[U-Boot] [PATCH 1/6] davinci: ea20: reorganisation LCD startup

[Stefano Babic]

On 10/08/2012 09:26, Bastian Ruppert wrote:
> Signed-off-by: Bastian Ruppert <Bastian.Ruppert at Sewerin.de>
> CC: Tom Rini <trini at ti.com>
> CC: Stefano Babic <sbabic at denx.de>
> ---
>  board/davinci/ea20/ea20.c |   23 +++++++++++++++--------
>  1 files changed, 15 insertions(+), 8 deletions(-)
> 
> diff --git a/board/davinci/ea20/ea20.c b/board/davinci/ea20/ea20.c
> index 7e00040..69307e4 100644
> --- a/board/davinci/ea20/ea20.c
> +++ b/board/davinci/ea20/ea20.c
> @@ -176,6 +176,9 @@ int board_early_init_f(void)
>  	if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
>  		return 1;
>  
> +	/* Set DISP_ON high to enable LCD output*/
> +	gpio_direction_output(97, 1);
> +
>  	/* Set the RESETOUTn low */
>  	gpio_direction_output(111, 0);
>  
> @@ -188,9 +191,6 @@ int board_early_init_f(void)
>  	/* Set LCD_B_PWR low to power down LCD Backlight*/
>  	gpio_direction_output(102, 0);
>  
> -	/* Set DISP_ON low to disable LCD output*/
> -	gpio_direction_output(97, 0);
> -
>  #ifndef CONFIG_USE_IRQ
>  	irq_init();
>  #endif
> @@ -250,11 +250,6 @@ int board_early_init_f(void)
>  	writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff,
>  	       &davinci_syscfg_regs->mstpri[2]);
>  
> -	/* Set LCD_B_PWR low to power up LCD Backlight*/
> -	gpio_set_value(102, 1);
> -
> -	/* Set DISP_ON low to disable LCD output*/
> -	gpio_set_value(97, 1);
>  
>  	return 0;
>  }
> @@ -276,6 +271,9 @@ int board_init(void)
>  
>  int board_late_init(void)
>  {
> +	unsigned char buf[2];
> +	int ret;
> +
>  	/* PinMux for HALTEN */
>  	if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0)
>  		return 1;
> @@ -285,6 +283,15 @@ int board_late_init(void)
>  
>  	setenv("stdout", "serial");
>  
> +	/* Set fixed contrast settings for LCD via I2C potentiometer */
> +	buf[0] = 0x00;
> +	buf[1] = 0xd7;
> +	ret = i2c_write(0x2e, 6, 1, buf, 2);
> +	if (ret)
> +		puts("\nContrast Settings FAILED\n");
> +
> +	/* Set LCD_B_PWR high to power up LCD Backlight*/
> +	gpio_set_value(102, 1);
>  	return 0;
>  }
>  #endif /* CONFIG_BOARD_LATE_INIT */
> 

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

Best regards,
Stefano Babic


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