Hi Hans, Dmitry,
Am Donnerstag, 2. Januar 2014, 10:37:47 schrieb Hans de Goede:
> Hi,
>
> On 01/01/2014 09:56 PM, Dmitry Torokhov wrote:
> > Hi Hans,
> >
> > On Wed, Jan 01, 2014 at 08:30:07PM +0100, Hans de Goede wrote:
> >> +Required properties:
> >> + - compatible: "allwinner,sun4i-lradc-keys"
> >> + - reg: mmio address range of the chip
> >> + - interrupts: interrupt to which the chip is connected
> >> + - allwinner,chan0-step: step in mV between keys must be 150 or 200
> >> + - allwinner,chan0-keycodes: array of include/uapi/linux/input.h KEY_
> >> codes>
> > I think this should be "linux,chan0-keycodes".
>
> Right, because the codes are Linux specific, will fix in v2.
but the property with its "chan0-" thingy would be allwinner-specific if I'm
not mistaken.
Also, instead of inventing yet another vendor-specific property, why not re-use
a button binding similar to gpio-keys like:
lradc: lradc@01c22800 {
compatible = "allwinner,sun4i-lradc-keys";
reg = <0x01c22800 0x100>;
interrupts = <31>;
allwinner,chan0-step = <200>;
#address-cells = <1>;
#size-cells = <0>;
button@0 {
reg = <0>; /* your channel index from above */
linux,code = <115>; /* already used as dt-property */
};
button@1 {
reg = <1>;
linux,code = <114>;
};
...
};
But I may be on the wrong track here, so I've included the devicetree-people
for help, which I guess should've been included from the beginning.
Heiko
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