Add a new rockchip,codec-names property, so that the driver can parse
the codecs by name.

Signed-off-by: Jeffy Chen <jeffy.c...@rock-chips.com>
---

Changes in v2:
Let rockchip,codec-names be a required property.

 Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git 
a/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt 
b/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt
index eac91db..05351df 100644
--- a/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt
+++ b/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt
@@ -5,6 +5,7 @@ Required properties:
 - rockchip,cpu: The phandle of the Rockchip I2S controller that's
   connected to the codecs
 - rockchip,codec: The phandle of the MAX98357A/RT5514/DA7219 codecs
+- rockchip,codec-names: The names of the MAX98357A/RT5514/DA7219 codecs
 
 Optional properties:
 - dmic-wakeup-delay-ms : specify delay time (ms) for DMIC ready.
@@ -18,5 +19,6 @@ sound {
        compatible = "rockchip,rk3399-gru-sound";
        rockchip,cpu = <&i2s0>;
        rockchip,codec = <&max98357a &rt5514 &da7219>;
+       rockchip,codec-names = "MAX98357A", "RT5514", "DA7219";
        dmic-wakeup-delay-ms = <20>;
 };
-- 
2.1.4


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