[linux-sunxi] Re: [PATCH v3 1/4] dt-bindings: simplefb: Specify node location and handoff related properties

Tomi Valkeinen tomi.valkeinen at ti.com
Thu Nov 13 07:52:39 PST 2014

On 13/11/14 16:46, Hans de Goede wrote:
> Hi,
> On 11/13/2014 03:28 PM, Tomi Valkeinen wrote:
>> On 13/11/14 15:34, Hans de Goede wrote:
>>> +chosen {
>>> +	framebuffer0: framebuffer at 5fc00000 {
>>>  		compatible = "simple-framebuffer";
>>> -		reg = <0x1d385000 (1600 * 1200 * 2)>;
>>> +		reg = <0x5fc00000 (4096 * 1024)>;
>> Was there a reason for this change?
> I changed the node name to match the new bindings text which
> specifies that the node name must be framebuffer@<address>,
> while at it I've taken a real world address range.
> I assume you refer to the bit where the size of the reg property
> is changed ? That indeed is not really necessary.

Yes, I meant the size of the reg prop. As this is an example, I think it
should be as clear as possible.

I guess a valid use case here is to set the size to larger-than-needed,
so that it gets preallocated and you don't need to worry about getting
the memory later when the system has already been running for a longer
time. But if that's the case in this example, I think it would be better
to describe it explicitly.


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