[PATCH] ARM: dts: BCM5301X: Add DT for Asus RT-AC88U

[Arınç ÜNAL]

On 25/09/2021 00:20, Florian Fainelli wrote:
> On 9/24/21 2:02 PM, Arınç ÜNAL wrote:
>> Quoting Documentation/devicetree/bindings/net/dsa/realtek-smi.txt for
>> further reference.
>>
>>> Realtek SMI-based Switches
>>> ==========================
>>>
>>> The SMI "Simple Management Interface" is a two-wire protocol using
>>> bit-banged GPIO that while it reuses the MDIO lines MCK and MDIO does
>>> not use the MDIO protocol. This binding defines how to specify the
>>> SMI-based Realtek devices.
> 
> Ah this is the key here, using the MDIO controller won't work sorry
> about misleading you. I suppose you will have to go back to the previous
> Device Tree representation you had, but change the dsa,member property
> and then you should be in business baring additional bugs/features.
> 

All good. After fixing "dsa,member" on the original specification, the 
log slightly changed. I'm going to see if I can switch to the net-next 
kernel on OpenWrt to test the driver further. Something might be wrong 
with my backport.

[    1.377530] realtek-smi switch at 1: failed to get RESET GPIO
---
[    2.759267] realtek-smi switch at 1: deasserted RESET
[    2.764927] realtek-smi switch at 1: found an RTL8365MB-VC switch 
(ver=0x0040)
[    2.771956] realtek-smi switch at 1: unable to register switch ret = -517
---
[    3.149262] realtek-smi switch at 1: deasserted RESET
[    3.154906] realtek-smi switch at 1: found an RTL8365MB-VC switch 
(ver=0x0040)
[    3.287052] realtek-smi switch at 1: failed to get parent irq: -22
[    3.293060] realtek-smi switch at 1: no interrupt support
[    3.298211] realtek-smi switch at 1: no MDIO bus node
[    3.303025] realtek-smi switch at 1: could not set up MDIO bus
[    3.308648] realtek-smi switch at 1: unable to register switch ret = -19