[U-Boot] [PATCH] imx: mx6sxsabresd: Add MCIMX28LCD display support

[Ye Li]

The i.MX6SX SABRESD board supports MCIMX28LCD (800x480x24) at LCDIF1
port, enable this display feature by adding relevant BSP codes
and configurations.

Signed-off-by: Ye Li <ye.li at nxp.com>
---
 board/freescale/mx6sxsabresd/mx6sxsabresd.c |   61 +++++++++++++++++++++++++++
 include/configs/mx6sxsabresd.h              |   20 +++++++++
 2 files changed, 81 insertions(+), 0 deletions(-)

diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
index 56dc020..886c883 100644
--- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
+++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
@@ -59,6 +59,9 @@ DECLARE_GLOBAL_DATA_PTR;
 	PAD_CTL_DSE_40ohm | PAD_CTL_HYS |			\
 	PAD_CTL_ODE)
 
+#define LCD_PAD_CTRL    (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | PAD_CTL_PUE | \
+	PAD_CTL_PKE | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm)
+
 int dram_init(void)
 {
 	gd->ram_size = PHYS_SDRAM_SIZE;
@@ -458,6 +461,60 @@ int board_qspi_init(void)
 }
 #endif
 
+#ifdef CONFIG_VIDEO_MXS
+static iomux_v3_cfg_t const lcd_pads[] = {
+	MX6_PAD_LCD1_CLK__LCDIF1_CLK | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_ENABLE__LCDIF1_ENABLE | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_HSYNC__LCDIF1_HSYNC | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_VSYNC__LCDIF1_VSYNC | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA00__LCDIF1_DATA_0 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA01__LCDIF1_DATA_1 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA02__LCDIF1_DATA_2 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA03__LCDIF1_DATA_3 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA04__LCDIF1_DATA_4 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA05__LCDIF1_DATA_5 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA06__LCDIF1_DATA_6 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA07__LCDIF1_DATA_7 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA08__LCDIF1_DATA_8 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA09__LCDIF1_DATA_9 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA10__LCDIF1_DATA_10 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA11__LCDIF1_DATA_11 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA12__LCDIF1_DATA_12 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA13__LCDIF1_DATA_13 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA14__LCDIF1_DATA_14 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA15__LCDIF1_DATA_15 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA16__LCDIF1_DATA_16 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA17__LCDIF1_DATA_17 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA18__LCDIF1_DATA_18 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA19__LCDIF1_DATA_19 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA20__LCDIF1_DATA_20 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA21__LCDIF1_DATA_21 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA22__LCDIF1_DATA_22 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_DATA23__LCDIF1_DATA_23 | MUX_PAD_CTRL(LCD_PAD_CTRL),
+	MX6_PAD_LCD1_RESET__GPIO3_IO_27 | MUX_PAD_CTRL(NO_PAD_CTRL),
+
+	/* Use GPIO for Brightness adjustment, duty cycle = period */
+	MX6_PAD_SD1_DATA2__GPIO6_IO_4 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+static int setup_lcd(void)
+{
+	enable_lcdif_clock(LCDIF1_BASE_ADDR);
+
+	imx_iomux_v3_setup_multiple_pads(lcd_pads, ARRAY_SIZE(lcd_pads));
+
+	/* Reset the LCD */
+	gpio_direction_output(IMX_GPIO_NR(3, 27) , 0);
+	udelay(500);
+	gpio_direction_output(IMX_GPIO_NR(3, 27) , 1);
+
+	/* Set Brightness to high */
+	gpio_direction_output(IMX_GPIO_NR(6, 4) , 1);
+
+	return 0;
+}
+#endif
+
 int board_init(void)
 {
 	/* Address of boot parameters */
@@ -471,6 +528,10 @@ int board_init(void)
 	board_qspi_init();
 #endif
 
+#ifdef CONFIG_VIDEO_MXS
+	setup_lcd();
+#endif
+
 	return 0;
 }
 
diff --git a/include/configs/mx6sxsabresd.h b/include/configs/mx6sxsabresd.h
index 0aec296..29e9c08 100644
--- a/include/configs/mx6sxsabresd.h
+++ b/include/configs/mx6sxsabresd.h
@@ -36,6 +36,7 @@
 	"fdt_addr=0x88000000\0" \
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
+	"videomode=video=ctfb:x:800,y:480,depth:24,pclk:29850,le:89,ri:164,up:23,lo:10,hs:10,vs:10,sync:0,vmode:0\0" \
 	"mmcdev=2\0" \
 	"mmcpart=1\0" \
 	"mmcroot=/dev/mmcblk0p2 rootwait rw\0" \
@@ -195,6 +196,25 @@
 #define FSL_QSPI_FLASH_NUM		2
 #endif
 
+#ifndef CONFIG_SPL_BUILD
+#define CONFIG_VIDEO
+#ifdef CONFIG_VIDEO
+#define CONFIG_CFB_CONSOLE
+#define CONFIG_VIDEO_MXS
+#define CONFIG_VIDEO_LOGO
+#define CONFIG_VIDEO_SW_CURSOR
+#define CONFIG_VGA_AS_SINGLE_DEVICE
+#define CONFIG_SYS_CONSOLE_IS_IN_ENV
+#define CONFIG_SPLASH_SCREEN
+#define CONFIG_SPLASH_SCREEN_ALIGN
+#define CONFIG_CMD_BMP
+#define CONFIG_BMP_16BPP
+#define CONFIG_VIDEO_BMP_RLE8
+#define CONFIG_VIDEO_BMP_LOGO
+#define MXS_LCDIF_BASE MX6SX_LCDIF1_BASE_ADDR
+#endif
+#endif
+
 #define CONFIG_ENV_OFFSET		(8 * SZ_64K)
 #define CONFIG_ENV_SIZE			SZ_8K
 #define CONFIG_ENV_IS_IN_MMC
-- 
1.7.4.1