arm: imx: add i.MX53 Beckhoff CX9020 Embedded PC

Add CX9020 board based on mx53loco.
Add simplified imx53 base device tree from kernel v4.8-rc8, to reuse
serial_mxc with DTE and prepare for device tree migration of other
functions and imx53 devices.

The CX9020 differs from i.MX53 Quick Start Board by:
- use uart2 instead of uart1
- DVI-D connector instead of VGA
- no audio
- CCAT FPGA connected to emi
- enable rtc

Signed-off-by: Patrick Bruenn <p.bruenn@beckhoff.com>

drivers/fpga/Kconfig

@@ -3,6 +3,26 @@ menu "FPGA support"
 config FPGA
 	bool
 
+config FPGA_ALTERA
+	bool "Enable Altera FPGA drivers"
+	select FPGA
+	help
+	  Say Y here to enable the Altera FPGA driver
+
+	  This provides basic infrastructure to support Altera FPGA devices.
+	  Enable Altera FPGA specific functions which includes bitstream
+	  (in BIT format), fpga and device validation.
+
+config FPGA_CYCLON2
+	bool "Enable Altera FPGA driver for Cyclone II"
+	depends on FPGA_ALTERA
+	help
+	  Say Y here to enable the Altera Cyclone II FPGA specific driver
+
+	  This provides common functionality for Altera Cyclone II devices.
+	  Enable FPGA driver for loading bitstream in BIT and BIN format
+	  on Altera Cyclone II device.
+
 config FPGA_XILINX
 	bool "Enable Xilinx FPGA drivers"
 	select FPGA

drivers/net/Kconfig

@@ -142,7 +142,7 @@ config ETHOC
 
 config FEC_MXC
 	bool "FEC Ethernet controller"
-	depends on MX6
+	depends on MX5 || MX6
 	help
 	  This driver supports the 10/100 Fast Ethernet controller for
 	  NXP i.MX processors.

drivers/pinctrl/nxp/Kconfig

@@ -1,6 +1,20 @@
 config PINCTRL_IMX
 	bool
 
+config PINCTRL_IMX5
+	bool "IMX5 pinctrl driver"
+	depends on ARCH_MX5 && PINCTRL_FULL
+	select DEVRES
+	select PINCTRL_IMX
+	help
+	  Say Y here to enable the imx5 pinctrl driver
+
+	  This provides a simple pinctrl driver for i.MX 53SoC familiy,
+	  i.MX53. This feature depends on device tree
+	  configuration. This driver is different from the linux one,
+	  this is a simple implementation, only parses the 'fsl,pins'
+	  property and configure related registers.
+
 config PINCTRL_IMX6
 	bool "IMX6 pinctrl driver"
 	depends on ARCH_MX6 && PINCTRL_FULL

drivers/pinctrl/nxp/Makefile

@@ -1,3 +1,4 @@
 obj-$(CONFIG_PINCTRL_IMX)		+= pinctrl-imx.o
+obj-$(CONFIG_PINCTRL_IMX5)		+= pinctrl-imx5.o
 obj-$(CONFIG_PINCTRL_IMX6)		+= pinctrl-imx6.o
 obj-$(CONFIG_PINCTRL_IMX7)		+= pinctrl-imx7.o

drivers/pinctrl/nxp/pinctrl-imx5.c

@@ -0,0 +1,44 @@
+
+/*
+ * Copyright (C) 2016 Peng Fan <van.freenix@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <dm/device.h>
+#include <dm/pinctrl.h>
+
+#include "pinctrl-imx.h"
+
+static struct imx_pinctrl_soc_info imx5_pinctrl_soc_info;
+
+static int imx5_pinctrl_probe(struct udevice *dev)
+{
+	struct imx_pinctrl_soc_info *info =
+		(struct imx_pinctrl_soc_info *)dev_get_driver_data(dev);
+
+	return imx_pinctrl_probe(dev, info);
+}
+
+static const struct udevice_id imx5_pinctrl_match[] = {
+	{
+		.compatible = "fsl,imx53-iomuxc",
+		.data = (ulong)&imx5_pinctrl_soc_info
+	},
+	{
+		.compatible = "fsl,imx53-iomuxc-gpr",
+		.data = (ulong)&imx5_pinctrl_soc_info
+	},
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(imx5_pinctrl) = {
+	.name = "imx5-pinctrl",
+	.id = UCLASS_PINCTRL,
+	.of_match = of_match_ptr(imx5_pinctrl_match),
+	.probe = imx5_pinctrl_probe,
+	.remove = imx_pinctrl_remove,
+	.priv_auto_alloc_size = sizeof(struct imx_pinctrl_priv),
+	.ops = &imx_pinctrl_ops,
+	.flags = DM_FLAG_PRE_RELOC,
+};

drivers/serial/Kconfig

@@ -325,7 +325,7 @@ config MVEBU_A3700_UART
 
 config MXC_UART
 	bool "IMX serial port support"
-	depends on MX6
+	depends on MX5 || MX6
 	help
 	  If you have a machine based on a Motorola IMX CPU you
 	  can enable its onboard serial port by enabling this option.