[PATCH 0/6] ARM: DT/davinci: Audio for da850-evm in DT boot

[PATCH 0/6] ARM: DT/davinci: Audio for da850-evm in DT boot

[Peter Ujfalusi]

Hi,

The following series will enable audio via simple card on the board when booted
with DT.

For edma one patch is needed to have working dma:
http://marc.info/?l=linux-omap&m=140680159327749&w=2

Regards,
Peter
---
Peter Ujfalusi (6):
  ARM: davinci: da8xx-dt: add OF_DEV_AUXDATA entry for mcasp0
  ARM: DTS: da850: Add node for edma0
  ARM: DTS: da850: Add node for McASP
  ARM: DTS: da850-evm: Enable McASP via DT boot
  ARM: DTS: da850-evm: Add node for tlv320aic3106 codec
  ARM: DTS: da850-evm: Enable audio via simple-card

 arch/arm/boot/dts/da850-evm.dts  | 72 ++++++++++++++++++++++++++++++++++++++++
 arch/arm/boot/dts/da850.dtsi     | 19 +++++++++++
 arch/arm/mach-davinci/da8xx-dt.c |  1 +
 3 files changed, 92 insertions(+)

-- 
2.0.2

[PATCH 1/6] ARM: davinci: da8xx-dt: add OF_DEV_AUXDATA entry for mcasp0

[Peter Ujfalusi]

Add OF_DEV_AUXDATA for mcasp to be able to use clocks.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
 arch/arm/mach-davinci/da8xx-dt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-davinci/da8xx-dt.c b/arch/arm/mach-davinci/da8xx-dt.c
index ed1928740b5f..f703d82f08a8 100644
--- a/arch/arm/mach-davinci/da8xx-dt.c
+++ b/arch/arm/mach-davinci/da8xx-dt.c
@@ -46,6 +46,7 @@ static struct of_dev_auxdata da850_auxdata_lookup[] __initdata = {
 	OF_DEV_AUXDATA("ti,davinci_mdio", 0x01e24000, "davinci_mdio.0", NULL),
 	OF_DEV_AUXDATA("ti,davinci-dm6467-emac", 0x01e20000, "davinci_emac.1",
 		       NULL),
+	OF_DEV_AUXDATA("ti,da830-mcasp-audio", 0x01d00000, "davinci-mcasp.0", NULL),
 	{}
 };
 
-- 
2.0.2

[PATCH 2/6] ARM: DTS: da850: Add node for edma0

[Peter Ujfalusi]

Add DT node for edma0.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
 arch/arm/boot/dts/da850.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
index b695548dbb4e..41ce4e8bf227 100644
--- a/arch/arm/boot/dts/da850.dtsi
+++ b/arch/arm/boot/dts/da850.dtsi
@@ -150,6 +150,12 @@
 			};
 
 		};
+		edma0: edma@01c00000 {
+			compatible = "ti,edma3";
+			reg =	<0x0 0x10000>;
+			interrupts = <11 13 12>;
+			#dma-cells = <1>;
+		};
 		serial0: serial@1c42000 {
 			compatible = "ns16550a";
 			reg = <0x42000 0x100>;
-- 
2.0.2

Re: [PATCH 2/6] ARM: DTS: da850: Add node for edma0

[Sergei Shtylyov]

On 07/31/2014 02:18 PM, Peter Ujfalusi wrote:

> Add DT node for edma0.

> Signed-off-by: Peter Ujfalusi <peter.ujfalusi-l0cyMroinI0@public.gmane.org>
> ---
>   arch/arm/boot/dts/da850.dtsi | 6 ++++++
>   1 file changed, 6 insertions(+)

> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
> index b695548dbb4e..41ce4e8bf227 100644
> --- a/arch/arm/boot/dts/da850.dtsi
> +++ b/arch/arm/boot/dts/da850.dtsi
> @@ -150,6 +150,12 @@
>   			};
>
>   		};
> +		edma0: edma@01c00000 {
> +			compatible = "ti,edma3";
> +			reg =	<0x0 0x10000>;

    Why the mismatch between the unit-address part of the node name and the 
"reg" property?

