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lib: utils: serial: Add FDT driver for Renesas SCIF

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Add FDT driver for Renesas SCIF.

    dts example:

    soc: soc {
          ....
            scif0: serial@1004b800 {
                    compatible = "renesas,scif-r9a07g043",
                                 "renesas,scif-r9a07g044";
                    reg = <0 0x1004b800 0 0x400>;
                    interrupts = <412 IRQ_TYPE_LEVEL_HIGH>,
                                 <414 IRQ_TYPE_LEVEL_HIGH>,
                                 <415 IRQ_TYPE_LEVEL_HIGH>,
                                 <413 IRQ_TYPE_LEVEL_HIGH>,
                                 <416 IRQ_TYPE_LEVEL_HIGH>,
                                 <416 IRQ_TYPE_LEVEL_HIGH>;
                    interrupt-names = "eri", "rxi", "txi",
                                      "bri", "dri", "tei";
                    clocks = <&cpg CPG_MOD R9A07G043_SCIF0_CLK_PCK>;
                    clock-names = "fck";
                    power-domains = <&cpg>;
                    resets = <&cpg R9A07G043_SCIF0_RST_SYSTEM_N>;
                    status = "disabled";
            };
          ....
    };

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Lad Prabhakar
2022-12-10 10:30:08 +00:00
committed by Anup Patel
parent 64e8b9f72e
commit 0021b43737
5 changed files with 53 additions and 0 deletions
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11
lib/utils/fdt/fdt_helper.c
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@@ -23,6 +23,9 @@
#define DEFAULT_UART_REG_IO_WIDTH 1
#define DEFAULT_UART_REG_OFFSET 0
#define DEFAULT_RENESAS_SCIF_FREQ 100000000
#define DEFAULT_RENESAS_SCIF_BAUD 115200
#define DEFAULT_SIFIVE_UART_FREQ 0
#define DEFAULT_SIFIVE_UART_BAUD 115200
@@ -355,6 +358,14 @@ int fdt_parse_gaisler_uart_node(void *fdt, int nodeoffset,
DEFAULT_UART_BAUD);
}
int fdt_parse_renesas_scif_node(void *fdt, int nodeoffset,
struct platform_uart_data *uart)
{
return fdt_parse_uart_node_common(fdt, nodeoffset, uart,
DEFAULT_RENESAS_SCIF_FREQ,
DEFAULT_RENESAS_SCIF_BAUD);
}
int fdt_parse_shakti_uart_node(void *fdt, int nodeoffset,
struct platform_uart_data *uart)
{