[U-Boot] [PATCH V2 08/14] imx: mx6ul_14x14_evk: support lcdif display

Tue Oct 20 15:41:58 CEST 2015

Hi Peng,

On 20/10/2015 13:39, Peng Fan wrote:
> Support lcdif display:
> 1. Add pinmux and pad settings for LCDIF
> 2. Introduce setup_lcd to do the settings for LCDIF
> 3. Enable VIDEO related macros in board header files
> 4. Add a new env videomode which is needed by mxsfb.c. The
>    settings for videomode in this patch is for TFT43AB.
> 5. Tested on mx6ul 14x14/9x9 evk.
> 
> Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
> Cc: Stefano Babic <sbabic at denx.de>
> ---
> 
> V2:
>  Rebased to Latest U-Boot, resolve conflicts.
> 
>  board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c | 63 +++++++++++++++++++++++
>  include/configs/mx6ul_14x14_evk.h                 | 18 +++++++
>  2 files changed, 81 insertions(+)
> 
> diff --git a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
> index 8650f35..287a421 100644
> --- a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
> +++ b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
> @@ -52,6 +52,9 @@ DECLARE_GLOBAL_DATA_PTR;
>  	PAD_CTL_SPEED_HIGH   |                                  \
>  	PAD_CTL_DSE_48ohm   | PAD_CTL_SRE_FAST)
>  
> +#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)
> +
>  #define MDIO_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE |     \
>  	PAD_CTL_DSE_48ohm   | PAD_CTL_SRE_FAST | PAD_CTL_ODE)
>  
> @@ -568,6 +571,62 @@ int board_phy_config(struct phy_device *phydev)
>  }
>  #endif
>  
> +#ifdef CONFIG_VIDEO_MXS
> +static iomux_v3_cfg_t const lcd_pads[] = {
> +	MX6_PAD_LCD_CLK__LCDIF_CLK | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_ENABLE__LCDIF_ENABLE | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_HSYNC__LCDIF_HSYNC | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_VSYNC__LCDIF_VSYNC | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA00__LCDIF_DATA00 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA01__LCDIF_DATA01 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA02__LCDIF_DATA02 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA03__LCDIF_DATA03 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA04__LCDIF_DATA04 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA05__LCDIF_DATA05 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA06__LCDIF_DATA06 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA07__LCDIF_DATA07 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA08__LCDIF_DATA08 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA09__LCDIF_DATA09 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA10__LCDIF_DATA10 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA11__LCDIF_DATA11 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA12__LCDIF_DATA12 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA13__LCDIF_DATA13 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA14__LCDIF_DATA14 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA15__LCDIF_DATA15 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA16__LCDIF_DATA16 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA17__LCDIF_DATA17 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA18__LCDIF_DATA18 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA19__LCDIF_DATA19 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA20__LCDIF_DATA20 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA21__LCDIF_DATA21 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA22__LCDIF_DATA22 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +	MX6_PAD_LCD_DATA23__LCDIF_DATA23 | MUX_PAD_CTRL(LCD_PAD_CTRL),
> +
> +	/* LCD_RST */
> +	MX6_PAD_SNVS_TAMPER9__GPIO5_IO09 | MUX_PAD_CTRL(NO_PAD_CTRL),
> +
> +	/* Use GPIO for Brightness adjustment, duty cycle = period. */
> +	MX6_PAD_GPIO1_IO08__GPIO1_IO08 | MUX_PAD_CTRL(NO_PAD_CTRL),
> +};
> +
> +static int setup_lcd(void)
> +{
> +	enable_lcdif_clock(0);
> +
> +	imx_iomux_v3_setup_multiple_pads(lcd_pads, ARRAY_SIZE(lcd_pads));
> +
> +	/* Reset the LCD */
> +	gpio_direction_output(IMX_GPIO_NR(5, 9) , 0);
> +	udelay(500);
> +	gpio_direction_output(IMX_GPIO_NR(5, 9) , 1);
> +

Just a curiosity: a display reset ? Why is this needed ?

> +	/* Set Brightness to high */
> +	gpio_direction_output(IMX_GPIO_NR(1, 8) , 1);
> +
> +	return 0;
> +}
> +#endif
> +
>  int board_early_init_f(void)
>  {
>  	setup_iomux_uart();
> @@ -600,6 +659,10 @@ int board_init(void)
>  	board_qspi_init();
>  #endif
>  
> +#ifdef CONFIG_VIDEO_MXS
> +	setup_lcd();
> +#endif
> +
>  	return 0;
>  }
>  
> diff --git a/include/configs/mx6ul_14x14_evk.h b/include/configs/mx6ul_14x14_evk.h
> index d5faae6..5779632 100644
> --- a/include/configs/mx6ul_14x14_evk.h
> +++ b/include/configs/mx6ul_14x14_evk.h
> @@ -77,6 +77,7 @@
>  	"fdt_addr=0x83000000\0" \
>  	"boot_fdt=try\0" \
>  	"ip_dyn=yes\0" \
> +	"videomode=video=ctfb:x:480,y:272,depth:24,pclk:108695,le:8,ri:4,up:2,lo:4,hs:41,vs:10,sync:0,vmode:0\0" \

Why this ? Setup is in device tree, we should not need it, do we ?

>  	"mmcdev="__stringify(CONFIG_SYS_MMC_ENV_DEV)"\0" \
>  	"mmcpart=" __stringify(CONFIG_SYS_MMC_IMG_LOAD_PART) "\0" \
>  	"mmcroot=" CONFIG_MMCROOT " rootwait rw\0" \
> @@ -242,4 +243,21 @@
>  
>  #define CONFIG_IMX_THERMAL
>  
> +#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 MX6UL_LCDIF1_BASE_ADDR
> +#endif
> +
>  #endif
> 

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================