[PATCH v4 0/6] media: ti, cdns: Multiple pixel support and misc fixes

Jai Luthra posted 6 patches 1 month, 3 weeks ago
MAINTAINERS                                        |  1 +
drivers/media/platform/cadence/cdns-csi2rx.c       | 75 ++++++++++++++++------
drivers/media/platform/ti/Kconfig                  |  3 +-
.../media/platform/ti/j721e-csi2rx/j721e-csi2rx.c  | 65 ++++++++++++++-----
include/media/cadence/cdns-csi2rx.h                | 19 ++++++
5 files changed, 128 insertions(+), 35 deletions(-)
[PATCH v4 0/6] media: ti, cdns: Multiple pixel support and misc fixes
Posted by Jai Luthra 1 month, 3 weeks ago
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@ideasonboard.com>
---
Changes in v4:
- Rebase on top of v6.17-rc1
- Add missing include for linux/export.h in cdns-csi2rx.c
- Link to v3: https://lore.kernel.org/r/20250626-probe_fixes-v3-0-83e735ae466e@ideasonboard.com

Changes in v3:
- Move cdns-csi2rx header to include/media
- Export symbol from cdns-csi2rx.c to be used only through
  the j721e-csi2rx.c module namespace
- Other minor fixes suggested by Sakari
- Add Abhilash's T-by tags
- Link to v2: https://lore.kernel.org/r/20250410-probe_fixes-v2-0-801bc6eebdea@ideasonboard.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

 MAINTAINERS                                        |  1 +
 drivers/media/platform/cadence/cdns-csi2rx.c       | 75 ++++++++++++++++------
 drivers/media/platform/ti/Kconfig                  |  3 +-
 .../media/platform/ti/j721e-csi2rx/j721e-csi2rx.c  | 65 ++++++++++++++-----
 include/media/cadence/cdns-csi2rx.h                | 19 ++++++
 5 files changed, 128 insertions(+), 35 deletions(-)
---
base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
change-id: 20250314-probe_fixes-7e0ec33c7fee

Best regards,
-- 
Jai Luthra <jai.luthra@ideasonboard.com>
Re: [PATCH v4 0/6] media: ti, cdns: Multiple pixel support and misc fixes
Posted by Rishikesh Donadkar 1 month, 2 weeks ago
On 11/08/25 13:50, Jai Luthra wrote:
> Hi,


Hi Jai,
Thank you for the patches !


>
> 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@ideasonboard.com>


For the entire series,

Reviewed-by: Rishikesh Donadkar <r-donadkar@ti.com>

Tested-by: Rishikesh Donadkar <r-donadkar@ti.com>


Test Logs (SK-AM62A + IMX219) :

https://gist.github.com/Rishikesh-D/cb1d06cf341c2327da0d38a6b21688d6


Regards,

Rishikesh

> ---
> Changes in v4:
> - Rebase on top of v6.17-rc1
> - Add missing include for linux/export.h in cdns-csi2rx.c
> - Link to v3: https://lore.kernel.org/r/20250626-probe_fixes-v3-0-83e735ae466e@ideasonboard.com
>
> Changes in v3:
> - Move cdns-csi2rx header to include/media
> - Export symbol from cdns-csi2rx.c to be used only through
>    the j721e-csi2rx.c module namespace
> - Other minor fixes suggested by Sakari
> - Add Abhilash's T-by tags
> - Link to v2: https://lore.kernel.org/r/20250410-probe_fixes-v2-0-801bc6eebdea@ideasonboard.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
>
>   MAINTAINERS                                        |  1 +
>   drivers/media/platform/cadence/cdns-csi2rx.c       | 75 ++++++++++++++++------
>   drivers/media/platform/ti/Kconfig                  |  3 +-
>   .../media/platform/ti/j721e-csi2rx/j721e-csi2rx.c  | 65 ++++++++++++++-----
>   include/media/cadence/cdns-csi2rx.h                | 19 ++++++
>   5 files changed, 128 insertions(+), 35 deletions(-)
> ---
> base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
> change-id: 20250314-probe_fixes-7e0ec33c7fee
>
> Best regards,