The pulse width field requires better precision during calculation. Add a
proper frequency divider calculation based on the PWM clock instead of
hardcoding it to 1.

Signed-off-by: Ion Agorria <ion@agorria.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

The pulse_width is expressed as N/256. A 100% duty cycle is only possible
when multiplied by 256 instead of 255.

Signed-off-by: Jonas Schwöbel <jonasschwoebel@yahoo.de>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Add active-low support to the PWM controller, useful for active-low
pwm-leds.

Signed-off-by: Jonas Schwöbel <jonasschwoebel@yahoo.de>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

When PWM config was updated the clock was restarted which caused loss of
previous configuration of other channels. Further this fixes a bug/hang
that can happen when set_enable was called before set_config.

Signed-off-by: Jonas Schwöbel <jonasschwoebel@yahoo.de>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

This caused linker errors in cases where IPUv3 was enabled (which
defines its own clocks).

Fixes: bfc778cb93a ("driver: pwm: pwm-imx: get and enable per/ipg
                     clock using dm")
Signed-off-by: Brian Ruley <brian.ruley@gehealthcare.com>

Remove DECLARE_GLOBAL_DATA_PTR from files where gd is not used, and
drop the unnecessary inclusion of asm/global_data.h.

Headers should be included directly by the files that need them,
rather than indirectly via global_data.h.

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> #STMicroelectronics boards and STM32MP1 ram test driver
Tested-by: Anshul Dalal <anshuld@ti.com> #TI boards
Acked-by: Yao Zi <me@ziyao.cc> #TH1520
Signed-off-by: Peng Fan <peng.fan@nxp.com>

Replace %pe with %d and adjust the argument accordingly in a dev_err()
call in the pwm-aspeed driver. U-boot doesn't support the %pe format
specifier. Likely it was copied from Linux.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>

This simplifies the "depends on" since we don't need DM_PWM listed
explicitly there as it already is made explicit via the surrounding
"if". No intended change in behavior.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>

Since it is registered as a U_CLASS_DRIVER, Sandbox PWM driver is a
Driver Model Driver and thus to be usable depends on DM_PWM to be
selected.

Let's make sure of that via the appropriate Kconfig option.

Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>