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ASoC: MPC5200: Increase the delay time between resets

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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>
This commit is contained in:
John Bonesio 2009-07-21 13:15:40 -07:00 committed by Mark Brown
parent bca146578c
commit ed0f19b237
1 changed files with 2 additions and 1 deletions
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3
sound/soc/fsl/mpc5200_psc_ac97.c
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@ -12,6 +12,7 @@
#include <linux/module.h> #include <linux/module.h>
#include <linux/of_device.h> #include <linux/of_device.h>
#include <linux/of_platform.h> #include <linux/of_platform.h>
#include <linux/delay.h>
#include <sound/pcm.h> #include <sound/pcm.h>
#include <sound/pcm_params.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); out_8(&regs->op1, MPC52xx_PSC_OP_RES);
udelay(10); udelay(10);
out_8(&regs->op0, MPC52xx_PSC_OP_RES); out_8(&regs->op0, MPC52xx_PSC_OP_RES);
udelay(50); msleep(1);
psc_ac97_warm_reset(ac97); psc_ac97_warm_reset(ac97);
} }