Alex Deucher
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b6f0f3e6c7
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drm/amdgpu/hdp5.2: use memcfg register to post the write for HDP flush
commit dbc988c689 upstream.
Reading back the remapped HDP flush register seems to cause
problems on some platforms. All we need is a read, so read back
the memcfg register.
Fixes: f756dbac1c ("drm/amdgpu/hdp5.2: do a posting read when flushing HDP")
Reported-by: Alexey Klimov <alexey.klimov@linaro.org>
Link: https://lists.freedesktop.org/archives/amd-gfx/2025-April/123150.html
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4119
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3908
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 4a89b7698e)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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2025-05-18 08:24:53 +02:00 |
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Alex Deucher
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573e70eb7e
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drm/amdgpu/hdp5.2: do a posting read when flushing HDP
commit f756dbac1c upstream.
Need to read back to make sure the write goes through.
Cc: David Belanger <david.belanger@amd.com>
Reviewed-by: Frank Min <frank.min@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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2024-12-14 20:03:29 +01:00 |
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Tim Huang
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73c49a624a
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drm/amdgpu: add HDP IP v5.2.1 Clock Gating support
Add set/get_clockgating for HDP IP v5.2.1.
Signed-off-by: Tim Huang <tim.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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2022-08-16 18:05:54 -04:00 |
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Xiaojian Du
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78039df8e8
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drm/amdgpu: add the files of HDP v5.2 block
This patch is to add the files of HDP v5.2 block.
HDP (Host Data Port) is the IP which handles
host access to VRAM via the PCI BAR.
Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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2022-05-06 10:36:13 -04:00 |
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