On Tue, May 28, 2019 at 04:02:33PM -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} },
> },
> })
> }
>
> Device (PHY0)
> {
> Name (_HID, "PRP0001")
> Name (_DSD, Package ()
> {
> ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
> Package () {
> Package () { "compatible", "ethernet-phy-ieee802.3-c45" },
> Package () { "sfp", \_SB.PCI0.RP01.SFP0 },
> Package () { "managed", "in-band-status" },
> Package () { "phy-mode", "sgmii" },
> },
> })
> }
>
> Signed-off-by: Ruslan Babayev <ruslan@xxxxxxxxxxx>
> Cc: xe-linux-external@xxxxxxxxx
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Andrew
