arm64: dts: imx8mp: add imx8mp-venice-gw74xx-rpidsi overlay for display

  Add support for the following Raspberry Pi displays:
 - DFROBOT DRF0678 7in 800x480 TFT DSI capacitive touch
 - DFROBOT DRF0550 5in 800x480 TFT DSI capacitive touch

Both have the following hardware:
 - FocalTech FT5406 10pt touch controller (with no interrupt)
 - Powertip PH800480T013-IDF02 compatible panel
 - Toshiba TC358762 compatible DSI to DBI bridge
 - ATTINY based regulator used for backlight controller and panel enable

Support is added via a device-tree overlay. The touch controller is not
yet supported as polling mode is needed.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
 arch/arm64/boot/dts/freescale/Makefile        |  2 +
 .../imx8mp-venice-gw74xx-rpidsi.dtso          | 86 +++++++++++++++++++
 2 files changed, 88 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx-rpidsi.dtso
  

On Tue, Jul 11, 2023 at 03:14:40PM -0700, Tim Harvey wrote:
> Add support for the following Raspberry Pi displays:
>  - DFROBOT DRF0678 7in 800x480 TFT DSI capacitive touch
>  - DFROBOT DRF0550 5in 800x480 TFT DSI capacitive touch
> 
> Both have the following hardware:
>  - FocalTech FT5406 10pt touch controller (with no interrupt)
>  - Powertip PH800480T013-IDF02 compatible panel
>  - Toshiba TC358762 compatible DSI to DBI bridge
>  - ATTINY based regulator used for backlight controller and panel enable
> 
> Support is added via a device-tree overlay. The touch controller is not
> yet supported as polling mode is needed.
> 
> Signed-off-by: Tim Harvey <tharvey@gateworks.com>
> ---
>  arch/arm64/boot/dts/freescale/Makefile        |  2 +
>  .../imx8mp-venice-gw74xx-rpidsi.dtso          | 86 +++++++++++++++++++
>  2 files changed, 88 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx-rpidsi.dtso
> 
> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
> index 454b07ed09fc..60a69e114442 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -156,6 +156,7 @@ imx8mm-venice-gw73xx-0x-rpidsi-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice
>  imx8mm-venice-gw73xx-0x-rs232-rts-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs232-rts.dtbo
>  imx8mm-venice-gw73xx-0x-rs422-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs422.dtbo
>  imx8mm-venice-gw73xx-0x-rs485-dtbs	:= imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs485.dtbo
> +imx8mp-venice-gw74xx-rpidsi-dtbs	:= imx8mp-venice-gw74xx.dtb imx8mp-venice-gw74xx-rpidsi.dtbo
>  
>  dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-imx219.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rpidsi.dtb
> @@ -167,6 +168,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rpidsi.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs232-rts.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs422.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs485.dtb
> +dtb-$(CONFIG_ARCH_MXC) += imx8mp-venice-gw74xx-rpidsi.dtb
>  
>  dtb-$(CONFIG_ARCH_S32) += s32g274a-evb.dtb
>  dtb-$(CONFIG_ARCH_S32) += s32g274a-rdb2.dtb
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx-rpidsi.dtso b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx-rpidsi.dtso
> new file mode 100644
> index 000000000000..eec635ead119
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx-rpidsi.dtso
> @@ -0,0 +1,86 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2023 Gateworks Corporation
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +&{/} {
> +	compatible = "gateworks,imx8mp-gw74xx", "fsl,imx8mp";
> +
> +	panel {
> +		compatible = "powertip,ph800480t013-idf02";
> +		power-supply = <&attiny>;
> +		backlight = <&attiny>;
> +
> +		port {
> +			panel_in: endpoint {
> +				remote-endpoint = <&bridge_out>;
> +			};
> +		};
> +	};
> +};
> +
> +&i2c4 {
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +
> +	attiny: regulator@45 {
> +		compatible = "raspberrypi,7inch-touchscreen-panel-regulator";
> +		reg = <0x45>;
> +	};
> +};
> +
> +&lcdif1 {
> +	status = "okay";
> +};
> +
> +&mipi_dsi {
> +	samsung,burst-clock-frequency = <891000000>;
> +	samsung,esc-clock-frequency = <54000000>;
> +	samsung,pll-clock-frequency = <27000000>;
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +	status = "okay";
> +
> +	bridge@0 {
> +		compatible = "toshiba,tc358762";
> +		reg = <0>;
> +		vddc-supply = <&attiny>;
> +
> +		ports {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			port@0 {
> +				reg = <0>;

Missing newline.

Shawn

> +				bridge_in: endpoint {
> +					remote-endpoint = <&dsi_out>;
> +				};
> +			};
> +
> +			port@1 {
> +				reg = <1>;
> +
> +				bridge_out: endpoint {
> +					remote-endpoint = <&panel_in>;
> +				};
> +			};
> +		};
> +	};
> +
> +	ports {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		port@1 {
> +			reg = <1>;
> +
> +			dsi_out: endpoint {
> +				data-lanes = <1 2>;
> +				remote-endpoint = <&bridge_in>;
> +			};
> +		};
> +	};
> +};
> -- 
> 2.25.1
>