Re: [PATCH v3 1/6] arm64: dts: ti: k3-j784s4: Add Wave5 Video Encoder/Decoder Node

[Andrew Davis <afd@ti.com>]

On 2/1/24 1:13 PM, Brnich, Brandon wrote:
> Hi Andrew,
> 
>> -----Original Message-----
>> From: Davis, Andrew <afd@ti.com>
>> Sent: Thursday, February 1, 2024 12:35 PM
>> To: Brnich, Brandon <b-brnich@ti.com>; Menon, Nishanth <nm@ti.com>;
>> Raghavendra, Vignesh <vigneshr@ti.com>; Tero Kristo <kristo@kernel.org>;
>> Rob Herring <robh+dt@kernel.org>; Krzysztof Kozlowski
>> <krzysztof.kozlowski+dt@linaro.org>; Conor Dooley <conor+dt@kernel.org>;
>> Catalin Marinas <catalin.marinas@arm.com>; Will Deacon
>> <will@kernel.org>; Bjorn Andersson <quic_bjorande@quicinc.com>; Geert
>> Uytterhoeven <geert+renesas@glider.be>; Arnd Bergmann
>> <arnd@arndb.de>; Konrad Dybcio <konrad.dybcio@linaro.org>; Neil
>> Armstrong <neil.armstrong@linaro.org>; Nícolas F . R . A . Prado
>> <nfraprado@collabora.com>; Marek Szyprowski
>> <m.szyprowski@samsung.com>; linux-arm-kernel@lists.infradead.org;
>> devicetree@vger.kernel.org; linux-kernel@vger.kernel.org; Etheridge, Darren
>> <detheridge@ti.com>
>> Subject: Re: [PATCH v3 1/6] arm64: dts: ti: k3-j784s4: Add Wave5 Video
>> Encoder/Decoder Node
>>
>> On 1/31/24 3:26 PM, Brandon Brnich wrote:
>>> This patch adds support for the Wave521cl on the J784S4-evm.
>>>
>>> Signed-off-by: Brandon Brnich <b-brnich@ti.com>
>>> ---
>>>    arch/arm64/boot/dts/ti/k3-j784s4-evm.dts   |  8 ++++++++
>>>    arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 20 ++++++++++++++++++++
>>>    arch/arm64/boot/dts/ti/k3-j784s4.dtsi      |  2 ++
>>>    3 files changed, 30 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
>>> b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
>>> index f34b92acc56d..7d37c11b4df4 100644
>>> --- a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
>>> +++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
>>> @@ -784,6 +784,14 @@ &main_gpio0 {
>>>    	status = "okay";
>>>    };
>>>
>>> +&vpu0 {
>>> +	status = "okay";
>>> +};
>>> +
>>> +&vpu1 {
>>> +	status = "okay";
>>> +};
>>> +
>>>    &mcu_cpsw {
>>>    	status = "okay";
>>>    	pinctrl-names = "default";
>>> diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
>>> b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
>>> index f2b720ed1e4f..8b2623ac8160 100644
>>> --- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
>>> +++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
>>> @@ -662,6 +662,26 @@ main_i2c6: i2c@2060000 {
>>>    		status = "disabled";
>>>    	};
>>>
>>> +	vpu0: video-codec@4210000 {
>>> +		compatible = "ti,j721s2-wave521c", "cnm,wave521c";
>>> +		reg = <0x00 0x4210000 0x00 0x10000>;
>>> +		interrupts = <GIC_SPI 182 IRQ_TYPE_LEVEL_HIGH>;
>>> +		clocks = <&k3_clks 241 2>;
>>> +		clock-names = "vcodec";
>>> +		power-domains = <&k3_pds 241 TI_SCI_PD_EXCLUSIVE>;
>>> +		status = "disabled";
>>
>> Why are these default disabled? I don't see anything missing that would
>> need to be added at the board level. You disable them just to re-enable them
>> in the next patch. Leave these default enabled.
> 
> I thought that disabled by default was the standard for node in dtsi files, where
> they get specifically enabled in the particular dts file for the SoC.
> 

Only disabled if there is missing information needed for the node to function
that can only be added at the board level, e.g. pinmux usually.

> In V4 I will remove the disabled by default. Should this apply to all platforms in
> the series?

Yes

Andrew

>   
>>> +	};
>>> +
>>> +	vpu1: video-codec@4220000 {
>>> +		compatible = "ti,j721s2-wave521c", "cnm,wave521c";
>>> +		reg = <0x00 0x4220000 0x00 0x10000>;
>>> +		interrupts = <GIC_SPI 183 IRQ_TYPE_LEVEL_HIGH>;
>>> +		clocks = <&k3_clks 242 2>;
>>> +		clock-names = "vcodec";
>>> +		power-domains = <&k3_pds 242 TI_SCI_PD_EXCLUSIVE>;
>>> +		status = "disabled";
>>> +	};
>>> +
>>>    	main_sdhci0: mmc@4f80000 {
>>>    		compatible = "ti,j721e-sdhci-8bit";
>>>    		reg = <0x00 0x04f80000 0x00 0x1000>, diff --git
>>> a/arch/arm64/boot/dts/ti/k3-j784s4.dtsi
>>> b/arch/arm64/boot/dts/ti/k3-j784s4.dtsi
>>> index 4398c3a463e1..93bb0cba1b48 100644
>>> --- a/arch/arm64/boot/dts/ti/k3-j784s4.dtsi
>>> +++ b/arch/arm64/boot/dts/ti/k3-j784s4.dtsi
>>> @@ -247,6 +247,8 @@ cbass_main: bus@100000 {
>>>    			 <0x00 0x30000000 0x00 0x30000000 0x00
>> 0x0c400000>, /* MAIN NAVSS */
>>>    			 <0x41 0x00000000 0x41 0x00000000 0x01
>> 0x00000000>, /* PCIe1 DAT1 */
>>>    			 <0x4e 0x20000000 0x4e 0x20000000 0x00
>> 0x00080000>, /* GPU */
>>> +			 <0x00 0x04210000 0x00 0x04210000 0x00
>> 0x00010000>, /* VPU0 */
>>> +			 <0x00 0x04220000 0x00 0x04220000 0x00
>> 0x00010000>, /* VPU1 */
>>
>> Add these in sorted by memory address order.
> 
> Will do in V4 as well.
> 
>>
>> Andrew
>>
>>>
>>>    			 /* MCUSS_WKUP Range */
>>>    			 <0x00 0x28380000 0x00 0x28380000 0x00
>> 0x03880000>,
> 
> Brandon