diff options
| author | Paul Barker <paul.barker.ct@bp.renesas.com> | 2023-10-19 15:30:44 +0100 |
|---|---|---|
| committer | Marek Vasut <marek.vasut+renesas@mailbox.org> | 2023-10-19 17:03:20 +0200 |
| commit | 966caedfa89acaeceb6968f051b7ae26c4c6673f (patch) | |
| tree | 40bbf0ca91bbee900f99584c4979cba9e570dc85 /drivers/serial/serial_sh.c | |
| parent | 0f924d88fa0233abe49cb1c06317f1b486326a90 (diff) | |
serial: sh: Add RZ/G2L SCIF support
Extend the existing driver to support the SCIF serial ports on the
Renesas RZ/G2L (R9A07G044) SoC. This also requires us to ensure that if
there is a reset signal defined in the device tree, it is de-asserted
before we try to talk to the SCIF module.
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Tested-by: Marek Vasut <marek.vasut+renesas@mailbox.org> # R-Car H3 Salvator-XS
Diffstat (limited to 'drivers/serial/serial_sh.c')
| -rw-r--r-- | drivers/serial/serial_sh.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c index 9a698b19ccd..c034ab54e15 100644 --- a/drivers/serial/serial_sh.c +++ b/drivers/serial/serial_sh.c @@ -12,10 +12,12 @@ #include <asm/processor.h> #include <clk.h> #include <dm.h> +#include <dm/device_compat.h> #include <dm/platform_data/serial_sh.h> #include <errno.h> #include <linux/compiler.h> #include <linux/delay.h> +#include <reset.h> #include <serial.h> #include "serial_sh.h" @@ -199,12 +201,24 @@ static int sh_serial_probe(struct udevice *dev) { struct sh_serial_plat *plat = dev_get_plat(dev); struct uart_port *priv = dev_get_priv(dev); + struct reset_ctl rst; + int ret; priv->membase = (unsigned char *)plat->base; priv->mapbase = plat->base; priv->type = plat->type; priv->clk_mode = plat->clk_mode; + /* De-assert the module reset if it is defined. */ + ret = reset_get_by_index(dev, 0, &rst); + if (!ret) { + ret = reset_deassert(&rst); + if (ret < 0) { + dev_err(dev, "failed to de-assert reset line\n"); + return ret; + } + } + sh_serial_init_generic(priv); return 0; @@ -221,6 +235,7 @@ static const struct dm_serial_ops sh_serial_ops = { static const struct udevice_id sh_serial_id[] ={ {.compatible = "renesas,sci", .data = PORT_SCI}, {.compatible = "renesas,scif", .data = PORT_SCIF}, + {.compatible = "renesas,scif-r9a07g044", .data = PORT_SCIFA}, {.compatible = "renesas,scifa", .data = PORT_SCIFA}, {.compatible = "renesas,hscif", .data = PORT_HSCIF}, {} |