[OpenWrt-Devel] [bcm53xx] Pin Controller in Northstar
rafal at milecki.pl
Mon May 4 08:11:10 EDT 2020
Hi Vivek & sorry for late reply.
It took me few hours to evaluate current DMU / CRU / pinctrl situation.
On 03.05.2020 22:15, Vivek Unune wrote:
> On Sun, Apr 5, 2020 at 10:48 AM Vivek Unune <npcomplete13 at gmail.com> wrote:
>> On Tue, Mar 31, 2020 at 5:51 PM Vivek Unune <npcomplete13 at gmail.com> wrote:
>>> Hi All / Rafał,
>>> I'm about to update device tree for Linksys Panamera router (aka
>>> EA9500) so that it uses pin controller defined in BCM5301X.dtsi .
>>> However, the mainline kernel's Northstar pinctrl driver code
>>> (ns-pinctrl.cs ) is out of sync with the device tree. As you see,
>>> the driver looks for syscon node which is absent in the device tree.
>>> Was there a patch submitted to update the device tree along with the
>>> driver? I could only find the patch wrt the driver 
>>> If the device tree was indeed updated, which git repository should I
>>> use to prepare and test my patch?
That mismatch is caused by a failed cleanup action for DMU / CRU. I
decided to refactor those bindings, some changes were accepted and some
were rejected as Rob found some issues in my submitted work.
It results in a slightly messy situation that needs sorting out properly
with all nodes considered. I'll write e-mail to devicetree@ shortly.
>>>  https://github.com/torvalds/linux/blob/master/arch/arm/boot/dts/bcm5301x.dtsi
>>>  https://github.com/torvalds/linux/blob/master/drivers/pinctrl/bcm/pinctrl-ns.c
>>>  https://patchwork.kernel.org/patch/10735933/
>> Adding Rafał
>> So I've managed to compile and have the pincontrol working in OpenWrt.
>> However, in order to submit my patch upstream I will need correct tree
>> to create my patch.
>> Rafał - can you point me in the right direction?
> Bump & change subject.
For DTS changes you should branch devicetree/next of:
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