linux-kernel - Re: [PATCH v4 5/6] i3c: mipi-i3c-hci: Add a quirk to set timing parameters

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Message-ID: <9cc7f7a1-72b5-42fd-b5eb-6cd1cf59f3e7@linux.intel.com>
Date: Fri, 23 Aug 2024 13:11:05 +0300
From: Jarkko Nikula <jarkko.nikula@...ux.intel.com>
To: Shyam Sundar S K <Shyam-sundar.S-k@....com>,
 Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc: Guruvendra Punugupati <Guruvendra.Punugupati@....com>,
 Krishnamoorthi M <krishnamoorthi.m@....com>, linux-i3c@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 5/6] i3c: mipi-i3c-hci: Add a quirk to set timing
 parameters

On 8/21/24 4:35 PM, Shyam Sundar S K wrote:
> 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.
> 
> Co-developed-by: Guruvendra Punugupati <Guruvendra.Punugupati@....com>
> Signed-off-by: Guruvendra Punugupati <Guruvendra.Punugupati@....com>
> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@....com>
> ---
>   drivers/i3c/master/mipi-i3c-hci/Makefile     |  3 +-
>   drivers/i3c/master/mipi-i3c-hci/core.c       |  6 +++-
>   drivers/i3c/master/mipi-i3c-hci/hci.h        |  2 ++
>   drivers/i3c/master/mipi-i3c-hci/hci_quirks.c | 33 ++++++++++++++++++++
>   4 files changed, 42 insertions(+), 2 deletions(-)
>   create mode 100644 drivers/i3c/master/mipi-i3c-hci/hci_quirks.c
> 
Reviewed-by: Jarkko Nikula <jarkko.nikula@...ux.intel.com>