To resolve USB camera bandwidth issue, increase the priority to make peripheral can fetch data from memory in time. Recommended AQoS setting from IC team value for peripheral and only on imx6qp.
The address is: 0xbb0608, the value is: 0x80000201
Signed-off-by: Ye.Li B37916@freescale.com Signed-off-by: Peng Fan Peng.Fan@freescale.com ---
Changes v2: improve comments
arch/arm/cpu/armv7/mx6/soc.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index bcfa2f6..e3e1494 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -424,6 +424,14 @@ int arch_cpu_init(void)
init_src();
+ /* + * To resolve USB camera bandwidth issue, increase the priority + * to make pheripheral can fetch data from memory in time. Recommended + * AQoS setting from IC team value for peripheral and only on imx6qp. + */ + if (is_mx6dqp()) + writel(0x80000201, 0xbb0608); + return 0; }