| Message ID | 20230906105904.1477021-2-o.rempel@pengutronix.de (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: dsa: microchip: add drive strength support | expand |
On Wed, Sep 06, 2023 at 12:59:03PM +0200, Oleksij Rempel wrote: > Extend device tree bindings to support drive strength configuration for the > ksz* switches. Introduced properties: > - microchip,hi-drive-strength-microamp: Controls the drive strength for > high-speed interfaces like GMII/RGMII and more. > - microchip,lo-drive-strength-microamp: Governs the drive strength for > low-speed interfaces such as LEDs, PME_N, and others. > - microchip,io-drive-strength-microamp: Controls the drive strength for > for undocumented Pads on KSZ88xx variants. > > Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> > --- > .../bindings/net/dsa/microchip,ksz.yaml | 23 +++++++++++++++++++ > 1 file changed, 23 insertions(+) > > diff --git a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml > index e51be1ac03623..66bd770839d50 100644 > --- a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml > +++ b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml > @@ -49,6 +49,29 @@ properties: > Set if the output SYNCLKO clock should be disabled. Do not mix with > microchip,synclko-125. > > + microchip,io-drive-strength-microamp: > + description: > + IO Pad Drive Strength > + minimum: 8000 > + maximum: 16000 > + default: 16000 You should list the valid values, using the syntax: enum: [ 250, 500, 750, 1000, ...]; Andrew --- pw-bot: cr
diff --git a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml index e51be1ac03623..66bd770839d50 100644 --- a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml +++ b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml @@ -49,6 +49,29 @@ properties: Set if the output SYNCLKO clock should be disabled. Do not mix with microchip,synclko-125. + microchip,io-drive-strength-microamp: + description: + IO Pad Drive Strength + minimum: 8000 + maximum: 16000 + default: 16000 + + microchip,hi-drive-strength-microamp: + description: + High Speed Drive Strength. Controls drive strength of GMII / RGMII / + MII / RMII (except TX_CLK/REFCLKI, COL and CRS) and CLKO_25_125 lines. + minimum: 2000 + maximum: 28000 + default: 24000 + + microchip,lo-drive-strength-microamp: + description: + Low Speed Drive Strength. Controls drive strength of TX_CLK / REFCLKI, + COL, CRS, LEDs, PME_N, NTRP_N, SDO and SDI/SDA/MDIO lines. + minimum: 2000 + maximum: 28000 + default: 8000 + required: - compatible - reg
Extend device tree bindings to support drive strength configuration for the ksz* switches. Introduced properties: - microchip,hi-drive-strength-microamp: Controls the drive strength for high-speed interfaces like GMII/RGMII and more. - microchip,lo-drive-strength-microamp: Governs the drive strength for low-speed interfaces such as LEDs, PME_N, and others. - microchip,io-drive-strength-microamp: Controls the drive strength for for undocumented Pads on KSZ88xx variants. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> --- .../bindings/net/dsa/microchip,ksz.yaml | 23 +++++++++++++++++++ 1 file changed, 23 insertions(+)