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* Renesas SH-Mobile Serial Communication Interface
Required properties:
- compatible : Should be "renesas,sci-<port type>-uart", where <port type> may be
SCI, SCIF, IRDA, SCIFA or SCIFB.
- reg : Address and length of the register set for the device
- interrupts : Should contain the following IRQs: ERI, RXI, TXI and BRI.
- cell-index : The device id.
- renesas,scscr : Should contain a bitfield used by the Serial Control Register.
b7 = SCSCR_TIE
b6 = SCSCR_RIE
b5 = SCSCR_TE
b4 = SCSCR_RE
b3 = SCSCR_REIE
b2 = SCSCR_TOIE
b1 = SCSCR_CKE1
b0 = SCSCR_CKE0
- renesas,scbrr-algo-id : Algorithm ID for the Bit Rate Register
1 = SCBRR_ALGO_1 ((clk + 16 * bps) / (16 * bps) - 1)
2 = SCBRR_ALGO_2 ((clk + 16 * bps) / (32 * bps) - 1)
3 = SCBRR_ALGO_3 (((clk * 2) + 16 * bps) / (16 * bps) - 1)
4 = SCBRR_ALGO_4 (((clk * 2) + 16 * bps) / (32 * bps) - 1)
5 = SCBRR_ALGO_5 (((clk * 1000 / 32) / bps) - 1)
Optional properties:
- renesas,autoconf : Set if device is capable of auto configuration
- renesas,regtype : Overwrite the register layout. In most cases you can rely
on auto-probing (omit this property or set to 0) but some legacy devices
use a non-default register layout. Possible layouts are
0 = SCIx_PROBE_REGTYPE (default)
1 = SCIx_SCI_REGTYPE
2 = SCIx_IRDA_REGTYPE
3 = SCIx_SCIFA_REGTYPE
4 = SCIx_SCIFB_REGTYPE
5 = SCIx_SH2_SCIF_FIFODATA_REGTYPE
6 = SCIx_SH3_SCIF_REGTYPE
7 = SCIx_SH4_SCIF_REGTYPE
8 = SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE
9 = SCIx_SH4_SCIF_FIFODATA_REGTYPE
10 = SCIx_SH7705_SCIF_REGTYPE
Example:
sci@0xe6c50000 {
compatible = "renesas,sci-SCIFA-uart";
interrupt-parent = <&intca>;
reg = <0xe6c50000 0x100>;
interrupts = <0x0c20>, <0x0c20>, <0x0c20>, <0x0c20>;
cell-index = <1>;
renesas,scscr = <0x30>;
renesas,scbrr-algo-id = <4>;
renesas,autoconf;
};
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