Re: [PATCH v2 0/9] interconnect: qcom: let MSM8974 interconnect work again

[Alexandre Messier]

On 2026-03-23 20:10, Dmitry Baryshkov wrote:
> Commit d6edc31f3a68 ("clk: qcom: smd-rpm: Separate out interconnect bus
> clocks") moved control over several RPM resources from the clk-smd-rpm
> driver to the icc-rpm.c interconnect helpers. Most of the platforms were
> fixed before that commit or shortly after. However the MSM8974 was left
> as a foster child in broken state. Fix the loose ends and reenable
> interconnects on that platform.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> ---
> Changes in v2:
> - Swapped order of clocks and clock-names properties (Konrad)
> - Corrected the ocmem comment regarding core clock (Konrad)
> - Link to v1: https://lore.kernel.org/r/20260323-msm8974-icc-v1-0-7892b8d5f2ea@xxxxxxxxxxxxxxxx
> 
> ---
> Dmitry Baryshkov (9):
>       dt-bindings: interconnect: qcom,msm8974: drop bus clocks
>       dt-bindings: interconnect: qcom,msm8974: use qcom,rpm-common
>       interconnect: qcom: drop unused is_on flag
>       interconnect: qcom: icc-rpm: allow overwriting get_bw callback
>       interconnect: qcom: define OCMEM bus resource
>       interconnect: qcom: let platforms declare their bugginess
>       interconnect: qcom: msm8974: switch to the main icc-rpm driver
>       interconnect: qcom: msm8974: expand DEFINE_QNODE macros
>       ARM: dts: qcom: msm8974: Drop RPM bus clocks
> 
>  .../bindings/interconnect/qcom,msm8974.yaml        |   28 +-
>  arch/arm/boot/dts/qcom/qcom-msm8974.dtsi           |   21 +-
>  drivers/interconnect/qcom/icc-rpm-clocks.c         |    6 +
>  drivers/interconnect/qcom/icc-rpm.c                |   18 +-
>  drivers/interconnect/qcom/icc-rpm.h                |    7 +-
>  drivers/interconnect/qcom/msm8974.c                | 1637 +++++++++++++++-----
>  6 files changed, 1274 insertions(+), 443 deletions(-)
> ---
> base-commit: 8e5a478b6d6a5bb0a3d52147862b15e4d826af19
> change-id: 20260322-msm8974-icc-0ac4c28e139a
> 
> Best regards,
> --  
> With best wishes
> Dmitry
> 
> 

Tried this patch series on top of 7.0-rc5, using "htc,m8", and can confirm the device boots properly now!

I do see these messages in the kernel log now:

[    0.692540] ocmem fdd00000.sram: error -ENOENT: Unable to get core clock
[    0.692582] ocmem fdd00000.sram: probe with driver ocmem failed with error -2
[   24.173125] mmcc-msm8974 fd8c0000.clock-controller: sync_state() pending due to fdd00000.sram

I do not know if that error was expected or not.

In any case:

Tested-by: Alexandre Messier <alex@xxxxxxxxxxxx>