lkml.org 
[lkml]   [2022]   [Jul]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    SubjectRe: [PATCH 3/3] thermal: qcom: tsens: Implement re-initialization workaround quirk
    From


    On 1.07.2022 16:58, Bhupesh Sharma wrote:
    > Since for some QCoM tsens controllers, its suggested to
    > monitor the controller health periodically and in case an
    > issue is detected, to re-initialize the tsens controller
    > via trustzone, add the support for the same in the
    > qcom tsens driver.
    >
    > Note that Once the tsens controller is reset using scm call,
    > all SROT and TM region registers will enter the reset mode.
    >
    > While all the SROT registers will be re-programmed and
    > re-enabled in trustzone prior to the scm call exit, the TM
    > region registers will not re-initialized in trustzone and thus
    > need to be handled by the tsens driver.
    >
    > 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
    > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
    > Reported-by: kernel test robot <lkp@intel.com>
    > ---
    Hi, I think this should be also checked and applied on init. This
    seems required for at least SM6375, as the controller starts (or
    well, doesn't start...) in an unknown state and the driver does
    not like it, as the TSENS_EN indicates it is disabled.
    Downstream runs this right at probe..

    Konrad

    \
     
     \ /
      Last update: 2022-07-15 16:57    [W:3.207 / U:0.028 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site