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

[Mukesh Savaliya]

On 8/24/2026 4:55 PM, Jyothi Kumar Seerapu wrote:
> Add I2C High-Speed (HS) mode support for the Qualcomm GENI I2C
> controller, detecting HS mode requests based on a 3.4 MHz bus
> frequency.

what's the detecting here ? HS mode itself is 3.4 MHz freq.
may be you be you can start with current support freq modes and not 
supported.>
> I2C HS mode is supported by the underlying QUP hardware starting with
> QUPv3 core version 4.3 (per the GENI/QUP Hardware Programming Guide).
> This series adds the driver support to detect that capability and
is this detect things repeating ?> enable HS-mode transfers on SoCs 
whose QUP core version meets that
> requirement, rather than tying HS mode to any specific peripheral.
>
> Patch 1 (dmaengine: qcom-gpi) is for GPI DMA transfers and adds
> a CONFIG1 TRE to the GPI DMA engine to convey HS-specific timing
> parameters (tcycle_cnt/tlow_cnt) to the hardware.
Patch 1 is to convey config parameters for HS mode in GPI DMA tranfser.

> Patch 2 (i2c: qcom-geni) handles FIFO/SE-DMA transfers; It configures
> the GENI controller's source clock and timing accordingly, and adds
> the HS-specific FIFO/SE-DMA opcodes and master-code preamble needed
> to switch the bus from Fast Mode Plus to HS speed.

Like above just say high level in short, individual patch will add more 
details in its commit log.

> Signed-off-by: Jyothi Kumar Seerapu <jyothi.seerapu@xxxxxxxxxxxxxxxx>
> ---
> 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             |  54 +++++++++++++--
>   drivers/i2c/busses/i2c-qcom-geni.c | 133 +++++++++++++++++++++++++++++++++----
>   include/linux/dma/qcom-gpi-dma.h   |  28 +++++++-
>   3 files changed, 196 insertions(+), 19 deletions(-)
> ---
> base-commit: 7079a12d7506b07fb53b54a664bfad5fa9b16d70
> change-id: 20260821-i2c-hs-408768509865
>
> Best regards,
> --
> Jyothi Kumar Seerapu <jyothi.seerapu@xxxxxxxxxxxxxxxx>