On 2020-02-12 04:59, Srinivas Kandagatla wrote:
On 12/02/2020 01:52, Adam Serbinski wrote:
This patch adds documentation of bindings required for PCM ports on
AFE.
Signed-off-by: Adam Serbinski <adam@xxxxxxxxxxxxx>
CC: Andy Gross <agross@xxxxxxxxxx>
CC: Mark Rutland <mark.rutland@xxxxxxx>
CC: Liam Girdwood <lgirdwood@xxxxxxxxx>
CC: Patrick Lai <plai@xxxxxxxxxxxxxx>
CC: Banajit Goswami <bgoswami@xxxxxxxxxxxxxx>
CC: Jaroslav Kysela <perex@xxxxxxxx>
CC: Takashi Iwai <tiwai@xxxxxxxx>
CC: alsa-devel@xxxxxxxxxxxxxxxx
CC: linux-arm-msm@xxxxxxxxxxxxxxx
CC: devicetree@xxxxxxxxxxxxxxx
CC: linux-kernel@xxxxxxxxxxxxxxx
---
.../devicetree/bindings/sound/qcom,q6afe.txt | 42
+++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/qcom,q6afe.txt
b/Documentation/devicetree/bindings/sound/qcom,q6afe.txt
index d74888b9f1bb..6b1b17d31a2a 100644
--- a/Documentation/devicetree/bindings/sound/qcom,q6afe.txt
+++ b/Documentation/devicetree/bindings/sound/qcom,q6afe.txt
@@ -51,6 +51,24 @@ configuration of each dai. Must contain the
following properties.
Definition: Must be list of serial data lines used by this dai.
should be one or more of the 0-3 sd lines.
+ - qcom,pcm-quantype
+ Usage: required for pcm interface
+ Value type: <u32>
+ Definition: PCM quantization type
+ 0 - ALAW, no padding
+ 1 - MULAW, no padding
+ 2 - Linear, no padding
+ 3 - ALAW, padding
+ 4 - MULAW, padding
+ 5 - Linear, padding
+
+ - qcom,pcm-slot-mapping
+ Usage: required for pcm interface
Are these not specific to 8k and 16k mode ?
We should probably list values for both modes here.
No, this is just the offset that the audio sample is placed in with
respect to a maximum of 4 slots, 16 bits wide, beginning with the sync
pulse.
When switching between 8 and 16k sample rate, it is just the sync pulse
rate that is changed. The audio sample will be delivered in the same
slot, just at a different frequency.
+ Value type: <prop-encoded-array>
+ Definition: Slot mapping for audio channels. Array size is the
number
+ of slots, minimum 1, maximum 4. The value is 0 for no mapping
+ to the slot, or the channel number from 1 to 32.
+
- qcom,tdm-sync-mode:
Usage: required for tdm interface
Value type: <prop-encoded-array>
@@ -174,5 +192,29 @@ q6afe@4 {
reg = <23>;
qcom,sd-lines = <1>;
};
+
+ pri-pcm-rx@105 {
+ reg = <105>;
+ qcom,pcm-quantype = <2>;
+ qcom,pcm-slot-mapping = <1>;
+ };
+
+ pri-pcm-tx@106 {
+ reg = <106>;
+ qcom,pcm-quantype = <2>;
+ qcom,pcm-slot-mapping = <1>;
+ };
+
+ quat-pcm-rx@111 {
+ reg = <111>;
+ qcom,pcm-quantype = <5>;
+ qcom,pcm-slot-mapping = <0 0 1>;
+ };
+
+ quat-pcm-tx@112 {
+ reg = <112>;
+ qcom,pcm-quantype = <5>;
+ qcom,pcm-slot-mapping = <0 0 1>;
+ };
};
};
