diff options
| -rw-r--r-- | Documentation/devicetree/bindings/net/mediatek-dwmac.txt | 31 |
1 files changed, 11 insertions, 20 deletions
diff --git a/Documentation/devicetree/bindings/net/mediatek-dwmac.txt b/Documentation/devicetree/bindings/net/mediatek-dwmac.txt index 4de479b4d44d..8a08621a5b54 100644 --- a/Documentation/devicetree/bindings/net/mediatek-dwmac.txt +++ b/Documentation/devicetree/bindings/net/mediatek-dwmac.txt @@ -22,33 +22,25 @@ Required properties: Optional properties: - mediatek,tx-delay-ps: TX clock delay macro value. Default is 0. - It should be defined for rgmii/rgmii-rxid/mii interface. + It should be defined for RGMII/MII interface. - mediatek,rx-delay-ps: RX clock delay macro value. Default is 0. - It should be defined for rgmii/rgmii-txid/mii/rmii interface. -Both delay properties need to be a multiple of 170 for fine-tune rgmii, -range 0~31*170. -Both delay properties need to be a multiple of 550 for coarse-tune rgmii, -range 0~31*550. -Both delay properties need to be a multiple of 550 for mii/rmii, -range 0~31*550. + It should be defined for RGMII/MII/RMII interface. +Both delay properties need to be a multiple of 170 for RGMII interface, +or will round down. Range 0~31*170. +Both delay properties need to be a multiple of 550 for MII/RMII interface, +or will round down. Range 0~31*550. -- mediatek,fine-tune: boolean property, if present indicates that fine delay - is selected for rgmii interface. - If present, tx-delay-ps/rx-delay-ps is 170+/-50ps per stage. - Else tx-delay-ps/rx-delay-ps of coarse delay macro is 0.55+/-0.2ns per stage. - This property do not apply to non-rgmii PHYs. - Only coarse-tune delay is supported for mii/rmii PHYs. -- mediatek,rmii-rxc: boolean property, if present indicates that the rmii +- mediatek,rmii-rxc: boolean property, if present indicates that the RMII reference clock, which is from external PHYs, is connected to RXC pin on MT2712 SoC. Otherwise, is connected to TXC pin. - mediatek,txc-inverse: boolean property, if present indicates that - 1. tx clock will be inversed in mii/rgmii case, + 1. tx clock will be inversed in MII/RGMII case, 2. tx clock inside MAC will be inversed relative to reference clock - which is from external PHYs in rmii case, and it rarely happen. + which is from external PHYs in RMII case, and it rarely happen. - mediatek,rxc-inverse: boolean property, if present indicates that - 1. rx clock will be inversed in mii/rgmii case. - 2. reference clock will be inversed when arrived at MAC in rmii case. + 1. rx clock will be inversed in MII/RGMII case. + 2. reference clock will be inversed when arrived at MAC in RMII case. - assigned-clocks: mac_main and ptp_ref clocks - assigned-clock-parents: parent clocks of the assigned clocks @@ -76,7 +68,6 @@ Example: mediatek,pericfg = <&pericfg>; mediatek,tx-delay-ps = <1530>; mediatek,rx-delay-ps = <1530>; - mediatek,fine-tune; mediatek,rmii-rxc; mediatek,txc-inverse; mediatek,rxc-inverse; |