linux-stable/drivers/i3c
Shyam Sundar S K 039b23609f i3c: mipi-i3c-hci: Read HC_CONTROL_PIO_MODE only after i3c hci v1.1
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>
2024-09-05 18:34:08 +02:00
..
master i3c: mipi-i3c-hci: Read HC_CONTROL_PIO_MODE only after i3c hci v1.1 2024-09-05 18:34:08 +02:00
device.c i3c: Add comment for -EAGAIN in i3c_device_do_priv_xfers() 2024-05-23 00:29:19 +02:00
internals.h i3c: master: Enhance i3c_bus_type visibility for device searching & event monitoring 2024-07-26 14:21:30 +02:00
Kconfig i3c: Add core I3C infrastructure 2018-11-12 10:33:49 +01:00
Makefile i3c: Add core I3C infrastructure 2018-11-12 10:33:49 +01:00
master.c I3C for 6.11 2024-07-27 10:53:06 -07:00