From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: David Heidelberg <david@ixit.cz>, Frank Li <Frank.li@oss.nxp.com>
Cc: Robert Foss <rfoss@kernel.org>, Todor Tomov <todor.too@gmail.com>,
Bryan O'Donoghue <bryan.odonoghue@linaro.org>,
Bryan O'Donoghue <bod@kernel.org>,
Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Luca Weiss <luca.weiss@fairphone.com>,
Petr Hodina <phodina@protonmail.com>,
"Dr. Git" <drgitx@gmail.com>, Cory Keitz <ckeitz@amazon.com>,
Loic Poulain <loic.poulain@oss.qualcomm.com>,
Hans Verkuil <hverkuil@kernel.org>,
Nihal Kumar Gupta <nihal.gupta@oss.qualcomm.com>,
Frank Li <Frank.Li@nxp.com>, Kieran Bingham <kbingham@kernel.org>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org
Subject: Re: [PATCH RESEND v9 7/9] media: qcom: camss: csiphy-3ph: Update Gen2 v1.1 MIPI CSI-2 C-PHY init
Date: Thu, 30 Jul 2026 12:55:00 +0200 [thread overview]
Message-ID: <8744db31-8d26-4fbf-84ec-2c8562abe327@oss.qualcomm.com> (raw)
In-Reply-To: <f378a69d-64dc-45b9-bc16-b33d1041e421@ixit.cz>
On 7/30/26 12:09 AM, David Heidelberg wrote:
> On 29/07/2026 23:37, Frank Li wrote:
>> On Wed, Jul 29, 2026 at 10:20:02PM +0200, David Heidelberg wrote:
>>> These values should improve C-PHY behaviour. Should match most recent
>>> Qualcomm code.
>>
>> Any reference? where recent Qualcomm code? do you know the real reason?
>
> That's a question for Konrad. This improvement was introduced in the upstreaming process, update taken from more recent sequence.
It matches the latest what we call "Hardware Settings Reference" set
of values, and happens to be present in e.g. this tree:
https://github.com/sony-sdm845/android_kernel_sony_sdm845/blob/lineage-20/drivers/media/platform/msm/camera_v3/cam_sensor_module/cam_csiphy/include/cam_csiphy_1_0_hwreg.h
also worth noting, 845 is csiphy v1.0, not 1.1
Konrad
next prev parent reply other threads:[~2026-07-30 10:55 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-29 20:19 [PATCH RESEND v9 0/9] media: camss: Add support for C-PHY configuration on Qualcomm platforms David Heidelberg via B4 Relay
2026-07-29 20:19 ` [PATCH RESEND v9 1/9] media: qcom: camss: csiphy-3ph: Fix lane mask calculation David Heidelberg via B4 Relay
2026-07-29 21:26 ` Frank Li
2026-07-29 20:19 ` [PATCH RESEND v9 2/9] media: qcom: camss: csiphy: Introduce PHY configuration David Heidelberg via B4 Relay
2026-07-29 20:19 ` [PATCH RESEND v9 3/9] media: qcom: camss: csiphy-3ph: Use odd bits for configuring C-PHY lanes David Heidelberg via B4 Relay
2026-07-29 21:29 ` Frank Li
2026-07-29 20:19 ` [PATCH RESEND v9 4/9] media: qcom: camss: Prepare CSID for C-PHY support David Heidelberg via B4 Relay
2026-07-29 20:20 ` [PATCH RESEND v9 5/9] media: qcom: camss: Initialize lanes after lane configuration is available David Heidelberg via B4 Relay
2026-07-29 20:20 ` [PATCH RESEND v9 6/9] media: qcom: camss: csiphy-3ph: Add Gen2 v1.1 MIPI CSI-2 C-PHY init David Heidelberg via B4 Relay
2026-07-29 21:35 ` Frank Li
2026-07-30 9:15 ` David Heidelberg
2026-07-30 9:31 ` Bryan O'Donoghue
2026-07-30 9:48 ` David Heidelberg
2026-07-29 20:20 ` [PATCH RESEND v9 7/9] media: qcom: camss: csiphy-3ph: Update " David Heidelberg via B4 Relay
2026-07-29 21:37 ` Frank Li
2026-07-29 22:09 ` David Heidelberg
2026-07-30 10:55 ` Konrad Dybcio [this message]
2026-07-29 20:20 ` [PATCH RESEND v9 8/9] media: qcom: camss: Account for C-PHY when calculating link frequency David Heidelberg via B4 Relay
2026-07-29 21:41 ` Frank Li
2026-07-30 9:22 ` David Heidelberg
2026-07-29 20:20 ` [PATCH RESEND v9 9/9] media: qcom: camss: Enable C-PHY where available David Heidelberg via B4 Relay
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