[PATCH v2 0/2] i2c: Add I2C High-Speed mode support for qcom-geni

[Jyothi Kumar Seerapu]

The GENI I2C driver currently supports Standard (100 KHz), Fast
(400 KHz), and Fast Mode Plus (1 MHz) speeds, but not High-Speed
(HS) mode (3.4 MHz).

The underlying QUP hardware supports I2C HS mode starting with QUPv3
core version 4.3, per the GENI/QUP Hardware Programming Guide. Add
driver support to enable HS-mode transfers based on that QUP core
version.

Patch 1 (dmaengine: qcom-gpi) adds a CONFIG1 TRE to convey HS-mode
timing parameters (tcycle_cnt/tlow_cnt) for GPI DMA transfers.

Patch 2 (i2c: qcom-geni) adds HS-mode support for FIFO/SE-DMA
transfers, including the required clock/timing configuration and
master-code preamble.

Signed-off-by: Jyothi Kumar Seerapu <jyothi.seerapu@xxxxxxxxxxxxxxxx>
---
Changes in v2:
- Update commit descriptions across the series.
- Refine code comments in the qcom-gpi DMA and i2c-qcom drivers based on review feedback.
- Fix issues reported by the Sashiko bot.
- Optimize geni_se_setup_m_cmd or I2C HS mode condition in I2C QCOM driver.
- Link to v1: https://lore.kernel.org/all/20260824-i2c-hs-v1-0-8dd94e5c6113@xxxxxxxxxxxxxxxx/

To: Vinod Koul <vkoul@xxxxxxxxxx>
To: Frank Li <Frank.Li@xxxxxxxxxx>
To: Mukesh Kumar Savaliya <mukesh.savaliya@xxxxxxxxxxxxxxxx>
To: Viken Dadhaniya <viken.dadhaniya@xxxxxxxxxxxxxxxx>
To: Andi Shyti <andi.shyti@xxxxxxxxxx>
Cc: linux-arm-msm@xxxxxxxxxxxxxxx
Cc: dmaengine@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: linux-i2c@xxxxxxxxxxxxxxx

---
Jyothi Kumar Seerapu (2):
      dmaengine: qcom-gpi: Add I2C High-Speed mode configuration support
      i2c: qcom-geni: Add support for I2C High-Speed mode

 drivers/dma/qcom/gpi.c             |  56 ++++++++++++++--
 drivers/i2c/busses/i2c-qcom-geni.c | 127 +++++++++++++++++++++++++++++++++----
 include/linux/dma/qcom-gpi-dma.h   |  28 +++++++-
 3 files changed, 189 insertions(+), 22 deletions(-)
---
base-commit: 7079a12d7506b07fb53b54a664bfad5fa9b16d70
change-id: 20260821-i2c-hs-408768509865

Best regards,
--  
Jyothi Kumar Seerapu <jyothi.seerapu@xxxxxxxxxxxxxxxx>