From: Dan O'Donovan <dan@emutex.com>
To: Vinod Koul <vinod.koul@intel.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: CherryTrail SST firmware limitations query
Date: Thu, 28 Jan 2016 17:23:51 +0000 [thread overview]
Message-ID: <56AA4EA7.6060801@emutex.com> (raw)
In-Reply-To: <20160128162416.GR11130@localhost>
On 01/28/2016 04:24 PM, Vinod Koul wrote:
> On Thu, Jan 21, 2016 at 11:10:50PM +0000, Dan O'Donovan wrote:
>> (Sorry, re-sending as I wasn't subscribed to the alsa-devel mailing
>> list on my previous attempt)
>>
>> Hi Vinod
>>
>> I am currently attempting to use the SSP0 port on an Intel X5-Z8300
>> SoC (Cherry Trail) with a new codec.
>>
>> I have seen that you have committed SST firmware 'fw_sst_22a8.bin'
>> and related SST audio soc drivers in the past, so I hope you don't
>> mind if I ask you some questions about it here.
>>
>> Primarily, I am wondering if there are any limitations imposed by
>> that firmware binary that I need to be aware of. I haven't been able
>> to find much information about what this firmware does or doesn't
>> support.
> That binary is not for CHT. Each Bin is specfic to a platform. I have
> the BYT and BSW versions, but not CHT
>
>> For example, existing CHT SST machine drivers suggest that the PCM
>> bit clock is fixed at 19.2MHz.
> Yes, the MCLK will be 19.2 here
>
>> Also, I am wondering if all SSP ports on the SoC are supported by
>> that firmware, or if it is limited to just SSP2?
> SSP2, for SSP0 we need to get a new version
>
>> Are there any other limitations that I may need to be aware of in
>> the firmware (or in the SSP back-end driver) when attempting to
>> connect a new codec (TI PCM5122 initially) to SSP0.
> Bigger pole will be getting the firmware. Usually we support I2S and TDM
> modes
Thanks very much for your reply, Vinod! That probably explains why I'm
seeing clock signals from SSP0 but no audio data.
Can you tell me who I could contact to request SST firmware for CHT with
SSP0 support?
>
> HTH
next prev parent reply other threads:[~2016-01-28 17:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <56A162A1.1070602@emutex.com>
2016-01-21 23:10 ` CherryTrail SST firmware limitations query Dan O'Donovan
2016-01-28 16:24 ` Vinod Koul
2016-01-28 17:23 ` Dan O'Donovan [this message]
2016-01-28 18:05 ` Pierre-Louis Bossart
2016-01-28 21:20 ` Dan O'Donovan
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