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davinci: ea20: reorganisation LCD startup 

Signed-off-by: Bastian Ruppert <Bastian.Ruppert@Sewerin.de>
CC: Tom Rini <trini@ti.com>
Acked-by: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Bastian Ruppert 2012-09-13 22:28:59 +00:00 committed by Tom Rini
parent b72db2080b
commit bdb04abe42
1 changed files with 15 additions and 8 deletions
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23
board/davinci/ea20/ea20.c
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@ -176,6 +176,9 @@ int board_early_init_f(void)
if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0) if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
return 1; return 1;
/* Set DISP_ON high to enable LCD output*/
gpio_direction_output(97, 1);
/* Set the RESETOUTn low */ /* Set the RESETOUTn low */
gpio_direction_output(111, 0); 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*/ /* Set LCD_B_PWR low to power down LCD Backlight*/
gpio_direction_output(102, 0); gpio_direction_output(102, 0);
/* Set DISP_ON low to disable LCD output*/
gpio_direction_output(97, 0);
#ifndef CONFIG_USE_IRQ #ifndef CONFIG_USE_IRQ
irq_init(); irq_init();
#endif #endif
@ -250,11 +250,6 @@ int board_early_init_f(void)
writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff, writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff,
&davinci_syscfg_regs->mstpri[2]); &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; return 0;
} }
@ -276,6 +271,9 @@ int board_init(void)
int board_late_init(void) int board_late_init(void)
{ {
unsigned char buf[2];
int ret;
/* PinMux for HALTEN */ /* PinMux for HALTEN */
if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0) if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0)
return 1; return 1;
@ -285,6 +283,15 @@ int board_late_init(void)
setenv("stdout", "serial"); 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; return 0;
} }
#endif /* CONFIG_BOARD_LATE_INIT */ #endif /* CONFIG_BOARD_LATE_INIT */