Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec
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 wm, tlv, twl, max 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 ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec
Hello.
On 01-08-2014 9:22, Peter Ujfalusi wrote:
The board uses aic3106 for audio.
Signed-off-by: Peter Ujfalusi peter.ujfal...@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 {
[...]
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
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 wm, tlv, twl, max 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 ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec
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 wm, tlv, twl, max 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 ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec
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 wm, tlv, twl, max 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 ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
Re: [PATCH 5/6] ARM: DTS: da850-evm: Add node for tlv320aic3106 codec
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.ujfal...@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 {
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
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