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Diffstat (limited to 'Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt')
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diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt deleted file mode 100644 index 12bbe9f22560..000000000000 --- a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.txt +++ /dev/null @@ -1,76 +0,0 @@ -* Synopsys DesignWare ABP UART - -Required properties: -- compatible : "snps,dw-apb-uart" -- reg : offset and length of the register set for the device. -- interrupts : should contain uart interrupt. - -Clock handling: -The clock rate of the input clock needs to be supplied by one of -- clock-frequency : the input clock frequency for the UART. -- clocks : phandle to the input clock - -The supplying peripheral clock can also be handled, needing a second property -- clock-names: tuple listing input clock names. - Required elements: "baudclk", "apb_pclk" - -Optional properties: -- snps,uart-16550-compatible : reflects the value of UART_16550_COMPATIBLE - configuration parameter. Define this if your UART does not implement the busy - functionality. -- resets : phandle to the parent reset controller. -- reg-shift : quantity to shift the register offsets by. If this property is - not present then the register offsets are not shifted. -- reg-io-width : the size (in bytes) of the IO accesses that should be - performed on the device. If this property is not present then single byte - accesses are used. -- dcd-override : Override the DCD modem status signal. This signal will always - be reported as active instead of being obtained from the modem status - register. Define this if your serial port does not use this pin. -- dsr-override : Override the DTS modem status signal. This signal will always - be reported as active instead of being obtained from the modem status - register. Define this if your serial port does not use this pin. -- cts-override : Override the CTS modem status signal. This signal will always - be reported as active instead of being obtained from the modem status - register. Define this if your serial port does not use this pin. -- ri-override : Override the RI modem status signal. This signal will always be - reported as inactive instead of being obtained from the modem status register. - Define this if your serial port does not use this pin. - -Example: - - uart@80230000 { - compatible = "snps,dw-apb-uart"; - reg = <0x80230000 0x100>; - clock-frequency = <3686400>; - interrupts = <10>; - reg-shift = <2>; - reg-io-width = <4>; - dcd-override; - dsr-override; - cts-override; - ri-override; - }; - -Example with one clock: - - uart@80230000 { - compatible = "snps,dw-apb-uart"; - reg = <0x80230000 0x100>; - clocks = <&baudclk>; - interrupts = <10>; - reg-shift = <2>; - reg-io-width = <4>; - }; - -Example with two clocks: - - uart@80230000 { - compatible = "snps,dw-apb-uart"; - reg = <0x80230000 0x100>; - clocks = <&baudclk>, <&apb_pclk>; - clock-names = "baudclk", "apb_pclk"; - interrupts = <10>; - reg-shift = <2>; - reg-io-width = <4>; - }; |