Commit Graph

5 Commits

Author SHA1 Message Date
Alex Deucher
dbc988c689 drm/amdgpu/hdp5.2: use memcfg register to post the write for HDP flush
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
2025-05-08 11:47:23 -04:00
Lijo Lazar
a5219b41dd drm/amdgpu: Clean up atom header file inclusion
atom bios header files are not required in these files.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-02-12 21:04:06 -05:00
Alex Deucher
f756dbac1c drm/amdgpu/hdp5.2: do a posting read when flushing HDP
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
2024-12-02 17:38:41 -05:00
Tim Huang
73c49a624a 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>
2022-08-16 18:05:54 -04:00
Xiaojian Du
78039df8e8 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>
2022-05-06 10:36:13 -04:00