bindings/serial/atmel%2Cat91-usart.yaml

1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/serial/atmel,at91-usart.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11   - Richard Genoud <richard.genoud@bootlin.com>
16       - enum:
17           - atmel,at91rm9200-usart
18           - atmel,at91sam9260-usart
19       - items:
20           - const: atmel,at91rm9200-dbgu
21           - const: atmel,at91rm9200-usart
22       - items:
23           - const: atmel,at91sam9260-dbgu
24           - const: atmel,at91sam9260-usart
25       - items:
26           - enum:
27               - microchip,sam9x60-usart
28               - microchip,sam9x7-usart
29           - const: atmel,at91sam9260-usart
30       - items:
31           - const: microchip,sam9x60-dbgu
32           - const: microchip,sam9x60-usart
33           - const: atmel,at91sam9260-dbgu
34           - const: atmel,at91sam9260-usart
35       - items:
36           - const: microchip,sam9x7-dbgu
37           - const: atmel,at91sam9260-dbgu
38           - const: microchip,sam9x7-usart
39           - const: atmel,at91sam9260-usart
47   clock-names:
50       - const: usart
51       - const: gclk
56       - description: USART Peripheral Clock
57       - description: USART Generic Clock
61       - description: TX DMA Channel
62       - description: RX DMA Channel
64   dma-names:
66       - const: tx
67       - const: rx
69   atmel,usart-mode:
72       Must be either <AT91_USART_MODE_SPI> for SPI or
73       <AT91_USART_MODE_SERIAL> for USART (found in dt-bindings/mfd/at91-usart.h).
76   atmel,use-dma-rx:
80   atmel,use-dma-tx:
84   atmel,fifo-size:
92   - compatible
93   - reg
94   - interrupts
95   - clock-names
96   - clocks
97   - atmel,usart-mode
100   - if:
102         atmel,usart-mode:
106         - $ref: /schemas/spi/spi-controller.yaml#
109         atmel,use-dma-rx: false
111         atmel,use-dma-tx: false
113         atmel,fifo-size: false
115         "#size-cells":
118         "#address-cells":
122         - "#size-cells"
123         - "#address-cells"
127         - $ref: /schemas/serial/serial.yaml#
128         - $ref: /schemas/serial/rs485.yaml#
133   - |
134     #include <dt-bindings/gpio/gpio.h>
135     #include <dt-bindings/interrupt-controller/irq.h>
136     #include <dt-bindings/mfd/at91-usart.h>
137     #include <dt-bindings/dma/at91.h>
141         compatible = "atmel,at91sam9260-usart";
143         atmel,usart-mode = <AT91_USART_MODE_SERIAL>;
146         clock-names = "usart";
147         atmel,use-dma-rx;
148         atmel,use-dma-tx;
149         rts-gpios = <&pioD 15 GPIO_ACTIVE_LOW>;
150         cts-gpios = <&pioD 16 GPIO_ACTIVE_LOW>;
151         dtr-gpios = <&pioD 17 GPIO_ACTIVE_LOW>;
152         dsr-gpios = <&pioD 18 GPIO_ACTIVE_LOW>;
153         dcd-gpios = <&pioD 20 GPIO_ACTIVE_LOW>;
154         rng-gpios = <&pioD 19 GPIO_ACTIVE_LOW>;
157   - |
158     #include <dt-bindings/gpio/gpio.h>
159     #include <dt-bindings/interrupt-controller/irq.h>
160     #include <dt-bindings/mfd/at91-usart.h>
161     #include <dt-bindings/dma/at91.h>
165         compatible = "atmel,at91sam9260-usart";
167         atmel,usart-mode = <AT91_USART_MODE_SERIAL>;
170         clock-names = "usart";
171         atmel,use-dma-rx;
172         atmel,use-dma-tx;
175         dma-names = "tx", "rx";
176         atmel,fifo-size = <32>;
179   - |
180     #include <dt-bindings/gpio/gpio.h>
181     #include <dt-bindings/interrupt-controller/irq.h>
182     #include <dt-bindings/mfd/at91-usart.h>
183     #include <dt-bindings/dma/at91.h>
185     /* SPI mode */
186     spi0: spi@f001c000 {
187         compatible = "atmel,at91sam9260-usart";
189         #address-cells = <1>;
190         #size-cells = <0>;
191         atmel,usart-mode = <AT91_USART_MODE_SPI>;
194         clock-names = "usart";
197         dma-names = "tx", "rx";
198         cs-gpios = <&pioB 3 GPIO_ACTIVE_HIGH>;