mirror of
https://github.com/torvalds/linux
synced 2024-09-06 18:01:05 +00:00
MIPS: lantiq: dma: add small delay after reset
Reading the DMA registers immediately after the reset causes Data Bus Error. Adding a small delay fixes this issue. Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
339133f6c3
commit
c12aa581f6
|
@ -11,6 +11,7 @@
|
|||
#include <linux/export.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/of.h>
|
||||
|
||||
|
@ -222,6 +223,8 @@ ltq_dma_init(struct platform_device *pdev)
|
|||
clk_enable(clk);
|
||||
ltq_dma_w32_mask(0, DMA_RESET, LTQ_DMA_CTRL);
|
||||
|
||||
usleep_range(1, 10);
|
||||
|
||||
/* disable all interrupts */
|
||||
ltq_dma_w32(0, LTQ_DMA_IRNEN);
|
||||
|
||||
|
|
Loading…
Reference in a new issue