On 29/12/14 10:27, Stefan Wahren wrote: > This patch fixes off-by-one issues in the devicetree binding of > mxs-lradc. > > According to the i.MX23 and i.MX28 reference manuals [1][2] the range of > NUM_SAMPLES is 0..31, but property ave-ctrl is substracted by 1 before used. > > Considering all limitations the range of DELAY is 1..2047, but also > property ave-delay is substracted by 1 before used. > > The patch has been suggested by Hartmut Knaack and Kristina Martsenko. > > [1] - http://cache.freescale.com/files/dsp/doc/ref_manual/IMX23RM.pdf > [2] - http://cache.freescale.com/files/dsp/doc/ref_manual/MCIMX28RM.pdf > > Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxx> Hmm. I debated whether to take these through the fixes tree. Whilst they are technically fixing the driver, it is only a fashion that makes it a little more flexible and the devicetree binding more resilient. Good stuff, but can probably wait a cycle. Anyhow, as such - applied to the togreg branch of iio.git. Initially pushed out as testing for the autobuilders to play. Thanks, Jonathan > --- > .../bindings/staging/iio/adc/mxs-lradc.txt | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/Documentation/devicetree/bindings/staging/iio/adc/mxs-lradc.txt b/Documentation/devicetree/bindings/staging/iio/adc/mxs-lradc.txt > index ee05dc3..3075377 100644 > --- a/Documentation/devicetree/bindings/staging/iio/adc/mxs-lradc.txt > +++ b/Documentation/devicetree/bindings/staging/iio/adc/mxs-lradc.txt > @@ -12,9 +12,9 @@ Optional properties: > property is not present, then the touchscreen is > disabled. 5 wires is valid for i.MX28 SoC only. > - fsl,ave-ctrl: number of samples per direction to calculate an average value. > - Allowed value is 1 ... 31, default is 4 > + Allowed value is 1 ... 32, default is 4 > - fsl,ave-delay: delay between consecutive samples. Allowed value is > - 1 ... 2047. It is used if 'fsl,ave-ctrl' > 1, counts at > + 2 ... 2048. It is used if 'fsl,ave-ctrl' > 1, counts at > 2 kHz and its default is 2 (= 1 ms) > - fsl,settling: delay between plate switch to next sample. Allowed value is > 1 ... 2047. It counts at 2 kHz and its default is > -- 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
