On Wed, Jun 12, 2019 at 04:37:09PM +0000, Schmauss, Erik wrote: > > > > -----Original Message----- > > From: linux-acpi-owner@xxxxxxxxxxxxxxx [mailto:linux-acpi- > > owner@xxxxxxxxxxxxxxx] On Behalf Of Udit Kumar > > Sent: Wednesday, June 12, 2019 4:48 AM > > To: ACPI Devel Maling List <linux-acpi@xxxxxxxxxxxxxxx> > > Cc: lenb@xxxxxxxxxx; Rafael J. Wysocki <rafael@xxxxxxxxxx> > > Subject: Help on named object in kernel > > > > Dear ACPI experts, > > I need your help on defining named objected in ACPI under _CRS. > > In my firmware, I have defined two addresses for my device using > > Memory32Fixed and QwordMemory under _CRS. > > These two addresses are 32-bit and 64-bit long respectively. > > For Memory32Fixed, I gave DescriptorName name as REG0 and for > > QwordMemory I gave DescriptorName as SATA. > > Could you give us the ASL for the code snippet that you're talking about? > IIUC, something like below(a very rough example based on the description above): Name (_CRS, ResourceTemplate (){ QwordMemory ( ResourceConsumer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite, 0x0, 0x700100520, 0x700100523, 0x0, 4, , , "SATA",) Memory32Fixed(ReadWrite, 0x3200000, 0x10000, "REG0") } Basically 2 or more entries of Memory/Address Space Resource Descriptor which can be identified in OSPM by DescriptorName. IOW if a device has 2 sets of registers/memory/address space associated with it, instead of relying on the order of declaration, identify them by the descriptor name provided in ASL namespace. -- Regards, Sudeep
