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ARM: dts: rockchip: Assigned the i2s sclk from i2s_frac for rk3036

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As the HDMI-audio/codec will cause the hang on bootup, the root
cause that kylin get the invalid master clock from i2s.

$cat/sys/kernel/debug/clk/clk_summary
..
i2s_pre     0 0 0 0 0
    sclk_i2s       0 0 0 0 0
        i2s_clkout     0 0 0 0 0

Since i2s clock selects io input clock by default, but the hardware
didn't supply the clock.

This patch will fix the sclk_i2s's parent on i2s_frac.

As following:
$cat/sys/kernel/debug/clk/clk_summary
..
    i2s_src     1 1 594000000 0 0
        i2s_frac    1 1 22579200 0 0
            i2s_pre     2 2 22579200 0 0
                sclk_i2s 1 1 22579200 0 0

As far, the audio can work with aplay/record on kylin.dts

Says:
(aplay /dev/urandom)

/* recording */
arecord -f cd -d 10 /tmp/audio.wav
/* playback */
aplay /tmp/audio.wav

Change-Id: I73534a0d763eb02fb55e000ce068d9d604bf20ed
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
This commit is contained in:
Caesar Wang
2017-11-09 17:36:37 +08:00
committed by Tao Huang
parent 587d28e0f5
commit 7961e4557b
1 changed files with 2 additions and 0 deletions
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2
arch/arm/boot/dts/rk3036.dtsi
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@@ -409,6 +409,8 @@
interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
clock-names = "i2s_clk", "i2s_hclk";
clocks = <&cru SCLK_I2S>, <&cru HCLK_I2S>;
assigned-clocks = <&cru SCLK_I2S_PRE>;
assigned-clock-parents = <&cru SCLK_I2S_FRAC>;
dmas = <&pdma 0>, <&pdma 1>;
dma-names = "tx", "rx";
pinctrl-names = "default";