| Message ID | 20180501161227.2110-7-wens@csie.org |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | ARM: sun8i: r40: Add Ethernet support | expand |
On Wed, May 02, 2018 at 12:12:18AM +0800, Chen-Yu Tsai wrote: > 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(+) Reviewed-by: Rob Herring <robh@kernel.org> -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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.
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(+)