On Fri, 10 Jun 2022 19:05:40 +0200, Frank Wunderlich wrote: > From: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx> > > A board may have no independent reset-line, so reset cannot be used > inside switch driver. > > E.g. on Bananapi-R2 Pro switch and gmac are connected to same reset-line. > > Resets should be acquired only to 1 device/driver. This prevents reset to > be bound to switch-driver if reset is already used for gmac. If reset is > only used by switch driver it resets the switch *and* the gmac after the > mdio bus comes up resulting in mdio bus goes down. It takes some time > until all is up again, switch driver tries to read from mdio, will fail > and defer the probe. On next try the reset does the same again. > > Make reset optional for such boards. > > Allow port 5 as cpu-port and phy-mode rgmii for mt7531. > > - MT7530 supports RGMII on port 5 and RGMII/TRGMII on port 6. > - MT7531 supports on port 5 RGMII and SGMII (dual-sgmii) and > SGMII on port 6. > > Signed-off-by: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx> > --- > v4: > - add port 5 as CPU-Port > - change description > --- > .../devicetree/bindings/net/dsa/mediatek,mt7530.yaml | 8 +++----- > 1 file changed, 3 insertions(+), 5 deletions(-) > Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
