linux-kernel - Re: [PATCH v13 4/7] drm/i915/skl: Update plane watermarks atomically during plane updates

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Message-ID: <1a236eb1-0237-0fb5-1525-3e6c1546cdd0@linux.intel.com>
Date:   Tue, 23 Aug 2016 12:16:29 +0200
From:   Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
To:     Lyude <cpaul@...hat.com>
Cc:     stable@...r.kernel.org,
        Ville Syrjälä <ville.syrjala@...ux.intel.com>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Radhakrishna Sripada <radhakrishna.sripada@...el.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        David Airlie <airlied@...ux.ie>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v13 4/7] drm/i915/skl: Update plane watermarks atomically
 during plane updates

Op 22-08-16 om 18:50 schreef Lyude:
> Thanks to Ville for suggesting this as a potential solution to pipe
> underruns on Skylake.
>
> On Skylake all of the registers for configuring planes, including the
> registers for configuring their watermarks, are double buffered. New
> values written to them won't take effect until said registers are
> "armed", which is done by writing to the PLANE_SURF (or in the case of
> cursor planes, the CURBASE register) register.
Applied, thanks.

Can you resend 6/7 and 7/7?