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Diffstat (limited to 'roms/u-boot/drivers/pwm/Kconfig')
| -rw-r--r-- | roms/u-boot/drivers/pwm/Kconfig | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/pwm/Kconfig b/roms/u-boot/drivers/pwm/Kconfig new file mode 100644 index 000000000..cf7f4c684 --- /dev/null +++ b/roms/u-boot/drivers/pwm/Kconfig @@ -0,0 +1,93 @@ +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. + +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. + +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. + +config PWM_IMX + bool "Enable support for i.MX27 and later PWM" + 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 + help + This PWM is found on MT7622, MT7623, and MT7629. It supports a + programmable period and duty cycle. + +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. + +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. + +config PWM_SIFIVE + bool "Enable support for SiFive PWM" + depends on DM_PWM + help + This PWM is found SiFive's FU540 and other SoCs. + +config PWM_TEGRA + bool "Enable support for the Tegra PWM" + depends on DM_PWM + 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. + +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. + +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. |