From: Biju Das biju.das.jz@bp.renesas.com
commit 32e293be736b853f168cd065d9cbc1b0c69f545d upstream.
As per HW manual for EMEV2 "R19UH0040EJ0400 Rev.4.00", the UART IP found on EMMA mobile SoC is Register-compatible with the general-purpose 16750 UART chip. Fix UART port type as 16750 and enable 64-bytes fifo support.
Fixes: 22886ee96895 ("serial8250-em: Emma Mobile UART driver V2") Cc: stable@vger.kernel.org Signed-off-by: Biju Das biju.das.jz@bp.renesas.com Link: https://lore.kernel.org/r/20230227114152.22265-2-biju.das.jz@bp.renesas.com [biju: manually fixed the conflicts] Signed-off-by: Biju Das biju.das.jz@bp.renesas.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/tty/serial/8250/8250_em.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/tty/serial/8250/8250_em.c +++ b/drivers/tty/serial/8250/8250_em.c @@ -113,8 +113,8 @@ static int serial8250_em_probe(struct pl memset(&up, 0, sizeof(up)); up.port.mapbase = regs->start; up.port.irq = irq->start; - up.port.type = PORT_UNKNOWN; - up.port.flags = UPF_BOOT_AUTOCONF | UPF_FIXED_PORT | UPF_IOREMAP; + up.port.type = PORT_16750; + up.port.flags = UPF_FIXED_PORT | UPF_IOREMAP | UPF_FIXED_TYPE; up.port.dev = &pdev->dev; up.port.private_data = priv;