[PATCH net 2/2] net: dsa: mt7530: fix network connectivity with multiple CPU ports

[Florian Fainelli]

On 5/1/2023 5:15 AM, arinc9.unal at gmail.com wrote:
> From: Arınç ÜNAL <arinc.unal at arinc9.com>
> 
> On mt753x_cpu_port_enable() there's code that enables flooding for the CPU
> port only. Since mt753x_cpu_port_enable() runs twice when both CPU ports
> are enabled, port 6 becomes the only port to forward the frames to. But
> port 5 is the active port, so no frames received from the user ports will
> be forwarded to port 5 which breaks network connectivity.
> 
> Every bit of the BC_FFP, UNM_FFP, and UNU_FFP bits represents a port. Fix
> this issue by setting the bit that corresponds to the CPU port without
> overwriting the other bits.
> 
> Clear the bits beforehand only for the MT7531 switch. According to the
> documents MT7621 Giga Switch Programming Guide v0.3 and MT7531 Reference
> Manual for Development Board v1.0, after reset, the BC_FFP, UNM_FFP, and
> UNU_FFP bits are set to 1 for MT7531, 0 for MT7530.
> 
> Tested-by: Arınç ÜNAL <arinc.unal at arinc9.com>

This tag is implied by your Signed-off-by tag. No Fixes tag for this one?
-- 
Florian