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authorWilliam Breathitt Gray <william.gray@linaro.org>2023-07-20 21:49:43 +0300
committerBartosz Golaszewski <bartosz.golaszewski@linaro.org>2023-07-27 10:37:33 +0300
commit92f7a35836c2e13ae5f0dc8c7f889e92f66a9d19 (patch)
tree7e813ae04c44da96e8bfcbb4238db063ed903058 /net
parent27d5a3cc2137f9e7bf03e4420ef01653d913d3b1 (diff)
downloadlinux-92f7a35836c2e13ae5f0dc8c7f889e92f66a9d19.tar.xz
gpio: 104-dio-48e: Add Counter/Timer support
The 104-DIO-48E features an 8254 Counter/Timer chip providing three counter/timers which can be used for frequency measurement, frequency output, pulse width modulation, pulse width measurement, event count, etc. The counter/timers use the same addresses as PPI 0 (addresses 0x0 to 0x3), so a raw_spinlock_t is used to synchronize operations between the two regmap mappings to prevent clobbering. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: William Breathitt Gray <william.gray@linaro.org> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'net')
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