[RFC 1/2] ARM:Tegra: Device Tree Support: Initialize the audio card from the device tree.

[Grant Likely]

On Wed, Jun 1, 2011 at 1:07 AM, Barry Song <21cnbao at gmail.com> wrote:
> 2011/5/28 John Bonesio <bones at secretlab.ca>:
>> This patch makes it so the top level audio card is initialized from the device
>> tree. This is just the first step getting the audio complex of devices
>> iniialized from device tree nodes.
>>
>> Signed-off-by: John Bonesio<bones at secretlab.ca>
>> ---
>>
>>  arch/arm/boot/dts/tegra-harmony.dts |    4 +++
>>  arch/arm/mach-tegra/board-dt.c      |    3 ++
>>  sound/soc/tegra/harmony.c           |   45 ++++++++++++++++++++++++++++++++---
>>  3 files changed, 48 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/tegra-harmony.dts b/arch/arm/boot/dts/tegra-harmony.dts
>> index 05521a5..217a7f0 100644
>> --- a/arch/arm/boot/dts/tegra-harmony.dts
>> +++ b/arch/arm/boot/dts/tegra-harmony.dts
>> @@ -53,6 +53,10 @@
>>                clock-frequency = <400000>;
>>        };
>>
>> +       harmony_audio: audio_card {
>> +               compatible = "nvidia,harmony-audio";
>> +       };
>> +
>>        serial at 70006300 {
>>                status = "ok";
>>                clock-frequency = < 216000000 >;
>> diff --git a/arch/arm/mach-tegra/board-dt.c b/arch/arm/mach-tegra/board-dt.c
>> index c498e84..a569ad9 100644
>> --- a/arch/arm/mach-tegra/board-dt.c
>> +++ b/arch/arm/mach-tegra/board-dt.c
>> @@ -56,6 +56,9 @@ static struct platform_device *tegra250_devices[] __initdata = {
>>        &tegra_i2c_device2,
>>        &tegra_i2c_device3,
>>        &tegra_i2c_device4,
>> +       &tegra_i2s_device1,
>> +       &tegra_das_device,
>> +       &tegra_pcm_device,
>
> i am thinking whether platform_device should be created by
> of_platform_device_create after scanning device tree, but not by
> hard-code? looks like the two patches are only trying to let device
> tree deliver gpio to drivers?

Can you please restate your question?  I don't think I understand what
you are trying to ask.

g.