Re: [PATCH] coresight: etm4x: Add support to disable trace unit power up

2020-05-15 Thread Sai Prakash Ranjan
On 2020-05-15 21:28, Sai Prakash Ranjan wrote: Hi Mathieu, On 2020-05-15 21:21, Mathieu Poirier wrote: On Fri, May 15, 2020 at 08:37:13PM +0530, Sai Prakash Ranjan wrote: Hi Mathieu, On 2020-05-15 20:22, Mathieu Poirier wrote: > On Thu, 14 May 2020 at 12:39, Sai Prakash Ranjan > wrote: > >

Re: [PATCH] coresight: etm4x: Add support to disable trace unit power up

2020-05-15 Thread Sai Prakash Ranjan
Hi Mathieu, On 2020-05-15 21:21, Mathieu Poirier wrote: On Fri, May 15, 2020 at 08:37:13PM +0530, Sai Prakash Ranjan wrote: Hi Mathieu, On 2020-05-15 20:22, Mathieu Poirier wrote: > On Thu, 14 May 2020 at 12:39, Sai Prakash Ranjan > wrote: > > > > Hi Mathieu, > > > > On 2020-05-14 23:30,

Re: [PATCH] coresight: etm4x: Add support to disable trace unit power up

2020-05-15 Thread Mathieu Poirier
On Fri, May 15, 2020 at 08:37:13PM +0530, Sai Prakash Ranjan wrote: > Hi Mathieu, > > On 2020-05-15 20:22, Mathieu Poirier wrote: > > On Thu, 14 May 2020 at 12:39, Sai Prakash Ranjan > > wrote: > > > > > > Hi Mathieu, > > > > > > On 2020-05-14 23:30, Mathieu Poirier wrote: > > > > Good morning

Re: [PATCH] coresight: etm4x: Add support to disable trace unit power up

2020-05-15 Thread Sai Prakash Ranjan
Hi Mathieu, On 2020-05-15 20:22, Mathieu Poirier wrote: On Thu, 14 May 2020 at 12:39, Sai Prakash Ranjan wrote: Hi Mathieu, On 2020-05-14 23:30, Mathieu Poirier wrote: > Good morning Sai, > > On Thu, May 14, 2020 at 04:29:15PM +0530, Sai Prakash Ranjan wrote: >> From: Tingwei Zhang >> >>

Re: [PATCH] coresight: etm4x: Add support to disable trace unit power up

2020-05-15 Thread Mathieu Poirier
On Thu, 14 May 2020 at 12:39, Sai Prakash Ranjan wrote: > > Hi Mathieu, > > On 2020-05-14 23:30, Mathieu Poirier wrote: > > Good morning Sai, > > > > On Thu, May 14, 2020 at 04:29:15PM +0530, Sai Prakash Ranjan wrote: > >> From: Tingwei Zhang > >> > >> On some Qualcomm Technologies Inc. SoCs

Re: [PATCH] coresight: etm4x: Add support to disable trace unit power up

2020-05-14 Thread Sai Prakash Ranjan
Hi Mathieu, On 2020-05-14 23:30, Mathieu Poirier wrote: Good morning Sai, On Thu, May 14, 2020 at 04:29:15PM +0530, Sai Prakash Ranjan wrote: From: Tingwei Zhang On some Qualcomm Technologies Inc. SoCs like SC7180, there exists a hardware errata where the APSS (Application Processor

Re: [PATCH] coresight: etm4x: Add support to disable trace unit power up

2020-05-14 Thread Mathieu Poirier
Good morning Sai, On Thu, May 14, 2020 at 04:29:15PM +0530, Sai Prakash Ranjan wrote: > From: Tingwei Zhang > > On some Qualcomm Technologies Inc. SoCs like SC7180, there > exists a hardware errata where the APSS (Application Processor > SubSystem)/CPU watchdog counter is stopped when ETM

[PATCH] coresight: etm4x: Add support to disable trace unit power up

2020-05-14 Thread Sai Prakash Ranjan
From: Tingwei Zhang On some Qualcomm Technologies Inc. SoCs like SC7180, there exists a hardware errata where the APSS (Application Processor SubSystem)/CPU watchdog counter is stopped when ETM register TRCPDCR.PU=1. Since the ETMs share the same power domain as that of respective CPU cores,