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-rw-r--r--target/linux/brcm2708/patches-4.4/0471-net-ethernet-enc28j60-add-device-tree-support.patch143
1 files changed, 143 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0471-net-ethernet-enc28j60-add-device-tree-support.patch b/target/linux/brcm2708/patches-4.4/0471-net-ethernet-enc28j60-add-device-tree-support.patch
new file mode 100644
index 0000000000..eab1286fc0
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0471-net-ethernet-enc28j60-add-device-tree-support.patch
@@ -0,0 +1,143 @@
+From 55d0ce46f962a768dd358ca26158c8c195988645 Mon Sep 17 00:00:00 2001
+From: Michael Heimpold <mhei@heimpold.de>
+Date: Thu, 28 Apr 2016 22:06:15 +0200
+Subject: [PATCH] net: ethernet: enc28j60: add device tree support
+
+(Upstream commit 2dd355a007e44960ec049c75920ddb6778fec9ee)
+
+The following patch adds the required match table for device tree support
+(and while at, fix the indent). It's also possible to specify the
+MAC address in the DT blob.
+
+Also add the corresponding binding documentation file.
+
+Signed-off-by: Michael Heimpold <mhei@heimpold.de>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ .../devicetree/bindings/net/microchip,enc28j60.txt | 59 ++++++++++++++++++++++
+ drivers/net/ethernet/microchip/enc28j60.c | 21 +++++---
+ 2 files changed, 73 insertions(+), 7 deletions(-)
+ create mode 100644 Documentation/devicetree/bindings/net/microchip,enc28j60.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/net/microchip,enc28j60.txt
+@@ -0,0 +1,59 @@
++* Microchip ENC28J60
++
++This is a standalone 10 MBit ethernet controller with SPI interface.
++
++For each device connected to a SPI bus, define a child node within
++the SPI master node.
++
++Required properties:
++- compatible: Should be "microchip,enc28j60"
++- reg: Specify the SPI chip select the ENC28J60 is wired to
++- interrupt-parent: Specify the phandle of the source interrupt, see interrupt
++ binding documentation for details. Usually this is the GPIO bank
++ the interrupt line is wired to.
++- interrupts: Specify the interrupt index within the interrupt controller (referred
++ to above in interrupt-parent) and interrupt type. The ENC28J60 natively
++ generates falling edge interrupts, however, additional board logic
++ might invert the signal.
++- pinctrl-names: List of assigned state names, see pinctrl binding documentation.
++- pinctrl-0: List of phandles to configure the GPIO pin used as interrupt line,
++ see also generic and your platform specific pinctrl binding
++ documentation.
++
++Optional properties:
++- spi-max-frequency: Maximum frequency of the SPI bus when accessing the ENC28J60.
++ According to the ENC28J80 datasheet, the chip allows a maximum of 20 MHz, however,
++ board designs may need to limit this value.
++- local-mac-address: See ethernet.txt in the same directory.
++
++
++Example (for NXP i.MX28 with pin control stuff for GPIO irq):
++
++ ssp2: ssp@80014000 {
++ compatible = "fsl,imx28-spi";
++ pinctrl-names = "default";
++ pinctrl-0 = <&spi2_pins_b &spi2_sck_cfg>;
++ status = "okay";
++
++ enc28j60: ethernet@0 {
++ compatible = "microchip,enc28j60";
++ pinctrl-names = "default";
++ pinctrl-0 = <&enc28j60_pins>;
++ reg = <0>;
++ interrupt-parent = <&gpio3>;
++ interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
++ spi-max-frequency = <12000000>;
++ };
++ };
++
++ pinctrl@80018000 {
++ enc28j60_pins: enc28j60_pins@0 {
++ reg = <0>;
++ fsl,pinmux-ids = <
++ MX28_PAD_AUART0_RTS__GPIO_3_3 /* Interrupt */
++ >;
++ fsl,drive-strength = <MXS_DRIVE_4mA>;
++ fsl,voltage = <MXS_VOLTAGE_HIGH>;
++ fsl,pull-up = <MXS_PULL_DISABLE>;
++ };
++ };
+--- a/drivers/net/ethernet/microchip/enc28j60.c
++++ b/drivers/net/ethernet/microchip/enc28j60.c
+@@ -28,11 +28,12 @@
+ #include <linux/skbuff.h>
+ #include <linux/delay.h>
+ #include <linux/spi/spi.h>
++#include <linux/of_net.h>
+
+ #include "enc28j60_hw.h"
+
+ #define DRV_NAME "enc28j60"
+-#define DRV_VERSION "1.01"
++#define DRV_VERSION "1.02"
+
+ #define SPI_OPLEN 1
+
+@@ -1544,6 +1545,7 @@ static int enc28j60_probe(struct spi_dev
+ {
+ struct net_device *dev;
+ struct enc28j60_net *priv;
++ const void *macaddr;
+ int ret = 0;
+
+ if (netif_msg_drv(&debug))
+@@ -1575,7 +1577,12 @@ static int enc28j60_probe(struct spi_dev
+ ret = -EIO;
+ goto error_irq;
+ }
+- eth_hw_addr_random(dev);
++
++ macaddr = of_get_mac_address(spi->dev.of_node);
++ if (macaddr)
++ ether_addr_copy(dev->dev_addr, macaddr);
++ else
++ eth_hw_addr_random(dev);
+ enc28j60_set_hw_macaddr(dev);
+
+ /* Board setup must set the relevant edge trigger type;
+@@ -1630,16 +1637,16 @@ static int enc28j60_remove(struct spi_de
+ return 0;
+ }
+
+-static const struct of_device_id enc28j60_of_match[] = {
+- { .compatible = "microchip,enc28j60", },
++static const struct of_device_id enc28j60_dt_ids[] = {
++ { .compatible = "microchip,enc28j60" },
+ { /* sentinel */ }
+ };
+-MODULE_DEVICE_TABLE(of, enc28j60_of_match);
++MODULE_DEVICE_TABLE(of, enc28j60_dt_ids);
+
+ static struct spi_driver enc28j60_driver = {
+ .driver = {
+- .name = DRV_NAME,
+- .of_match_table = enc28j60_of_match,
++ .name = DRV_NAME,
++ .of_match_table = enc28j60_dt_ids,
+ },
+ .probe = enc28j60_probe,
+ .remove = enc28j60_remove,