> +			interrupts = <11 13 12>;
> +			#dma-cells = <1>;
> +		};

WBR, Sergei

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Re: [PATCH 2/6] ARM: DTS: da850: Add node for edma0

[Peter Ujfalusi]

On 07/31/2014 05:26 PM, Sergei Shtylyov wrote:
> On 07/31/2014 02:18 PM, Peter Ujfalusi wrote:
> 
>> Add DT node for edma0.
> 
>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi-l0cyMroinI0@public.gmane.org>
>> ---
>>   arch/arm/boot/dts/da850.dtsi | 6 ++++++
>>   1 file changed, 6 insertions(+)
> 
>> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
>> index b695548dbb4e..41ce4e8bf227 100644
>> --- a/arch/arm/boot/dts/da850.dtsi
>> +++ b/arch/arm/boot/dts/da850.dtsi
>> @@ -150,6 +150,12 @@
>>               };
>>
>>           };
>> +        edma0: edma@01c00000 {
>> +            compatible = "ti,edma3";
>> +            reg =    <0x0 0x10000>;
> 
>    Why the mismatch between the unit-address part of the node name and the
> "reg" property?

For some reason the whole da850 uses offset from 0x01c00000 for the SoC IPs.
The nodes are under 'soc' and that has the ranges attribute.
I do not really like this either.

> 
>> +            interrupts = <11 13 12>;
>> +            #dma-cells = <1>;
>> +        };
> 
> WBR, Sergei
> 

-- 
Péter

Re: [PATCH 2/6] ARM: DTS: da850: Add node for edma0

[Sekhar Nori]

On Friday 01 August 2014 10:39 AM, Peter Ujfalusi wrote:
> On 07/31/2014 05:26 PM, Sergei Shtylyov wrote:
>> On 07/31/2014 02:18 PM, Peter Ujfalusi wrote:
>>
>>> Add DT node for edma0.
>>
>>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi-l0cyMroinI0@public.gmane.org>
>>> ---
>>>   arch/arm/boot/dts/da850.dtsi | 6 ++++++
>>>   1 file changed, 6 insertions(+)
>>
>>> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
>>> index b695548dbb4e..41ce4e8bf227 100644
>>> --- a/arch/arm/boot/dts/da850.dtsi
>>> +++ b/arch/arm/boot/dts/da850.dtsi
>>> @@ -150,6 +150,12 @@
>>>               };
>>>
>>>           };
>>> +        edma0: edma@01c00000 {
>>> +            compatible = "ti,edma3";
>>> +            reg =    <0x0 0x10000>;
>>
>>    Why the mismatch between the unit-address part of the node name and the
>> "reg" property?
> 
> For some reason the whole da850 uses offset from 0x01c00000 for the SoC IPs.
> The nodes are under 'soc' and that has the ranges attribute.
> I do not really like this either.

There is no reason I can remember for why we chose to go the offset +
ranges way. Probably based it on an early OMAP example. Right now lets
keep it that way unless there is a big disadvantage.

Thanks,
Sekhar

[PATCH 3/6] ARM: DTS: da850: Add node for McASP

[Peter Ujfalusi]

Node for mcasp0

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
 arch/arm/boot/dts/da850.dtsi | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
index 41ce4e8bf227..0bd98cd00816 100644
--- a/arch/arm/boot/dts/da850.dtsi
+++ b/arch/arm/boot/dts/da850.dtsi
@@ -276,6 +276,19 @@
 			ti,davinci-gpio-unbanked = <0>;
 			status = "disabled";
 		};
+
+		mcasp0: mcasp@01d00000 {
+			compatible = "ti,da830-mcasp-audio";
+			reg = <0x100000 0x2000>,
+			      <0x102000 0x400000>;
+			reg-names = "mpu", "dat";
+			interrupts = <54>;
+			interrupt-names = "common";
+			status = "disabled";
+			dmas = <&edma0 1>,
+				<&edma0 0>;
+			dma-names = "tx", "rx";
+		};
 	};
 	nand_cs3@62000000 {
 		compatible = "ti,davinci-nand";
-- 
2.0.2

[PATCH 4/6] ARM: DTS: da850-evm: Enable McASP via DT boot

[Peter Ujfalusi]

