Question: Does devicetree capable of describing pinmux?

[Dennis.Yxun]

Hi Fork:
   I would like to know whether device tree capable of describing pinmux?
   Say, one pin (PIN_10) which can be configured as I2C_SDL, SPI_CLK,
GPIO23,
How can I describe in device tree?
   Or, the I2C controller 1 can be configured to use PIN(23, 24) or
PIN(45,46),
What should I should do with device tree?

   Thanks

Dennis
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