mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-07 20:58:14 -04:00
7ce236fafd
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@babayev.com>
Cc: xe-linux-external@cisco.com
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.