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37 lines
1.2 KiB
Diff
37 lines
1.2 KiB
Diff
From b98c66887ee1aec661dcb88fe17399d5d112ed98 Mon Sep 17 00:00:00 2001
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From: Russell King <rmk+kernel@arm.linux.org.uk>
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Date: Thu, 21 Jan 2016 15:19:59 +0000
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Subject: [PATCH] drm/etnaviv: ignore VG GPUs with FE2.0
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Ignore GPUs with a 2.0 front end. These have a different register
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layout for the front end, which provokes imprecise aborts from the
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register accesses in the 'gpu' debugfs file.
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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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---
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drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
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index e0e68dd..a9530f5 100644
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--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
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+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
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@@ -515,6 +515,14 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
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goto fail;
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}
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+ /* Exclude VG cores with FE2.0 */
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+ if (gpu->identity.features & chipFeatures_PIPE_VG &&
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+ gpu->identity.features & chipFeatures_FE20) {
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+ dev_info(gpu->dev, "Ignoring GPU with VG and FE2.0\n");
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+ ret = -ENXIO;
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+ goto fail;
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+ }
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+
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ret = etnaviv_hw_reset(gpu);
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if (ret)
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goto fail;
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--
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2.7.0.rc3
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