[alsa-devel] [PATCH] ASoC: cs42888: Add codec driver support

Mark Brown broonie at kernel.org
Tue Feb 25 01:00:27 CET 2014

On Tue, Feb 25, 2014 at 12:06:49AM +0800, Nicolin Chen wrote:
> On Mon, Feb 24, 2014 at 03:52:24PM +0000, Austin, Brian wrote:

> Wait...Regarding this clock part, I just forgot the reason I put the code:

> 385         cs42888->clk = devm_clk_get(&i2c->dev, "mclk");
> 386         if (IS_ERR(cs42888->clk))
> 387                 dev_warn(&i2c->dev, "failed to get the clock: %ld\n",
> 388                                 PTR_ERR(cs42888->clk));

> was because the MCLK might be provided from SoC (DAI master) so it could
> be totally controlled by CPU DAI driver, ESAI for example has its own
> dividers to derive the HCKT clock (MCLK for Tx) from ahb clock in SoC
> clock tree, in which case we might not easily pass a valid clock phandle
> via DT. (RFC to this thought.)

We should be getting those clocks visible in the clock API rather than
doing this.
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