lkml.org 
[lkml]   [2019]   [May]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v7 2/4] soc: qcom: Add AOSS QMP driver
From
Date
On 5/1/2019 10:07 AM, Bjorn Andersson wrote:
> The Always On Subsystem (AOSS) Qualcomm Messaging Protocol (QMP) driver
> is used to communicate with the AOSS for certain side-channel requests,
> that are not available through the RPMh interface.
>
> The communication is a very simple synchronous mechanism of messages
> being written in message RAM and a doorbell in the AOSS is rung. As the
> AOSS has processed the message length is cleared and an interrupt is
> fired by the AOSS as acknowledgment.
>
> The driver exposes the QDSS clock as a clock and the low-power state
> associated with the remoteprocs in the system as a set of power-domains.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
>
> Changes since v6:
> - Squash the pd into the same driver as the communication, to simplify
> the interaction.
> - Representing the QDSS clocks as a clock/power domain turns out to
> cascade into a request to make all Coresight drivers have a secondary
> compatible to replace the required bus clock with a required power
> domain. So in v7 this is exposed as a clock instead.
> - Some error checking updates, as reported by Doug.
>

Thanks for the patch Bjorn.
Tested the QDSS functionality on SDM845 based Cheza board with this
change and it works just fine.

Tested-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>

--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation

\
 
 \ /
  Last update: 2019-05-25 19:55    [W:0.219 / U:0.808 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site