On Mon, Aug 01, 2022 at 12:36:30PM +0200, Sven Peter wrote: > These chips are combined Wi-Fi/Bluetooth radios which expose a > PCI subfunction for the Bluetooth part. > They are found in Apple machines such as the x86 models with the T2 > chip or the arm64 models with the M1 or M2 chips. > > Signed-off-by: Sven Peter <sven@xxxxxxxxxxxxx> > --- > .../bindings/net/brcm,bcm4377-bluetooth.yaml | 77 +++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 78 insertions(+) > create mode 100644 Documentation/devicetree/bindings/net/brcm,bcm4377-bluetooth.yaml > > diff --git a/Documentation/devicetree/bindings/net/brcm,bcm4377-bluetooth.yaml b/Documentation/devicetree/bindings/net/brcm,bcm4377-bluetooth.yaml > new file mode 100644 > index 000000000000..afe6ecebd939 > --- /dev/null > +++ b/Documentation/devicetree/bindings/net/brcm,bcm4377-bluetooth.yaml > @@ -0,0 +1,77 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/net/brcm,bcm4377-bluetooth.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Broadcom BCM4377 family PCI Bluetooth Chips > + > +allOf: > + - $ref: bluetooth-controller.yaml# > + > +maintainers: > + - Sven Peter <sven@xxxxxxxxxxxxx> > + > +description: > + This binding describes Broadcom BCM4377 family PCI-attached bluetooth chips s/PCI/PCIe/ > + usually found in Apple machines. The Wi-Fi part of the chip is described in > + bindings/net/wireless/brcm,bcm4329-fmac.yaml. > + > +properties: > + compatible: > + enum: > + - pci14e4,5fa0 # BCM4377 > + - pci14e4,5f69 # BCM4378 > + - pci14e4,5f71 # BCM4387 > + > + reg: > + description: PCI device identifier. > + > + brcm,board-type: > + $ref: /schemas/types.yaml#/definitions/string > + description: Board type of the Bluetooth chip. This is used to decouple > + the overall system board from the Bluetooth module and used to construct > + firmware and calibration data filenames. > + On Apple platforms, this should be the Apple module-instance codename > + prefixed by "apple,", e.g. "apple,atlantisb". pattern: '^apple,.*' And when there's other known vendors we can add them. Really, I'm not all that crazy about this property. 'firmware-name' doesn't work? Or perhaps this should just be a more specific compatible string. > + > + brcm,taurus-cal-blob: > + $ref: /schemas/types.yaml#/definitions/uint8-array > + description: A per-device calibration blob for the Bluetooth radio. This > + should be filled in by the bootloader from platform configuration > + data, if necessary, and will be uploaded to the device. > + This blob is used if the chip stepping of the Bluetooth module does not > + support beamforming. > + > + brcm,taurus-bf-cal-blob: > + $ref: /schemas/types.yaml#/definitions/uint8-array > + description: A per-device calibration blob for the Bluetooth radio. This > + should be filled in by the bootloader from platform configuration > + data, if necessary, and will be uploaded to the device. > + This blob is used if the chip stepping of the Bluetooth module supports > + beamforming. > + > + local-bd-address: true > + > +required: > + - compatible > + - reg > + - local-bd-address > + - brcm,board-type > + > +additionalProperties: false > + > +examples: > + - | > + pci0 { pcie { > + #address-cells = <3>; > + #size-cells = <2>; > + > + bluetooth@0,1 { > + compatible = "pci14e4,5f69"; > + reg = <0x10100 0x0 0x0 0x0 0x0>; reg should not have the bus number here as that is dynamic. So 0x100 for the 1st cell. > + brcm,board-type = "apple,honshu"; > + /* To be filled by the bootloader */ > + local-bd-address = [00 00 00 00 00 00]; > + }; > + }; > diff --git a/MAINTAINERS b/MAINTAINERS > index a6d3bd9d2a8d..8965556bace8 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -1837,6 +1837,7 @@ F: Documentation/devicetree/bindings/interrupt-controller/apple,* > F: Documentation/devicetree/bindings/iommu/apple,dart.yaml > F: Documentation/devicetree/bindings/iommu/apple,sart.yaml > F: Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml > +F: Documentation/devicetree/bindings/net/brcm,bcm4377-bluetooth.yaml > F: Documentation/devicetree/bindings/nvme/apple,nvme-ans.yaml > F: Documentation/devicetree/bindings/nvmem/apple,efuses.yaml > F: Documentation/devicetree/bindings/pci/apple,pcie.yaml > -- > 2.25.1 > >
