> -----Original Message----- > From: Maxim Uvarov [mailto:muva...@gmail.com] > Sent: Friday, September 08, 2017 12:00 PM > To: Florian Fainelli > Cc: Tristram Ha - C24268; Andrew Lunn; Pavel Machek; Nathan Conrad; Vivien > Didelot; netdev; linux-kernel@vger.kernel.org; Woojung Huh - C21699 > Subject: Re: [PATCH RFC] Update documentation for KSZ DSA drivers so that new > drivers can be added > > 2017-09-08 21:48 GMT+03:00 Florian Fainelli <f.faine...@gmail.com>: > > On 09/07/2017 02:11 PM, tristram...@microchip.com wrote: > >> From: Tristram Ha <tristram...@microchip.com> > >> > >> Add other KSZ switches support so that patch check does not complain. > >> > >> Signed-off-by: Tristram Ha <tristram...@microchip.com> > >> --- > >> Documentation/devicetree/bindings/net/dsa/ksz.txt | 117 > >> ++++++++++++---------- > >> 1 file changed, 62 insertions(+), 55 deletions(-) > >> > >> diff --git a/Documentation/devicetree/bindings/net/dsa/ksz.txt > >> b/Documentation/devicetree/bindings/net/dsa/ksz.txt > >> index 0ab8b39..34af0e0 100644 > >> --- a/Documentation/devicetree/bindings/net/dsa/ksz.txt > >> +++ b/Documentation/devicetree/bindings/net/dsa/ksz.txt > >> @@ -3,8 +3,15 @@ Microchip KSZ Series Ethernet switches > >> > >> Required properties: > >> > >> -- compatible: For external switch chips, compatible string must be > >> exactly one > >> - of: "microchip,ksz9477" > >> +- compatible: Should be "microchip,ksz9477" for KSZ9477 chip, > >> + "microchip,ksz8795" for KSZ8795 chip, > >> + "microchip,ksz8794" for KSZ8794 chip, > >> + "microchip,ksz8765" for KSZ8765 chip, > >> + "microchip,ksz8895" for KSZ8895 chip, > >> + "microchip,ksz8864" for KSZ8864 chip, > >> + "microchip,ksz8873" for KSZ8873 chip, > >> + "microchip,ksz8863" for KSZ8863 chip, > >> + "microchip,ksz8463" for KSZ8463 chip > > > > > Tristram, does any of this devices support chaining? > > Maxim.
They do not if you mean daisy-chaining the switches together. There is always a problem that once tail tagging mode is enabled sending a frame through the MAC without going through the DSA layer will cause the frame to be dropped.
