]> www.infradead.org Git - users/jedix/linux-maple.git/commit
i3c: mipi-i3c-hci: Add a quirk to set timing parameters
authorShyam Sundar S K <Shyam-sundar.S-k@amd.com>
Thu, 29 Aug 2024 09:17:12 +0000 (14:47 +0530)
committerAlexandre Belloni <alexandre.belloni@bootlin.com>
Thu, 5 Sep 2024 16:34:09 +0000 (18:34 +0200)
commit46d4daa517e91a197ad253c1d81de29e8e2980be
tree3bb2302345fe564043f7eae29ab32ee7525686dd
parent216201b3d7df0a9d2c848789b65c7f332f84a3af
i3c: mipi-i3c-hci: Add a quirk to set timing parameters

The AMD HCI controller is currently unstable at 12.5 MHz. To address this,
a quirk is added to configure the clock rate to 9 MHz as a workaround,
with proportional adjustments to the Open-Drain (OD) and Push-Pull (PP)
values.

Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Co-developed-by: Guruvendra Punugupati <Guruvendra.Punugupati@amd.com>
Signed-off-by: Guruvendra Punugupati <Guruvendra.Punugupati@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20240829091713.736217-6-Shyam-sundar.S-k@amd.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
drivers/i3c/master/mipi-i3c-hci/Makefile
drivers/i3c/master/mipi-i3c-hci/core.c
drivers/i3c/master/mipi-i3c-hci/hci.h
drivers/i3c/master/mipi-i3c-hci/hci_quirks.c [new file with mode: 0644]