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authorMichal Simek <michal.simek@xilinx.com>2016-02-16 16:05:23 +0100
committerMichal Simek <michal.simek@xilinx.com>2016-02-22 16:21:10 +0100
commitd9a3bec682f9756621615f4306718a356a3230e3 (patch)
tree60d313b23d9b671bf88eedfce54f196cf76c5643 /drivers/serial
parent39bc1a8c8f5eb3238a3349bd4810fabac4118104 (diff)
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dm: ns16550: Add support for reg-offset property
reg-offset is the part of standard 8250 binding in the kernel. It is shifting start of address space by reg-offset. On Xilinx platform this offset is typically 0x1000. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/ns16550.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index 93dad33..28da9dd 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -105,7 +105,7 @@ static void ns16550_writeb(NS16550_t port, int offset, int value)
* As far as we know it doesn't make sense to support selection of
* these options at run-time, so use the existing CONFIG options.
*/
- serial_out_shift(addr, plat->reg_shift, value);
+ serial_out_shift(addr + plat->reg_offset, plat->reg_shift, value);
}
static int ns16550_readb(NS16550_t port, int offset)
@@ -116,7 +116,7 @@ static int ns16550_readb(NS16550_t port, int offset)
offset *= 1 << plat->reg_shift;
addr = map_physmem(plat->base, 0, MAP_NOCACHE) + offset;
- return serial_in_shift(addr, plat->reg_shift);
+ return serial_in_shift(addr + plat->reg_offset, plat->reg_shift);
}
/* We can clean these up once everything is moved to driver model */
@@ -401,6 +401,8 @@ int ns16550_serial_ofdata_to_platdata(struct udevice *dev)
return -EINVAL;
plat->base = addr;
+ plat->reg_offset = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
+ "reg-offset", 0);
plat->reg_shift = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
"reg-shift", 0);
plat->clock = fdtdec_get_int(gd->fdt_blob, dev->of_offset,