tty: serial: sh-sci: Fix Rx on RZ/G2L SCI

commit f92ed0cd9328aed918ebb0ebb64d259eccbcc6e7 upstream.

SCI IP on RZ/G2L alike SoCs do not need regshift compared to other SCI
IPs on the SH platform. Currently, it does regshift and configuring Rx
wrongly. Drop adding regshift for RZ/G2L alike SoCs.

Fixes: dfc80387aefb ("serial: sh-sci: Compute the regshift value for SCI ports")
Cc: stable@vger.kernel.org
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20230321114753.75038-3-biju.das.jz@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index ef8858cc2c7f4abc8d5faf937ad298c14c0f78ed..e67d3a886bf4fb2a71a28cf000fe1e2b67f77c9f 100644 (file)
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -2940,7 +2940,7 @@ static int sci_init_single(struct platform_device *dev,
        port->flags             = UPF_FIXED_PORT | UPF_BOOT_AUTOCONF | p->flags;
        port->fifosize          = sci_port->params->fifosize;
 
-       if (port->type == PORT_SCI) {
+       if (port->type == PORT_SCI && !dev->dev.of_node) {
                if (sci_port->reg_size >= 0x20)
                        port->regshift = 2;
                else