On 4/17/2022 11:46 PM, Manivannan Sadhasivam wrote:
On Wed, Apr 13, 2022 at 03:00:19PM -0600, Jeffrey Hugo wrote:
From: Jeffrey Hugo <jhugo@xxxxxxxxxxxxxx>
The MHI bus supports a standardized hardware reset, which is known as the
"SoC Reset". This reset is similar to the reset sysfs for PCI devices -
a hardware mechanism to reset the state back to square one.
The MHI SoC Reset is described in the spec as a reset of last resort. If
some unrecoverable error has occurred where other resets have failed, SoC
Reset is the "big hammer" that ungracefully resets the device. This is
effectivly the same as yanking the power on the device, and reapplying it.
However, depending on the nature of the particular issue, the underlying
transport link may remain active and configured. If the link remains up,
the device will flag a MHI system error early in the boot process after
the reset is executed, which allows the MHI bus to process a fatal error
event, and clean up appropiately.
While the SoC Reset is generally intended as a means of recovery when all
else has failed, it can be useful in non-error scenarios. For example,
if the device loads firmware from the host filesystem, the device may need
to be fully rebooted inorder to pick up the new firmware. In this
scenario, the system administrator may use the soc_reset sysfs to cause
the device to pick up the new firmware that the admin placed on the
filesystem.
Signed-off-by: Jeffrey Hugo <jhugo@xxxxxxxxxxxxxx>
Signed-off-by: Jeffrey Hugo <quic_jhugo@xxxxxxxxxxx>
Do you need double signed-off because of change in domain?
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
That seems to be the convention that I see in the community. As I
understand it, the SoB is linked to the Developers Certificate of
Origin. This version of the change is coming from
"quic_jhugo@xxxxxxxxxxx" and that entity needs to certify they can share
the code under the Cert of Origin.
In theory, I could have avoided this by sending this version under the
codeaurora address. The problem is that the codeaurora domain no longer
exists, so sending/receiving email from that id is not possible.
If I'm not understanding things correctly, please educate me.
