[PATCH 4/9] ARM: dts: bcm2837: Add Raspberry Pi 3 B+

[Eric Anholt]

Stefan Wahren <stefan.wahren at i2se.com> writes:

> Hi Rob,
>
> Am 16.04.2018 um 22:43 schrieb Rob Herring:
>> On Fri, Apr 13, 2018 at 07:27:53PM +0200, Stefan Wahren wrote:
>>> The Raspberry Pi 3 B+ has the following major differences compared
>>> to the model 3 B:
>>> * Microchip LAN7515 (Gigabit Ethernet)
>>> * Cypress CYW43455 (802.11n/ac and BT 4.2)
>>>
>>> We need to add the USB LAN chip so the bootloader can add the MAC address.
>>> This is necessary because there ain't a EEPROM or a valid OTP.
>>>
>>> Signed-off-by: Phil Elwell <phil at raspberrypi.org>
>>> Signed-off-by: Stefan Wahren <stefan.wahren at i2se.com>
>>> ---
>>>   arch/arm/boot/dts/Makefile                 |   1 +
>>>   arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts | 108 +++++++++++++++++++++++++++++
>>>   arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi |  27 ++++++++
>>>   3 files changed, 136 insertions(+)
>>>   create mode 100644 arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
>>>   create mode 100644 arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
>>>
>>> ...
>>> diff --git a/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
>>> new file mode 100644
>>> index 0000000..169203c
>>> --- /dev/null
>>> +++ b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
>> Why the separate file? This can be shared?
>
> this comes from the assumption the RPi 3 B+ won't be the only RPi board 
> with a LAN7515. Should i fold it in the dts file as long as we don't 
> have a second board?

I think it's great as is -- our other network chips are hooked up this
way and it makes 3b+ match all the others.  Also, while I have no
specific knowledge, it seems likely that this would get reused.
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