linux-kernel - Re: [PATCH] drm/i915: Don't force IOSF

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

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.
-Chris