These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / sound / tas2552.txt

diff --git a/kernel/Documentation/devicetree/bindings/sound/tas2552.txt b/kernel/Documentation/devicetree/bindings/sound/tas2552.txt
index 55e2a0a..c49992c 100644 (file)
--- a/kernel/Documentation/devicetree/bindings/sound/tas2552.txt
+++ b/kernel/Documentation/devicetree/bindings/sound/tas2552.txt
@@ -14,6 +14,12 @@ Required properties:
 Optional properties:
        - enable-gpio - gpio pin to enable/disable the device
 
+tas2552 can receive it's reference clock via MCLK, BCLK, IVCLKIN pin or use the
+internal 1.8MHz. This CLKIN is used by the PLL. In addition to PLL, the PDM
+reference clock is also selectable: PLL, IVCLKIN, BCLK or MCLK.
+For system integration the dt-bindings/sound/tas2552.h header file provides
+defined values to selct and configure the PLL and PDM reference clocks.
+
 Example:
 
 tas2552: tas2552@41 {