]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
drm/amd/pm: reverse mclk and fclk clocks levels for SMU v13.0.4
authorTim Huang <Tim.Huang@amd.com>
Sun, 21 May 2023 01:24:00 +0000 (09:24 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 9 Jun 2023 08:48:16 +0000 (10:48 +0200)
commitd336b34755729821566a3ecbafa2b4ef9316a29e
tree69bf1d3e4785f96e31684b315729aaf14ccd3548
parent17502a5a431054cb032487de18d92e307d36ab5a
drm/amd/pm: reverse mclk and fclk clocks levels for SMU v13.0.4

commit 6a07826f2057b5fa1c479ba56460195882464270 upstream.

This patch reverses the DPM clocks levels output of pp_dpm_mclk
and pp_dpm_fclk.

On dGPUs and older APUs we expose the levels from lowest clocks
to highest clocks. But for some APUs, the clocks levels that from
the DFPstateTable are given the reversed orders by PMFW. Like the
memory DPM clocks that are exposed by pp_dpm_mclk.

It's not intuitive that they are reversed on these APUs. All tools
and software that talks to the driver then has to know different ways
to interpret the data depending on the asic.

So we need to reverse them to expose the clocks levels from the
driver consistently.

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>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c