| Message ID | 20210929163847.2807812-15-maz@kernel.org (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Lorenzo Pieralisi |
| Headers | show |
| Series | PCI: Add support for Apple M1 | expand |
On 30/09/2021 01.38, Marc Zyngier wrote: > At the moment, all the Minis running Linux have the same MAC > address (00:10:18:00:00:00), which is a bit annoying. > > Expose the PCI node corresponding to the Ethernet device, and > declare a 'local-mac-address' property. The bootloader will update > it (m1n1 already has the required feature). And if it doesn't, then > the default value is already present in the DT. > > This relies on forcing the bus number for each port so that the > endpoints connected to them are correctly numbered (and keeps dtc > quiet). > > Signed-off-by: Marc Zyngier <maz@kernel.org> > --- > arch/arm64/boot/dts/apple/t8103-j274.dts | 23 +++++++++++++++++++++++ > 1 file changed, 23 insertions(+) > Acked-by: Hector Martin <marcan@marcan.st>
diff --git a/arch/arm64/boot/dts/apple/t8103-j274.dts b/arch/arm64/boot/dts/apple/t8103-j274.dts index e0f6775b9878..33a80f9501dc 100644 --- a/arch/arm64/boot/dts/apple/t8103-j274.dts +++ b/arch/arm64/boot/dts/apple/t8103-j274.dts @@ -17,6 +17,7 @@ / { aliases { serial0 = &serial0; + ethernet0 = ðernet0; }; chosen { @@ -43,3 +44,25 @@ memory@800000000 { &serial0 { status = "okay"; }; + +/* + * Force the bus number assignments so that we can declare some of the + * on-board devices and properties that are populated by the bootloader + * (such as MAC addresses). + */ +&port00 { + bus-range = <1 1>; +}; + +&port01 { + bus-range = <2 2>; +}; + +&port02 { + bus-range = <3 3>; + ethernet0: pci@0,0 { + reg = <0x30000 0x0 0x0 0x0 0x0>; + /* To be filled by the loader */ + local-mac-address = [00 10 18 00 00 00]; + }; +};
At the moment, all the Minis running Linux have the same MAC address (00:10:18:00:00:00), which is a bit annoying. Expose the PCI node corresponding to the Ethernet device, and declare a 'local-mac-address' property. The bootloader will update it (m1n1 already has the required feature). And if it doesn't, then the default value is already present in the DT. This relies on forcing the bus number for each port so that the endpoints connected to them are correctly numbered (and keeps dtc quiet). Signed-off-by: Marc Zyngier <maz@kernel.org> --- arch/arm64/boot/dts/apple/t8103-j274.dts | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)