Discussion:
[PATCH] gemini: Add ethernet to DNS-313 and Wiliboard
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Linus Walleij
2018-05-02 16:39:35 UTC
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This adds an interrim patch for v4.14 based on an
upstream commit to get ethernet working on D-Link DNS-313
(probably also on the Wiliboards)

Signed-off-by: Linus Walleij <***@linaro.org>
---
...-dts-Add-ethernet-to-a-bunch-of-platforms.patch | 123 +++++++++++++++++++++
1 file changed, 123 insertions(+)
create mode 100644 target/linux/gemini/patches-4.14/0034-ARM-dts-Add-ethernet-to-a-bunch-of-platforms.patch

diff --git a/target/linux/gemini/patches-4.14/0034-ARM-dts-Add-ethernet-to-a-bunch-of-platforms.patch b/target/linux/gemini/patches-4.14/0034-ARM-dts-Add-ethernet-to-a-bunch-of-platforms.patch
new file mode 100644
index 000000000000..4a511a28669a
--- /dev/null
+++ b/target/linux/gemini/patches-4.14/0034-ARM-dts-Add-ethernet-to-a-bunch-of-platforms.patch
@@ -0,0 +1,123 @@
+From 6d5af7093aea4f18e040e73db2ad99aaa0c0f77e Mon Sep 17 00:00:00 2001
+From: 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 <***@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(+)
+
+diff --git a/arch/arm/boot/dts/gemini-dlink-dns-313.dts b/arch/arm/boot/dts/gemini-dlink-dns-313.dts
+index 685719a0b8c0..df46375457b6 100644
+--- 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>;
+ };
+
++ ***@60000000 {
++ status = "okay";
++
++ ethernet-***@0 {
++ phy-mode = "rgmii";
++ phy-handle = <&phy0>;
++ };
++ ethernet-***@1 {
++ /* Not used in this platform */
++ };
++ };
++
+ ***@63000000 {
+ status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/gemini-wbd222.dts b/arch/arm/boot/dts/gemini-wbd222.dts
+index 0678d3beb51d..820978d20166 100644
+--- 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";
++ };
++ };
+ };
+ };
+
+--
+2.14.3
+
--
2.14.3
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