[U-Boot] [PATCH v2 5/5] bcm2835 video: Map fb as cached

[Alexander Graf]

The bcm2835 frame buffer is in RAM, so we can easily map it as cached and gain
all the glorious performance boost that brings with it.

Signed-off-by: Alexander Graf <agraf at suse.de>
---
 drivers/video/bcm2835.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/video/bcm2835.c b/drivers/video/bcm2835.c
index bff1fcb..fe49f2e 100644
--- a/drivers/video/bcm2835.c
+++ b/drivers/video/bcm2835.c
@@ -106,6 +106,12 @@ void lcd_ctrl_init(void *lcdbase)
 
 	gd->fb_base = bus_to_phys(
 		msg_setup->allocate_buffer.body.resp.fb_address);
+
+	/* Enable dcache for the frame buffer */
+        mmu_set_region_dcache_behaviour(gd->fb_base,
+		ALIGN(PAGE_SIZE, msg_setup->allocate_buffer.body.resp.fb_size),
+		DCACHE_WRITEBACK);
+	lcd_set_flush_dcache(1);
 }
 
 void lcd_enable(void)
-- 
1.8.5.6