[OpenWrt-Devel] [bcm53xx] Pin Controller in Northstar

[Vivek Unune]

On Mon, May 4, 2020 at 8:11 AM Rafał Miłecki <rafal at milecki.pl> wrote:
>
> 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 [1].
> >>> However, the mainline kernel's Northstar pinctrl driver code
> >>> (ns-pinctrl.cs [2]) 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 [3]
> >>>
> >>> 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.
>
>
> >>> Thanks,
> >>>
> >>> Vivek
> >>>
> >>> [1] https://github.com/torvalds/linux/blob/master/arch/arm/boot/dts/bcm5301x.dtsi
> >>> [2] https://github.com/torvalds/linux/blob/master/drivers/pinctrl/bcm/pinctrl-ns.c
> >>> [3] 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?
> >>
> >> Thanks,
> >>
> >> Vivek
> >
> > Bump & change subject.
>
> For DTS changes you should branch devicetree/next of:
> https://github.com/Broadcom/stblinux.git

Excellent! Thanks!

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