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

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Date:   Wed,  2 May 2018 00:12:18 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Mark Brown <broonie@...nel.org>
Cc:     Chen-Yu Tsai <wens@...e.org>, linux-arm-kernel@...ts.infradead.org,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        netdev@...r.kernel.org, Corentin Labbe <clabbe.montjoie@...il.com>,
        Icenowy Zheng <icenowy@...c.io>
Subject: [PATCH net-next v2 06/15] dt-bindings: net: dwmac-sun8i: Add binding for GMAC on Allwinner R40 SoC

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@...e.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