media: iris: vpu3x: Add MNoC low power handshake during hardware power-off

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commit 93fad55aa9 upstream.

Add the missing write to AON_WRAPPER_MVP_NOC_LPI_CONTROL before
reading the LPI status register. Introduce a handshake loop to ensure
MNoC enters low power mode reliably during VPU3 hardware power-off with
timeout handling.

Fixes: 02083a1e00 ("media: platform: qcom/iris: add support for vpu33")
Cc: stable@vger.kernel.org
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-HDK
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com>
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Dikshita Agarwal 2025-08-22 11:23:30 +05:30 • committed by Greg Kroah-Hartman

parent 7a0a77b936

commit 78728f1f3f

1 changed files with 30 additions and 2 deletions

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drivers/media/platform/qcom/iris/iris_vpu3x.c

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