Hi Stephen, This patch should have been marked as RFC. Thanks for the review. On Sat, Sep 14, 2013 at 4:16 AM, Stephen Warren <swarren@xxxxxxxxxxxxx> wrote: > On 09/13/2013 05:57 AM, Prabhakar Lad wrote: >> From: "Lad, Prabhakar" <prabhakar.csengg@xxxxxxxxx> >> >> This patch fixes the DT binding properties of adv7343 decoder. >> The pdata which was being read from the DT property, is removed >> as this can done internally in the driver using cable detection >> register. >> >> This patch also removes the pdata of ADV7343 which was passed from >> DA850 machine. > >> diff --git a/Documentation/devicetree/bindings/media/i2c/adv7343.txt b/Documentation/devicetree/bindings/media/i2c/adv7343.txt > >> Required Properties : >> - compatible: Must be "adi,adv7343" >> +- reg: I2C device address. >> +- vddio-supply: I/O voltage supply. >> +- vddcore-supply: core voltage supply. >> +- vaa-supply: Analog power supply. >> +- pvdd-supply: PLL power supply. > > Old DTs won't contain those properties. This breaks the DT ABI if those > properties are required. Is that acceptable? > As of now adv7343 via DT binding is not enabled in any platforms so this wont break any DT ABI. > If it is, I think we should document that older versions of the binding > didn't require those properties, so they may in fact be missing. > > I note that this patch doesn't actually update the driver to > regulator_get() anything. Shouldn't it? > As of now the driver isn’t enabling/accepting the regulators, so should I add those in DT properties or not ? >> 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. >> -- 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. >> -- 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>. >> -- 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>. > > At a very quick glance, it's not really clear why those properties are > being removed. They seem like HW configuration, so might be fine to put > into DT. What replaces these? Yes these were HW configuration but, its now internally handled in the driver. The 'ad,adv7343-power-mode-dac' property which enabled the DAC's 1..6 , so now in the driver by default all the DAC's are enabled by default and enable unconnected DAC auto power down. Similarly 'ad,adv7343-sd-config-dac-out' property enabled SD DAC's 1..2 but now is enabled by reading the CABLE DETECT register which tells the status of DAC1/2. Regards, --Prabhakar -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
