diff options
| author | Neil Armstrong | 2020-10-01 10:04:56 +0200 |
|---|---|---|
| committer | Neil Armstrong | 2020-10-05 18:02:16 +0200 |
| commit | 2d481b2e3e22f7be854d381a7bafd92a65e18b23 (patch) | |
| tree | 50cd6ab4c006a6b1a238fdc79f235a6191f1e6d0 /drivers/pwm/Kconfig | |
| parent | 38c1c6f8163334521def945a379e7fca231f4b62 (diff) | |
pwm: Add driver for Amlogic Meson PWM controller
This adds the driver for the PWM controller found in the Amlogic SoCs.
This PWM is only a set of Gates, Dividers and Counters:
PWM output is achieved by calculating a clock that permits calculating
two periods (low and high). The counter then has to be set to switch after
N cycles for the first half period.
The hardware has no "polarity" setting. This driver reverses the period
cycles (the low length is inverted with the high length) for
PWM_POLARITY_INVERSED.
Disabling the PWM stops the output immediately (without waiting for the
current period to complete first).
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Diffstat (limited to 'drivers/pwm/Kconfig')
| -rw-r--r-- | drivers/pwm/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index 61eb468cdeb..b3bd5c6bb7a 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -23,6 +23,13 @@ config PWM_IMX help This PWM is found i.MX27 and later i.MX SoCs. +config PWM_MESON + bool "Enable support for Amlogic Meson SoCs PWM" + depends on DM_PWM + help + This PWM is found on Amlogic Meson SoCs. It supports a + programmable period and duty cycle for 2 independant channels. + config PWM_MTK bool "Enable support for MediaTek PWM" depends on DM_PWM |