Re: [PATCH v2 2/2] pci: host: Add Broadcom STB PCIE RC controller

From: Florian Fainelli
Date: Mon May 16 2016 - 21:50:22 EST


On 05/11/2016 07:47 AM, Bharat Kumar Gogada wrote:

[snip]

>> + /* Get the value for the log2 of the scb sizes. Subtract 15 from
>> + * each because the target register field has 0==disabled and 1==6KB.
>> + */
>> + log2_scb_sizes = of_get_property(dn, "brcm,log2-scb-sizes", &rlen);
>> + if (log2_scb_sizes) {
>> + for (i = 0; i < rlen / sizeof(u32); i++) {
>> + pcie->scb_size_vals[i]
>> + = (int)of_read_number(log2_scb_sizes + i, 1)
>> + - 15;
>> + pcie->num_memc++;
>> + }
>> + }
> In your device tree documentation this is required property, what if this property
> is missing ?

If you look at the driver, you will see that it assumes a 1GB SCB window
size if this property is absent.

PS: Do you mind trimming your replies in the future just to quote the
relevant part? Pretty much like I just did, this greatly improves the
ability to jump right to where the comments are. Thanks
--
Florian