linux-kernel - [PATCH v3 0/5] media: i2c: imx214: Add support for more clock frequencies

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Message-Id: <20250521-imx214_ccs_pll-v3-0-bfb4a2b53d14@apitzsch.eu>
Date: Wed, 21 May 2025 21:34:23 +0200
From: André Apitzsch via B4 Relay <devnull+git.apitzsch.eu@...nel.org>
To: Ricardo Ribalda <ribalda@...nel.org>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 devicetree@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, 
 André Apitzsch <git@...tzsch.eu>, 
 Ricardo Ribalda <ribalda@...omium.org>
Subject: [PATCH v3 0/5] media: i2c: imx214: Add support for more clock
 frequencies

The imx214 driver currently supports only a 24 MHz external clock. But
there are devices, like Qualcomm-MSM8916-based phones, which cannot
provide this frequency. To make the sensor usable by those devices, add
support for additional clock frequencies.

This series supersedes
https://lore.kernel.org/linux-media/20250308-imx214_clk_freq-v1-0-467a4c083c35@apitzsch.eu/

Signed-off-by: André Apitzsch <git@...tzsch.eu>
---
Changes in v3:
- Limit range of pll_ip_clk_freq_hz (Sakari)
- Drop unneeded 'ret'
- Use pll.pixel_rate_csi for bit rate calculation
- Add patch that deprecates the clock-frequency property
- Link to v2: https://lore.kernel.org/r/20250505-imx214_ccs_pll-v2-0-f50452061ff1@apitzsch.eu

Changes in v2:
- Add A-b tags
- Switch to v4l2_ctrl_s_ctrl_int64() to acquire the control handler mutex
- Add error handling for v4l2_ctrl_s_ctrl_int64() and
  imx214_pll_update()
- Replace "read clock frequency from dt" patch by "remove hard-coded
  external clock frequency" patch
- Link to v1:
  https://lore.kernel.org/r/20250415-imx214_ccs_pll-v1-0-d3d7748e5fbd@apitzsch.eu

---
André Apitzsch (5):
      media: i2c: imx214: Reorder imx214_parse_fwnode call
      media: i2c: imx214: Prepare for variable clock frequency
      media: i2c: imx214: Make use of CCS PLL calculator
      media: dt-bindings: sony,imx214: Deprecate property clock-frequency
      media: i2c: imx214: Remove hard-coded external clock frequency

 .../devicetree/bindings/media/i2c/sony,imx214.yaml |  29 ++-
 drivers/media/i2c/Kconfig                          |   1 +
 drivers/media/i2c/imx214.c                         | 263 ++++++++++++++++-----
 3 files changed, 217 insertions(+), 76 deletions(-)
---
base-commit: ae0384b772a260975af192746d900c328392e525
change-id: 20250406-imx214_ccs_pll-e4aed0e9e532

Best regards,
-- 
André Apitzsch <git@...tzsch.eu>