linux-kernel - Re: [PATCH v10 3/4] ARM64: ACPI: enable ACPI_SPCR

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Date:   Fri, 9 Sep 2016 16:17:58 +0100
From:   Will Deacon <will.deacon@....com>
To:     Aleksey Makarov <aleksey.makarov@...aro.org>
Cc:     Aleksey Makarov <amakarov.linux@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        "Zheng, Lv" <lv.zheng@...el.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Russell King <linux@....linux.org.uk>,
        Peter Hurley <peter@...leysoftware.com>,
        Graeme Gregory <graeme.gregory@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        linux-kernel@...r.kernel.org,
        Leif Lindholm <leif.lindholm@...aro.org>,
        linux-acpi@...r.kernel.org, Yury Norov <ynorov@...iumnetworks.com>,
        Christopher Covington <cov@...eaurora.org>,
        linux-serial@...r.kernel.org, Mark Salter <msalter@...hat.com>,
        Al Stone <ahs3@...hat.com>,
        linux-arm-kernel@...ts.infradead.org, Len Brown <lenb@...nel.org>
Subject: Re: [PATCH v10 3/4] ARM64: ACPI: enable ACPI_SPCR_TABLE

On Fri, Sep 09, 2016 at 06:07:04PM +0300, Aleksey Makarov wrote:
> On 09/09/2016 12:29 PM, Will Deacon wrote:
> > On Wed, Sep 07, 2016 at 12:30:19PM +0300, Aleksey Makarov wrote:
> >>
> >> On 09/05/2016 03:36 PM, Aleksey Makarov wrote:
> >>> SBBR mentions SPCR as a mandatory ACPI table.  So enable it for ARM64
> >>>
> >>> Earlycon should be set up as early as possible.  ACPI boot tables are
> >>> mapped in arch/arm64/kernel/acpi.c:acpi_boot_table_init() that
> >>> is called from setup_arch() and that's where we parse SPCR.
> >>> So it has to be opted-in per-arch.
> >>>
> >>> When ACPI_SPCR_TABLE is defined initialization of DT earlycon is
> >>> deferred until the DT/ACPI decision is done.  Initialize DT earlycon
> >>> if ACPI is disabled.
> >>
> >> Hi Will, Catalin,
> >>
> >> Can you review this patch and consider ACKing it please?
> > 
> > Since the ACPI folks seem happy with the series, then:
> > 
> > Acked-by: Will Deacon <will.deacon@....com>
> > 
> > for this patch.
> 
> Thank you.  Can you pull the series?  Should I ask Rafael?

The series should go via Rafael, since the bulk of the changes are
outside of arch/arm64.

Will