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@xxxxxxxxxxxxxxx
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
v4->v5:
* Added fixes tag
* Updated commit header and description
* Removed UPF_BOOT_AUTOCONF from flags.
* Reordered the patch (from patch#4 to patch#1) to make it easier
for applying it to stable branches.
v3->v4:
* Both {RZ/V2M, EMMA mobile} SoC is Register-compatible
with the general-purpose 16750 UART chip. So started using
generic compatible and removed struct serial8250_em_hw_info.
* Removed Rb tag from Ilpo as it is new change.
v2->v3:
* Replaced of_device_get_match_data()->device_get_match_data().
* Replaced of_device.h->property.h
* Dropped struct serial8250_em_hw_info *info from priv and started
using a local variable info in probe().
* Retained Rb tag from Ilpo as changes are trivial.
v2:
* New patch
---
drivers/tty/serial/8250/8250_em.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_em.c b/drivers/tty/serial/8250/8250_em.c
index f8e99995eee9..d94c3811a8f7 100644
--- a/drivers/tty/serial/8250/8250_em.c
+++ b/drivers/tty/serial/8250/8250_em.c
@@ -106,8 +106,8 @@ static int serial8250_em_probe(struct platform_device *pdev)
memset(&up, 0, sizeof(up));
up.port.mapbase = regs->start;
up.port.irq = irq;
- 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;
--
2.25.1
