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From: eric@anholt.net (Eric Anholt)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2 v3] drm/pl111: Enable device-specific assigned memory
Date: Wed, 18 Apr 2018 09:45:15 -0700	[thread overview]
Message-ID: <87po2wlazo.fsf@anholt.net> (raw)
In-Reply-To: <20180418085242.19525-2-linus.walleij@linaro.org>

Linus Walleij <linus.walleij@linaro.org> writes:

> The Versatile Express has 8 MB of dedicated video RAM (VRAM)
> on the motherboard, which is what we should be using for the
> PL111 if available. On this platform, the memory backplane
> is constructed so that only this memory will work properly
> with the CLCD on the motherboard, using any other memory
> area just gives random snow on the display.
>
> The CA9 Versatile Express also has a PL111 instance on its
> core tile that can address all memory, and this does not
> have the restriction.

Reviewed-by: Eric Anholt <eric@anholt.net>
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WARNING: multiple messages have this Message-ID (diff)
From: Eric Anholt <eric@anholt.net>
To: Linus Walleij <linus.walleij@linaro.org>,
	Daniel Vetter <daniel.vetter@intel.com>,
	Jani Nikula <jani.nikula@linux.intel.com>,
	Sean Paul <seanpaul@chromium.org>,
	Liviu Dudau <liviu.dudau@arm.com>
Cc: Mali DP Maintainers <malidp@foss.arm.com>,
	linux-arm-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 2/2 v3] drm/pl111: Enable device-specific assigned memory
Date: Wed, 18 Apr 2018 09:45:15 -0700	[thread overview]
Message-ID: <87po2wlazo.fsf@anholt.net> (raw)
In-Reply-To: <20180418085242.19525-2-linus.walleij@linaro.org>


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Linus Walleij <linus.walleij@linaro.org> writes:

> The Versatile Express has 8 MB of dedicated video RAM (VRAM)
> on the motherboard, which is what we should be using for the
> PL111 if available. On this platform, the memory backplane
> is constructed so that only this memory will work properly
> with the CLCD on the motherboard, using any other memory
> area just gives random snow on the display.
>
> The CA9 Versatile Express also has a PL111 instance on its
> core tile that can address all memory, and this does not
> have the restriction.

Reviewed-by: Eric Anholt <eric@anholt.net>

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  reply	other threads:[~2018-04-18 16:45 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-18  8:52 [PATCH 1/2 v3] drm/pl111: Support the Versatile Express Linus Walleij
2018-04-18  8:52 ` Linus Walleij
2018-04-18  8:52 ` [PATCH 2/2 v3] drm/pl111: Enable device-specific assigned memory Linus Walleij
2018-04-18  8:52   ` Linus Walleij
2018-04-18 16:45   ` Eric Anholt [this message]
2018-04-18 16:45     ` Eric Anholt
2018-04-18 12:48 ` [PATCH 1/2 v3] drm/pl111: Support the Versatile Express Robin Murphy
2018-04-18 12:48   ` Robin Murphy
2018-04-23  7:18   ` Linus Walleij
2018-04-23  7:18     ` Linus Walleij
2018-04-24 12:17     ` Daniel Vetter
2018-04-24 12:17       ` Daniel Vetter
2018-04-18 16:48 ` Eric Anholt
2018-04-18 16:48   ` Eric Anholt

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