Hi Crag,

On Wed, Jul 10, 2019 at 04:58:40PM +0800, Crag Wang wrote:

Adding more

On Wed, Jul 10, 2019 at 10:59 AM [off-list ref] wrote:

quoted

From: "Crag.Wang" <redacted>

Delay time for MELFAS MIP4 controller is required at power on stage
regardless the existence of GPIO consumer lookup from devicetree or
ACPI device table.

There is an issue if GPIO ce is undefined in the ACPI results no delay
time for deive power on, the controller ended up in an abnormal state.

If kernel does not reset the controller it should not have to wait for
reset to complete either. Since your firmware resets the controller it
also has to conform to the timing requirements.

Thanks.

-- 
Dmitry