Add pinctrl nodes for the McASP0 pins and configure McASP to the desired
mode for the board.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi-l0cyMroinI0@public.gmane.org>
---
 arch/arm/boot/dts/da850-evm.dts | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
index 1e11e5a5f723..09118c72e83f 100644
--- a/arch/arm/boot/dts/da850-evm.dts
+++ b/arch/arm/boot/dts/da850-evm.dts
@@ -17,6 +17,18 @@
 	soc {
 		pmx_core: pinmux@1c14120 {
 			status = "okay";
+
+			mcasp0_pins: pinmux_mcasp0_pins {
+				pinctrl-single,bits = <
+					/*
+					 * AHCLKX, ACLKX, AFSX, AHCLKR, ACLKR,
+					 * AFSR, AMUTE
+					 */
+					0x00 0x11111111 0xffffffff
+					/* AXR11, AXR12 */
+					0x04 0x00011000 0x000ff000
+				>;
+			};
 		};
 		serial0: serial@1c42000 {
 			status = "okay";
@@ -170,3 +182,22 @@
 		};
 	};
 };
+
+&mcasp0 {
+	#sound-dai-cells = <0>;
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcasp0_pins>;
+
+	op-mode = <0>;          /* MCASP_IIS_MODE */
+	tdm-slots = <2>;
+	/* 4 serializer */
+	serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */
+		0 0 0 0
+		0 0 0 0
+		0 0 0 1
+		2 0 0 0
+	>;
+	tx-num-evt = <32>;
+	rx-num-evt = <32>;
+};
-- 
2.0.2

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[PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec

[Peter Ujfalusi]

The board uses aic3106 for audio.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
 arch/arm/boot/dts/da850-evm.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
index 09118c72e83f..b9ef2be0b145 100644
--- a/arch/arm/boot/dts/da850-evm.dts
+++ b/arch/arm/boot/dts/da850-evm.dts
@@ -51,6 +51,20 @@
 			tps: tps@48 {
 				reg = <0x48>;
 			};
+			tlv320aic3106: tlv320aic3106@1b {
+				#sound-dai-cells = <0>;
+				compatible = "ti,tlv320aic3106";
+				reg = <0x18>;
+				status = "okay";
+
+				/* Regulators */
+				IOVDD-supply = <&vdcdc2_reg>;
+				/* Derived from VBAT: Baseboard 3.3V / 1.8V */
+				AVDD-supply = <&vbat>;
+				DRVDD-supply = <&vbat>;
+				DVDD-supply = <&vbat>;
+			};
+
 		};
 		wdt: wdt@1c21000 {
 			status = "okay";
-- 
2.0.2

Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec

[Sergei Shtylyov]

Hello.

On 07/31/2014 02:18 PM, Peter Ujfalusi wrote:

> The board uses aic3106 for audio.

> Signed-off-by: Peter Ujfalusi <peter.ujfalusi-l0cyMroinI0@public.gmane.org>
> ---
>   arch/arm/boot/dts/da850-evm.dts | 14 ++++++++++++++
>   1 file changed, 14 insertions(+)

> diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
> index 09118c72e83f..b9ef2be0b145 100644
> --- a/arch/arm/boot/dts/da850-evm.dts
> +++ b/arch/arm/boot/dts/da850-evm.dts
> @@ -51,6 +51,20 @@
>   			tps: tps@48 {
>   				reg = <0x48>;
>   			};
> +			tlv320aic3106: tlv320aic3106@1b {

    The "reg" property is <0x18>, why the unit-address part of a name is 
different? Also, the ePAPR standard [1] says:

The name of a node should be somewhat generic, reflecting the function of the 
device and not its precise programming model.

> +				#sound-dai-cells = <0>;
> +				compatible = "ti,tlv320aic3106";
> +				reg = <0x18>;
> +				status = "okay";
> +
> +				/* Regulators */
> +				IOVDD-supply = <&vdcdc2_reg>;
> +				/* Derived from VBAT: Baseboard 3.3V / 1.8V */
> +				AVDD-supply = <&vbat>;
> +				DRVDD-supply = <&vbat>;
> +				DVDD-supply = <&vbat>;
> +			};
> +

[1] http://www.power.org/resources/downloads/Power_ePAPR_APPROVED_v1.0.pdf

WBR, Sergei

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Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec

[Peter Ujfalusi]

On 07/31/2014 05:24 PM, Sergei Shtylyov wrote:
> Hello.
> 
> On 07/31/2014 02:18 PM, Peter Ujfalusi wrote:
> 
>> The board uses aic3106 for audio.
> 
>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi-l0cyMroinI0@public.gmane.org>
>> ---
>>   arch/arm/boot/dts/da850-evm.dts | 14 ++++++++++++++
>>   1 file changed, 14 insertions(+)
> 
>> diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
>> index 09118c72e83f..b9ef2be0b145 100644
>> --- a/arch/arm/boot/dts/da850-evm.dts
>> +++ b/arch/arm/boot/dts/da850-evm.dts
>> @@ -51,6 +51,20 @@
>>               tps: tps@48 {
>>                   reg = <0x48>;
>>               };
>> +            tlv320aic3106: tlv320aic3106@1b {
> 
>    The "reg" property is <0x18>, why the unit-address part of a name is
> different?

