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, 73 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0278-Prevent-voltage-low-warnings-from-filling-log.patch b/target/linux/brcm2708/patches-4.14/950-0278-Prevent-voltage-low-warnings-from-filling-log.patch
new file mode 100644
index 0000000000..f83d6704d1
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0278-Prevent-voltage-low-warnings-from-filling-log.patch
@@ -0,0 +1,73 @@
+From cecce8a9e798fbe8571381b6f9f69fd7a0defa37 Mon Sep 17 00:00:00 2001
+From: James Hughes <james.hughes@raspberrypi.org>
+Date: Wed, 18 Apr 2018 13:02:57 +0100
+Subject: [PATCH 278/454] Prevent voltage low warnings from filling log
+
+Although the correct fix for low voltage warnings is to
+improve the power supply, the current implementation
+of the detection can fill the log if the warning
+happens freqently. This replaces the logging with
+slightly custom ratelimited logging.
+
+Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
+---
+ drivers/firmware/raspberrypi.c | 40 ++++++++++++++++++++++++++++++++--
+ 1 file changed, 38 insertions(+), 2 deletions(-)
+
+--- a/drivers/firmware/raspberrypi.c
++++ b/drivers/firmware/raspberrypi.c
+@@ -24,6 +24,38 @@
+ 
+ #define UNDERVOLTAGE_BIT		BIT(0)
+ 
++
++/*
++ * This section defines some rate limited logging that prevent
++ * repeated messages at much lower Hz than the default kernel settings.
++ * It's usually 5s, this is 5 minutes.
++ * Burst 3 means you may get three messages 'quickly', before
++ * the ratelimiting kicks in.
++ */
++#define LOCAL_RATELIMIT_INTERVAL (5 * 60 * HZ)
++#define LOCAL_RATELIMIT_BURST 3
++
++#ifdef CONFIG_PRINTK
++#define printk_ratelimited_local(fmt, ...)	\
++({						\
++	static DEFINE_RATELIMIT_STATE(_rs,	\
++		LOCAL_RATELIMIT_INTERVAL,	\
++		LOCAL_RATELIMIT_BURST);		\
++						\
++	if (__ratelimit(&_rs))			\
++		printk(fmt, ##__VA_ARGS__);	\
++})
++#else
++#define printk_ratelimited_local(fmt, ...)	\
++	no_printk(fmt, ##__VA_ARGS__)
++#endif
++
++#define pr_crit_ratelimited_local(fmt, ...)              \
++	printk_ratelimited_local(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
++#define pr_info_ratelimited_local(fmt, ...)              \
++	printk_ratelimited_local(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
++
++
+ struct rpi_firmware {
+ 	struct mbox_client cl;
+ 	struct mbox_chan *chan; /* The property channel. */
+@@ -216,9 +248,13 @@ static int rpi_firmware_get_throttled(st
+ 
+ 	if (new_uv != old_uv) {
+ 		if (new_uv)
+-			pr_crit("Under-voltage detected! (0x%08x)\n", *value);
++			pr_crit_ratelimited_local(
++				"Under-voltage detected! (0x%08x)\n",
++				 *value);
+ 		else
+-			pr_info("Voltage normalised (0x%08x)\n", *value);
++			pr_info_ratelimited_local(
++				"Voltage normalised (0x%08x)\n",
++				 *value);
+ 	}
+ 
+ 	sysfs_notify(&fw->cl.dev->kobj, NULL, "get_throttled");