On Wed, Jul 16, 2014 at 3:06 AM, pramod gurav
<pramod.gurav.etc@xxxxxxxxx> wrote:
> Hi Bjorn,
>
> RPM breaks on IFC6410 without entry for 'qcom.ipc' node. Please find
> my observations below.
>
> On Wed, Jul 16, 2014 at 4:30 AM, Bjorn Andersson
> <bjorn.andersson@xxxxxxxxxxxxxx> wrote:
[...]
>> + rpm@108000 {
>> + compatible = "qcom,rpm-msm8960";
>> + reg = <0x108000 0x1000>;
>> + qcom,ipc = <&apcs 0x8 2>;
>
> Tried adding this but there is no reference to 'apcs' registers itself
> in any dts.
>
> Without these changes rpm breaks hence not able to test SATA which needs rpm.
>
Hi Pramod,
Unfortunately the ipc bits resides in a block that needs to be
accesses by various device drivers so I had to extract the access; so
you now need to reference it via a syscon handle and offset instead -
as described above.
The apcs node I used for testing this with looks like this:
apcs: syscon@2011000 {
compatible = "syscon";
reg = <0x2011000 0x1000>;
};
Enable CONFIG_MFD_SYSCON and put the dt snippet somewhere under soc
and you should be good.
Regards,
Bjorn
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