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arm64: renesas: salvator-x: use CS2000 as AUDIO_CLK_B 

CS2000 needs AUDIO_CLKOUT as master clock which is generated
by Renesas sound, and Renesas sound needs CS2000 as ADUIO_CLK_B.
Because of this relationship, it will be dead-lock when driver probe.

cs2000: clk_multiplier@4f {
        ...
        clocks = <&rcar_sound 0>, <&x12_clk>;
        ...
};

&rcar_sound {
        ...
        assigned-clocks = <&cs2000>;
        ...
};

This patch is using dummy audio_clkout to avoid this issue.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Kuninori Morimoto 2015-12-01 05:36:34 +00:00 committed by Simon Horman
parent 40fbe14b54
commit 8a8f181d2c
1 changed files with 38 additions and 0 deletions
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38
arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
View File

@ -61,6 +61,16 @@
clock-frequency = <24576000>;
};
audio_clkout: audio_clkout {
/*
* This is same as <&rcar_sound 0>
* but needed to avoid cs2000/rcar_sound probe dead-lock
*/
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <11289600>;
};
rsnd_ak4613: sound {
compatible = "simple-audio-card";
@ -151,6 +161,17 @@
asahi-kasei,out5-single-end;
asahi-kasei,out6-single-end;
};
cs2000: clk_multiplier@4f {
#clock-cells = <0>;
compatible = "cirrus,cs2000-cp";
reg = <0x4f>;
clocks = <&audio_clkout>, <&x12_clk>;
clock-names = "clk_in", "ref_clk";
assigned-clocks = <&cs2000>;
assigned-clock-rates = <24576000>; /* 1/1 divide */
};
};
&rcar_sound {
@ -166,6 +187,23 @@
status = "okay";
/* update <audio_clk_b> to <cs2000> */
clocks = <&cpg CPG_MOD 1005>,
<&cpg CPG_MOD 1006>, <&cpg CPG_MOD 1007>,
<&cpg CPG_MOD 1008>, <&cpg CPG_MOD 1009>,
<&cpg CPG_MOD 1010>, <&cpg CPG_MOD 1011>,
<&cpg CPG_MOD 1012>, <&cpg CPG_MOD 1013>,
<&cpg CPG_MOD 1014>, <&cpg CPG_MOD 1015>,
<&cpg CPG_MOD 1022>, <&cpg CPG_MOD 1023>,
<&cpg CPG_MOD 1024>, <&cpg CPG_MOD 1025>,
<&cpg CPG_MOD 1026>, <&cpg CPG_MOD 1027>,
<&cpg CPG_MOD 1028>, <&cpg CPG_MOD 1029>,
<&cpg CPG_MOD 1030>, <&cpg CPG_MOD 1031>,
<&cpg CPG_MOD 1019>, <&cpg CPG_MOD 1018>,
<&audio_clk_a>, <&cs2000>,
<&audio_clk_c>,
<&cpg CPG_CORE R8A7795_CLK_S0D4>;
rcar_sound,dai {
dai0 {
playback = <&ssi0 &src0 &dvc0>;