On 04/13/2012 02:01 PM, Simon Glass wrote:
> Hi Scott,
>
> On Fri, Apr 13, 2012 at 11:43 AM, Scott Wood <scottw...@freescale.com> wrote:
>> On 04/13/2012 01:29 PM, Simon Glass wrote:
>>> Add a NAND controller along with a bindings file for review.
>>>
>>> Signed-off-by: Simon Glass <s...@chromium.org>
>>> ---
>>> Changes in v2:
>>> - Update NAND binding to add "nvidia," prefix
>>>
>>> arch/arm/dts/tegra20.dtsi | 6 ++
>>> doc/device-tree-bindings/nand/nvidia-nand.txt | 68
>>> +++++++++++++++++++++++++
>>> 2 files changed, 74 insertions(+), 0 deletions(-)
>>> create mode 100644 doc/device-tree-bindings/nand/nvidia-nand.txt
>>>
>>> diff --git a/arch/arm/dts/tegra20.dtsi b/arch/arm/dts/tegra20.dtsi
>>> index bc64f42..7be0462 100644
>>> --- a/arch/arm/dts/tegra20.dtsi
>>> +++ b/arch/arm/dts/tegra20.dtsi
>>> @@ -200,4 +200,10 @@
>>> reg = <0x7000f400 0x200>;
>>> };
>>>
>>> + nand: nand-controller@0x70008000 {
>>
>> s/nand-controller@/flash@/ (or "nand@" if you really want -- there's
>> enough of that in use already)
>
> Changed to flash@.
>
> I am a little concerned that we are co-mingling the controller with
> the device, but I think this is ok.
No, you're right -- it should be something like nand-controller@. For
some reason I didn't notice the node split when I wrote that.
>>> + #address-cells = <0>;
>>> + #size-cells = <0>;
>>> + compatible = "nvidia,tegra20-nand";
>>> + reg = <0x70008000 0x100>;
>>> + };
>>> };
>>> diff --git a/doc/device-tree-bindings/nand/nvidia-nand.txt
>>> b/doc/device-tree-bindings/nand/nvidia-nand.txt
>>> new file mode 100644
>>> index 0000000..b19ce8e
>>> --- /dev/null
>>> +++ b/doc/device-tree-bindings/nand/nvidia-nand.txt
>>> @@ -0,0 +1,68 @@
>>> +NAND Flash
>>> +----------
>>> +
>>> +(there isn't yet a generic binding in Linux, so this describes what is in
>>> +U-Boot)
>>
>> Ideally the binding should not be Linux-specific or U-Boot specific --
>> it's just the binding that describes this hardware.
>
> Agreed, but trying to agree a binding in Linux in the absence of a
> driver may be beyond my powers.
It shouldn't be, and if it is then we should move on to a better binding
repository (Grant set up devicetree.org for this a while back, but I'm
not sure what the process is for considering a binding there to be final).
-Scott
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