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Commit fa5407ad authored by Petr Cvek's avatar Petr Cvek Committed by Robert Jarzmik
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ARM: pxa: magician: Optimize powerup delays for Samsung LCD 



Delays for the Samsung LCD are greater than needed. These values were
extracted from a datasheet.

Signed-off-by: default avatarPetr Cvek <petr.cvek@tul.cz>
Acked-by: default avatarPhilipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: default avatarRobert Jarzmik <robert.jarzmik@free.fr>
parent 6001ae70

arch/arm/mach-pxa/magician.c

+6 −8
Original line number Diff line number Diff line
@@ -299,21 +299,19 @@ static void samsung_lcd_power(int on, struct fb_var_screeninfo *si) 
			gpio_set_value(GPIO75_MAGICIAN_SAMSUNG_POWER, 1);

		else

			gpio_set_value(EGPIO_MAGICIAN_LCD_POWER, 1);

		mdelay(10);

		mdelay(6);

		gpio_set_value(GPIO106_MAGICIAN_LCD_DCDC_NRESET, 1);

		mdelay(10);

		mdelay(6);	/* Avdd -> Voff >5ms */

		gpio_set_value(GPIO104_MAGICIAN_LCD_VOFF_EN, 1);

		mdelay(30);

		mdelay(16);	/* Voff -> Von >(5+10)ms */

		gpio_set_value(GPIO105_MAGICIAN_LCD_VON_EN, 1);

		mdelay(10);

	} else {

		mdelay(10);

		gpio_set_value(GPIO105_MAGICIAN_LCD_VON_EN, 0);

		mdelay(30);

		mdelay(16);

		gpio_set_value(GPIO104_MAGICIAN_LCD_VOFF_EN, 0);

		mdelay(10);

		mdelay(6);

		gpio_set_value(GPIO106_MAGICIAN_LCD_DCDC_NRESET, 0);

		mdelay(10);

		mdelay(6);

		if (system_rev < 3)

			gpio_set_value(GPIO75_MAGICIAN_SAMSUNG_POWER, 0);

		else