[bcm53xx] Pin Controller in Northstar

[Vivek Unune]

Hi Rafał,

Has there been any update on this?

Thanks in advance!

Vivek

On Mon, May 4, 2020 at 8:44 AM Vivek Unune <npcomplete13 at gmail.com> wrote:
>
> 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!