Re: [PATCH v3 0/4] Add support for tsens controller reinit via trustzone

On 8/4/22 11:16 AM, Bhupesh Sharma wrote:

Changes since v2:
-----------------
- v2 can be viewed here: https://lore.kernel.org/linux-arm-msm/20220724122424.2509021-1-bhupesh.sharma@linaro.org/ (local)
- Dropped sm6375 specific patch from v3, as suggested by Konrad.
- Rebased on latest linux-next (master branch) tip.

Changes since v1:
-----------------
- v1 can be viewed here: https://lore.kernel.org/linux-arm-msm/20220701145815.2037993-1-bhupesh.sharma@linaro.org/ (local)
- Addressed several comments from Bjorn regarding locking, serialization
   etc received on v1.
- Addressed Konrad's concerns about the tsens controller found on sm6375
   SoC which seems to start in a bad state or is disabled when entering
   the linux world.
- This series would depend on sm6375 tsens controller changes being
   added by Konrad. It is based on linux-next (master branch) tip.

Some versions of Qualcomm tsens controller might enter a
'bad state' causing sensor temperatures/interrupts status
to be in an 'invalid' state.

It is recommended to re-initialize the tsens controller
via trustzone (secure registers) using scm call(s) when that
happens.

This patchset adds the support for the same.

Cc: bjorn.andersson@linaro.org
Cc: Amit Kucheria <amitk@kernel.org>
Cc: Thara Gopinath <thara.gopinath@gmail.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-arm-msm@vger.kernel.org

Bhupesh Sharma (4):
   firmware: qcom: scm: Add support for tsens reinit workaround
   thermal: qcom: tsens: Add hooks for supplying platform specific reinit
     quirks
   thermal: qcom: tsens: Add driver support for re-initialization quirk
   thermal: qcom: tsens: Add reinit quirk support for tsens v2
     controllers

  drivers/firmware/qcom_scm.c     |  15 +++
  drivers/firmware/qcom_scm.h     |   4 +
  drivers/thermal/qcom/tsens-v2.c |  15 +++
  drivers/thermal/qcom/tsens.c    | 200 ++++++++++++++++++++++++++++++++
  drivers/thermal/qcom/tsens.h    |  18 ++-
  include/linux/qcom_scm.h        |   2 +
  6 files changed, 253 insertions(+), 1 deletion(-)

Gentle ping.

Thanks,
Bhupesh