At Tue, 13 Oct 2009 19:28:24 +0530, Philby John wrote: > > From: Philby John <pjohn@xxxxxxxxxxxxx> > Date: Tue, 13 Oct 2009 16:30:22 +0530 > Subject: [PATCH] aaci: ARM1176 aaci-pl041 AC97 register read timeout > > After a reboot on an ARM1176 which amounts to a softreset, it has been > noted that the ALSA driver does not get registered and the probe fails > with the error "aaci-pl041 fpga:04: ac97 read back fail". In the process > of reading from a register the SL1TxBusy bit is set indicating that the > transceiver is busy and remains so until the default timeout occurs. > Set the Power down register 0x26 to an arbitrary value as specified in > the PL041 manual (page: 3-18) so that AACISL1TX/AACISL2TX registers take > their default state. > > Signed-off-by: Philby John <pjohn@xxxxxxxxxxxxx> Thanks, applied now. Takashi > --- > sound/arm/aaci.c | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-) > > diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c > index 89096e8..98b6ffe 100644 > --- a/sound/arm/aaci.c > +++ b/sound/arm/aaci.c > @@ -937,6 +937,7 @@ static int __devinit aaci_probe_ac97(struct aaci *aaci) > struct snd_ac97 *ac97; > int ret; > > + writel(0, aaci->base + AC97_POWERDOWN); > /* > * Assert AACIRESET for 2us > */ > -- > 1.6.3.3.MVISTA > > > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@xxxxxxxxxxxxxxxx > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
