[PATCH 3/6] mv643xx.c: Add basic device tree support.

[Arnaud Patard (Rtp)]

Ben Dooks <ben.dooks at codethink.co.uk> writes:

> On 31/07/12 08:14, Arnaud Patard (Rtp) wrote:
>> Ian Molton<ian.molton at codethink.co.uk>  writes:
>> Hi,
>>
>> [...]
>>
>>> @@ -2873,7 +2913,31 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
>>>   	struct resource *res;
>>>   	int err;
>>>
>>> -	pd = pdev->dev.platform_data;
>>> +	if (pdev->dev.of_node) {
>>> +		struct device_node *np = NULL;
>>> +
>>> +		/* when all users of this driver use FDT, we can remove this */
>>> +		pd = kzalloc(sizeof(*pd), GFP_ATOMIC);
>>> +		if (!pd) {
>>> +			dev_dbg(&pdev->dev, "Could not allocate platform data\n");
>>> +			return -ENOMEM;
>>> +		}
>>> +
>>> +		of_property_read_u32(pdev->dev.of_node,
>>> +			"port_number",&pd->port_number);
>>> +		of_property_read_u32(pdev->dev.of_node,
>>> +			"phy_addr",&pd->phy_addr);
>>
>> I guess we need something for tx_csum_limit in the device tree too. It's
>> important for kirkwood and dove.
>
> Is this something for all kirkwood devices? I think the best way of
> doing this is to give the driver a new device-tree name and having
> it set this field in the init sequence.
>
> However we could also do with some of these as dt parameters just in
> case people want to try and alter them for their own systems.

It's for _all_ kirkwood and dove devices. The kirkwood and dove fifos
are smaller than the orion/mv78xxx ones (no idea about armada xp/370).

Arnaud