[PATCH 01/16] pwm: samsung: Update DT bindings documentation to cover clocks
From: Stephen Warren <hidden>
Date: 2013-08-20 20:34:30
Also in:
linux-samsung-soc
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.
quoted hunk ↗ jump to hunk
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 <redacted> (although this patch isn't backwards-compatible since before now, DT nodes didn't need to provide any entries in clocks)