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, 126 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0443-net-lan78xx-Support-auto-downshift-to-100Mb-s.patch b/target/linux/brcm2708/patches-4.14/950-0443-net-lan78xx-Support-auto-downshift-to-100Mb-s.patch
new file mode 100644
index 0000000000..4bdbd6eea9
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0443-net-lan78xx-Support-auto-downshift-to-100Mb-s.patch
@@ -0,0 +1,126 @@
+From 68502f802a66b68a6b5fefb52e709807a702a94b Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 26 Nov 2018 19:46:58 +0000
+Subject: [PATCH 443/454] net: lan78xx: Support auto-downshift to 100Mb/s
+
+Ethernet cables with faulty or missing pairs (specifically pairs C and
+D) allow auto-negotiation to 1000Mbs, but do not support the successful
+establishment of a link. Add a DT property, "microchip,downshift-after",
+to configure the number of auto-negotiation failures after which it
+falls back to 100Mbs. Valid values are 2, 3, 4, 5 and 0, where 0 means
+never downshift.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/net/phy/microchip.c  | 33 +++++++++++++++++++++++++++++++++
+ drivers/net/usb/lan78xx.c    |  8 ++++++--
+ include/linux/microchipphy.h | 11 +++++++++++
+ 3 files changed, 50 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/phy/microchip.c
++++ b/drivers/net/phy/microchip.c
+@@ -21,6 +21,7 @@
+ #include <linux/phy.h>
+ #include <linux/microchipphy.h>
+ #include <linux/delay.h>
++#include <linux/of.h>
+ 
+ #define DRIVER_AUTHOR	"WOOJUNG HUH <woojung.huh@microchip.com>"
+ #define DRIVER_DESC	"Microchip LAN88XX PHY driver"
+@@ -225,6 +226,7 @@ static int lan88xx_probe(struct phy_devi
+ {
+ 	struct device *dev = &phydev->mdio.dev;
+ 	struct lan88xx_priv *priv;
++	u32 downshift_after = 0;
+ 
+ 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ 	if (!priv)
+@@ -232,6 +234,37 @@ static int lan88xx_probe(struct phy_devi
+ 
+ 	priv->wolopts = 0;
+ 
++	if (!of_property_read_u32(dev->of_node,
++				  "microchip,downshift-after",
++				  &downshift_after)) {
++		u32 mask = LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_MASK;
++		u32 val = LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT;
++
++		switch (downshift_after) {
++		case 2:
++			val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_2;
++			break;
++		case 3:
++			val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_3;
++			break;
++		case 4:
++			val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_4;
++			break;
++		case 5:
++			val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_5;
++			break;
++		case 0:
++			/* Disable completely */
++			mask = LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT;
++			val = 0;
++			break;
++		default:
++			return -EINVAL;
++		}
++		(void)phy_modify_paged(phydev, 1, LAN78XX_PHY_CTRL3,
++				       mask, val);
++	}
++
+ 	/* these values can be used to identify internal PHY */
+ 	priv->chip_id = phy_read_mmd(phydev, 3, LAN88XX_MMD3_CHIP_ID);
+ 	priv->chip_rev = phy_read_mmd(phydev, 3, LAN88XX_MMD3_CHIP_REV);
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -36,7 +36,8 @@
+ #include <linux/irq.h>
+ #include <linux/irqchip/chained_irq.h>
+ #include <linux/microchipphy.h>
+-#include <linux/phy.h>
++#include <linux/phy_fixed.h>
++#include <linux/of_mdio.h>
+ #include <linux/of_net.h>
+ #include "lan78xx.h"
+ 
+@@ -1763,6 +1764,7 @@ done:
+ 
+ static int lan78xx_mdio_init(struct lan78xx_net *dev)
+ {
++	struct device_node *node;
+ 	int ret;
+ 
+ 	dev->mdiobus = mdiobus_alloc();
+@@ -1791,7 +1793,9 @@ static int lan78xx_mdio_init(struct lan7
+ 		break;
+ 	}
+ 
+-	ret = mdiobus_register(dev->mdiobus);
++	node = of_get_child_by_name(dev->udev->dev.of_node, "mdio");
++	ret = of_mdiobus_register(dev->mdiobus, node);
++	of_node_put(node);
+ 	if (ret) {
+ 		netdev_err(dev->net, "can't register MDIO bus\n");
+ 		goto exit1;
+--- a/include/linux/microchipphy.h
++++ b/include/linux/microchipphy.h
+@@ -70,6 +70,17 @@
+ #define	LAN88XX_MMD3_CHIP_ID			(32877)
+ #define	LAN88XX_MMD3_CHIP_REV			(32878)
+ 
++/* Registers specific to the LAN7800/LAN7850 embedded phy */
++#define LAN78XX_PHY_LED_MODE_SELECT		(0x1D)
++
++#define LAN78XX_PHY_CTRL3			(0x14)
++#define LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT	(0x0010)
++#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_MASK	(0x000c)
++#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_2	(0x0000)
++#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_3	(0x0004)
++#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_4	(0x0008)
++#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_5	(0x000c)
++
+ /* DSP registers */
+ #define PHY_ARDENNES_MMD_DEV_3_PHY_CFG		(0x806A)
+ #define PHY_ARDENNES_MMD_DEV_3_PHY_CFG_ZD_DLY_EN_	(0x2000)