arch/arm/boot/dts/at91sam9x5_usart3.dtsi

   1 /*
   2  * at91sam9x5_usart3.dtsi - Device Tree Include file for AT91SAM9x5 SoC with
   3  * 4 USART.
   4  *
   5  * Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
   6  *
   7  * Licensed under GPLv2.
   8  */
   9
  10 #include <dt-bindings/pinctrl/at91.h>
  11 #include <dt-bindings/interrupt-controller/irq.h>
  12
  13 / {
  14         aliases {
  15                 serial4 = &usart3;
  16         };
  17
  18         ahb {
  19                 apb {
  20                         pinctrl@fffff400 {
  21                                 usart3 {
  22                                         pinctrl_usart3: usart3-0 {
  23                                                 atmel,pins =
  24                                                         <AT91_PIOC 22 AT91_PERIPH_B AT91_PINCTRL_PULL_UP        /* PC22 periph B with pullup */
  25                                                          AT91_PIOC 23 AT91_PERIPH_B AT91_PINCTRL_NONE>;         /* PC23 periph B */
  26                                         };
  27
  28                                         pinctrl_usart3_rts: usart3_rts-0 {
  29                                                 atmel,pins =
  30                                                         <AT91_PIOC 24 AT91_PERIPH_B AT91_PINCTRL_NONE>;         /* PC24 periph B */
  31                                         };
  32
  33                                         pinctrl_usart3_cts: usart3_cts-0 {
  34                                                 atmel,pins =
  35                                                         <AT91_PIOC 25 AT91_PERIPH_B AT91_PINCTRL_NONE>;         /* PC25 periph B */
  36                                         };
  37
  38                                         pinctrl_usart3_sck: usart3_sck-0 {
  39                                                 atmel,pins =
  40                                                         <AT91_PIOC 26 AT91_PERIPH_B AT91_PINCTRL_NONE>;         /* PC26 periph B */
  41                                         };
  42                                 };
  43                         };
  44
  45                         pmc: pmc@fffffc00 {
  46                                 periphck {
  47                                         usart3_clk: usart3_clk {
  48                                                 #clock-cells = <0>;
  49                                                 reg = <8>;
  50                                         };
  51                                 };
  52                         };
  53
  54                         usart3: serial@f8028000 {
  55                                 compatible = "atmel,at91sam9260-usart";
  56                                 reg = <0xf8028000 0x200>;
  57                                 interrupts = <8 IRQ_TYPE_LEVEL_HIGH 5>;
  58                                 pinctrl-names = "default";
  59                                 pinctrl-0 = <&pinctrl_usart3>;
  60                                 dmas = <&dma1 1 AT91_DMA_CFG_PER_ID(14)>,
  61                                        <&dma1 1 (AT91_DMA_CFG_PER_ID(15) | AT91_DMA_CFG_FIFOCFG_ASAP)>;
  62                                 dma-names = "tx", "rx";
  63                                 clocks = <&usart3_clk>;
  64                                 clock-names = "usart";
  65                                 status = "disabled";
  66                         };
  67                 };
  68         };
  69 };