linux-kernel - [PATCH v1 0/7] MHI Emergency download and flash programmer support

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Date:   Mon, 29 Mar 2021 18:28:17 -0700
From:   Bhaumik Bhatt <bbhatt@...eaurora.org>
To:     manivannan.sadhasivam@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, hemantk@...eaurora.org,
        jhugo@...eaurora.org, linux-kernel@...r.kernel.org,
        carl.yin@...ctel.com, naveen.kumar@...ctel.com,
        loic.poulain@...aro.org, abickett@...eaurora.org,
        Bhaumik Bhatt <bbhatt@...eaurora.org>
Subject: [PATCH v1 0/7] MHI Emergency download and flash programmer support

Allow handling EDL mode after SYS_ERROR occurs by reading the execution
environment post handling and move to power on reset state to accommodate the
scenario.
Handle EDL mode properly and wait for ready instead of just exiting from the
firmware load.
Allow use of the Flash Programmer execution environment as a mission mode
use case for a blank NAND power up scenario.
Always attempt a wait for MHI ready state as device could be waiting for the
host to do so after pass through execution environment is seen.
Introduce patch to improve state awareness and aid in debugging.

This patch series was tested on x86_64 architecture.

Bhaumik Bhatt (6):
  bus: mhi: core: Rely on accurate method to determine EDL mode
  bus: mhi: core: Wait for ready after an EDL firmware download
  bus: mhi: core: Handle EDL mode entry appropriately
  bus: mhi: core: Identify Flash Programmer as a mission mode use case
  bus: mhi: core: Wait for MHI READY state in most scenarios
  bus: mhi: core: Improve state strings for debug messages

Carl Yin (1):
  bus: mhi: core: Add support for Flash Programmer execution environment

 drivers/bus/mhi/core/boot.c     | 13 +++++++------
 drivers/bus/mhi/core/init.c     | 34 ++++++++++++++++++----------------
 drivers/bus/mhi/core/internal.h |  4 +++-
 drivers/bus/mhi/core/main.c     |  3 +++
 drivers/bus/mhi/core/pm.c       | 28 +++++++++++++++++++++++++---
 include/linux/mhi.h             |  4 +++-
 6 files changed, 59 insertions(+), 27 deletions(-)

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