i3c: mipi-i3c-hci: Reset RING_OPERATION1 fields during init

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The MIPI I3C HCI specification does not define reset values for
RING_OPERATION1 fields, and some controllers (e.g., Intel) do not clear
them during a software reset.  Ensure the ring pointers are explicitly
set to zero during bus initialization to avoid inconsistent state.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260113072702.16268-2-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

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Adrian Hunter 2026-01-13 09:26:42 +02:00 • committed by Alexandre Belloni

parent 3502cea99c

commit 78f63ae4a8

1 changed files with 8 additions and 0 deletions

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drivers/i3c/master/mipi-i3c-hci/dma.c

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