From f1adefd2393f0322c1c1db8e813e65d95c752cd0 Mon Sep 17 00:00:00 2001
From: Fabio Estevam <fabio.estevam@freescale.com>
Date: Wed, 9 May 2012 06:39:41 +0000
Subject: [PATCH] mx51evk: Add LCD support

Add support for CLAA07LC0ACW LCD that connects to the mx51evk board.

Configure the board to show the Linux logo on the LCD.

Also increase the size of CONFIG_SYS_MALLOC_LEN variable to take into account
the framebuffer usage.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
---
 board/freescale/mx51evk/mx51evk.c | 59 +++++++++++++++++++++++++++++++
 include/configs/mx51evk.h         | 13 ++++++-
 2 files changed, 71 insertions(+), 1 deletion(-)

diff --git a/board/freescale/mx51evk/mx51evk.c b/board/freescale/mx51evk/mx51evk.c
index b505a71054..bc7f05796c 100644
--- a/board/freescale/mx51evk/mx51evk.c
+++ b/board/freescale/mx51evk/mx51evk.c
@@ -36,6 +36,12 @@
 #include <fsl_pmic.h>
 #include <mc13892.h>
 #include <usb/ehci-fsl.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+
+#define MX51EVK_LCD_3V3		(3 * 32 + 9)	/* GPIO4_9 */
+#define MX51EVK_LCD_5V		(3 * 32 + 10)	/* GPIO4_10 */
+#define MX51EVK_LCD_BACKLIGHT	(2 * 32 + 4)	/* GPIO3_4 */
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -453,6 +459,54 @@ int board_mmc_init(bd_t *bis)
 }
 #endif
 
+static struct fb_videomode claa_wvga = {
+	.name		= "CLAA07LC0ACW",
+	.refresh	= 57,
+	.xres		= 800,
+	.yres		= 480,
+	.pixclock	= 37037,
+	.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 lcd_iomux(void)
+{
+	/* DI2_PIN15 */
+	mxc_request_iomux(MX51_PIN_DI_GP4, IOMUX_CONFIG_ALT4);
+
+	/* Pad settings for MX51_PIN_DI2_DISP_CLK */
+	mxc_iomux_set_pad(MX51_PIN_DI2_DISP_CLK, PAD_CTL_HYS_NONE |
+			  PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+			  PAD_CTL_DRV_MAX | PAD_CTL_SRE_SLOW);
+
+	/* Turn on 3.3V voltage for LCD */
+	mxc_request_iomux(MX51_PIN_CSI2_D12, IOMUX_CONFIG_ALT3);
+	gpio_direction_output(MX51EVK_LCD_3V3, 1);
+
+	/* Turn on 5V voltage for LCD */
+	mxc_request_iomux(MX51_PIN_CSI2_D13, IOMUX_CONFIG_ALT3);
+	gpio_direction_output(MX51EVK_LCD_5V, 1);
+
+	/* Turn on GPIO backlight */
+	mxc_request_iomux(MX51_PIN_DI1_D1_CS, IOMUX_CONFIG_ALT4);
+	mxc_iomux_set_input(MX51_GPIO3_IPP_IND_G_IN_4_SELECT_INPUT,
+							INPUT_CTL_PATH1);
+	gpio_direction_output(MX51EVK_LCD_BACKLIGHT, 1);
+}
+
+void lcd_enable(void)
+{
+	int ret = mx51_fb_init(&claa_wvga, 1, IPU_PIX_FMT_RGB565);
+	if (ret)
+		printf("LCD cannot be configured: %d\n", ret);
+}
+
 int board_early_init_f(void)
 {
 	setup_iomux_uart();
@@ -460,6 +514,7 @@ int board_early_init_f(void)
 #ifdef CONFIG_USB_EHCI_MX5
 	setup_usb_h1();
 #endif
+	lcd_iomux();
 
 	return 0;
 }
@@ -469,6 +524,8 @@ int board_init(void)
 	/* address of boot parameters */
 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 
+	lcd_enable();
+
 	return 0;
 }
 
@@ -479,6 +536,8 @@ int board_late_init(void)
 	setup_iomux_spi();
 	power_init();
 #endif
+	setenv("stdout", "serial");
+
 	return 0;
 }
 #endif
diff --git a/include/configs/mx51evk.h b/include/configs/mx51evk.h
index 1477b213bd..58b6f1c10d 100644
--- a/include/configs/mx51evk.h
+++ b/include/configs/mx51evk.h
@@ -51,7 +51,7 @@
 /*
  * Size of malloc() pool
  */
-#define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + 2 * 1024 * 1024)
+#define CONFIG_SYS_MALLOC_LEN		(10 * 1024 * 1024)
 
 #define CONFIG_BOARD_LATE_INIT
 
@@ -123,6 +123,17 @@
 #define CONFIG_MXC_USB_PORTSC	PORT_PTS_ULPI
 #define CONFIG_MXC_USB_FLAGS	MXC_EHCI_POWER_PINS_ENABLED
 
+/* Framebuffer and LCD */
+#define CONFIG_PREBOOT
+#define CONFIG_VIDEO
+#define CONFIG_VIDEO_MX5
+#define CONFIG_CFB_CONSOLE
+#define CONFIG_VGA_AS_SINGLE_DEVICE
+#define CONFIG_VIDEO_BMP_RLE8
+#define CONFIG_SPLASH_SCREEN
+#define CONFIG_BMP_16BPP
+#define CONFIG_VIDEO_LOGO
+
 /* allow to overwrite serial and ethaddr */
 #define CONFIG_ENV_OVERWRITE
 #define CONFIG_CONS_INDEX		1
-- 
2.39.5