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author | Karthikeyan Ramasubramanian <kramasub@google.com> | 2020-10-05 10:44:50 -0600 |
---|---|---|
committer | Patrick Georgi <pgeorgi@google.com> | 2020-10-14 05:43:00 +0000 |
commit | 685dbe14e93104847f2a3b885d58aef4f8e67192 (patch) | |
tree | f0b5550b8fb585876e94dc07c379af120e931d0a /Documentation/COPYING | |
parent | ae763de649d7d8ebcc00f2e6792b37c4766e1047 (diff) |
acpi/device: Add GPIO binding property for an array of GPIOs
This change is required for use-cases like GPIO based I2C multiplexer
where more than one GPIOs are used as select lines.
BUG=b:169444894
TEST=Build and boot waddledee to OS. Ensure that the GPIO bindings for
an array of GPIOs are added to the ACPI table as follows:
Device (MUX0)
{
...
Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings
{
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.PCI0.GPIO", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0125
}
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.PCI0.GPIO", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0126
}
})
Name (_DSD, Package (0x02) // _DSD: Device-Specific Data
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") /* Device Properties for _DSD */,
Package (0x01)
{
Package (0x02)
{
"mux-gpios",
Package (0x08)
{
\_SB.PCI0.I2C3.MUX0,
Zero,
Zero,
Zero,
\_SB.PCI0.I2C3.MUX0,
One,
Zero,
Zero
}
}
}
})
}
Change-Id: I7c6cc36b1bfca2d48c84f169e6b43fd4be8ba330
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46056
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'Documentation/COPYING')
0 files changed, 0 insertions, 0 deletions