linux-kernel - Re: [PATCH V6 5/6] arm64: dts: imx8mp: add HDMI display pipeline

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Message-ID: <20240227083301.4saxxuv4n6aoqnl6@pengutronix.de>
Date: Tue, 27 Feb 2024 09:33:01 +0100
From: Marco Felsch <m.felsch@...gutronix.de>
To: Adam Ford <aford173@...il.com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-phy@...ts.infradead.org,
	Marek Vasut <marex@...x.de>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Fabio Estevam <festevam@...il.com>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Will Deacon <will@...nel.org>, Rob Herring <robh@...nel.org>,
	imx@...ts.linux.dev, Sascha Hauer <s.hauer@...gutronix.de>,
	aford@...conembedded.com, linux-kernel@...r.kernel.org,
	Vinod Koul <vkoul@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Shawn Guo <shawnguo@...nel.org>,
	Luca Ceresoli <luca.ceresoli@...tlin.com>,
	devicetree@...r.kernel.org, Lucas Stach <l.stach@...gutronix.de>
Subject: Re: [PATCH V6 5/6] arm64: dts: imx8mp: add HDMI display pipeline

Hi Adam,

thanks a lot for pushing this topic.

On 24-02-26, Adam Ford wrote:
> From: Lucas Stach <l.stach@...gutronix.de>
> 
> This adds the DT nodes for all the peripherals that make up the
> HDMI display pipeline.
> 
> Signed-off-by: Lucas Stach <l.stach@...gutronix.de>
> Signed-off-by: Adam Ford <aford173@...il.com>
> Tested-by: Marek Vasut <marex@...x.de>
> Tested-by: Luca Ceresoli <luca.ceresoli@...tlin.com>
> ---
> V6:  Make LCDIF3 disabled by default
> 
> V5:  No change
> 
> V3:  Re-ordered the HDMI parts to properly come after irqstree_hdmi
>      inside AIPS4.  Change size of LCDIF3 and PVI to match TRM sizes
>      of 4KB.
> 
> V2:  I took this from Lucas' original submission with the following:
>      Removed extra clock from HDMI-TX since it is now part of the
>      power domain
>      Added interrupt-parent to PVI
>      Changed the name of the HDMI tranmitter to fsl,imx8mp-hdmi-tx
>      Added ports to HDMI-tx
> ---
>  arch/arm64/boot/dts/freescale/imx8mp.dtsi | 95 +++++++++++++++++++++++
>  1 file changed, 95 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> index 18bfa7d9aa7f..637b0265b0f1 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> @@ -1940,6 +1940,101 @@ irqsteer_hdmi: interrupt-controller@...c2000 {
>  				clock-names = "ipg";
>  				power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_IRQSTEER>;
>  			};
> +
> +			hdmi_pvi: display-bridge@...c4000 {
> +				compatible = "fsl,imx8mp-hdmi-pvi";
> +				reg = <0x32fc4000 0x1000>;
> +				interrupt-parent = <&irqsteer_hdmi>;
> +				interrupts = <12>;
> +				power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_PVI>;

this node should be 'status = "disabled";' as reported by Luca else this
node will EPROBE_DEFER. With that beeing fixed you can add my:

Tested-by: Marco Felsch <m.felsch@...gutronix.de>

Regards,
  Marco

> +
> +				ports {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +
> +					port@0 {
> +						reg = <0>;
> +						pvi_from_lcdif3: endpoint {
> +							remote-endpoint = <&lcdif3_to_pvi>;
> +						};
> +					};
> +
> +					port@1 {
> +						reg = <1>;
> +						pvi_to_hdmi_tx: endpoint {
> +							remote-endpoint = <&hdmi_tx_from_pvi>;
> +						};
> +					};
> +				};
> +			};
> +
> +			lcdif3: display-controller@...c6000 {
> +				compatible = "fsl,imx8mp-lcdif";
> +				reg = <0x32fc6000 0x1000>;
> +				interrupt-parent = <&irqsteer_hdmi>;
> +				interrupts = <8>;
> +				clocks = <&hdmi_tx_phy>,
> +					 <&clk IMX8MP_CLK_HDMI_APB>,
> +					 <&clk IMX8MP_CLK_HDMI_ROOT>;
> +				clock-names = "pix", "axi", "disp_axi";
> +				power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_LCDIF>;
> +				status = "disabled";
> +
> +				port {
> +					lcdif3_to_pvi: endpoint {
> +						remote-endpoint = <&pvi_from_lcdif3>;
> +					};
> +				};
> +			};
> +
> +			hdmi_tx: hdmi@...d8000 {
> +				compatible = "fsl,imx8mp-hdmi-tx";
> +				reg = <0x32fd8000 0x7eff>;
> +				interrupt-parent = <&irqsteer_hdmi>;
> +				interrupts = <0>;
> +				clocks = <&clk IMX8MP_CLK_HDMI_APB>,
> +					 <&clk IMX8MP_CLK_HDMI_REF_266M>,
> +					 <&clk IMX8MP_CLK_32K>,
> +					 <&hdmi_tx_phy>;
> +				clock-names = "iahb", "isfr", "cec", "pix";
> +				assigned-clocks = <&clk IMX8MP_CLK_HDMI_REF_266M>;
> +				assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_266M>;
> +				power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_HDMI_TX>;
> +				reg-io-width = <1>;
> +				status = "disabled";
> +
> +				ports {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +
> +					port@0 {
> +						reg = <0>;
> +
> +						hdmi_tx_from_pvi: endpoint {
> +							remote-endpoint = <&pvi_to_hdmi_tx>;
> +						};
> +					};
> +
> +					port@1 {
> +						reg = <1>;
> +						/* Point endpoint to the HDMI connector */
> +					};
> +				};
> +			};
> +
> +			hdmi_tx_phy: phy@...dff00 {
> +				compatible = "fsl,imx8mp-hdmi-phy";
> +				reg = <0x32fdff00 0x100>;
> +				clocks = <&clk IMX8MP_CLK_HDMI_APB>,
> +					 <&clk IMX8MP_CLK_HDMI_24M>;
> +				clock-names = "apb", "ref";
> +				assigned-clocks = <&clk IMX8MP_CLK_HDMI_24M>;
> +				assigned-clock-parents = <&clk IMX8MP_CLK_24M>;
> +				power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_HDMI_TX_PHY>;
> +				#clock-cells = <0>;
> +				#phy-cells = <0>;
> +				status = "disabled";
> +			};
>  		};
>  
>  		pcie: pcie@...00000 {
> -- 
> 2.43.0
> 
> 
>