| Message ID | 20180511103822.31698-5-radu.pirea@microchip.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, May 11, 2018 at 01:38:20PM +0300, Radu Pirea wrote: > These are bindings for at91-usart IP in spi spi mode. There is no support for s/spi spi/SPI/ > internal chip select. Only kind of chip selects available are gpio chip GPIO > selects. > > Signed-off-by: Radu Pirea <radu.pirea@microchip.com> > --- > .../bindings/spi/microchip,at91-usart-spi.txt | 28 +++++++++++++++++++ > 1 file changed, 28 insertions(+) > create mode 100644 Documentation/devicetree/bindings/spi/microchip,at91-usart-spi.txt > > diff --git a/Documentation/devicetree/bindings/spi/microchip,at91-usart-spi.txt b/Documentation/devicetree/bindings/spi/microchip,at91-usart-spi.txt > new file mode 100644 > index 000000000000..b68a3bec4121 > --- /dev/null > +++ b/Documentation/devicetree/bindings/spi/microchip,at91-usart-spi.txt So now we have 2 copies of the same thing that varies by 2 properties? Please make this one doc. > @@ -0,0 +1,28 @@ > +* Universal Synchronous Asynchronous Receiver/Transmitter (USART) in SPI mode > + > +Required properties: > +- #size-cells : Must be <0> > +- #address-cells : Must be <1> > +- compatible: Should be "atmel,at91rm9200-usart" or "atmel,at91sam9260-usart" > +- reg: Should contain registers location and length > +- interrupts: Should contain interrupt > +- clocks: phandles to input clocks. > +- clock-names: tuple listing input clock names. > + Required elements: "usart" > +- cs-gpios: chipselects (internal cs not supported) > +- at91,usart-mode: AT91_USART_MODE_SPI (found in dt-bindings/mfd/at91-usart.h) at91 is not a vendor. > + > +Example: > + #include <dt-bindings/mfd/at91-usart.h> > + > + spi0: spi@f001c000 { > + #address-cells = <1>; > + #size-cells = <0>; > + compatible = "atmel,at91rm9200-usart", "atmel,at91sam9260-usart"; > + at91,usart-mode = <AT91_USART_MODE_SPI>; > + reg = <0xf001c000 0x100>; > + interrupts = <12 IRQ_TYPE_LEVEL_HIGH>; > + clocks = <&usart0_clk>; > + clock-names = "usart"; > + cs-gpios = <&pioB 3 0>; > + }; > -- > 2.17.0 >
diff --git a/Documentation/devicetree/bindings/spi/microchip,at91-usart-spi.txt b/Documentation/devicetree/bindings/spi/microchip,at91-usart-spi.txt new file mode 100644 index 000000000000..b68a3bec4121 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/microchip,at91-usart-spi.txt @@ -0,0 +1,28 @@ +* Universal Synchronous Asynchronous Receiver/Transmitter (USART) in SPI mode + +Required properties: +- #size-cells : Must be <0> +- #address-cells : Must be <1> +- compatible: Should be "atmel,at91rm9200-usart" or "atmel,at91sam9260-usart" +- reg: Should contain registers location and length +- interrupts: Should contain interrupt +- clocks: phandles to input clocks. +- clock-names: tuple listing input clock names. + Required elements: "usart" +- cs-gpios: chipselects (internal cs not supported) +- at91,usart-mode: AT91_USART_MODE_SPI (found in dt-bindings/mfd/at91-usart.h) + +Example: + #include <dt-bindings/mfd/at91-usart.h> + + spi0: spi@f001c000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "atmel,at91rm9200-usart", "atmel,at91sam9260-usart"; + at91,usart-mode = <AT91_USART_MODE_SPI>; + reg = <0xf001c000 0x100>; + interrupts = <12 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&usart0_clk>; + clock-names = "usart"; + cs-gpios = <&pioB 3 0>; + };
These are bindings for at91-usart IP in spi spi mode. There is no support for internal chip select. Only kind of chip selects available are gpio chip selects. Signed-off-by: Radu Pirea <radu.pirea@microchip.com> --- .../bindings/spi/microchip,at91-usart-spi.txt | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/microchip,at91-usart-spi.txt