diff options
| author | Chen Liangjun <b36089@freescale.com> | 2012-05-04 17:49:51 +0800 |
|---|---|---|
| committer | Xinyu Chen <xinyu.chen@freescale.com> | 2012-05-08 16:07:06 +0800 |
| commit | a684b785321acc7043307b537f7622cdc237c7d0 (patch) | |
| tree | 4c094fe3e95ee396cfa4511201b7a8125ec18566 | |
| parent | b878b33cfb2028ea9be2c31920d977f28a934346 (diff) | |
ENGR00181697 HDMI: fix ahb bus error bug
In ARIK, to prevent noise cause by false triggered burst, we reduce
the incr type to 4. and the change may cause bus_error because a
burst may unexpectly stop and thus an AHB bus error happens.
Reset HDMI Audio FIFO state to prevent AHB bus error.
Signed-off-by: Chen Liangjun <b36089@freescale.com>
| -rw-r--r-- | sound/soc/imx/imx-hdmi-dma.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/soc/imx/imx-hdmi-dma.c b/sound/soc/imx/imx-hdmi-dma.c index ac7ac5d6e3fb..d391267c108b 100644 --- a/sound/soc/imx/imx-hdmi-dma.c +++ b/sound/soc/imx/imx-hdmi-dma.c @@ -24,6 +24,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/slab.h> +#include <linux/delay.h> #include <sound/core.h> #include <sound/initval.h> @@ -883,6 +884,9 @@ static int hdmi_dma_trigger(struct snd_pcm_substream *substream, int cmd) } dumpregs(); + hdmi_fifo_reset(); + udelay(1); + hdmi_dma_priv->tx_active = true; hdmi_dma_start(); hdmi_dma_irq_mask(0); |