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172c5a7d81
The driver registers two regmaps on the same platform device: an MMIO
regmap for the AO CEC registers, and an indirect regmap (using
reg_read()/reg_write() callbacks) for the CEC controller core registers.
Neither regmap_config sets a .name, so both default their debugfs
directory to the device name and collide:
debugfs: 'ff800280.cec' already exists in 'regmap'
Because of the clash the second regmap's debugfs directory fails to
register, so its registers can no longer be inspected via debugfs.
Give the indirect CEC core regmap a distinct name. The two debugfs
directories then become "<dev>.cec" and "<dev>.cec-core". This only
affects debugfs naming; register access is unchanged.
Tested on an ODROID-N2 (Amlogic S922X): the warning is gone and both
/sys/kernel/debug/regmap/ff800280.cec and ff800280.cec-core are present.
Fixes: b7778c4668 ("media: platform: meson: Add Amlogic Meson G12A AO CEC Controller driver")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Yi Ding <yi.s.ding@gmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
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