diff options
Diffstat (limited to 'zephyr/dts/bindings/usbc/cros-ec,usb-mux-chain.yaml')
| -rw-r--r-- | zephyr/dts/bindings/usbc/cros-ec,usb-mux-chain.yaml | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/zephyr/dts/bindings/usbc/cros-ec,usb-mux-chain.yaml b/zephyr/dts/bindings/usbc/cros-ec,usb-mux-chain.yaml new file mode 100644 index 0000000000..398d7255ac --- /dev/null +++ b/zephyr/dts/bindings/usbc/cros-ec,usb-mux-chain.yaml @@ -0,0 +1,47 @@ +# Copyright 2022 The Chromium OS Authors. All rights reserved. +# Use of this source code is governed by a BSD-style license that can be +# found in the LICENSE file. + +description: USB-C muxes chain + +compatible: "cros-ec,usb-mux-chain" + +properties: + usb-muxes: + type: phandles + required: true + description: | + List of USB-C muxes and retimers for the USB-C port. The USB-C subsystem + traverses this list in the order specified. The phandles are references to + cros-ec,usbc-mux nodes. Link this mux chain with a specific USB-C port by + adding the "cros-ec,usb-mux-chain" as a child of the "named-usbc-port" + node. + + alternative-chain: + type: boolean + description: | + Set if this is alternative USB-C muxes chain. It can be selected in + runtime using USB_MUX_ENABLE_ALTERNATIVE macro. + +# Example DTS defining USB-C port 0 with main and alternative usb mux chains. +# The main chain has two muxes: BB retimer and virtual mux. +# The alternative chain has three muxes: BB retimer, SOC side BB retimer and +# virtual mux. +# +# usbc_port0: port0@0 { +# compatible = "named-usbc-port"; +# reg = <0>; +# ... +# usb-mux-chain-0 { +# compatible = "cros-ec,usb-mux-chain"; +# usb-muxes = <&usb_c0_bb_retimer +# &virtual_mux_c0>; +# }; +# usb-mux-chain-0 { +# compatible = "cros-ec,usb-mux-chain"; +# alternative-chain; +# usb-muxes = <&usb_c0_bb_retimer +# &usb_c0_soc_side_bb_retimer +# &virtual_mux_c0>; +# }; +# }; |