brcm2708: add kernel 4.14 support

Patch generation process:
- rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable
- git format-patch v4.14.89

Patches skipped during rebase:
- lan78xx: Read MAC address from DT if present
- lan78xx: Enable LEDs and auto-negotiation
- Revert "softirq: Let ksoftirqd do its job"
- sc16is7xx: Fix for multi-channel stall
- lan78xx: Ignore DT MAC address if already valid
- lan78xx: Simple patch to prevent some crashes
- tcp_write_queue_purge clears all the SKBs in the write queue
- Revert "lan78xx: Simple patch to prevent some crashes"
- lan78xx: Connect phy early
- Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro
- Revert "Revert "softirq: Let ksoftirqd do its job""
- ASoC: cs4265: SOC_SINGLE register value error fix
- Revert "ASoC: cs4265: SOC_SINGLE register value error fix"
- Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"
- Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends""

Patches dropped after rebase:
- net: Add non-mainline source for rtl8192cu wlan
- net: Fix rtl8192cu build errors on other platforms
- brcm: adds support for BCM43341 wifi
- brcmfmac: Mute expected startup 'errors'
- ARM64: Fix build break for RTL8187/RTL8192CU wifi
- ARM64: Enable RTL8187/RTL8192CU wifi in build config
- This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator
- brcmfmac: add CLM download support
- brcmfmac: request_firmware_direct is quieter
- Sets the BCDC priority to constant 0
- brcmfmac: Disable ARP offloading when promiscuous
- brcmfmac: Avoid possible out-of-bounds read
- brcmfmac: Delete redundant length check
- net: rtl8192cu: Normalize indentation
- net: rtl8192cu: Fix implicit fallthrough warnings
- Revert "Sets the BCDC priority to constant 0"
- media: cxd2880: Bump to match 4.18.y version
- media: cxd2880-spi: Bump to match 4.18.y version
- Revert "mm: alloc_contig: re-allow CMA to compact FS pages"
- Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages""
- cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with
  MEDIA_SUBDRV_AUTOSELECT
- 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch
- 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch

Make I2C built-in instead of modular as in upstream defconfig; also the
easiest way to get MFD_ARIZONA enabled, which is required by
kmod-sound-soc-rpi-cirrus.
Add missing compatible strings from
4.9/960-add-rasbperrypi-compatible.patch, using upstream names for
compute modules.
Add extra patch to enable the LEDs on lan78xx.

Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y)
Runtime-tested: bcm2708, bcm2710

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

1 files changed, 114 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0417-BCM270X_DT-Add-gpio-fan-overlay.patch b/target/linux/brcm2708/patches-4.14/950-0417-BCM270X_DT-Add-gpio-fan-overlay.patch
new file mode 100644
index 0000000000..4e7f3641be
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0417-BCM270X_DT-Add-gpio-fan-overlay.patch
@@ -0,0 +1,114 @@
+From 498dfe7d12a047e4a3b466683b0b8138ea74ed9b Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 18 Sep 2018 11:08:07 +0100
+Subject: [PATCH 417/454] BCM270X_DT: Add gpio-fan overlay
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             |  8 +++
+ .../boot/dts/overlays/gpio-fan-overlay.dts    | 71 +++++++++++++++++++
+ 3 files changed, 80 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/gpio-fan-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -35,6 +35,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	fe-pi-audio.dtbo \
+ 	goodix.dtbo \
+ 	googlevoicehat-soundcard.dtbo \
++	gpio-fan.dtbo \
+ 	gpio-ir.dtbo \
+ 	gpio-ir-tx.dtbo \
+ 	gpio-key.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -563,6 +563,14 @@ Load:   dtoverlay=googlevoicehat-soundca
+ Params: <None>
+ 
+ 
++Name:   gpio-fan
++Info:   Configure a GPIO pin to control a cooling fan.
++Load:   dtoverlay=gpio-fan,<param>=<val>
++Params: gpiopin                 GPIO used to control the fan (default 12)
++        temp                    Temperature at which the fan switches on, in
++                                millicelcius (default 55000)
++
++
+ Name:   gpio-ir
+ Info:   Use GPIO pin as rc-core style infrared receiver input. The rc-core-
+         based gpio_ir_recv driver maps received keys directly to a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/gpio-fan-overlay.dts
+@@ -0,0 +1,71 @@
++/*
++ * Overlay for the Raspberry Pi GPIO Fan @ BCM GPIO12.
++ * Optional parameters:
++ *	- "gpiopin"	- default GPIO12
++ * 	- "temp"	- default 55000
++ * Requires:
++ *	- kernel configurations: CONFIG_SENSORS_GPIO_FAN=m and CONFIG_SENSORS_PWM_FAN=m;
++ *	- kernel rebuid;
++ *	- DC Fan connected to GPIO via a N-MOSFET (2N7002)
++ *
++ *                   ┌─────────────────────┐
++ *                   │Fan negative terminal│
++ *                   └┬────────────────────┘
++ *                    │
++ *                 │──┘
++ * [GPIO12]──────┤ │<─┐  2N7002
++ *                 │──┤
++ *                    │
++ *                   ─┴─
++ *                   GND
++ *
++ * sudo dtc -W no-unit_address_vs_reg -@ -I dts -O dtb -o /boot/overlays/gpio-fan.dtbo gpio-fan.dts
++ * sudo nano /boot/config.txt add "dtoverlay=gpio-fan" or "dtoverlay=gpio-fan,gpiopin=12,temp=45000"
++ * or
++ * sudo sh -c "echo '\n# Enable PI GPIO-Fan\ndtoverlay=gpio-fan\n' >> /boot/config.txt"
++ * sudo sh -c "echo '\n# Enable PI GPIO-Fan\ndtoverlay=gpio-fan,gpiopin=12\n' >> /boot/config.txt"
++ *
++ */
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2708";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			fan0: gpio-fan@0 {
++				compatible = "gpio-fan";
++				gpios = <&gpio 12 1>;
++				gpio-fan,speed-map = <0    0>,
++									 <5000 1>;
++				#cooling-cells = <2>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&cpu_thermal>;
++		polling-delay = <2000>;	/* milliseconds */
++		__overlay__ {
++			trips {
++				cpu_hot: trip-point@0 {
++					temperature = <55000>;	/* (millicelsius) Fan started at 55°C */
++					hysteresis = <5000>;	/* (millicelsius) Fan stopped at 50°C */
++					type = "active";
++				};
++			};
++			cooling-maps {
++				map0 {
++					trip = <&cpu_hot>;
++					cooling-device = <&fan0 1 1>;
++				};
++			};
++		};
++	};
++	__overrides__ {
++		gpiopin = <&fan0>,"gpios:4", <&fan0>,"brcm,pins:0";
++		temp = <&cpu_hot>,"temperature:0";
++	};
++};