sun4i drm device tree

sun4i drm device tree

[Sergey Suloev]

Hi everyone,

as far as I understand it is possible now to compile sun4i-drm for a64 
SoC. But it seems that there should be changes to device tree files 
(arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi, 
arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi) too.

Can you PLEASE give a ref to a patch or explain device tree changes needed?

Thanks a lot!

sun4i drm device tree

[Maxime Ripard]

Hi,

On Mon, Jan 22, 2018 at 11:15:58AM +0300, Sergey Suloev wrote:
> as far as I understand it is possible now to compile sun4i-drm for
> a64 SoC.

Well, compile yes, but the A64 isn't supported at the moment, so
compiling it won't get you very far. Where did you get that info from?

> But it seems that there should be changes to device tree files
> (arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi,
> arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi) too.
> 
> Can you PLEASE give a ref to a patch or explain device tree changes
> needed?

And even if it was supported, we'd need a lot more informations to
help you. For example, which boards, with which video outputs

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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sun4i drm device tree

[Sergey Suloev]

Hi Maxime,

On 01/22/2018 11:55 AM, Maxime Ripard wrote:
> Hi,
>
> On Mon, Jan 22, 2018 at 11:15:58AM +0300, Sergey Suloev wrote:
>> as far as I understand it is possible now to compile sun4i-drm for
>> a64 SoC.
> Well, compile yes, but the A64 isn't supported at the moment, so
> compiling it won't get you very far. Where did you get that info from?
I found a patch to enable sun4i-drm compilation for ARM64 and that's 
made me think that. Then I tried to compile it for A64 and it went 
without errors.
>> But it seems that there should be changes to device tree files
>> (arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi,
>> arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi) too.
>>
>> Can you PLEASE give a ref to a patch or explain device tree changes
>> needed?
> And even if it was supported, we'd need a lot more informations to
> help you. For example, which boards, with which video outputs
NanoPi A64, HDMI
> Maxime
>

sun4i drm device tree

[Sergey Suloev]

On 01/22/2018 11:55 AM, Maxime Ripard wrote:
> Hi,
>
> On Mon, Jan 22, 2018 at 11:15:58AM +0300, Sergey Suloev wrote:
>> as far as I understand it is possible now to compile sun4i-drm for
>> a64 SoC.
> Well, compile yes, but the A64 isn't supported at the moment, so
> compiling it won't get you very far. Where did you get that info from?
>
>> But it seems that there should be changes to device tree files
>> (arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi,
>> arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi) too.
>>
>> Can you PLEASE give a ref to a patch or explain device tree changes
>> needed?
> And even if it was supported, we'd need a lot more informations to
> help you. For example, which boards, with which video outputs
>
> Maxime
>
Maxime, it is still unclear about sun4i-drm on aarch64: should it work 
on NanoPi A64 ? Are there device tree patches for it ?

Can you (or someone else) share any info about the status, PLEASE. That 
may be helpful for many people, I guess.

Thanks a bunch

sun4i drm device tree

[Maxime Ripard]

On Fri, Jan 26, 2018 at 10:05:08AM +0300, Sergey Suloev wrote:
> On 01/22/2018 11:55 AM, Maxime Ripard wrote:
> > On Mon, Jan 22, 2018 at 11:15:58AM +0300, Sergey Suloev wrote:
> > > But it seems that there should be changes to device tree files
> > > (arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi,
> > > arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi) too.
> > > 
> > > Can you PLEASE give a ref to a patch or explain device tree changes
> > > needed?
> > And even if it was supported, we'd need a lot more informations to
> > help you. For example, which boards, with which video outputs
>
> Maxime, it is still unclear about sun4i-drm on aarch64: should it work on
> NanoPi A64 ?

No

> Are there device tree patches for it ?

No

> Can you (or someone else) share any info about the status, PLEASE. That may
> be helpful for many people, I guess.

It's documented here:
https://linux-sunxi.org/Mainlining_Effort#Status_Matrix

With a status of either WiP or not supported depending on the outputs.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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