On 06/26/2013 05:46 AM, Christian Ruppert wrote:
> On Wed, Jun 19, 2013 at 04:27:44PM -0600, Stephen Warren wrote:
>> On 06/18/2013 03:29 AM, Christian Ruppert wrote:
>>> This patch adds the infrastructure required to register non-linear gpio
>>> ranges through gpiolib and the standard GPIO device tree bindings.
>>
>> I review this in case we decide to go with it anyway.
>>
>>> diff --git a/Documentation/devicetree/bindings/gpio/gpio.txt b/Documentation/devicetree/bindings/gpio/gpio.txt
>>
>>> +In addition, named groups of pins can be mapped to pin groups of a given
>>> +pin controller:
>>> +
>>> + gpio_pio_g: gpio-controller@1480 {
>>> + #gpio-cells = <2>;
>>> + compatible = "fsl,qe-pario-bank-e", "fsl,qe-pario-bank";
>>> + reg = <0x1480 0x18>;
>>> + gpio-controller;
>>> + gpio-ranges = <&pinctrl1 0 0 0>, <&pinctrl2 3 0 0>;
>>> + gpio-ranges-group-names = "foo", "bar";
>>> + };
>>> +
>>> +where,
>>> + &pinctrl1 and &pinctrl2 is the phandle to the pinctrl DT node.
>>> +
>>> + The following value specifies the base GPIO offset of the pin range with
>>> + respect to the GPIO controller's base. The remaining two values must be
>>> + 0 to indicate that a named pin group should be used for the respective
>>> + range. The number of pins in the range is the number of pins in the pin
>>> + group.
>>
>> It'd be good to re-write this section in a similar style to the cleanup
>> patches that I sent for the existing gpio-ranges documentation. That
>> makes the format description more of a raw syntax than English text.
>
> can you please point me to some place where I can find those patches on
> the web?
The start of the thread is at:
https://lists.ozlabs.org/pipermail/devicetree-discuss/2013-June/thread.html#35462
Patch 1/7 has already been applied. 2/7 and on are really the conversion.
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