Pandaboard Outputs 1920x1200@30 DPI

board-omap4panda.c

static struct panel_generic_dpi_data omap4_lcd_panel = {
	.name			= "1920x1200",
};

struct omap_dss_device omap4_panda_lcd_device = {
	.type			= OMAP_DISPLAY_TYPE_DPI,
	.name			= "lcd",
	.driver_name	= "generic_dpi_panel",
	.data			= &omap4_lcd_panel,
	.phy.dpi.data_lines	= 24,
	.channel		= OMAP_DSS_CHANNEL_LCD2,
};

static struct omap_dss_device *omap4_panda_dss_devices[] = {
	&omap4_panda_lcd_device,
};

dispc.c.diff

diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index a9c8ccb..0604cdd 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -174,6 +174,7 @@ static void dispc_save_context(void)
        SR(IRQENABLE);
        SR(CONTROL);
        SR(CONFIG);
+       SR(GLOBAL_BUFFER);
        SR(DEFAULT_COLOR(OMAP_DSS_CHANNEL_LCD));
        SR(DEFAULT_COLOR(OMAP_DSS_CHANNEL_DIGIT));
        SR(TRANS_COLOR(OMAP_DSS_CHANNEL_LCD));
@@ -328,6 +329,7 @@ static void dispc_restore_context(void)
        /*RR(IRQENABLE);*/
        /*RR(CONTROL);*/
        RR(CONFIG);
+       RR(GLOBAL_BUFFER);
        RR(DEFAULT_COLOR(OMAP_DSS_CHANNEL_LCD));
        RR(DEFAULT_COLOR(OMAP_DSS_CHANNEL_DIGIT));
        RR(TRANS_COLOR(OMAP_DSS_CHANNEL_LCD));
@@ -4318,6 +4317,9 @@ static void _omap_dispc_initial_config(void)

        if (dss_has_feature(FEAT_GLOBAL_MFLAG))
                dispc_write_reg(DISPC_GLOBAL_MFLAG, 2);
+
+       DSSDBG("modify DISPC_GLOBAL_BUFFER=0x006D2240: allocate WB buffer for GF
+       dispc_write_reg(DISPC_GLOBAL_BUFFER, 0x006D2240);
 }

 /* DISPC HW IP initialisation */

dispc.h.diff

diff --git a/drivers/video/omap2/dss/dispc.h b/drivers/video/omap2/dss/dispc.h
index 53146cd..ec04007 100644
--- a/drivers/video/omap2/dss/dispc.h
+++ b/drivers/video/omap2/dss/dispc.h
@@ -35,6 +35,7 @@
 #define DISPC_GLOBAL_ALPHA             0x0074
 #define DISPC_CONTROL2                 0x0238
 #define DISPC_CONFIG2                  0x0620
+#define DISPC_GLOBAL_BUFFER            0x0800
 #define DISPC_DIVISOR                  0x0804
 #define DISPC_GLOBAL_MFLAG             0x085C

modedb.c

static const struct fb_videomode modedb[] = {
	/* 1920x1200 @ 30 Hz */
	{ NULL, 60, 1920, 1200, 12847, 80, 48, 26, 13, 32, 6,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
		FB_VMODE_NONINTERLACED },
};

panel-generic-dpi.c

static struct panel_config generic_dpi_panels[] = {
	/* 1920x1200 30Hz */
	{
		{
			.x_res		= 1920,
			.y_res		= 1200,

			.pixel_clock	= 77688,

			.hfp		= 48,
			.hsw		= 32,
			.hbp		= 80,

			.vfp		= 13,
			.vsw		= 6,
			.vbp		= 26,
		},
		.acbi			= 0x0,
		.acb			= 0x0,
		.config 		= OMAP_DSS_LCD_TFT,
		.power_on_delay 	= 0,
		.power_off_delay	= 0,
		.name			= "1920x1200",
	},
};