i3c: mipi-i3c-hci: Read HC_CONTROL_PIO_MODE only after i3c hci v1.1

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The HC_CONTROL_PIO_MODE bit was introduced in the HC_CONTROL register
starting from version 1.1. Therefore, checking the HC_CONTROL_PIO_MODE bit
on hardware that adheres to older specification revisions (i.e., versions
earlier than 1.1) is incorrect. To address this, add an additional check
to read the HCI version before attempting to read the HC_CONTROL_PIO_MODE
status.

Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Link: https://lore.kernel.org/r/20240829091713.736217-3-Shyam-sundar.S-k@amd.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

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Shyam Sundar S K 2024-08-29 14:47:09 +05:30 • committed by Alexandre Belloni

parent 8d2e56ef83

commit 039b23609f

1 changed files with 6 additions and 3 deletions

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

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