Functional testing of mainline vchiq driver

[Michael Zoran]

On Wed, 2016-10-26 at 20:00 +0200, Stefan Wahren wrote:
> Hi Michael,
> 
> > Michael Zoran <mzoran at crowfest.net> hat am 26. Oktober 2016 um
> > 01:22
> > geschrieben:
> > 
> > 
> > On Tue, 2016-10-25 at 14:52 -0700, Michael Zoran wrote:
> > > On Tue, 2016-10-25 at 14:45 -0700, Michael Zoran wrote:
> > > > On Tue, 2016-10-25 at 23:20 +0200, Stefan Wahren wrote:
> > > > > 
> > > > > thanks, here are my steps to get the driver working:
> > > > > 
> > > > > * checkout Greg's staging-testing tree
> > > > > * applied "staging: vc04_services: Remove dmac_map_area"
> > > > > * remove BROKEN in drivers/staging/vc04_services/Kconfig
> > > > > * add the following node to arch/arm/boot/dts/bcm283x.dtsi
> > > > > 
> > > > >                vchiq: vchiq at 7e00b840 {
> > > > >                        compatible = "brcm,bcm2835-vchiq";
> > > > >                        reg = <0x7e00b840 0xf>;
> > > > >                        interrupts = <0 2>;
> > > > >                        cache-line-size = <32>;
> > > > >                        firmware = <&firmware>;
> > > > >                };
> > > > > 
> > > > > * build kernel and dtb for Raspberry Pi B
> > > > > 
> > > > > 
> > > 
> > > BTW, the downstream tree has an override for the cache-line-
> > > size.  Did
> > > you perhaps try and add it to the device tree as well?
> > > 
> > > bcm2708_common.dtsi:
> > > 
> > > 	__overrides__ {
> > > 		cache_line_size = <&vchiq>, "cache-line-size:0";
> > > 	};
> 
> i applied the second version of your patch "staging: vc04_services:
> Remove
> dmac_map_area" and rebuild the whole driver. Now vchiq_test works
> without any
> issues. The __overrides__ wasn't necessary.

Cool.  I was concerned for a moment that I broke something.