Re: [PATCH 1/3] ASoC: simple-card: set cpu dai clk in hw_params

Hi Daniel

The simple-card driver currently accepts a clock node in the cpu dai
sub-node and only uses it as an alternative to the
'system-clock-frequency' property to get the current frequency.

This patch adds another use of the passed clock node. If mclk-fs is
specified, the clock will be set to the calculated rate (stream rate *
mclk_fs) in hw_params. This allows platforms to pass a tuneable clock
as phandle that will automatically be set to the right rates.

Signed-off-by: Daniel Mack <daniel@zonque.org>
---

(snip)

 	if (mclk_fs) {
 		mclk = params_rate(params) * mclk_fs;
+
+		if (dai_props->cpu_dai.clk)
+			clk_set_rate(dai_props->cpu_dai.clk, mclk);
+
 		ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 					     SND_SOC_CLOCK_IN);
 		if (ret && ret != -ENOTSUPP)

Having codec is nice balance ?

Best regards
---
Kuninori Morimoto