The MAX98373 smart speaker amp can be connected over SoundWire and be
configured for mainboards to use:
- Data Port 0 and Bulk Register Access is not supported
- Data Port 1 is the 32bit data input for the speaker path
- Data Port 3 is the 16bit data output for I/V sense ADC path
The data port and audio mode properties are filled out as best as
possible with the datasheet as a reference.
The ACPI address for the codec is calculated with the information in
the codec driver combined with the devicetree.cb hierarchy where the
link and unique IDs are extracted from the device path.
For example this device is connected to master link ID 1 and has strap
settings configuring it for unique ID 3.
chip drivers/soundwire/max98373
register "desc" = ""Left Speaker Amp""
device generic 1.3 on end
end
This driver was tested with the volteer reference design by booting
and disassembling the runtime SSDT to ensure that the devices have the
expected address and properties.
Device (SW13)
{
Name (_ADR, 0x000123019F837300)
Name (_DDN, "Left Speaker Amp")
Method (_STA)
{
Return (0x0F)
}
Name (_DSD, Package ()
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () { "mipi-sdw-sw-interface-revision", 0x00010000 },
[...]
},
ToUUID ("dbb8e3e6-5886-4ba6-8795-1319f52a966b"),
Package () {
Package () { "mipi-sdw-port-audio-mode-0", "MOD0" },
Package () { "mipi-sdw-dp-1-sink-subproperties", "SNK1" },
Package () { "mipi-sdw-dp-3-source-subproperties", "SRC3" },
}
}
Name (MOD0, Package ()
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () {
"mipi-sdw-audio-mode-bus-frequency-configs",
Package () { 0x00753000, [...] }
},
[...]
}
}
Name (SNK1, Package ()
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () { "mipi-sdw-data-port-type", Zero },
[...]
},
ToUUID ("dbb8e3e6-5886-4ba6-8795-1319f52a966b"),
Package () {
Package () { "mipi-sdw-port-audio-mode-0", "MOD0" }
}
}
Name (SRC3, Package ()
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () { "mipi-sdw-data-port-type", Zero },
[...]
},
ToUUID ("dbb8e3e6-5886-4ba6-8795-1319f52a966b"),
Package () {
Package () { "mipi-sdw-port-audio-mode-0", "MOD0" }
}
}
}
BUG=b:146482091
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Change-Id: I3f8cb2779ddde98c5df739bd8a1e83a12a305c00
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40890
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This header implements structures to describe the properties defined in
the SoundWire Discovery and Configuration Specification Version 1.0.
By itself this just provides the property definitions, it is then used
by the code that generates ACPI device properties and by the controller
and codec drivers.
A new header for MIPI vendor/device IDs is also added, with the MIPI
Alliance board members added by default. This will be used in the same
way as pci_ids.h to track devices added to coreboot.
BUG=b:146482091
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Change-Id: Ie9901d26d1efe68edad7c049c98a976c4e4f06f4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40883
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
