From: lw@rock-chips.com <lw@rock-chips.com>
Date: Sat, 25 Aug 2012 07:01:33 +0000 (+0800)
Subject: phonepad:add pre_div parameter for backlight
X-Git-Tag: firefly_0821_release~8839
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=c4d1c682d604e5f01c2f5653d0cee2b6dab077ae;p=firefly-linux-kernel-4.4.55.git

phonepad:add pre_div parameter for backlight
---

diff --git a/arch/arm/mach-rk30/board-rk30-phonepad.c b/arch/arm/mach-rk30/board-rk30-phonepad.c
index 634e14b82d86..d86c6475bda7 100755
--- a/arch/arm/mach-rk30/board-rk30-phonepad.c
+++ b/arch/arm/mach-rk30/board-rk30-phonepad.c
@@ -780,6 +780,7 @@ static struct rk29_bl_info rk29_bl_info = {
 	.io_deinit = rk29_backlight_io_deinit,
 	.pwm_suspend = rk29_backlight_pwm_suspend,
 	.pwm_resume = rk29_backlight_pwm_resume,
+	.pre_div = 20000,
 };
 
 static struct platform_device rk29_device_backlight = {
@@ -1224,9 +1225,9 @@ static int rk_fb_io_disable(void)
 }
 static int rk_fb_io_enable(void)
 {
+	gpio_set_value(LCD_EN_PIN, LCD_EN_VALUE);	
 	gpio_set_value(LCD_CS_PIN, LCD_CS_VALUE);
-	gpio_set_value(LCD_EN_PIN, LCD_EN_VALUE);
-	msleep(30);
+	msleep(150);	//wait for power stable
 	return 0;
 }