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authorBiao Huang <biao.huang@mediatek.com>2018-12-19 15:22:40 +0800
committerDavid S. Miller <davem@davemloft.net>2018-12-19 16:24:58 -0800
commita32ed90be22aa565cf623da5a211b4a968dec6e0 (patch)
tree0d423490254066ed0031fcecd7111b4b7ee781bc /Documentation/devicetree/bindings
parentMerge branch 'neigh-get-support' (diff)
downloadlinux-dev-a32ed90be22aa565cf623da5a211b4a968dec6e0.tar.xz
linux-dev-a32ed90be22aa565cf623da5a211b4a968dec6e0.zip
net-next: dt-binding: dwmac-mediatek: remove fine-tune property
remove fine-tune property in device tree, modify the corresponding description in dt-binding. Signed-off-by: Biao Huang <biao.huang@mediatek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/devicetree/bindings')
-rw-r--r--Documentation/devicetree/bindings/net/mediatek-dwmac.txt31
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;