True, I have lifted the codec part from other dts file and overlooked the
unit-address.
I will resend the series with this fixed.


> Also, the ePAPR standard [1] says:
> 
> The name of a node should be somewhat generic, reflecting the function of the
> device and not its precise programming model.

True. This is why the node for the audio support is named as 'sound'. For the
components, like in this case I do not see issue to call the audio codec with
it's name.

> 
>> +                #sound-dai-cells = <0>;
>> +                compatible = "ti,tlv320aic3106";
>> +                reg = <0x18>;
>> +                status = "okay";
>> +
>> +                /* Regulators */
>> +                IOVDD-supply = <&vdcdc2_reg>;
>> +                /* Derived from VBAT: Baseboard 3.3V / 1.8V */
>> +                AVDD-supply = <&vbat>;
>> +                DRVDD-supply = <&vbat>;
>> +                DVDD-supply = <&vbat>;
>> +            };
>> +
> 
> [1] http://www.power.org/resources/downloads/Power_ePAPR_APPROVED_v1.0.pdf

BTW: there's a newer version available:
https://www.power.org/wp-content/uploads/2012/06/Power_ePAPR_APPROVED_v1.1.pdf

> 
> WBR, Sergei
> 


-- 
Péter

Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec

[Sergei Shtylyov]

Hello.

On 01-08-2014 9:22, Peter Ujfalusi wrote:

>>> The board uses aic3106 for audio.

>>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi-l0cyMroinI0@public.gmane.org>
>>> ---
>>>    arch/arm/boot/dts/da850-evm.dts | 14 ++++++++++++++
>>>    1 file changed, 14 insertions(+)

>>> diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
>>> index 09118c72e83f..b9ef2be0b145 100644
>>> --- a/arch/arm/boot/dts/da850-evm.dts
>>> +++ b/arch/arm/boot/dts/da850-evm.dts
>>> @@ -51,6 +51,20 @@
>>>                tps: tps@48 {
>>>                    reg = <0x48>;
>>>                };
>>> +            tlv320aic3106: tlv320aic3106@1b {

[...]

>> Also, the ePAPR standard [1] says:

>> The name of a node should be somewhat generic, reflecting the function of the
>> device and not its precise programming model.

> True. This is why the node for the audio support is named as 'sound'. For the
> components, like in this case I do not see issue to call the audio codec with
> it's name.

    I do. We should follow the standard consistently. Why not call the node 
"sound-codec"?

WBR, Sergei

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Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec

[Peter Ujfalusi]

On 08/01/2014 03:49 PM, Sergei Shtylyov wrote:
>    I do. We should follow the standard consistently. Why not call the node
> "sound-codec"?

Well, there is _zero_ cases when the audio codec node is named as
"sound-codec" in linux-next but we have wmXXXX, tlvXXXX, twlXXXX, maxXXXX etc.
Yeah, there are few DTS files which have codec as node name.
So, no, I'm not going to change the node name from tlv320aic3106.

-- 
Péter

Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec

[Sergei Shtylyov]

Hello.

On 08/01/2014 05:02 PM, Peter Ujfalusi wrote:

>>     I do. We should follow the standard consistently. Why not call the node
>> "sound-codec"?

> Well, there is _zero_ cases when the audio codec node is named as
> "sound-codec" in linux-next but we have wmXXXX, tlvXXXX, twlXXXX, maxXXXX etc.

    Which only means people don't read the standard (which is referred to on 
http://www.devicetree.org/Device_Tree_Usage, that says the same).

> Yeah, there are few DTS files which have codec as node name.
> So, no, I'm not going to change the node name from tlv320aic3106.

    So you prefer following the bad examples to following the standard? Well, 
"the Moor has done his duty, the Moor can go"...

