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bapm is a power management feature for handling the
power budget between the CPU and GPU on APUs. This
patch adds support for enabling or disabling it.
For now disable it by default. Enabling it properly
requires quite a bit more work and will be addressed
in a separate patch.
This patch fixes hangs on boot on certain trinity
laptops when the system is on battery power.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Allows you to force the selected performance level via sysfs.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This adds dpm support for btc asics. This includes:
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen switching
Set radeon.dpm=1 to enable.
v2: remove unused radeon_atombios.c changes,
make missing smc ucode non-fatal
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This adds dpm support for KB/KV asics. This includes:
- dynamic engine clock scaling
- dynamic voltage scaling
- power containment
- shader power scaling
Set radeon.dpm=1 to enable.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Allows you to force the selected performance level via sysfs.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Allows you to limit the selected power levels via sysfs.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This adds dpm support for SI asics. This includes:
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2/gen3 switching
- power containment
- shader power scaling
Set radeon.dpm=1 to enable.
v2: enable hainan support, rebase
v3: guard acpi stuff
v4: fix 64 bit math
v5: fix 64 bit div harder
v6: fix thermal interrupt check noticed by Jerome
v7: attempt fix state enable
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This adds dpm support for cayman asics. This includes:
- clockgating
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2 switching (requires additional acpi support)
- power containment
- shader power scaling
Set radeon.dpm=1 to enable.
v2: fold in tdp fix
v3: fix indentation
v4: fix 64 bit div
v5: attempt to fix state enable
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
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v2: fix typo noticed by Dan Carpenter
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This adds dpm support for trinity asics. This includes:
- clockgating
- powergating
- dynamic engine clock scaling
- dynamic voltage scaling
set radeon.dpm=1 to enable it.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This adds dpm support for rv7xx asics. This includes:
- clockgating
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2 switching
Set radeon.dpm=1 to enable.
v2: reduce stack usage
v3: fix 64 bit div
v4: fix state enable
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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