OpenWrt – Rev 4
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From 6d5af7093aea4f18e040e73db2ad99aaa0c0f77e Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Sun, 19 Nov 2017 11:04:23 +0100
Subject: [PATCH] ARM: dts: Add ethernet to a bunch of platforms
These platforms have the PHY defined already so we just
need to add a single device node to each of them to activate
the ethernet device.
The PHY skew/delay settings for pin control is known from a
few vendor trees and old OpenWRT patch sets.
This is a modified version of upstream commit
95220046a62c00b5afb1aa7c1971989d427db977,
just dropping the NAS4220B changes.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
arch/arm/boot/dts/gemini-dlink-dns-313.dts | 62 ++++++++++++++++++++++++++++++
arch/arm/boot/dts/gemini-wbd222.dts | 7 ++++
2 files changed, 69 insertions(+)
--- a/arch/arm/boot/dts/gemini-dlink-dns-313.dts
+++ b/arch/arm/boot/dts/gemini-dlink-dns-313.dts
@@ -215,6 +215,56 @@
groups = "gpio1dgrp";
};
};
+ pinctrl-gmii {
+ mux {
+ function = "gmii";
+ groups = "gmii_gmac0_grp";
+ };
+ /*
+ * In the vendor Linux tree, these values are set for the C3
+ * version of the SL3512 ASIC with the comment "benson suggest"
+ */
+ conf0 {
+ pins = "R8 GMAC0 RXDV", "U11 GMAC1 RXDV";
+ skew-delay = <0>;
+ };
+ conf1 {
+ pins = "T8 GMAC0 RXC";
+ skew-delay = <10>;
+ };
+ conf2 {
+ pins = "T11 GMAC1 RXC";
+ skew-delay = <15>;
+ };
+ conf3 {
+ pins = "P8 GMAC0 TXEN", "V11 GMAC1 TXEN";
+ skew-delay = <7>;
+ };
+ conf4 {
+ pins = "V7 GMAC0 TXC", "P10 GMAC1 TXC";
+ skew-delay = <10>;
+ };
+ conf5 {
+ /* The data lines all have default skew */
+ pins = "U8 GMAC0 RXD0", "V8 GMAC0 RXD1",
+ "P9 GMAC0 RXD2", "R9 GMAC0 RXD3",
+ "R11 GMAC1 RXD0", "P11 GMAC1 RXD1",
+ "V12 GMAC1 RXD2", "U12 GMAC1 RXD3",
+ "R10 GMAC1 TXD0", "T10 GMAC1 TXD1",
+ "U10 GMAC1 TXD2", "V10 GMAC1 TXD3";
+ skew-delay = <7>;
+ };
+ conf6 {
+ pins = "U7 GMAC0 TXD0", "T7 GMAC0 TXD1",
+ "R7 GMAC0 TXD2", "P7 GMAC0 TXD3";
+ skew-delay = <5>;
+ };
+ /* Set up drive strength on GMAC0 to 16 mA */
+ conf7 {
+ groups = "gmii_gmac0_grp";
+ drive-strength = <16>;
+ };
+ };
};
};
@@ -235,6 +285,18 @@
pinctrl-0 = <&gpio1_default_pins>;
};
+ ethernet@60000000 {
+ status = "okay";
+
+ ethernet-port@0 {
+ phy-mode = "rgmii";
+ phy-handle = <&phy0>;
+ };
+ ethernet-port@1 {
+ /* Not used in this platform */
+ };
+ };
+
ata@63000000 {
status = "okay";
};
--- a/arch/arm/boot/dts/gemini-wbd222.dts
+++ b/arch/arm/boot/dts/gemini-wbd222.dts
@@ -136,6 +136,13 @@
"gpio0bgrp";
};
};
+ pinctrl-gmii {
+ /* This platform use both the ethernet ports */
+ mux {
+ function = "gmii";
+ groups = "gmii_gmac0_grp", "gmii_gmac1_grp";
+ };
+ };
};
};