diff options
| author | Michal Simek <michal.simek@xilinx.com> | 2016-02-16 16:17:49 +0100 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-03-17 21:27:39 -0600 |
| commit | 59b35ddd2684bc2f81352d8cd14037752d9b639b (patch) | |
| tree | 85df75c6996ff88a3a1ccc1a7d82714b4ed24214 /drivers/serial/ns16550.c | |
| parent | 4428f3c87ac90c71d5dae3df0289eb2442b628a8 (diff) | |
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>
Moved the new field to the end of the struct to avoid problems:
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/serial/ns16550.c')
| -rw-r--r-- | drivers/serial/ns16550.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c index 93dad338b3..28da9ddfd8 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, |