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From: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
To: Lars-Peter Clausen <lars@metafoo.de>, <tiwai@suse.de>, <perex@perex.cz>
Cc: <broonie@kernel.org>, <lgirdwood@gmail.com>,
	<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
	<alsa-devel@alsa-project.org>
Subject: Re: [PATCH 4/4] sound: jz4740: Enable codec clock during dai_probe
Date: Mon, 26 Jan 2015 11:30:56 +0000	[thread overview]
Message-ID: <54C62570.5050600@imgtec.com> (raw)
In-Reply-To: <54C61980.9030205@metafoo.de>


On 26/01/15 10:40, Lars-Peter Clausen wrote:
> On 01/26/2015 11:18 AM, Zubair Lutfullah Kakakhel wrote:
>> As we are moving away from platform to DT, we cant rely on the board
>> file to do this now. So enable it here.
> 
> I don't understand this changelog. The board file never did this. The driver enables the clock in the startup() callback.

My bad.

I couldn't get the ci20 audio to work without this change.

I double checked. The clock is indeed enabled.

But the rate needs to be set for the ci20.

clk_set_rate(i2s->clk_i2s, 12000000);

Where should I put it? I couldn’t trace how the rate is set for the jz4740..

ZubairLK

> 
>>
>> Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
>> ---
>>   sound/soc/jz4740/jz4740-i2s.c | 4 ++++
>>   1 file changed, 4 insertions(+)
>>
>> diff --git a/sound/soc/jz4740/jz4740-i2s.c b/sound/soc/jz4740/jz4740-i2s.c
>> index 3c309fc..a7e4a7b 100644
>> --- a/sound/soc/jz4740/jz4740-i2s.c
>> +++ b/sound/soc/jz4740/jz4740-i2s.c
>> @@ -376,6 +376,10 @@ static int jz4740_i2s_dai_probe(struct snd_soc_dai *dai)
>>           JZ_AIC_CONF_I2S |
>>           JZ_AIC_CONF_INTERNAL_CODEC;
>>
>> +    /* enable codec sysclk */
>> +    clk_set_rate(i2s->clk_i2s, 12000000);
>> +    clk_prepare_enable(i2s->clk_i2s);
>> +
>>       jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, JZ_AIC_CONF_RESET);
>>       jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
>>
>>
> 

  reply	other threads:[~2015-01-26 11:31 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-26 10:18 [PATCH 0/4] sound:soc: jz4740: DT, dynamic sampling, enable clocks Zubair Lutfullah Kakakhel
2015-01-26 10:18 ` [PATCH 1/4] sound: soc: jz4740: Add dynamic sampling rate support to jz4740-i2s Zubair Lutfullah Kakakhel
2015-01-26 10:35   ` Lars-Peter Clausen
2015-01-26 10:18 ` [PATCH 2/4] dt: sound: jz4740: Add binding documentation for jz4740-i2s Zubair Lutfullah Kakakhel
2015-01-26 10:37   ` Lars-Peter Clausen
2015-01-26 11:32     ` Zubair Lutfullah Kakakhel
2015-01-26 11:38       ` [alsa-devel] " Lars-Peter Clausen
2015-01-26 11:56   ` Arnd Bergmann
2015-01-26 10:18 ` [PATCH 3/4] sound: soc: jz4740: Add DT support to jz4740-i2s driver Zubair Lutfullah Kakakhel
2015-01-26 10:18 ` [PATCH 4/4] sound: jz4740: Enable codec clock during dai_probe Zubair Lutfullah Kakakhel
2015-01-26 10:40   ` Lars-Peter Clausen
2015-01-26 11:30     ` Zubair Lutfullah Kakakhel [this message]
2015-01-26 11:42       ` [alsa-devel] " Lars-Peter Clausen

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