linux-kernel - [PATCH v2 0/6] media: ti, cdns: Multiple pixel support and misc fixes

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Message-Id: <20250410-probe_fixes-v2-0-801bc6eebdea@ideasonboard.com>
Date: Thu, 10 Apr 2025 12:18:58 +0530
From: Jai Luthra <jai.luthra@...asonboard.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Hans Verkuil <hverkuil@...all.nl>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>
Cc: Devarsh Thakkar <devarsht@...com>, 
 Rishikesh Donadkar <r-donadkar@...com>, Vaishnav Achath <vaishnav.a@...com>, 
 Changhuang Liang <changhuang.liang@...rfivetech.com>, 
 linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Jai Luthra <jai.luthra@...asonboard.com>, stable@...r.kernel.org
Subject: [PATCH v2 0/6] media: ti, cdns: Multiple pixel support and misc
 fixes

Hi,

The first four patches in this series are miscellaneous fixes and
improvements in the Cadence and TI CSI-RX drivers around probing, fwnode
and link creation.

The last two patches add support for transmitting multiple pixels per
clock on the internal bus between Cadence CSI-RX bridge and TI CSI-RX
wrapper. As this internal bus is 32-bit wide, the maximum number of
pixels that can be transmitted per cycle depend upon the format's bit
width. Secondly, the downstream element must support unpacking of
multiple pixels.

Thus we export a module function that can be used by the downstream
driver to negotiate the pixels per cycle on the output pixel stream of
the Cadence bridge.

Signed-off-by: Jai Luthra <jai.luthra@...asonboard.com>
---
Changes in v2:
- Rebase on v6.15-rc1
- Fix lkp warnings in PATCH 5/6 missing header for FIELD_PREP
- Add R-By tags from Devarsh and Changhuang
- Link to v1: https://lore.kernel.org/r/20250324-probe_fixes-v1-0-5cd5b9e1cfac@ideasonboard.com

---
Jai Luthra (6):
      media: ti: j721e-csi2rx: Use devm_of_platform_populate
      media: ti: j721e-csi2rx: Use fwnode_get_named_child_node
      media: ti: j721e-csi2rx: Fix source subdev link creation
      media: cadence: csi2rx: Implement get_fwnode_pad op
      media: cadence: cdns-csi2rx: Support multiple pixels per clock cycle
      media: ti: j721e-csi2rx: Support multiple pixels per clock

 drivers/media/platform/cadence/cdns-csi2rx.c       | 76 +++++++++++++++++-----
 drivers/media/platform/cadence/cdns-csi2rx.h       | 19 ++++++
 drivers/media/platform/ti/Kconfig                  |  3 +-
 .../media/platform/ti/j721e-csi2rx/j721e-csi2rx.c  | 66 ++++++++++++++-----
 4 files changed, 129 insertions(+), 35 deletions(-)
---
base-commit: 0af2f6be1b4281385b618cb86ad946eded089ac8
change-id: 20250314-probe_fixes-7e0ec33c7fee

Best regards,
-- 
Jai Luthra <jai.luthra@...asonboard.com>