[v4,0/6] Rx mode support for Cadence DPHY

Message

Pratyush Yadav Aug. 20, 2021, 7:03 p.m. UTC

Hi,

This series adds support for Rx mode on Cadence DPHY driver. It has been
split off from [0] to facilitate easier merging. I have still kept the
version number to maintain continuity with the previous patches. This
series also includes conversion to YAML binding.

Tested on TI's J721E with OV5640 sensor.

[0] https://patchwork.linuxtv.org/project/linux-media/list/?series=5526&state=%2A&archive=both

Changes in v4:
- Instead of having both Rx and Tx modes in the same driver data, keep
  them separate since the op selection is based on compatible now. For
  that reason, the cdns_dphy_driver_data struct is no longer needed.
- Rename ref_dphy_ops to tx_ref_dphy_ops to clarify their purpose.
- Drop submode checks in validate() hook.
- Drop the submode parts. Use a different compatible for the Rx ops.
- Make bands and num_bands static.

Changes in v3:
- Use a table to select the band.
- Use a table to poll the data lane ready bits.
- Multiply the DPHY HS clock rate by 2 to get the bit rate since the
  clock is DDR.
- Add Rob's R-by.

Changes in v2:
- Drop reg description.
- Add a description for each DPHY clock.
- Rename dphy@... to phy@... in example.
- Add Laurent's R-by.
- Re-order subject prefixes.
- Re-order subject prefixes.
- Add power-domain to the example.
- Add Laurent's R-by.
- Re-order subject prefixes.

Pratyush Yadav (6):
  phy: cdns-dphy: Prepare for Rx support
  phy: cdns-dphy: Add Rx support
  phy: dt-bindings: Convert Cadence DPHY binding to YAML
  phy: dt-bindings: cdns,dphy: make clocks optional
  phy: dt-bindings: cdns,dphy: add power-domains property
  phy: dt-bindings: cdns,dphy: add Rx DPHY compatible

 .../devicetree/bindings/phy/cdns,dphy.txt     |  20 --
 .../devicetree/bindings/phy/cdns,dphy.yaml    |  55 ++++
 drivers/phy/cadence/cdns-dphy.c               | 294 +++++++++++++++---
 3 files changed, 313 insertions(+), 56 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/phy/cdns,dphy.txt
 create mode 100644 Documentation/devicetree/bindings/phy/cdns,dphy.yaml

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2.30.0