[PATCH net-next v2 06/15] dt-bindings: net: dwmac-sun8i: Add binding for GMAC on Allwinner R40 SoC

Chen-Yu Tsai
2018-05-01T16:12:18Z

The Allwinner R40 SoC has the EMAC controller supported by dwmac-sun8i.
It is named "GMAC", while EMAC refers to the 10/100 Mbps Ethernet
controller supported by sun4i-emac. The controller is the same, but
the R40 has the glue layer controls in the clock control unit (CCU),
with a reduced RX delay chain, and no TX delay chain.

This patch adds the R40 specific bits to the dwmac-sun8i binding.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
Documentation/devicetree/bindings/net/dwmac-sun8i.txt | 3 +++
1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dwmac-sun8i.txt b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt
index 1c0906a5c02b..cfe724398a12 100644
--- a/Documentation/devicetree/bindings/net/dwmac-sun8i.txt
+++ b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt
@@ -7,6 +7,7 @@ Required properties:
- compatible: must be one of the following string:
"allwinner,sun8i-a83t-emac"
"allwinner,sun8i-h3-emac"
+ "allwinner,sun8i-r40-gmac"
"allwinner,sun8i-v3s-emac"
"allwinner,sun50i-a64-emac"
- reg: address and length of the register for the device.
@@ -25,8 +26,10 @@ Required properties:
Optional properties:
- allwinner,tx-delay-ps: TX clock delay chain value in ps.
Range is 0-700. Default is 0.
+ Unavailable for allwinner,sun8i-r40-gmac
- allwinner,rx-delay-ps: RX clock delay chain value in ps.
Range is 0-3100. Default is 0.
+ Range is 0-700 for allwinner,sun8i-r40-gmac
Both delay properties need to be a multiple of 100. They control the
clock delay for external RGMII PHY. They do not apply to the internal
PHY or external non-RGMII PHYs.
--
2.17.0