| Message ID | 20180525171941.26766-3-radu.pirea@microchip.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, May 25, 2018 at 08:19:37PM +0300, Radu Pirea wrote: > This patch moves the bindings for serial from serial/atmel-usart.txt to > mfd/atmel-usart.txt and adds bindings for USART in SPI mode. > > Signed-off-by: Radu Pirea <radu.pirea@microchip.com> > --- > .../bindings/{serial => mfd}/atmel-usart.txt | 25 +++++++++++++++++-- > 1 file changed, 23 insertions(+), 2 deletions(-) > rename Documentation/devicetree/bindings/{serial => mfd}/atmel-usart.txt (76%) Reviewed-by: Rob Herring <robh@kernel.org> -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Fri, 25 May 2018, Radu Pirea wrote: > This patch moves the bindings for serial from serial/atmel-usart.txt to > mfd/atmel-usart.txt and adds bindings for USART in SPI mode. > > Signed-off-by: Radu Pirea <radu.pirea@microchip.com> > --- > .../bindings/{serial => mfd}/atmel-usart.txt | 25 +++++++++++++++++-- > 1 file changed, 23 insertions(+), 2 deletions(-) > rename Documentation/devicetree/bindings/{serial => mfd}/atmel-usart.txt (76%) For my own reference: Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
diff --git a/Documentation/devicetree/bindings/serial/atmel-usart.txt b/Documentation/devicetree/bindings/mfd/atmel-usart.txt similarity index 76% rename from Documentation/devicetree/bindings/serial/atmel-usart.txt rename to Documentation/devicetree/bindings/mfd/atmel-usart.txt index 7c0d6b2f53e4..3b9e18642c3b 100644 --- a/Documentation/devicetree/bindings/serial/atmel-usart.txt +++ b/Documentation/devicetree/bindings/mfd/atmel-usart.txt @@ -1,6 +1,6 @@ * Atmel Universal Synchronous Asynchronous Receiver/Transmitter (USART) -Required properties: +Required properties for USART: - compatible: Should be "atmel,<chip>-usart" or "atmel,<chip>-dbgu" The compatible <chip> indicated will be the first SoC to support an additional mode or an USART new feature. @@ -11,7 +11,13 @@ Required properties: Required elements: "usart" - clocks: phandles to input clocks. -Optional properties: +Required properties for USART in SPI mode: +- #size-cells : Must be <0> +- #address-cells : Must be <1> +- cs-gpios: chipselects (internal cs not supported) +- atmel,usart-mode : Must be <USART_MODE_SPI> (found in dt-bindings/mfd/at91-usart.h) + +Optional properties in serial mode: - atmel,use-dma-rx: use of PDC or DMA for receiving data - atmel,use-dma-tx: use of PDC or DMA for transmitting data - {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD line respectively. @@ -62,3 +68,18 @@ Example: dma-names = "tx", "rx"; atmel,fifo-size = <32>; }; + +- SPI mode: + #include <dt-bindings/mfd/at91-usart.h> + + spi0: spi@f001c000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "atmel,at91rm9200-usart", "atmel,at91sam9260-usart"; + atmel,usart-mode = <USART_MODE_SPI>; + reg = <0xf001c000 0x100>; + interrupts = <12 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&usart0_clk>; + clock-names = "usart"; + cs-gpios = <&pioB 3 0>; + };
This patch moves the bindings for serial from serial/atmel-usart.txt to mfd/atmel-usart.txt and adds bindings for USART in SPI mode. Signed-off-by: Radu Pirea <radu.pirea@microchip.com> --- .../bindings/{serial => mfd}/atmel-usart.txt | 25 +++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) rename Documentation/devicetree/bindings/{serial => mfd}/atmel-usart.txt (76%)