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

Am 15.03.2016 um 18:21 schrieb 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@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,
  

Spaces vs. tab.

Andreas

• ALIGN(PAGE_SIZE, msg_setup->allocate_buffer.body.resp.fb_size),
  

• DCACHE_WRITEBACK);
  

• lcd_set_flush_dcache(1);

}

void lcd_enable(void)