mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 01:54:09 +08:00
dd4f25a3ed
This patch adds usart dma definitions to both dtsi for sam9x5 chips. Without usage of dma it's unable to catch all bytes on usart receiver. Signed-off-by: Jiri Prchal <jiri.prchal@aksignal.cz> Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
70 lines
1.6 KiB
Plaintext
70 lines
1.6 KiB
Plaintext
/*
|
|
* at91sam9x5_usart3.dtsi - Device Tree Include file for AT91SAM9x5 SoC with
|
|
* 4 USART.
|
|
*
|
|
* Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
|
|
*
|
|
* Licensed under GPLv2.
|
|
*/
|
|
|
|
#include <dt-bindings/pinctrl/at91.h>
|
|
#include <dt-bindings/interrupt-controller/irq.h>
|
|
|
|
/ {
|
|
aliases {
|
|
serial4 = &usart3;
|
|
};
|
|
|
|
ahb {
|
|
apb {
|
|
pinctrl@fffff400 {
|
|
usart3 {
|
|
pinctrl_usart3: usart3-0 {
|
|
atmel,pins =
|
|
<AT91_PIOC 22 AT91_PERIPH_B AT91_PINCTRL_PULL_UP /* PC22 periph B with pullup */
|
|
AT91_PIOC 23 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PC23 periph B */
|
|
};
|
|
|
|
pinctrl_usart3_rts: usart3_rts-0 {
|
|
atmel,pins =
|
|
<AT91_PIOC 24 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PC24 periph B */
|
|
};
|
|
|
|
pinctrl_usart3_cts: usart3_cts-0 {
|
|
atmel,pins =
|
|
<AT91_PIOC 25 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PC25 periph B */
|
|
};
|
|
|
|
pinctrl_usart3_sck: usart3_sck-0 {
|
|
atmel,pins =
|
|
<AT91_PIOC 26 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PC26 periph B */
|
|
};
|
|
};
|
|
};
|
|
|
|
pmc: pmc@fffffc00 {
|
|
periphck {
|
|
usart3_clk: usart3_clk {
|
|
#clock-cells = <0>;
|
|
reg = <8>;
|
|
};
|
|
};
|
|
};
|
|
|
|
usart3: serial@f8028000 {
|
|
compatible = "atmel,at91sam9260-usart";
|
|
reg = <0xf8028000 0x200>;
|
|
interrupts = <8 IRQ_TYPE_LEVEL_HIGH 5>;
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&pinctrl_usart3>;
|
|
dmas = <&dma1 1 AT91_DMA_CFG_PER_ID(14)>,
|
|
<&dma1 1 (AT91_DMA_CFG_PER_ID(15) | AT91_DMA_CFG_FIFOCFG_ASAP)>;
|
|
dma-names = "tx", "rx";
|
|
clocks = <&usart3_clk>;
|
|
clock-names = "usart";
|
|
status = "disabled";
|
|
};
|
|
};
|
|
};
|
|
};
|