Messages in this thread | | | Date | Wed, 18 Oct 2023 10:06:44 +0200 | Subject | Re: [PATCH v9 22/23] drm/mediatek: Power on devices in OVL adaptor when atomic enable | From | AngeloGioacchino Del Regno <> |
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Il 18/10/23 06:36, Hsiao Chien Sung ha scritto: > Different from OVL, OVL adaptor is a pseudo device so we didn't > define it in the device tree, consequently, pm_runtime_resume_and_get() > called by .atomic_enable() powers on no device in OVL adaptor and > leads to power outage in the corresponding IOMMU. > > To resolve the issue, we implement a function to power on the RDMAs > in OVL adaptor, and the system will make sure the IOMMU is powered on > as well because of the device link (iommus) in the RDMA nodes in DTS. > > Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
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