On Wed, Oct 22, 2014 at 08:40:56AM +0800, Jianqun wrote:

 config SND_SOC_ROCKCHIP_I2S
 	tristate
+	depends on CLKDEV_LOOKUP && SND_SOC_ROCKCHIP
+	help
+	  Say Y or M if you want to add support for I2S driver for Rockchip
+	  I2S device.

You need to make this directlyuser selectable by adding some text after
the tristate as well as the rest.

+config SND_SOC_MAX98090
+	tristate "ASoC support max98090 device driver"
+	depends on I2C && GPIOLIB
+	select SND_SOC_ROCKCHIP_I2S
+	help
+	  Say Y or M here if you want to add support for Rockchio board using
+	  a max98090 codec.

This needs to modify the existing MAX98090 entry, not duplicate it
(probably as a separate patch).
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