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authorJohn Bonesio <bones@secretlab.ca>2009-07-21 13:15:40 -0700
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-07-22 00:07:51 +0100
commited0f19b23754dc24f9a2d3c266a36277410f4686 (patch)
tree71410ddd79f86ec0f753ce5c1fab35642b1e4477 /sound/soc/fsl
parentbca146578c863a1f37cb191995317e855a0364e1 (diff)
ASoC: MPC5200: Increase the delay time between resets
Reset was failing with the original udelay(50) between the code in psc_ac97_cold_reset() and the call to psc_ac97_warm_reset(). Through testing it was found that a delay of 1ms was necessary for the cold_reset code to consistently complete successfully. Signed-off-by: John Bonesio <bones@secretlab.ca> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/fsl')
-rw-r--r--sound/soc/fsl/mpc5200_psc_ac97.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/soc/fsl/mpc5200_psc_ac97.c b/sound/soc/fsl/mpc5200_psc_ac97.c
index 7eb549985d4..c4ae3e096bb 100644
--- a/sound/soc/fsl/mpc5200_psc_ac97.c
+++ b/sound/soc/fsl/mpc5200_psc_ac97.c
@@ -12,6 +12,7 @@
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
+#include <linux/delay.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
@@ -112,7 +113,7 @@ static void psc_ac97_cold_reset(struct snd_ac97 *ac97)
out_8(&regs->op1, MPC52xx_PSC_OP_RES);
udelay(10);
out_8(&regs->op0, MPC52xx_PSC_OP_RES);
- udelay(50);
+ msleep(1);
psc_ac97_warm_reset(ac97);
}