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author | Hannes Schmelzer <Hannes.Schmelzer@br-automation.com> | 2017-05-30 13:05:44 (GMT) |
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committer | Simon Glass <sjg@chromium.org> | 2017-06-09 19:45:34 (GMT) |
commit | 9620d87259572ef21f0df60988d9a932ca673779 (patch) | |
tree | 1ecdbe9525d593257712ff1c24b2f26accac925e /include/mpc5xxx.h | |
parent | aafbe82fb6ffc233f0db57b675c2577cf37c846b (diff) | |
download | u-boot-9620d87259572ef21f0df60988d9a932ca673779.tar.xz |
cmd/fdt: support single value replacement within an array
With this commit we can modify single values within an array of a dts
property.
This is useful if we have for example a pwm-backlight where we want to
modifiy the pwm frequency per u-boot script.
The pwm is described in dts like this:
backlight {
pwms = <0x0000002b 0x00000000 0x004c4b40>;
};
For changing the frequency, here the 3rd parameter, we simply type:
fdt set /backlight pwms <? ? 0x1E8480>;
For doing all this we:
- backup the property content into our 'SCRATCHPAD'
- only modify the array-cell if the new content doesn't start with '?'
Signed-off-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/mpc5xxx.h')
0 files changed, 0 insertions, 0 deletions