gemini: add 4.14 support

This adds the patches to get fairly complete Gemini support
using kernel v4.14. It is mainly a backport of patches from
kernel v4.16 with omissions of things like graphics that require
substantial changes and will be better handled once we move
to the v4.16 kernel proper.
On top of this are some WIP patches for USB support.

Tested on Raidsonic NAS4220B and D-link DNS-313.

ChangeLog v4->v5:
- Fix ethernet single gmac usecase
- Fix USB reset (patch from Hans)
- Fix Raidsonic ethernet skew delay
- Fix kernel config (bridge, squashfs, jffs2, usb)
- Disable second usb port on Raidsonic board until fotg210_hcd is fixed

ChangeLog v3->v4:
- Make sure to use tabs rather than spaces in base-files.
- Use the dns313 image tool from the firmware-utils.
- Break out the addition of the v4.14 patches and the removal
  of the v4.4 patches to separate (big) patches.

ChangeLog v2->v3:
- Update the kernel config as indicated by Hauke Martens:
- Regenerate again after rebasing using kernel_oldconfig
  dropping a few optimization settings that are now generic
- Drop CFG80211 stuff (module)
- Drop CIFS stuff (module)
- Drop MAC80211 (module)
- Drop wireless drivers (module)
- Enabled OverlayFS
- Added proper DNS-313 boot image generation with the special
  file header tool.
- Disable CMA in the kernel
- Enable LZMA compression of the kernel
- Consequently name the nas4220b images nas4220b
- Update preinit MAC detection script to handle also DNS-313
- Add board.d/03_hdparm to set the disk to spin down after
  1 minute by default, if we have the hdparm tool installed

ChangeLog v1->v2:
- Processed config through kernel_oldconfig
- Processed patches through make target/linux/{clean,refresh} V=99

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Roman Yeryomin <roman@advem.lv>

1 files changed, 74 insertions, 0 deletions

diff --git a/target/linux/gemini/patches-4.14/0023-ARM-dts-Add-ethernet-to-the-Gemini-SoC.patch b/target/linux/gemini/patches-4.14/0023-ARM-dts-Add-ethernet-to-the-Gemini-SoC.patch
new file mode 100644
index 0000000000..0960f6bfdd
--- /dev/null
+++ b/target/linux/gemini/patches-4.14/0023-ARM-dts-Add-ethernet-to-the-Gemini-SoC.patch
@@ -0,0 +1,74 @@
+From 860005c1a2f16aaa33458a7d80c9728b710ae292 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <linus.walleij@linaro.org>
+Date: Mon, 6 Nov 2017 00:05:28 +0100
+Subject: [PATCH 23/31] ARM: dts: Add ethernet to the Gemini SoC
+
+This adds the Gemini ethernet node to the Gemini SoC.
+
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ arch/arm/boot/dts/gemini.dtsi | 44 ++++++++++++++++++++++++++++++++++++++++++-
+ 1 file changed, 43 insertions(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/gemini.dtsi
++++ b/arch/arm/boot/dts/gemini.dtsi
+@@ -114,9 +114,16 @@
+ 					};
+ 				};
+ 				gmii_default_pins: pinctrl-gmii {
++					/*
++					 * Only activate GMAC0 by default since
++					 * GMAC1 will overlap with 8 GPIO lines
++					 * gpio2a, gpio2b. Overlay groups with
++					 * "gmii_gmac0_grp", "gmii_gmac1_grp" for
++					 * both ethernet interfaces.
++					 */
+ 					mux {
+ 						function = "gmii";
+-						groups = "gmiigrp";
++						groups = "gmii_gmac0_grp";
+ 					};
+ 				};
+ 				pci_default_pins: pinctrl-pci {
+@@ -316,6 +323,41 @@
+ 			};
+ 		};
+ 
++		ethernet@60000000 {
++			compatible = "cortina,gemini-ethernet";
++			reg = <0x60000000 0x4000>, /* Global registers, queue */
++			      <0x60004000 0x2000>, /* V-bit */
++			      <0x60006000 0x2000>; /* A-bit */
++			pinctrl-names = "default";
++			pinctrl-0 = <&gmii_default_pins>;
++			status = "disabled";
++			#address-cells = <1>;
++			#size-cells = <1>;
++			ranges;
++
++			gmac0: ethernet-port@0 {
++				compatible = "cortina,gemini-ethernet-port";
++				reg = <0x60008000 0x2000>, /* Port 0 DMA/TOE */
++				      <0x6000a000 0x2000>; /* Port 0 GMAC */
++				interrupt-parent = <&intcon>;
++				interrupts = <1 IRQ_TYPE_LEVEL_HIGH>;
++				resets = <&syscon GEMINI_RESET_GMAC0>;
++				clocks = <&syscon GEMINI_CLK_GATE_GMAC0>;
++				clock-names = "PCLK";
++			};
++
++			gmac1: ethernet-port@1 {
++				compatible = "cortina,gemini-ethernet-port";
++				reg = <0x6000c000 0x2000>, /* Port 1 DMA/TOE */
++				      <0x6000e000 0x2000>; /* Port 1 GMAC */
++				interrupt-parent = <&intcon>;
++				interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
++				resets = <&syscon GEMINI_RESET_GMAC1>;
++				clocks = <&syscon GEMINI_CLK_GATE_GMAC1>;
++				clock-names = "PCLK";
++			};
++		};
++
+ 		ata@63000000 {
+ 			compatible = "cortina,gemini-pata", "faraday,ftide010";
+ 			reg = <0x63000000 0x1000>;