On 26 June 2017 19:14:16 BST, Rob Herring <robh@xxxxxxxxxx> wrote: >On Wed, Jun 21, 2017 at 04:30:12PM +0200, Fabrice Gasnier wrote: >> Add documentation for STMicroelectronics STM32 Low-Power Timer >Trigger >> binding. >> >> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx> >> --- >> Changes in v2: >> - s/Low Power/Low-Power >> - remove leading 0x in example (parent node) >> - improve reg property description >> --- >> .../bindings/iio/timer/stm32-lptimer-trigger.txt | 23 >++++++++++++++++++++++ >> 1 file changed, 23 insertions(+) >> create mode 100644 >Documentation/devicetree/bindings/iio/timer/stm32-lptimer-trigger.txt >> >> diff --git >a/Documentation/devicetree/bindings/iio/timer/stm32-lptimer-trigger.txt >b/Documentation/devicetree/bindings/iio/timer/stm32-lptimer-trigger.txt >> new file mode 100644 >> index 0000000..466d99f >> --- /dev/null >> +++ >b/Documentation/devicetree/bindings/iio/timer/stm32-lptimer-trigger.txt >> @@ -0,0 +1,23 @@ >> +STMicroelectronics STM32 Low-Power Timer Trigger >> + >> +STM32 Low-Power Timer provides trigger source (LPTIM output) that >can be used >> +by STM32 internal ADC and/or DAC. >> + >> +Must be a sub-node of an STM32 Low-Power Timer device tree node. >> +See ../mfd/stm32-lptimer.txt for details about the parent node. >> + >> +Required properties: >> +- compatible: Must be "st,stm32-lptimer-trigger". >> +- reg: Selects trigger hardware block. Must be 0, 1 or 2 >> + respectively for lptimer1, lptimer2 or lptimer3 >> + trigger output. > >I guess this answers my question. However, this seems like abuse of the > >reg prop. This should not be how you select a trigger. The DT should >describe all the h/w blocks and then the adc connection is a separate >property. I think this is miss described. Reg is labelling instances of the hardware block which is providing the trigger. The connection to an ADC etc is done from userspace. > >Rob >-- >To unsubscribe from this list: send the line "unsubscribe linux-iio" in >the body of a message to majordomo@xxxxxxxxxxxxxxx >More majordomo info at http://vger.kernel.org/majordomo-info.html -- Sent from my Android device with K-9 Mail. Please excuse my brevity. -- 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
