Re: [PATCH v6 00/13] Enable I2C on SA8255p Qualcomm platforms

[Bjorn Andersson <andersson@kernel.org>]

On Fri, Feb 27, 2026 at 11:45:31AM +0530, Praveen Talari wrote:
> The Qualcomm automotive SA8255p SoC relies on firmware to configure
> platform resources, including clocks, interconnects and TLMM.
> The driver requests resources operations over SCMI using power
> and performance protocols.
> 
> The SCMI power protocol enables or disables resources like clocks,
> interconnect paths, and TLMM (GPIOs) using runtime PM framework APIs,
> such as resume/suspend, to control power states(on/off).
> 
> The SCMI performance protocol manages I2C frequency, with each
> frequency rate represented by a performance level. The driver uses
> geni_se_set_perf_opp() API to request the desired frequency rate..
> 
> As part of geni_se_set_perf_opp(), the OPP for the requested frequency
> is obtained using dev_pm_opp_find_freq_floor() and the performance
> level is set using dev_pm_opp_set_opp().
> 

@Andi, I've merged the soc-patches through an immutable branch into the
qcom-tree for 7.2, please find this at:

  https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git 20260227061544.1785978-1-praveen.talari@oss.qualcomm.com

Regards,
Bjorn

> Praveen Talari (13):
>   soc: qcom: geni-se: Refactor geni_icc_get() and make qup-memory ICC
>     path optional
>   soc: qcom: geni-se: Add geni_icc_set_bw_ab() function
>   soc: qcom: geni-se: Introduce helper API for resource initialization
>   soc: qcom: geni-se: Handle core clk in geni_se_clks_off() and
>     geni_se_clks_on()
>   soc: qcom: geni-se: Add resources activation/deactivation helpers
>   soc: qcom: geni-se: Introduce helper API for attaching power domains
>   soc: qcom: geni-se: Introduce helper APIs for performance control
>   dt-bindings: i2c: Describe SA8255p
>   i2c: qcom-geni: Isolate serial engine setup
>   i2c: qcom-geni: Move resource initialization to separate function
>   i2c: qcom-geni: Use resources helper APIs in runtime PM functions
>   i2c: qcom-geni: Store of_device_id data in driver private struct
>   i2c: qcom-geni: Enable I2C on SA8255p Qualcomm platforms
> ---
> v3->v4
> - Added a new patch(4/13) to handle core clk as part of
>   geni_se_clks_off/on().
> 
>  .../bindings/i2c/qcom,sa8255p-geni-i2c.yaml   |  64 ++++
>  drivers/i2c/busses/i2c-qcom-geni.c            | 324 +++++++++---------
>  drivers/soc/qcom/qcom-geni-se.c               | 270 ++++++++++++++-
>  include/linux/soc/qcom/geni-se.h              |  19 +
>  4 files changed, 491 insertions(+), 186 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/i2c/qcom,sa8255p-geni-i2c.yaml
> 
> 
> base-commit: 7d6661873f6b54c75195780a40d66bad3d482d8f
> -- 
> 2.34.1
>