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u-boot/drivers/pwm/Kconfig

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dm: pwm: Add a PWM uclass Add a uclass that supports Pulse Width Modulation (PWM) devices. It provides methods to enable/disable and configure the device. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22 02:44:54 +00:00
config DM_PWM
bool "Enable support for pulse-width modulation devices (PWM)"
depends on DM
help
A pulse-width modulator emits a pulse of varying width and provides
control over the duty cycle (high and low time) of the signal. This
is often used to control a voltage level. The more time the PWM
spends in the 'high' state, the higher the voltage. The PWM's
frequency/period can be controlled along with the proportion of that
time that the signal is high.
pwm: rockchip: Add a PWM driver for Rockchip SoCs Add a simple driver which implements the standard PWM uclass interface. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22 02:44:55 +00:00
pwm: Add a driver for Chrome OS EC PWM This PWM is used in rk3399-gru-bob and rk3399-gru-kevin to control the display brightness. We can only change the duty cycle, so on set_config() we just try to match the duty cycle that dividing duty_ns by period_ns gives us. To disable, we set the duty cycle to zero while keeping the old value for when we want to re-enable it. The cros_ec_set_pwm_duty() function is taken from Depthcharge's cros_ec_set_bl_pwm_duty() but modified to use the generic pwm type. The driver itself is very loosely based on rk_pwm.c for the general pwm driver structure. The devicetree binding file is from Linux, before it was converted to YAML at 5df5a577a6b4 ("dt-bindings: pwm: Convert google,cros-ec-pwm.txt to YAML format") in their repo. Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-10-22 20:49:27 +00:00
config PWM_CROS_EC
bool "Enable support for the Chrome OS EC PWM"
depends on DM_PWM
help
This PWM is found on several Chrome OS devices and controlled by
the Chrome OS embedded controller. It may be used to control the
screen brightness and/or the keyboard backlight depending on the
device.
exynos: pwm: Add a driver for the exynos5 PWM This driver supports the standard PWM API. There are 5 PWMs. Four are used normally and the last is normally used as a timer. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2016-02-22 04:08:49 +00:00
config PWM_EXYNOS
bool "Enable support for the Exynos PWM"
depends on DM_PWM
help
This PWM is found on Samsung Exynos 5250 and other Samsung SoCs. It
supports a programmable period and duty cycle. A 32-bit counter is
used. It provides 5 channels which can be independently
programmed. Channel 4 (the last) is normally used as a timer.
pwm: imx: add Kconfig support add Kconfig support for this driver. Signed-off-by: Heiko Schocher <hs@denx.de> Acked-by: Martyn Welch <martyn.welch@collabora.co.uk>
2019-05-28 04:51:51 +00:00
config PWM_IMX
bool "Enable support for i.MX27 and later PWM"
help
This PWM is found i.MX27 and later i.MX SoCs.
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>
2020-10-01 08:04:56 +00:00
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.
mediatek: pwm: add pwm driver for MediaTek SoCs This driver support the standard PWM API for MediaTek MT7623, MT7622 and MT7629 SoCs Signed-off-by: Sam Shih <sam.shih@mediatek.com>
2020-02-21 13:01:46 +00:00
config PWM_MTK
bool "Enable support for MediaTek PWM"
depends on DM_PWM
help
This PWM is found on MT7622, MT7623, and MT7629. It supports a
programmable period and duty cycle.
pwm: rockchip: Add a PWM driver for Rockchip SoCs Add a simple driver which implements the standard PWM uclass interface. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-22 02:44:55 +00:00
config PWM_ROCKCHIP
bool "Enable support for the Rockchip PWM"
depends on DM_PWM
help
This PWM is found on RK3288 and other Rockchip SoCs. It supports a
programmable period and duty cycle. A 32-bit counter is used.
Various options provided in the hardware (such as capture mode and
continuous/single-shot) are not supported by the driver.
tegra: Convert CONFIG_PWM_TEGRA to Kconfig Move this option to Kconfig and clean up the header files. Adjust the only user (the LCD driver) to work with the new driver. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-01-30 23:38:00 +00:00
dm: sandbox: pwm: Add a basic pwm test Unfortunately a test for the PWM uclass was not included when it was submitted. This was noticed when trying to add more functionality: http://patchwork.ozlabs.org/patch/748172/ Add a simple test to get us started. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-04-17 03:01:11 +00:00
config PWM_SANDBOX
bool "Enable support for the sandbox PWM"
help
This is a sandbox PWM used for testing. It provides 3 channels and
records the settings passed into it, but otherwise does nothing
useful. The PWM can be enabled but is not connected to any outputs
so this is not very useful.
pwm: Add PWM driver for SiFive SoC Adds a PWM driver for PWM chip present in SiFive's HiFive Unleashed SoC This driver is simple port of Linux pwm sifive driver from Linux v5.6 commit: 9e37a53eb051 ("pwm: sifive: Add a driver for SiFive SoC PWM") Signed-off-by: Yash Shah <yash.shah@sifive.com> Reviewed-by: Heiko Schocher <hs@denx.de>
2020-04-23 11:27:16 +00:00
config PWM_SIFIVE
bool "Enable support for SiFive PWM"
depends on DM_PWM
help
This PWM is found SiFive's FU540 and other SoCs.
tegra: Convert CONFIG_PWM_TEGRA to Kconfig Move this option to Kconfig and clean up the header files. Adjust the only user (the LCD driver) to work with the new driver. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-01-30 23:38:00 +00:00
config PWM_TEGRA
bool "Enable support for the Tegra PWM"
tegra: video: Move LCD driver to use the DM PWM driver Use the driver-model PWM driver in preference to the old code. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-01-30 23:38:01 +00:00
depends on DM_PWM
tegra: Convert CONFIG_PWM_TEGRA to Kconfig Move this option to Kconfig and clean up the header files. Adjust the only user (the LCD driver) to work with the new driver. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-01-30 23:38:00 +00:00
help
This PWM is found on Tegra 20 and other Nvidia SoCs. It supports
four channels with a programmable period and duty cycle. Only a
32KHz clock is supported by the driver but the duty cycle is
configurable.
pwm: sunxi: add support for PWM found on Allwinner A64 This commit adds basic support for PWM found on Allwinner A64. It can be used for pwm_backlight driver (e.g. for Pinebook) Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
2018-05-14 15:16:20 +00:00
config PWM_SUNXI
bool "Enable support for the Allwinner Sunxi PWM"
depends on DM_PWM
help
This PWM is found on H3, A64 and other Allwinner SoCs. It supports a
programmable period and duty cycle. A 16-bit counter is used.
pwm: ti: am33xx: add enhanced pwm driver Enhanced high resolution PWM module (EHRPWM) hardware can be used to generate PWM output over 2 channels. This commit adds PWM driver support for EHRPWM device present on AM33XX SOC. The code is based on the drivers/pwm/pwm-tiehrpwm.c driver of the Linux kernel version 5.9-rc7. For DT binding details see: - Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt Signed-off-by: Dario Binacchi <dariobin@libero.it>
2020-12-29 23:16:24 +00:00
config PWM_TI_EHRPWM
bool "Enable support for EHRPWM PWM"
depends on DM_PWM && ARCH_OMAP2PLUS
default y
help
PWM driver support for the EHRPWM controller found on TI SOCs.
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