ns16550: change reg-shift property default to zero
Change reg-shift property default to zero. When the integer property
is missing, it should be taken as zero. This is consistent to Linux
drivers/tty/serial/of_serial.c.
The x86 and most powerpc use reg-shift of 0. Most others use reg-shift
of 2. While reg-shift of 1 is rarely used.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index 166deab..23243ee 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -403,7 +403,7 @@
plat->base = addr;
plat->reg_shift = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
- "reg-shift", 1);
+ "reg-shift", 0);
plat->clock = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
"clock-frequency",
CONFIG_SYS_NS16550_CLK);