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author | Geert Uytterhoeven <geert+renesas@glider.be> | 2018-12-13 15:48:45 +0100 |
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committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2019-04-02 09:57:50 +0200 |
commit | 6161b39a14380815f22851c753c00acf81cfa62a (patch) | |
tree | b001ba015f62243dbbe1bc7920570e80acba8242 /drivers/pinctrl/sh-pfc/Kconfig | |
parent | pinctrl: sh-pfc: rcar-gen3: Retain TDSELCTRL register across suspend/resume (diff) | |
download | linux-dev-6161b39a14380815f22851c753c00acf81cfa62a.tar.xz linux-dev-6161b39a14380815f22851c753c00acf81cfa62a.zip |
pinctrl: sh-pfc: Validate pinmux tables at runtime when debugging
Perform some basic sanity checks on all built-in pinmux tables when
DEBUG is defined, to help catching bugs early.
For now the following checks are included:
- Check register and field widths in descriptors for config registers
with variable-width fields,
- Check relations between pin groups and functions:
- All pin functions must refer to existing pin groups,
- All pin groups must be referred to by a pin function,
- Warn if a pin group is referred to by multiple pin functions
(which is OK for backwards-compatibility aliases),
- Provide suggestions for reducing table sizes: reserved fields of
more than 3 bits can better be split in smaller subfields, as the
storage need is proportional to the square of the width of the
(sub)field,
Note that a dummy non-matching entry is added to the DT match table for
checking r8a7795es1_pinmux_info, as R-Car H3 ES1.0 is matched using
soc_device_match() in r8a7795_pinmux_init(), instead of by the DT match
table.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'drivers/pinctrl/sh-pfc/Kconfig')
0 files changed, 0 insertions, 0 deletions