diff options
author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2022-12-10 13:30:08 +0300 |
---|---|---|
committer | Anup Patel <anup@brainfault.org> | 2022-12-12 16:20:35 +0300 |
commit | 0021b437377b4ea95f567f91fbf506c0b0b9e227 (patch) | |
tree | 780d5d5e212c9ff77297f57efd7c428a8ba74478 | |
parent | 64e8b9f72e986aba25f7cb41218b1a1088042ae3 (diff) | |
download | opensbi-0021b437377b4ea95f567f91fbf506c0b0b9e227.tar.xz |
lib: utils: serial: Add FDT driver for Renesas SCIF
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>
-rw-r--r-- | include/sbi_utils/fdt/fdt_helper.h | 3 | ||||
-rw-r--r-- | lib/utils/fdt/fdt_helper.c | 11 | ||||
-rw-r--r-- | lib/utils/serial/Kconfig | 5 | ||||
-rw-r--r-- | lib/utils/serial/fdt_serial_renesas_scif.c | 31 | ||||
-rw-r--r-- | lib/utils/serial/objects.mk | 3 |
5 files changed, 53 insertions, 0 deletions
diff --git a/include/sbi_utils/fdt/fdt_helper.h b/include/sbi_utils/fdt/fdt_helper.h index c39f77a..09f3095 100644 --- a/include/sbi_utils/fdt/fdt_helper.h +++ b/include/sbi_utils/fdt/fdt_helper.h @@ -59,6 +59,9 @@ int fdt_parse_timebase_frequency(void *fdt, unsigned long *freq); int fdt_parse_gaisler_uart_node(void *fdt, int nodeoffset, struct platform_uart_data *uart); +int fdt_parse_renesas_scif_node(void *fdt, int nodeoffset, + struct platform_uart_data *uart); + int fdt_parse_shakti_uart_node(void *fdt, int nodeoffset, struct platform_uart_data *uart); diff --git a/lib/utils/fdt/fdt_helper.c b/lib/utils/fdt/fdt_helper.c index d4b38dc..48bc2fe 100644 --- a/lib/utils/fdt/fdt_helper.c +++ b/lib/utils/fdt/fdt_helper.c @@ -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) { diff --git a/lib/utils/serial/Kconfig b/lib/utils/serial/Kconfig index f6ed803..e3589ca 100644 --- a/lib/utils/serial/Kconfig +++ b/lib/utils/serial/Kconfig @@ -24,6 +24,11 @@ config FDT_SERIAL_HTIF select SYS_HTIF default n +config FDT_SERIAL_RENESAS_SCIF + bool "Renesas SCIF FDT driver" + select SERIAL_RENESAS_SCIF + default n + config FDT_SERIAL_SHAKTI bool "Shakti UART FDT driver" select SERIAL_SHAKTI diff --git a/lib/utils/serial/fdt_serial_renesas_scif.c b/lib/utils/serial/fdt_serial_renesas_scif.c new file mode 100644 index 0000000..c331ca1 --- /dev/null +++ b/lib/utils/serial/fdt_serial_renesas_scif.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: BSD-2-Clause +/* + * Copyright (C) 2022 Renesas Electronics Corporation + */ + +#include <sbi_utils/fdt/fdt_helper.h> +#include <sbi_utils/serial/fdt_serial.h> +#include <sbi_utils/serial/renesas-scif.h> + +static int serial_renesas_scif_init(void *fdt, int nodeoff, + const struct fdt_match *match) +{ + struct platform_uart_data uart = { 0 }; + int ret; + + ret = fdt_parse_renesas_scif_node(fdt, nodeoff, &uart); + if (ret) + return ret; + + return renesas_scif_init(uart.addr, uart.freq, uart.baud); +} + +static const struct fdt_match serial_renesas_scif_match[] = { + { .compatible = "renesas,scif-r9a07g043" }, + { /* sentinel */ } +}; + +struct fdt_serial fdt_serial_renesas_scif = { + .match_table = serial_renesas_scif_match, + .init = serial_renesas_scif_init +}; diff --git a/lib/utils/serial/objects.mk b/lib/utils/serial/objects.mk index 6520424..1e6bd2e 100644 --- a/lib/utils/serial/objects.mk +++ b/lib/utils/serial/objects.mk @@ -19,6 +19,9 @@ libsbiutils-objs-$(CONFIG_FDT_SERIAL_GAISLER) += serial/fdt_serial_gaisler.o carray-fdt_serial_drivers-$(CONFIG_FDT_SERIAL_HTIF) += fdt_serial_htif libsbiutils-objs-$(CONFIG_FDT_SERIAL_HTIF) += serial/fdt_serial_htif.o +carray-fdt_serial_drivers-$(CONFIG_FDT_SERIAL_RENESAS_SCIF) += fdt_serial_renesas_scif +libsbiutils-objs-$(CONFIG_FDT_SERIAL_RENESAS_SCIF) += serial/fdt_serial_renesas_scif.o + carray-fdt_serial_drivers-$(CONFIG_FDT_SERIAL_SHAKTI) += fdt_serial_shakti libsbiutils-objs-$(CONFIG_FDT_SERIAL_SHAKTI) += serial/fdt_serial_shakti.o |