Re: [PATCH] RISC-V: Enable SYSCON reboot and poweroff drivers

From: Andreas Schwab <schwab@suse.de>
To: David Abdurachmanov <david.abdurachmanov@gmail.com>
Cc: Anup Patel <anup@brainfault.org>, Anup Patel <Anup.Patel@wdc.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Atish Patra <Atish.Patra@wdc.com>,
	Alistair Francis <Alistair.Francis@wdc.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	"linux-riscv@lists.infradead.org"
	<linux-riscv@lists.infradead.org>, Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH] RISC-V: Enable SYSCON reboot and poweroff drivers
Date: Mon, 11 Nov 2019 18:05:33 +0100	[thread overview]
Message-ID: <mvmwoc6baxu.fsf@suse.de> (raw)
In-Reply-To: <CAEn-LTrL_Dtka6So3Pj=G+BV2a-UoHxGGLLDF4dqAG68AnH_5g@mail.gmail.com> (David Abdurachmanov's message of "Mon, 11 Nov 2019 19:01:23 +0200")

On Nov 11 2019, David Abdurachmanov wrote:

> On Mon, Nov 11, 2019 at 6:55 PM Andreas Schwab <schwab@suse.de> wrote:
>>
>> On Nov 11 2019, Anup Patel wrote:
>>
>> >> -----Original Message-----
>> >> From: Andreas Schwab <schwab@suse.de>
>> >> Sent: Monday, November 11, 2019 8:02 PM
>> >> To: Anup Patel <Anup.Patel@wdc.com>
>> >> Cc: Palmer Dabbelt <palmer@dabbelt.com>; Paul Walmsley
>> >> <paul.walmsley@sifive.com>; Atish Patra <Atish.Patra@wdc.com>; Alistair
>> >> Francis <Alistair.Francis@wdc.com>; Christoph Hellwig <hch@lst.de>; Anup
>> >> Patel <anup@brainfault.org>; linux-riscv@lists.infradead.org; linux-
>> >> kernel@vger.kernel.org
>> >> Subject: Re: [PATCH] RISC-V: Enable SYSCON reboot and poweroff drivers
>> >>
>> >> On Nov 11 2019, Anup Patel wrote:
>> >>
>> >> >> -----Original Message-----
>> >> >> From: Andreas Schwab <schwab@suse.de>
>> >> >> Sent: Monday, November 11, 2019 7:38 PM
>> >> >> To: Anup Patel <Anup.Patel@wdc.com>
>> >> >> Cc: Palmer Dabbelt <palmer@sifive.com>; Paul Walmsley
>> >> >> <paul.walmsley@sifive.com>; Atish Patra <Atish.Patra@wdc.com>;
>> >> >> Alistair Francis <Alistair.Francis@wdc.com>; Christoph Hellwig
>> >> >> <hch@lst.de>; Anup Patel <anup@brainfault.org>;
>> >> >> linux-riscv@lists.infradead.org; linux- kernel@vger.kernel.org
>> >> >> Subject: Re: [PATCH] RISC-V: Enable SYSCON reboot and poweroff
>> >> >> drivers
>> >> >>
>> >> >> On Nov 11 2019, Anup Patel wrote:
>> >> >>
>> >> >> > We can use SYSCON reboot and poweroff drivers for the SiFive test
>> >> >> > device found on QEMU virt machine and SiFive SOCs.
>> >> >>
>> >> >> I don't see any syscon-reboot compatible in the device tree.
>> >> >
>> >> > I have sent patch to QEMU as well for generating SYSCON DT nodes.
>> >>
>> >> What about the kernel DT?
>> >
>> > For QEMU virt machine, the DT is generated by QEMU at runtime
>> > so we don't need an explicit DT file in Linux sources.
>>
>> What about the HiFiveU?
>
> Unleashed uses gpio-restart which depends on gpio driver (not upstreamed and
> not posted for review on mailing list). I have that working on my build.

I do have that, too.  But I wonder about the "SiFive SOCs" reference
above.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

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