The default value of #sound-dai-cells in r8a7778.dtsi is one, while
the /sound/simple-audio-card,cpu device node in r8a7778-bockw.dts uses a
phandle without any extra cells ("<&rcar_sound>"), causing:

    /sound/simple-audio-card,cpu: arguments longer than property
    asoc-simple-card sound: parse error -22
    asoc-simple-card: probe of sound failed with error -22

Override #sound-dai-cells to zero to fix this.

Signed-off-by: Geert Uytterhoeven <[email protected]>
---
The rcar_sound node is still disabled. So why is this needed?!?
---
 arch/arm/boot/dts/r8a7778-bockw.dts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/boot/dts/r8a7778-bockw.dts 
b/arch/arm/boot/dts/r8a7778-bockw.dts
index 3c03e6b8261e9348..158ad94fd4d187a7 100644
--- a/arch/arm/boot/dts/r8a7778-bockw.dts
+++ b/arch/arm/boot/dts/r8a7778-bockw.dts
@@ -172,6 +172,11 @@
        };
 };
 
+&rcar_sound {
+       /* Single DAI */
+       #sound-dai-cells = <0>;
+};
+
 &sdhi0 {
        pinctrl-0 = <&sdhi0_pins>, <&sdhi0_pup_pins>;
        pinctrl-names = "default";
-- 
1.9.1

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