[PATCH v15 10/15] pmdomain: rockchip: cycle an optional power-domain reset on power-on
Heiko Stübner
heiko at sntech.de
Tue Nov 3 14:36:51 PST 2026
Am Sonntag, 1. November 2026, 09:23:02 Mitteleuropäische Normalzeit schrieb Jiaxing Hu:
> 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
> reset at this point clears it.
>
> Take the domain node's reset if it has one, and pulse it between
> releasing idle and restoring QoS. The reset is optional, so domains that
> do not list one are unaffected.
>
> Signed-off-by: Jiaxing Hu <gahing at gahingwoo.com>
> Reviewed-by: Abel Vesa <abel.vesa at oss.qualcomm.com>
Reviewed-by: Heiko Stuebner <heiko at sntech.de>
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