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* NXP (Philips) SCC+++(SCN+++) serial driver
Required properties:
- compatible: Should be "nxp,<ictype>". The supported ICs include sc2681,
sc2691, sc2692, sc2891, sc2892, sc28202, sc68681 and sc68692.
- reg: Address and length of the register set for the device.
- interrupts: Should contain the interrupt number. If omitted,
polling mode will be used instead, so "poll-interval" property should
be populated in this case.
Optional properties:
- clocks: Phandle to input clock. If omitted, default IC frequency will be
used instead.
- poll-interval: Poll interval time in nanoseconds.
- vcc-supply: The regulator supplying the VCC to drive the chip.
- nxp,sccnxp-io-cfg: Array contains values for the emulated modem signals.
The number of values depends on the UART-number in the selected chip.
Each value should be composed according to the following rules:
(LINE1 << SIGNAL1) | ... | (LINEX << SIGNALX), where:
LINE - VALUE:
OP0 - 1
OP1 - 2
OP2 - 3
OP3 - 4
OP4 - 5
OP5 - 6
OP6 - 7
OP7 - 8
IP0 - 9
IP1 - 10
IP2 - 11
IP3 - 12
IP4 - 13
IP5 - 14
IP6 - 15
SIGNAL - VALUE:
DTR - 0
RTS - 4
DSR - 8
CTS - 12
DCD - 16
RNG - 20
DIR - 24
Example (Dual UART with direction control on OP0 & OP1):
sc2892@10100000 {
compatible = "nxp,sc2892";
reg = <0x10100000 0x10>;
poll-interval = <10000>;
clocks = <&sc2892_clk>;
vcc-supply = <&sc2892_reg>;
nxp,sccnxp-io-cfg = <0x01000000 0x02000000>;
};
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