WBR, Sergei

Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec

[Peter Ujfalusi]

Hi,

On 08/01/2014 04:13 PM, Sergei Shtylyov wrote:
> Hello.
> 
> On 08/01/2014 05:02 PM, Peter Ujfalusi wrote:
> 
>>>     I do. We should follow the standard consistently. Why not call the node
>>> "sound-codec"?
> 
>> Well, there is _zero_ cases when the audio codec node is named as
>> "sound-codec" in linux-next but we have wmXXXX, tlvXXXX, twlXXXX, maxXXXX etc.
> 
>    Which only means people don't read the standard (which is referred to on
> http://www.devicetree.org/Device_Tree_Usage, that says the same).
> 
>> Yeah, there are few DTS files which have codec as node name.
>> So, no, I'm not going to change the node name from tlv320aic3106.
> 
>    So you prefer following the bad examples to following the standard?

those bad examples are in the tree and they did went through the review
process (arch, DT and probably alsa). But it is interesting that we do not
have a single correct node name for audio codecs (probably for other types also).

> Well, "the Moor has done his duty, the Moor can go"...

Let's ask the DT maintainers what should be the correct approach and someone
should go through all the existing DT files and clean them up? People usually
start reading the code for examples before the standard...

-- 
Péter

Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec

[Peter Ujfalusi]

On 08/01/2014 04:34 PM, Peter Ujfalusi wrote:
> Hi,
> 
> On 08/01/2014 04:13 PM, Sergei Shtylyov wrote:
>> Hello.
>>
>> On 08/01/2014 05:02 PM, Peter Ujfalusi wrote:
>>
>>>>     I do. We should follow the standard consistently. Why not call the node
>>>> "sound-codec"?
>>
>>> Well, there is _zero_ cases when the audio codec node is named as
>>> "sound-codec" in linux-next but we have wmXXXX, tlvXXXX, twlXXXX, maxXXXX etc.
>>
>>    Which only means people don't read the standard (which is referred to on
>> http://www.devicetree.org/Device_Tree_Usage, that says the same).
>>
>>> Yeah, there are few DTS files which have codec as node name.
>>> So, no, I'm not going to change the node name from tlv320aic3106.
>>
>>    So you prefer following the bad examples to following the standard?
> 
> those bad examples are in the tree and they did went through the review
> process (arch, DT and probably alsa). But it is interesting that we do not
> have a single correct node name for audio codecs (probably for other types also).

I have thought about this over the weekend and I would keep the node name for
the codec as it is in the patch.
It is the common practice for audio and it also helps when reading the DT file
to quickly see the audio support on the board. We all use the 'sound' node
name for audio cards and when we use the name of the codec as node name we do
not need to look further in the dts file to see what is the codec in used (and
what/which cpu dai we are using). All this can be seen in the main sound
support node.

>> Well, "the Moor has done his duty, the Moor can go"...
> 
> Let's ask the DT maintainers what should be the correct approach and someone
> should go through all the existing DT files and clean them up? People usually
> start reading the code for examples before the standard...
> 


-- 
Péter

[PATCH 6/6] ARM: DTS: da850-evm: Enable audio via simple-card

[Peter Ujfalusi]

The audio on the board is using McASP <-> tlv320aic3106 codec and we have
LineIn and LineOut jacks.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
 arch/arm/boot/dts/da850-evm.dts | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
index b9ef2be0b145..031117a4a797 100644
--- a/arch/arm/boot/dts/da850-evm.dts
+++ b/arch/arm/boot/dts/da850-evm.dts
@@ -143,6 +143,33 @@
 		regulator-max-microvolt = <5000000>;
 		regulator-boot-on;
 	};
+
+	sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "DA850/OMAP-L138 EVM";
+		simple-audio-card,widgets =
+			"Line", "Line In",
+			"Line", "Line Out";
+		simple-audio-card,routing =
+			"LINE1L", "Line In",
+			"LINE1R", "Line In",
+			"Line Out", "LLOUT",
+			"Line Out", "RLOUT";
+		simple-audio-card,format = "dsp_b";
+		simple-audio-card,bitclock-master = <&link0_codec>;
+		simple-audio-card,frame-master = <&link0_codec>;
+		simple-audio-card,bitclock-inversion;
+
+		simple-audio-card,cpu {
+			sound-dai = <&mcasp0>;
+			system-clock-frequency = <24576000>;
+		};
+
+		link0_codec: simple-audio-card,codec {
+			sound-dai = <&tlv320aic3106>;
+			system-clock-frequency = <24576000>;
+		};
+	};
 };
 
 /include/ "tps6507x.dtsi"
-- 
2.0.2