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path: root/src/drivers/intel/usb4
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2021-01-22drivers/intel/usb4: Enable retimer FW upgrade mux interactionBrandon Breitenstein
In order to update the BB retimers for usb4/tbt they need to be turned on and into TBT mode. Expand the current DSM to allow for the use of an EC RAM byte RFWU to get the current state of each port and whether or not it has a retimer. It also allows Kernel to issue state transitions for the retimer to be put into TBT mode for firmware update. BUG=b:162528867 TEST=Along with work in progress kernel and EC patches, the Retimer firmware update is verified under device attached and no device attached scenarios. Change-Id: I768cfb56790049c231173b0ea0f8e08fe6b64b93 Signed-off-by: Brandon Breitenstein <brandon.breitenstein@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/48630 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2020-11-09acpi: Call acpi_fill_ssdt() only for enabled devicesKarthikeyan Ramasubramanian
Individual drivers check whether the concerned device is enabled before filling in the SSDT. Move the check before calling acpi_fill_ssdt() and remove the check in the individual drivers. BUG=None TEST=util/abuild/abuild Change-Id: Ib042bec7e8c68b38fafa60a8e965d781bddcd1f0 Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47148 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Christian Walter <christian.walter@9elements.com>
2020-10-19drivers/intel/usb4: Add driver for USB4 retimer deviceDuncan Laurie
The USB4 retimer device needs to declare a _DSM with specific functions that allow for GPIO control to turn off the power when an external device is not connected. This driver allows the mainboard to provide the GPIO that is connected to the power control. BUG=b:156957424 Change-Id: Icfb85dc3c0885d828aba3855a66109043250ab86 Signed-off-by: Duncan Laurie <dlaurie@google.com> Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44918 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>