mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
1b3f25ce99
Updated supported SoC name for pwm-samsung. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
52 lines
2.2 KiB
Plaintext
52 lines
2.2 KiB
Plaintext
* Samsung PWM timers
|
|
|
|
Samsung SoCs contain PWM timer blocks which can be used for system clock source
|
|
and clock event timers, as well as to drive SoC outputs with PWM signal. Each
|
|
PWM timer block provides 5 PWM channels (not all of them can drive physical
|
|
outputs - see SoC and board manual).
|
|
|
|
Be aware that the clocksource driver supports only uniprocessor systems.
|
|
|
|
Required properties:
|
|
- compatible : should be one of following:
|
|
samsung,s3c2410-pwm - for 16-bit timers present on S3C24xx SoCs
|
|
samsung,s3c6400-pwm - for 32-bit timers present on S3C64xx SoCs
|
|
samsung,s5p6440-pwm - for 32-bit timers present on S5P64x0 SoCs
|
|
samsung,s5pc100-pwm - for 32-bit timers present on S5PC100, S5PV210,
|
|
Exynos4210 rev0 SoCs
|
|
samsung,exynos4210-pwm - for 32-bit timers present on Exynos4210,
|
|
Exynos4x12, Exynos5250 and Exynos5420 SoCs
|
|
- reg: base address and size of register area
|
|
- interrupts: list of timer interrupts (one interrupt per timer, starting at
|
|
timer 0)
|
|
- clock-names: should contain all following required clock names:
|
|
- "timers" - PWM base clock used to generate PWM signals,
|
|
and any subset of following optional clock names:
|
|
- "pwm-tclk0" - first external PWM clock source,
|
|
- "pwm-tclk1" - second external PWM clock source.
|
|
Note that not all IP variants allow using all external clock sources.
|
|
Refer to SoC documentation to learn which clock source configurations
|
|
are available.
|
|
- clocks: should contain clock specifiers of all clocks, which input names
|
|
have been specified in clock-names property, in same order.
|
|
- #pwm-cells: should be 3. See pwm.txt in this directory for a description of
|
|
the cells format. The only third cell flag supported by this binding is
|
|
PWM_POLARITY_INVERTED.
|
|
|
|
Optional properties:
|
|
- samsung,pwm-outputs: list of PWM channels used as PWM outputs on particular
|
|
platform - an array of up to 5 elements being indices of PWM channels
|
|
(from 0 to 4), the order does not matter.
|
|
|
|
Example:
|
|
pwm@7f006000 {
|
|
compatible = "samsung,s3c6400-pwm";
|
|
reg = <0x7f006000 0x1000>;
|
|
interrupt-parent = <&vic0>;
|
|
interrupts = <23>, <24>, <25>, <27>, <28>;
|
|
clocks = <&clock 67>;
|
|
clock-names = "timers";
|
|
samsung,pwm-outputs = <0>, <1>;
|
|
#pwm-cells = <3>;
|
|
}
|