Y_7_4 >,
> +			/* CbCc[11:8]<->VP[07:04]<->CSI_DATA[11:8] */
> +			< TDA1997X_VP24_V07_04 TDA1997X_R_CR_CBCR_11_8 >,
> +			/* CbCr[7:4]<->VP[03:00]<->CSI_DATA[7:4] */
> +			< TDA1997X_VP24_V03_00 TDA1997X_R_CR_CBCR_7_4 >;
> +
> +		port {
> +			tda1997x_to_ipu1_csi0_mux: endpoint {
> +				remote-endpoint = <&ipu1_csi0_mux_from_parallel_sensor>;
> +				bus-width = <16>;
> +				hsync-active = <1>;
> +				vsync-active = <1>;
> +				data-active = <1>;
> +			};
> +		};
> +	};
> + - VP[15:8] connected to IMX6 CSI_DATA[19:12] for 8bit BT656
> +   16bit I2S layout0 with a 128*fs clock (A_WS, AP0, A_CLK pins)
> +	hdmi-receiver@48 {
> +		compatible = "nxp,tda19971";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_tda1997x>;
> +		reg = <0x48>;
> +		interrupt-parent = <&gpio1>;
> +		interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
> +		DOVDD-supply = <&reg_3p3v>;
> +		AVDD-supply = <&reg_1p8v>;
> +		DVDD-supply = <&reg_1p8v>;
> +		/* audio */
> +		#sound-dai-cells = <0>;
> +		nxp,audout-format = "i2s";
> +		nxp,audout-layout = <0>;
> +		nxp,audout-width = <16>;
> +		nxp,audout-mclk-fs = <128>;
> +		/*
> +		 * The 8bpp YUV422 semi-planar mode outputs CbCr[11:4]
> +		 * and Y[11:4] across 16bits in the same pixclk cycle.
> +		 */
> +		nxp,vidout-portcfg =
> +			/* Y[11:8]<->VP[15:12]<->CSI_DATA[19:16] */
> +			< TDA1997X_VP24_V15_12 TDA1997X_G_Y_11_8 >,
> +			/* Y[7:4]<->VP[11:08]<->CSI_DATA[15:12] */
> +			< TDA1997X_VP24_V11_08 TDA1997X_G_Y_7_4 >,
> +			/* CbCc[11:8]<->VP[07:04]<->CSI_DATA[11:8] */
> +			< TDA1997X_VP24_V07_04 TDA1997X_R_CR_CBCR_11_8 >,
> +			/* CbCr[7:4]<->VP[03:00]<->CSI_DATA[7:4] */
> +			< TDA1997X_VP24_V03_00 TDA1997X_R_CR_CBCR_7_4 >;
> +
> +		port {
> +			tda1997x_to_ipu1_csi0_mux: endpoint {
> +				remote-endpoint = <&ipu1_csi0_mux_from_parallel_sensor>;
> +				bus-width = <16>;
> +				hsync-active = <1>;
> +				vsync-active = <1>;
> +				data-active = <1>;
> +			};
> +		};
> +	};
> + - VP[15:8] connected to IMX6 CSI_DATA[19:12] for 8bit BT656
> +   16bit I2S layout0 with a 128*fs clock (A_WS, AP0, A_CLK pins)
> +	hdmi-receiver@48 {
> +		compatible = "nxp,tda19971";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_tda1997x>;
> +		reg = <0x48>;
> +		interrupt-parent = <&gpio1>;
> +		interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
> +		DOVDD-supply = <&reg_3p3v>;
> +		AVDD-supply = <&reg_1p8v>;
> +		DVDD-supply = <&reg_1p8v>;
> +		/* audio */
> +		#sound-dai-cells = <0>;
> +		nxp,audout-format = "i2s";
> +		nxp,audout-layout = <0>;
> +		nxp,audout-width = <16>;
> +		nxp,audout-mclk-fs = <128>;
> +		/*
> +		 * The 8bpp BT656 mode outputs YCbCr[11:4] across 8bits over
> +		 * 2 pixclk cycles.
> +		 */
> +		nxp,vidout-portcfg =
> +			/* YCbCr[11:8]<->VP[15:12]<->CSI_DATA[19:16] */
> +			< TDA1997X_VP24_V15_12 TDA1997X_R_CR_CBCR_11_8 >,
> +			/* YCbCr[7:4]<->VP[11:08]<->CSI_DATA[15:12] */
> +			< TDA1997X_VP24_V11_08 TDA1997X_R_CR_CBCR_7_4 >,
> +
> +		port {
> +			tda1997x_to_ipu1_csi0_mux: endpoint {
> +				remote-endpoint = <&ipu1_csi0_mux_from_parallel_sensor>;
> +				bus-width = <16>;
> +				hsync-active = <1>;
> +				vsync-active = <1>;
> +				data-active = <1>;
> +			};
> +		};
> +	};
> +
> -- 
> 2.7.4
> 

-- 
Sakari Ailus
e-mail: sakari.ailus@....fi