Index: bcm2835_fbd.c
===================================================================
--- bcm2835_fbd.c	(Revision 351452)
+++ bcm2835_fbd.c	(Arbeitskopie)
@@ -85,7 +85,14 @@
 	memset(fb, 0, sizeof(*fb));
 	if (bcm2835_mbox_fb_get_w_h(fb) != 0)
 		return (ENXIO);
-	fb->bpp = FB_DEPTH;
+	if (bcm2835_mbox_fb_get_bpp(fb) != 0)
+		return (ENXIO);
+	if (fb->bpp < FB_DEPTH) {
+		device_printf(sc->dev, "Changing fb bpp from %d to %d\n", fb->bpp, FB_DEPTH);
+		fb->bpp = FB_DEPTH;
+	} else {
+		device_printf(sc->dev, "Keeping existing fb bpp of %d\n", fb->bpp);
+	}
 
 	fb->vxres = fb->xres;
 	fb->vyres = fb->yres;
Index: bcm2835_mbox.c
===================================================================
--- bcm2835_mbox.c	(Revision 351452)
+++ bcm2835_mbox.c	(Arbeitskopie)
@@ -499,6 +499,27 @@
 }
 
 int
+bcm2835_mbox_fb_get_bpp(struct bcm2835_fb_config *fb)
+{
+	int err;
+	struct msg_fb_get_bpp msg;
+	
+	memset(&msg, 0, sizeof(msg));
+	msg.hdr.buf_size = sizeof(msg);
+	msg.hdr.code = BCM2835_MBOX_CODE_REQ;
+	BCM2835_MBOX_INIT_TAG(&msg.bpp, GET_DEPTH);
+	msg.bpp.tag_hdr.val_len = 0;
+	msg.end_tag = 0;
+	
+	err = bcm2835_mbox_property(&msg, sizeof(msg));
+	if (err == 0) {
+		fb->bpp = msg.bpp.body.resp.bpp;
+	}
+	
+	return (err);
+}
+
+int
 bcm2835_mbox_fb_init(struct bcm2835_fb_config *fb)
 {
 	int err;
Index: bcm2835_mbox_prop.h
===================================================================
--- bcm2835_mbox_prop.h	(Revision 351452)
+++ bcm2835_mbox_prop.h	(Arbeitskopie)
@@ -474,6 +474,14 @@
 
 int bcm2835_mbox_fb_get_w_h(struct bcm2835_fb_config *);
 
+struct msg_fb_get_bpp {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_depth bpp;
+	uint32_t end_tag;
+};
+
+int bcm2835_mbox_fb_get_bpp(struct bcm2835_fb_config *);
+
 struct msg_fb_setup {
 	struct bcm2835_mbox_hdr hdr;
 	struct bcm2835_mbox_tag_fb_w_h physical_w_h;