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authorBastian Ruppert <Bastian.Ruppert@Sewerin.de>2012-09-13 22:28:59 +0000
committerTom Rini <trini@ti.com>2012-10-01 10:02:12 -0700
commitbdb04abe42d808223bec5c9e589109b5d3953a97 (patch)
tree3a86ac9c9061ee2ebb80b53fdf7ef663932cb875
parentb72db2080bc6d34be8011f1a7f38d9300fdb56be (diff)
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u-boot-imx-bdb04abe42d808223bec5c9e589109b5d3953a97.tar.gz
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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>
-rw-r--r--board/davinci/ea20/ea20.c23
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 */