linux-kernel - Re: [PATCH v1 1/1] platform/x86: intel_pmc

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Message-ID: <CAHp75VdTJLUG_SJYm7pk5Aoqs=gV0QG2yJGe4y9pP98yvHcKLw@mail.gmail.com>
Date:   Thu, 16 Mar 2017 18:05:39 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Rajneesh Bhardwaj <rajneesh.bhardwaj@...el.com>
Cc:     Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        Andy Shevchenko <andy@...radead.org>,
        Zha Qipeng <qipeng.zha@...el.com>,
        "dvhart@...radead.org" <dvhart@...radead.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 1/1] platform/x86: intel_pmc_ipc: fix io mem mapping size

On Thu, Mar 16, 2017 at 4:52 PM, Rajneesh Bhardwaj
<rajneesh.bhardwaj@...el.com> wrote:
> On Wed, Mar 15, 2017 at 08:32:53PM -0700, Kuppuswamy Sathyanarayanan wrote:
>> Mapping entire GCR mem region in this driver creates
>> mem region request conflict in sub devices that depend
>> on PMC. This creates driver probe failure in devices like
>> iTC0_wdt and telemetry device.

> iTCO_WDT driver needs to check the BIT4 (NO_REBOOT) of PMC_CFG register
> (Offset: 0x1008) and this falls in GCR space.

Are we talking about ACPI-enabled platform?

-- 
With Best Regards,
Andy Shevchenko