[U-Boot] [PATCH] mx51evk: Add LCD support

[Stefano Babic]

On 09/05/2012 18:39, Fabio Estevam wrote:
> 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 at freescale.com>
> ---
>  board/freescale/mx51evk/mx51evk.c |   59 +++++++++++++++++++++++++++++++++++++
>  include/configs/mx51evk.h         |   13 +++++++-
>  2 files changed, 71 insertions(+), 1 deletions(-)
> 
> diff --git a/board/freescale/mx51evk/mx51evk.c b/board/freescale/mx51evk/mx51evk.c
> index b505a71..90dbabb 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 1477b21..58b6f1c 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

No issue on my side, here my:

Acked-by: Stefano Babic <sbabic at denx.de>

Best regards,
Stefano Babic

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