Hi Sylwester, On Fri, Aug 23, 2013 at 11:33 PM, Sylwester Nawrocki <s.nawro...@samsung.com> wrote: > Cc: DT binding maintainers > > On 07/20/2013 08:21 AM, Lad, Prabhakar wrote: >> From: "Lad, Prabhakar" <prabhakar.cse...@gmail.com> >> >> add OF support for the adv7343 driver. >> >> Signed-off-by: Lad, Prabhakar <prabhakar.cse...@gmail.com> >> --- > [...] >> .../devicetree/bindings/media/i2c/adv7343.txt | 48 >> ++++++++++++++++++++ >> drivers/media/i2c/adv7343.c | 46 >> ++++++++++++++++++- >> 2 files changed, 93 insertions(+), 1 deletion(-) >> create mode 100644 Documentation/devicetree/bindings/media/i2c/adv7343.txt >> >> diff --git a/Documentation/devicetree/bindings/media/i2c/adv7343.txt >> b/Documentation/devicetree/bindings/media/i2c/adv7343.txt >> new file mode 100644 >> index 0000000..5653bc2 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/media/i2c/adv7343.txt >> @@ -0,0 +1,48 @@ >> +* Analog Devices adv7343 video encoder >> + >> +The ADV7343 are high speed, digital-to-analog video encoders in a 64-lead >> LQFP >> +package. Six high speed, 3.3 V, 11-bit video DACs provide support for >> composite >> +(CVBS), S-Video (Y-C), and component (YPrPb/RGB) analog outputs in standard >> +definition (SD), enhanced definition (ED), or high definition (HD) video >> +formats. >> + >> +Required Properties : >> +- compatible: Must be "adi,adv7343" >> + >> +Optional Properties : >> +- adi,power-mode-sleep-mode: on enable the current consumption is reduced to >> + micro ampere level. All DACs and the internal PLL >> + circuit are disabled. > > Sorry for getting back so late to this. I realize this is already queued in > the media tree. But this binding doesn't look good enough to me. I think it > will need to be corrected during upcoming -rc period. > Thanks for the catch :-)
> It might be hard to figure out only from the chip's datasheet what > adi,power-mode-sleep-mode really refers to. AFAICS it is for assigning some > value to a specific register. If we really need to specify register values > in the device tree then it would probably make sense to describe to which > register this apply. Now the name looks like derived from some structure > member name in the Linux driver of the device. > the property is derived from the datasheet itself for example the 'adi,power-mode-sleep-mode' --> Register 0x0 power mode bit 0 'adi,power-mode-pll-ctrl' ---> Register 0x0 power mode bit 1 'adi,dac-enable' ----> Register 0x0 power mode bit 2-7 'adi,sd-dac-enable' ---> Register 0x82 SD mode register bit 1-2 [1] http://www.analog.com/static/imported-files/data_sheets/ADV7342_7343.pdf >> +- adi,power-mode-pll-ctrl: PLL and oversampling control. This control allows >> + internal PLL 1 circuit to be powered down and the >> + oversampling to be switched off. > > Similar comments applies to this property. > >> +- ad,adv7343-power-mode-dac: array configuring the power on/off DAC's 1..6, >> + 0 = OFF and 1 = ON, Default value when this >> + property is not specified is <0 0 0 0 0 0>. > > Name of the property is incorrect here. It has changed to "adi,dac-enable". > OK >> +- ad,adv7343-sd-config-dac-out: array configure SD DAC Output's 1 and 2, 0 >> = OFF >> + and 1 = ON, Default value when this property >> is >> + not specified is <0 0>. > > Similarly, "adi,sd-dac-enable. > OK Regards, --Prabhakar Lad -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
