Re: [PATCH v5 3/6] i3c: mipi-i3c-hci: Add a quirk to set PIO mode

From: Jarkko Nikula
Date: Tue Aug 27 2024 - 03:08:18 EST


On 8/23/24 5:19 PM, Shyam Sundar S K wrote:
The AMD HCI controller currently only supports PIO mode but exposes DMA
rings to the OS, which leads to the controller being configured in DMA
mode. To address this, add a quirk to avoid configuring the controller in
DMA mode and default to PIO mode.

Additionally, introduce a generic quirk infrastructure to the mipi-i3c-hci
driver to facilitate seamless future quirk additions.

Co-developed-by: Krishnamoorthi M <krishnamoorthi.m@xxxxxxx>
Signed-off-by: Krishnamoorthi M <krishnamoorthi.m@xxxxxxx>
Co-developed-by: Guruvendra Punugupati <Guruvendra.Punugupati@xxxxxxx>
Signed-off-by: Guruvendra Punugupati <Guruvendra.Punugupati@xxxxxxx>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@xxxxxxx>
---

drivers/i3c/master/mipi-i3c-hci/core.c | 8 +++++++-
drivers/i3c/master/mipi-i3c-hci/hci.h | 1 +
2 files changed, 8 insertions(+), 1 deletion(-)

Reviewed-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>