1 * Synopsys DesignWare ABP UART
4 - compatible : "snps,dw-apb-uart"
5 - reg : offset and length of the register set for the device.
6 - interrupts : should contain uart interrupt.
9 The clock rate of the input clock needs to be supplied by one of
10 - clock-frequency : the input clock frequency for the UART.
11 - clocks : phandle to the input clock
13 The supplying peripheral clock can also be handled, needing a second property
14 - clock-names: tuple listing input clock names.
15 Required elements: "baudclk", "apb_pclk"
18 - resets : phandle to the parent reset controller.
19 - reg-shift : quantity to shift the register offsets by. If this property is
20 not present then the register offsets are not shifted.
21 - reg-io-width : the size (in bytes) of the IO accesses that should be
22 performed on the device. If this property is not present then single byte
24 - dcd-override : Override the DCD modem status signal. This signal will always
25 be reported as active instead of being obtained from the modem status
26 register. Define this if your serial port does not use this pin.
27 - dsr-override : Override the DTS modem status signal. This signal will always
28 be reported as active instead of being obtained from the modem status
29 register. Define this if your serial port does not use this pin.
30 - cts-override : Override the CTS modem status signal. This signal will always
31 be reported as active instead of being obtained from the modem status
32 register. Define this if your serial port does not use this pin.
33 - ri-override : Override the RI modem status signal. This signal will always be
34 reported as inactive instead of being obtained from the modem status register.
35 Define this if your serial port does not use this pin.
40 compatible = "snps,dw-apb-uart";
41 reg = <0x80230000 0x100>;
42 clock-frequency = <3686400>;
52 Example with one clock:
55 compatible = "snps,dw-apb-uart";
56 reg = <0x80230000 0x100>;
63 Example with two clocks:
66 compatible = "snps,dw-apb-uart";
67 reg = <0x80230000 0x100>;
68 clocks = <&baudclk>, <&apb_pclk>;
69 clock-names = "baudclk", "apb_pclk";