[PATCH-V2 12/12] Documentation: binding: add sclk adjustment properties to i2c-pxa
robherring2 at gmail.com
Tue Jun 16 06:22:07 PDT 2015
On Mon, Jun 15, 2015 at 10:49 AM, Vaibhav Hiremath
<vaibhav.hiremath at linaro.org> wrote:
> With addition of PXA910 family of devices, the TWSI module supports
> new feature which allows us to adjust SCLK.
> With DT properties i2c-pxa driver takes input configuration
> in nsec and converts it to respective bit-fields,
> - i2c-sclk-low-time-ns : SCLK low time (tlow)
> This property is used along with mode selection.
> - i2c-sclk-high-time-ns : SCLK high time (thigh)
> Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath at linaro.org>
> Documentation/devicetree/bindings/i2c/i2c-pxa.txt | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-pxa.txt b/Documentation/devicetree/bindings/i2c/i2c-pxa.txt
> index 9657db5..0fafd91 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c-pxa.txt
> +++ b/Documentation/devicetree/bindings/i2c/i2c-pxa.txt
> @@ -23,12 +23,25 @@ Optional properties :
> - i2c-disable-after-xfer : If set, driver will disable I2C module
> after msg xfer and enable it again before xfer.
> + (Applicable to PXA910 family):
> + - i2c-sclk-low-time-ns : SCLK low time (tlow), for standard/fast/high
> + speed mode.
> + This property is used along with mode selection. Driver uses this property
> + to set low/high time for standard and fast speed mode, as counter bit-field
> + is same for both.
This belongs below both properties, and it should be clear that both
properties are required if present.
> + - i2c-sclk-high-time-ns : SCLK high time (thigh), Used in case of high speed
> + mode.
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