Re: [PATCH v5 0/5] RISC-V SBI debug console extension support

[Palmer Dabbelt]

On Thu, 11 Jan 2024 06:50:37 PST (-0800), patchwork-bot+linux-riscv@xxxxxxxxxx wrote:
> Hello:
>
> This series was applied to riscv/linux.git (for-next)
> by Palmer Dabbelt <palmer@xxxxxxxxxxxx>:
>
> On Fri, 24 Nov 2023 12:39:00 +0530 you wrote:
> > The SBI v2.0 specification is now frozen. The SBI v2.0 specification defines
> > SBI debug console (DBCN) extension which replaces the legacy SBI v0.1
> > functions sbi_console_putchar() and sbi_console_getchar().
> > (Refer v2.0-rc5 at https://github.com/riscv-non-isa/riscv-sbi-doc/releases)
> >
> > This series adds support for SBI debug console (DBCN) extension in
> > Linux RISC-V.
> >
> > [...]
>
> Here is the summary with links:
>   - [v5,1/5] RISC-V: Add stubs for sbi_console_putchar/getchar()
>     https://git.kernel.org/riscv/c/f503b167b660
>   - [v5,2/5] RISC-V: Add SBI debug console helper routines
>     https://git.kernel.org/riscv/c/f43fabf444ca
>   - [v5,3/5] tty/serial: Add RISC-V SBI debug console based earlycon
>     https://git.kernel.org/riscv/c/c77bf3607a0f
>   - [v5,4/5] tty: Add SBI debug console support to HVC SBI driver
>     https://git.kernel.org/riscv/c/88ead68e764c
>   - [v5,5/5] RISC-V: Enable SBI based earlycon support
>     https://git.kernel.org/riscv/c/50942ad6ddb5
>
> You are awesome, thank you!

Nathan points out that this has some semantic conflicts with a patch in 
Greg's TTY tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?id=f32fcbedbe9290565e4eac3fd7c4c451d5478787

So I think the best bet is to wait on Greg's patch to land in Linus' 
tree, and then base a v6 of this patch set on that merged patch.  I'm 
going to drop this one from for-next.