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>

1 files changed, 49 insertions, 0 deletions

diff --git a/board/beckhoff/mx53cx9020/mx53cx9020_video.c b/board/beckhoff/mx53cx9020/mx53cx9020_video.c
new file mode 100644
index 0000000000..4da83da1cc
--- /dev/null
+++ b/board/beckhoff/mx53cx9020/mx53cx9020_video.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2015  Beckhoff Automation GmbH & Co. KG
+ * Patrick Bruenn <p.bruenn@beckhoff.com>
+ *
+ * Based on <u-boot>/board/freescale/mx53loco/mx53loco_video.c
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/list.h>
+#include <asm/gpio.h>
+#include <asm/arch/iomux-mx53.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+
+#define CX9020_DVI_PWD	IMX_GPIO_NR(6, 1)
+
+static struct fb_videomode const vga_640x480 = {
+	.name = "VESA_VGA_640x480",
+	.refresh = 60,
+	.xres = 640,
+	.yres = 480,
+	.pixclock = 39721,	/* picosecond (25.175 MHz) */
+	.left_margin = 40,
+	.right_margin = 60,
+	.upper_margin = 10,
+	.lower_margin = 10,
+	.hsync_len = 20,
+	.vsync_len = 10,
+	.sync = 0,
+	.vmode = FB_VMODE_NONINTERLACED
+};
+
+void setup_iomux_lcd(void)
+{
+	/* Turn on DVI_PWD */
+	imx_iomux_v3_setup_pad(MX53_PAD_CSI0_DAT15__GPIO6_1);
+	gpio_direction_output(CX9020_DVI_PWD, 1);
+}
+
+int board_video_skip(void)
+{
+	const int ret = ipuv3_fb_init(&vga_640x480, 0, IPU_PIX_FMT_RGB24);
+	if (ret)
+		printf("VESA VG 640x480 cannot be configured: %d\n", ret);
+	return ret;
+}