Hi, Rafael, Thanks for your review! On 2017/3/14 5:24, Rafael J. Wysocki wrote: > On Monday, March 13, 2017 10:42:41 AM zhichang.yuan wrote: >> In commit 40e7fcb1929(ACPI: Add _DEP support to fix battery issue on Asus >> T100TA), the '_DEP' was supported to solve the dependency of Asus battery. But >> this patch is specific to Asus battery device. >> In the real world, there are other devices which need the dependency to play the >> role on the enumeration order. For example, all the Hip06 LPC >> periperals(IPMI-BT, uart, etc) must be scanned after the LPC host driver >> finished the probing. So, it makes sense to add a checking whether the ACPI >> device meet all the dependencies during its enumeration slot, if not, the >> enumeration will be delayed till all dependency master finish their work. >> >> This patch adds the dependency checking in ACPI enumeration, also the >> corresponding handling to retrigger the Hip06 LPC peripherals' scanning. > > AFAICS, _DEP is generally abused in the wild and cannot be made generic. Sorry. > >From the ACPI specification, _DEP is for operation region accesses. You are right... How about we add a ACPI handler for our LPC bus?? Just like amba. In this way, we also can solve the issue about LPC enumeration order. Thanks, Zhichang > Thanks, > Rafael > > > . > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
