On 19/04/2018 13:00, Arnd Bergmann wrote:
On Thu, Apr 19, 2018 at 1:55 PM, John Garry <[email protected]> wrote:
For ACPI support of the HiSilicon LPC driver we depend
on MFD_CORE config.
Currently the HiSi LPC Kconfig entry does not define this
dependency, so add it.
Fixes: e0aa1563f894 ("HISI LPC: Add ACPI support")
Reported-and-tested-by: Tan Xiaojun <[email protected]>
Signed-off-by: John Garry <[email protected]>
Can you explain the specific dependency? Normally MFD_CORE gets
selected by an MFD driver but not other drivers.
For each device on the LPC bus we create an MFD.
The reason we do this is that we need to set the resources of the
derived MFD, as we should not modify the original ACPI device created in
ACPI scan. Details are in the log for e0aa1563f894.
Shall I update commit message updated with this info? Or were you just
interested in the motivation for using MFD?
Thanks,
John
Arnd
.
