gemini: Add v4.19 kernel patches

This is the remainder of kernel patches for the v4.19
kernel. A whole slew of the previous patch stack is now
upstream, so this mainly contains the stuff that was
added upstream between v4.19 and v5.0-rc1, and then
the USB FOTG201 patches from Hans.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 71 insertions, 0 deletions

diff --git a/target/linux/gemini/patches-4.19/0007-ARM-dts-Fix-up-the-D-Link-DIR-685-MTD-partition-info.patch b/target/linux/gemini/patches-4.19/0007-ARM-dts-Fix-up-the-D-Link-DIR-685-MTD-partition-info.patch
new file mode 100644
index 0000000000..2e4377ec02
--- /dev/null
+++ b/target/linux/gemini/patches-4.19/0007-ARM-dts-Fix-up-the-D-Link-DIR-685-MTD-partition-info.patch
@@ -0,0 +1,71 @@
+From 0f6c4817471faf572b5273cdf90160790b0c3b29 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <linus.walleij@linaro.org>
+Date: Thu, 17 May 2018 17:00:10 +0200
+Subject: [PATCH 07/18] ARM: dts: Fix up the D-Link DIR-685 MTD partition info
+
+The vendor firmware was analyzed to get the right idea about
+this flash layout. /proc/mtd contains:
+
+dev:    size   erasesize  name
+mtd0: 01e7ff40 00020000 "rootfs"
+mtd1: 01f40000 00020000 "upgrade"
+mtd2: 00040000 00020000 "rgdb"
+mtd3: 00020000 00020000 "nvram"
+mtd4: 00040000 00020000 "RedBoot"
+mtd5: 00020000 00020000 "LangPack"
+mtd6: 02000000 00020000 "flash"
+
+Here "flash" is obviously the whole device and we know "rootfs"
+is a bogus hack to point to a squashfs rootfs inside of the main
+"upgrade partition". We know "RedBoot" is the first 0x40000 of
+the flash and the "upgrade" partition follows from 0x40000 to
+0x1f8000. So we have mtd0, 1, 4 and 6 covered.
+
+Remains:
+mtd2: 00040000 00020000 "rgdb"
+mtd3: 00020000 00020000 "nvram"
+mtd5: 00020000 00020000 "LangPack"
+
+Inspecting the flash at 0x1f8000 and 0x1fa000 reveals each of
+these starting with "RGCFG1" so we assume 0x1f8000-1fbfff is
+"rgdb" of 0x40000.
+
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ arch/arm/boot/dts/gemini-dlink-dir-685.dts | 16 ++++++----------
+ 1 file changed, 6 insertions(+), 10 deletions(-)
+
+diff --git a/arch/arm/boot/dts/gemini-dlink-dir-685.dts b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+index 6f258b50eb44..502a361d1fe9 100644
+--- a/arch/arm/boot/dts/gemini-dlink-dir-685.dts
++++ b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+@@ -274,20 +274,16 @@
+ 				read-only;
+ 			};
+ 			/*
+-			 * Between the boot loader and the rootfs is the kernel
+-			 * in a custom Storlink format flashed from the boot
+-			 * menu. The rootfs is in squashfs format.
++			 * This firmware image contains the kernel catenated
++			 * with the squashfs root filesystem. For some reason
++			 * this is called "upgrade" on the vendor system.
+ 			 */
+-			partition@1800c0 {
+-				label = "rootfs";
+-				reg = <0x001800c0 0x01dbff40>;
+-				read-only;
+-			};
+-			partition@1f40000 {
++			partition@40000 {
+ 				label = "upgrade";
+-				reg = <0x01f40000 0x00040000>;
++				reg = <0x00040000 0x01f40000>;
+ 				read-only;
+ 			};
++			/* RGDB, Residental Gateway Database? */
+ 			partition@1f80000 {
+ 				label = "rgdb";
+ 				reg = <0x01f80000 0x00040000>;
+-- 
+2.19.2
+