diff options
| -rw-r--r-- | drivers/video/bcm2835.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/video/bcm2835.c b/drivers/video/bcm2835.c index bff1fcb..cd605e6 100644 --- a/drivers/video/bcm2835.c +++ b/drivers/video/bcm2835.c @@ -44,6 +44,7 @@ void lcd_ctrl_init(void *lcdbase) ALLOC_CACHE_ALIGN_BUFFER(struct msg_setup, msg_setup, 1); int ret; u32 w, h; + u32 fb_start, fb_end; debug("bcm2835: Query resolution...\n"); @@ -106,6 +107,14 @@ 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 */ + fb_start = gd->fb_base & ~(MMU_SECTION_SIZE - 1); + fb_end = gd->fb_base + msg_setup->allocate_buffer.body.resp.fb_size; + fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT); + mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start, + DCACHE_WRITEBACK); + lcd_set_flush_dcache(1); } void lcd_enable(void) |