[U-Boot] [PATCH 07/12] Davinci: ea20: add gpios for LCD backlight control
Stefano Babic
sbabic at denx.de
Wed Oct 5 11:43:34 CEST 2011
From: Bastian Ruppert <Bastian.Ruppert at Sewerin.de>
Signed-off-by: Bastian Ruppert <Bastian.Ruppert at Sewerin.de>
CC: Sandeep Paulraj <s-paulraj at ti.com>
---
board/davinci/ea20/ea20.c | 14 +++++++++++++-
1 files changed, 13 insertions(+), 1 deletions(-)
diff --git a/board/davinci/ea20/ea20.c b/board/davinci/ea20/ea20.c
index 1a57baf..c28d8df 100644
--- a/board/davinci/ea20/ea20.c
+++ b/board/davinci/ea20/ea20.c
@@ -95,7 +95,9 @@ const struct pinmux_config nand_pins[] = {
const struct pinmux_config gpio_pins[] = {
{ pinmux(13), 8, 0 }, /* GPIO6[15] RESETOUTn on SOM*/
{ pinmux(13), 8, 5 }, /* GPIO6[10] U0_SW0 on EA20-00101_2*/
- { pinmux(13), 8, 3 } /* GPIO6[12] U0_SW1 on EA20-00101_2*/
+ { pinmux(13), 8, 3 }, /* GPIO6[12] U0_SW1 on EA20-00101_2*/
+ { pinmux(19), 8, 5 }, /* GPIO6[1] DISP_ON */
+ { pinmux(14), 8, 1 } /* GPIO6[6] LCD_B_PWR*/
};
const struct pinmux_config halten_pin[] = {
@@ -144,6 +146,16 @@ int board_early_init_f(void)
&gpio6_base->set_data);
writel((readl(&gpio6_base->dir) & ~(1 << 12)), &gpio6_base->dir);
+ /* Set LCD_B_PWR low to power down LCD Backlight*/
+ writel((readl(&gpio6_base->set_data) & ~(1 << 6)),
+ &gpio6_base->set_data);
+ writel((readl(&gpio6_base->dir) & ~(1 << 6)), &gpio6_base->dir);
+
+ /* Set DISP_ON low to disable LCD output*/
+ writel((readl(&gpio6_base->set_data) & ~(1 << 1)),
+ &gpio6_base->set_data);
+ writel((readl(&gpio6_base->dir) & ~(1 << 1)), &gpio6_base->dir);
+
#ifndef CONFIG_USE_IRQ
irq_init();
#endif
--
1.7.1
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