When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
We cannot call dm_scan_fdt_dev() with of-platdata since there is no device
tree. Fix this with an #if check.
Fixes: 3be9a37 (dm: syscon: scan sub-nodes of the syscon node)
Signed-off-by: Simon Glass <sjg@chromium.org>
Provide a trivial syscon driver matching the generic "syscon" compatible
string, allowing for simple system controllers to be used without a
custom driver just as in Linux.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Provide a new function which can cope with obtaining information from
of-platdata instead of the device tree.
Signed-off-by: Simon Glass <sjg@chromium.org>
If the device cannot be probed, syscon_get_by_driver_data() will still
return a useful value in its devp parameter. Ensure that it returns NULL
instead.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
We have a way to find a regmap by its syscon driver data value. Add the same
for syscon itself.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This function can only handle a syscon device. It is possible that someone
will make a mistake, so add a check for this.
Also we should return -ENODEV when a device cannot be found, so update the
syscon_get_regmap_by_driver_data() to follow this convention.
Signed-off-by: Simon Glass <sjg@chromium.org>
Many SoCs have a number of system controllers which are dealt with as a
group by a single driver. It is a pain to have to add lots of compatible
strings and/or separate drivers for each. Instead we can identify the
controllers by a number and request the address of the one we want.
Add a simple implementation of this which can be used by SoC driver code.
Signed-off-by: Simon Glass <sjg@chromium.org>
