On 08/20/2013 11:31 AM, Tomasz Figa wrote: > PWM driver consumes at least one and up to three clocks, which need to be > specified in device tree when used. This patch updates bindings > documentation to add information about clocks. > diff --git a/Documentation/devicetree/bindings/pwm/pwm-samsung.txt b/Documentation/devicetree/bindings/pwm/pwm-samsung.txt > +- 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. It might be nice to explicitly enumerate which variants (or rather, I suppose which exact compatible values) support which optional clocks. However, I suppose it's fine to just say "go read the HW manual" instead. So, this patch, Acked-by: Stephen Warren <swarren@xxxxxxxxxx> (although this patch isn't backwards-compatible since before now, DT nodes didn't need to provide any entries in clocks) -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
