i3c: Add fallback method for GETMXDS CCC

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Some I3C hardware will report error when an incorrect length is received from
device. GETMXDS CCC are available in 2 formats: without turnaround time (format
1) and with turnaround time (format 2). There is no mechanics to determine which
format is supported by device. So in case sending GETMXDS CCC format 2 resulted
in a failure, try sending GETMXDS CCC format 1 instead.

Signed-off-by: Joshua Yeong <joshua.yeong@starfivetech.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20231114085525.6271-2-joshua.yeong@starfivetech.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

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Joshua Yeong 2023-11-14 16:55:25 +08:00 • committed by Alexandre Belloni

parent 4afd728769

commit 2aac0bf4eb

1 changed files with 10 additions and 2 deletions

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drivers/i3c/master.c

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