> On Apr 4, 2016, at 06:57 , Robert Nelson <[email protected]> wrote: > > > > On Mon, Apr 4, 2016 at 8:41 AM, Robert Nelson <[email protected]> wrote: > > > On Mon, Apr 4, 2016 at 4:47 AM, Rick Mann <[email protected]> wrote: > I'm trying to get my audio cape to work (which is nearly identical to the > cape that was available for sale). I've had it working to some level of > success with past kernels (3.1.18), but now I'm on 4.4.6. My existing DTS > didn't work, so I'm looking at how the BB-BONE-AUDI-02 DTS is written. > > One of the differences is that it doesn't explicitly call out the McASP clock > frequency like the older one did. Instead, it seems to refer to clk_mcasp0. > But when I copy the same code into my DTS, I get: > > [ 103.180866] of_resolve_phandles: Could not find symbol 'clk_mcasp0' > [ 103.187269] bone_capemgr bone_capemgr: slot #4: Failed to resolve tree > > I found it defined by grepping /boot/dtbs. It's in > /boot/dtbs/4.4.6-bone-rt-r6/am335x-abbbi.dtb. Where can I find the source > files for these DTBs? > > Is this dtb part of what's loaded by default in 4.4.6-bone-rt-r6? If not, can > I copy the definition into my > > FWIW, here's my DTS and some output from dmesg: http://pastebin.com/niDkWdWV > > > You need to add this to your base *.dtb: > > https://github.com/RobertCNelson/dtb-rebuilder/blob/4.1-ti/src/arm/am335x-boneblack-audio.dts#L17-L28 > > btw, the one thing i haven't tried, have everything in the clk defined except > for the gpio and load that as part of the audio overlay.. > > side note, we just got audio (cape audio rev b) working a few weeks back, so > this is relatively new
Thanks, Robert. I'll give that a shot. I'm not immediately sure what my current base *.dtb is, nor how to build a new one and specify that be used. But maybe I can piggyback off the one you show there. Out of curiosity, why can't this be done as an overlay (to help me understand the Device Tree better)? Thanks! -- Rick Mann [email protected] -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
