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Date:   Mon, 20 Jul 2020 17:29:00 +0800
From:   Jisheng Zhang <Jisheng.Zhang@synaptics.com>
To:     Chris Wilson <chris@chris-wilson.co.uk>
Cc:     Daniel Vetter <daniel@ffwll.ch>, David Airlie <airlied@linux.ie>,
        Jani Nikula <jani.nikula@linux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@intel.com>,
        intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drm/i915: Don't force IOSF_MBI
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On Fri, 17 Jul 2020 20:32:44 +0100 Chris Wilson  wrote:

> 
> 
> Quoting Jisheng Zhang (2020-07-17 07:11:38)
> > The i915 doesn't depend on IOSF_MBI, asm/iosf_mbi.h already defines
> > isof_mbi_* APIs when ISOF_MBI is disabled.
> >
> > Don't force IOSF_MBI to allow disabling IOSF_MBI for non SoC platforms.  
> 
> But it is required for Valleyview/Cherryview and we want to support
> those by default. Tricky.

If linux kernel is built for Valleyview/Cherryview, ISOF_MBI has to be
enabled. The dependency is met there.

Thanks