Re: [PATCH v3 0/8] Add Sipeed Lichee Pi 4A RISC-V board support

[Conor Dooley]

Hey Jisheng,

On Sun, Jun 18, 2023 at 12:15:21AM +0800, Jisheng Zhang wrote:
> Sipeed's Lichee Pi 4A development board uses Lichee Module 4A core
> module which is powered by T-HEAD's TH1520 SoC. Add minimal device
> tree files for the core module and the development board.
> 
> Support basic uart/gpio/dmac drivers, so supports booting to a basic
> shell.
> 
> NOTE: the thead cpu reset dt-binding and DT node are removed in v3. This
> makes secondary CPUs unable to be online.

The kernel doesn't do anything with that node though, so if you were to
load a fitImage in U-Boot containing this DT, having booted with
whatever the factory provided OpenSBI has, that limitation doesn't
apply, right?

> However, minimal th1520
> support is better than nothing. And the community has been working on
> and will work on the cpu reset dt-binding, for example, Conor, Guo and
> Jessica are discussing about it, I have seen valuable comments and
> inputs from them. I believe we can add back cpu reset in next
> development window.

I'll go take a look through this, if it's good I'll apply it and send it
on to Arnd for 6.5? Although I assume it is fine since v2 was nearly
fine!

Cheers,
Conor.

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