Thread (23 messages) flat view 23 messages, 4 authors, 22d ago

Re: [PATCH v9 09/13] pmdomain/rockchip: cycle optional power-domain resets on power-on

From: Abel Vesa <hidden>
Date: 2026-08-24 11:31:05
Also in: dri-devel, linux-devicetree, linux-iommu, linux-pm, linux-rockchip, lkml

On 26-08-24 23:08:58, Jiaxing Hu wrote:
Some Rockchip domains come out of power-on with their bus interface in
an undefined state. On the RK3576 NPU this shows up as a hang on the
first register access after the domain is switched on, and pulsing the
domain's resets at this point clears it.

Take the domain node's resets if it has any, and pulse them between
releasing idle and restoring QoS. The resets are optional, so domains
that do not list any are unaffected.

Signed-off-by: Jiaxing Hu <redacted>
Reviewed-by: Abel Vesa <redacted>
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