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Date: Sun, 12 Apr 2026 08:09:51 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
Cc: Manivannan Sadhasivam <mani@kernel.org>, Richard Cochran
 <richardcochran@gmail.com>, mhi@lists.linux.dev,
 linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
 netdev@vger.kernel.org, Vivek Pernamitta
 <vivek.pernamitta@oss.qualcomm.com>, Sivareddy Surasani
 <sivareddy.surasani@oss.qualcomm.com>, Vivek Pernamitta
 <quic_vpernami@quicinc.com>, Imran Shaik <imran.shaik@oss.qualcomm.com>,
 Taniya Das <taniya.das@oss.qualcomm.com>
Subject: Re: [PATCH v2 0/6] bus: mhi: host: mhi_phc: Add support for PHC
 over MHI
Message-ID: <20260412080951.723295fa@kernel.org>
In-Reply-To: <20260411-tsc_timesync-v2-0-6f25f72987b3@oss.qualcomm.com>
References: <20260411-tsc_timesync-v2-0-6f25f72987b3@oss.qualcomm.com>
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On Sat, 11 Apr 2026 13:42:00 +0530 Krishna Chaitanya Chundru wrote:
> - User space applications use the standard Linux PTP interface.
> - The PTP subsystem routes IOCTLs to the MHI PHC driver.
> - The MHI PHC driver communicates with the MHI core to fetch timestamps.
> - The MHI core interacts with the device to retrieve accurate time data.

Nack, stop adding functionality under the mhi "bus".
Bus is supposed to be an abstraction into which real drivers plug in.