drm/panfrost: Implement ability to turn on/off regulators in suspend

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Some platforms/SoCs can power off the GPU entirely by completely cutting
off power, greatly enhancing battery time during system suspend: add a
new pm_feature GPU_PM_VREG_OFF to allow turning off the GPU regulators
during full suspend only on selected platforms.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231109102543.42971-6-angelogioacchino.delregno@collabora.com

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AngeloGioacchino Del Regno 2023-11-09 11:25:42 +01:00 • committed by Steven Price

parent 32f175d426

commit 889a2b06f8

2 changed files with 20 additions and 1 deletions

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19

drivers/gpu/drm/panfrost/panfrost_device.c

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2

drivers/gpu/drm/panfrost/panfrost_device.h

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