linux-kernel - Re: [PATCH v8 5/5] arm64: dts: ti: k3-am69-sk: Add DP and HDMI support

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Message-ID: <63175eeb-b8f7-344b-5019-10dfa83db245@ti.com>
Date:   Thu, 3 Aug 2023 10:56:41 +0530
From:   Jayesh Choudhary <j-choudhary@...com>
To:     Roger Quadros <rogerq@...nel.org>, <nm@...com>, <vigneshr@...com>,
        <tomba@...nel.org>
CC:     <s-vadapalli@...com>, <afd@...com>, <kristo@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <a-bhatia1@...com>, <r-ravikumar@...com>,
        <sabiya.d@...com>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v8 5/5] arm64: dts: ti: k3-am69-sk: Add DP and HDMI
 support

Hello Roger,

On 01/08/23 22:28, Roger Quadros wrote:
> +Tomi (fixed email)
> 
> Need to fix this in
> Documentation/devicetree/bindings/display/bridge/ti,tfp410.yaml
> 
> On 01/08/2023 19:48, Roger Quadros wrote:
>>
>>
>> On 01/08/2023 10:00, Jayesh Choudhary wrote:
>>> From: Dasnavis Sabiya <sabiya.d@...com>
>>>
>>> AM69 starter kit features an HDMI port and an eDP port.
>>>
>>> Add assigned clocks for DSS, DT node for DisplayPort PHY,
>>> pinmux for HDMI hotplug and power down, mcu_i2c1 and dss_vout
>>> for HDMI.
>>> Also enable Serdes4 settings for DP display.
>>>
>>> Add the endpoint nodes to describe connection from:
>>> DSS => MHDP => DisplayPort connector
>>> DSS => TI TFP410 DPI-to-DVI Bridge => HDMI connector
>>>
>>> Signed-off-by: Dasnavis Sabiya <sabiya.d@...com>
>>> [j-choudhary@...com: Fix dvi-bridge, dss, mhdp and serdes-refclk]
>>> Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
>>> ---
>>>   arch/arm64/boot/dts/ti/k3-am69-sk.dts | 237 ++++++++++++++++++++++++++
>>>   1 file changed, 237 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/ti/k3-am69-sk.dts b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
>>> index d282c2c633c1..d9a0794bcf6e 100644
>>> --- a/arch/arm64/boot/dts/ti/k3-am69-sk.dts
>>> +++ b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
>>> @@ -107,6 +107,83 @@ vdd_sd_dv: regulator-tlv71033 {
>>>   		states = <1800000 0x0>,
>>>   			 <3300000 0x1>;
>>>   	};
>>> +
>>> +	dp0_pwr_3v3: regulator {
>>
>> To be consistent with the rest of the file please
>> use regulator-dp0-pwr

Sure.

>>
>>> +		compatible = "regulator-fixed";
>>> +		regulator-name = "dp0-pwr";
>>> +		regulator-min-microvolt = <3300000>;
>>> +		regulator-max-microvolt = <3300000>;
>>> +		pinctrl-names = "default";
>>> +		pinctrl-0 = <&dp_pwr_en_pins_default>;
>>> +		gpio = <&main_gpio0 4 0>;	/* DP0_3V3 _EN */
>>> +		enable-active-high;
>>> +	};
>>> +
>>> +	dp0: connector {
>>
>> connector-dp0

Ok

>>
>>> +		compatible = "dp-connector";
>>> +		label = "DP0";
>>> +		type = "full-size";
>>> +		dp-pwr-supply = <&dp0_pwr_3v3>;
>>> +
>>> +		port {
>>> +			dp0_connector_in: endpoint {
>>> +				remote-endpoint = <&dp0_out>;
>>> +			};
>>> +		};
>>> +	};
>>> +
>>> +	hdmi-connector {
>>
>> connector-hdmi

Ok.

>>
>>> +		compatible = "hdmi-connector";
>>> +		label = "hdmi";
>>> +		type = "a";
>>> +
>>> +		pinctrl-names = "default";
>>> +		pinctrl-0 = <&hdmi_hpd_pins_default>;
>>> +
>>> +		ddc-i2c-bus = <&mcu_i2c1>;
>>> +
>>> +		/* HDMI_HPD */
>>> +		hpd-gpios = <&main_gpio0 0 GPIO_ACTIVE_HIGH>;
>>> +
>>> +		port {
>>> +			hdmi_connector_in: endpoint {
>>> +				remote-endpoint = <&tfp410_out>;
>>> +			};
>>> +		};
>>> +	};
>>> +
>>> +	dvi-bridge {
>>
>> Although DT binding doc for ti,tfp410 says encoder
>> a name starting with bridge maybe more appropriate.

Will keep it as bridge-dvi.

Will edit the node names in suggested in 3/5 and 4/5 as well.
I will address the new-line comments too.

Thanks
-Jayesh

>>

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