On Mon, May 06, 2019 at 05:35:57PM -0700, Ruslan Babayev wrote: > Lookup I2C adapter using the "i2c-bus" device property on ACPI based > systems similar to how it's done with DT. > > An example DSD describing an SFP on an ACPI based system: > > Device (SFP0) > { > Name (_HID, "PRP0001") > Name (_CRS, ResourceTemplate() > { > GpioIo(Exclusive, PullDefault, 0, 0, IoRestrictionNone, > "\\_SB.PCI0.RP01.GPIO", 0, ResourceConsumer) > { 0, 1, 2, 3, 4 } > }) > Name (_DSD, Package () > { > ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), > Package () { > Package () { "compatible", "sff,sfp" }, > Package () { "i2c-bus", \_SB.PCI0.RP01.I2C.MUX.CH0 }, > Package () { "maximum-power-milliwatt", 1000 }, > Package () { "tx-disable-gpios", Package () { ^SFP0, 0, 0, 1} }, > Package () { "reset-gpio", Package () { ^SFP0, 0, 1, 1} }, > Package () { "mod-def0-gpios", Package () { ^SFP0, 0, 2, 1} }, > Package () { "tx-fault-gpios", Package () { ^SFP0, 0, 3, 0} }, > Package () { "los-gpios", Package () { ^SFP0, 0, 4, 1} }, > }, As i said before, i know ~0 about ACPI. Does devm_gpiod_get() just work for ACPI? Thanks Andrew