Kernel-3.10.0-957.el7_primecell

• ARM Primecell Peripherals

ARM, Ltd. Primecell peripherals have a standard id register that can be used to
identify the peripheral type, vendor, and revision. This value can be used for
driver matching.

Required properties:

• compatible : should be a specific name for the peripheral and

           "arm,primecell".  The specific name will match the ARM
           engineering name for the logic block in the form: "arm,pl???"
  

Optional properties:

• arm,primecell-periphid : Value to override the h/w value with
• clocks : From common clock binding. First clock is phandle to clock for apb
  pclk. Additional clocks are optional and specific to those peripherals.
• clock-names : From common clock binding. Shall be “apb_pclk” for first clock.
• dmas : From common DMA binding. If present, refers to one or more dma channels.
• dma-names : From common DMA binding, needs to match the ‘dmas’ property.

          Devices with exactly one receive and transmit channel shall name
          these "rx" and "tx", respectively.
  

• pinctrl- : Pinctrl states as described in bindings/pinctrl/pinctrl-bindings.txt
• pinctrl-names : Names corresponding to the numbered pinctrl states
• interrupts : one or more interrupt specifiers
• interrupt-names : names corresponding to the interrupts properties

Example:

serial@fff36000 {
compatible = “arm,pl011”, “arm,primecell”;
arm,primecell-periphid = <0x00341011>;

clocks = <&pclk>;
clock-names = "apb_pclk";

dmas = <&dma-controller 4>, <&dma-controller 5>;
dma-names = "rx", "tx";    

pinctrl-0 = <&uart0_default_mux>, <&uart0_default_mode>;
pinctrl-1 = <&uart0_sleep_mode>;
pinctrl-names = "default","sleep";

interrupts = <0 11 0x4>;

};