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 <ag...@suse.de>
---
v2 -> v3:
- Fix align parameters
- Fix whitespace
---
drivers/video/bcm2835.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/video/bcm2835.c b/drivers/video/bcm2835.c
index bff1fcb..7c99e2d 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(msg_setup->allocate_buffer.body.resp.fb_size, PAGE_SIZE),
+ DCACHE_WRITEBACK);
+ lcd_set_flush_dcache(1);
}
void lcd_enable(void)
--
1.8.5.6
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