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Date:	Wed, 16 Jul 2014 15:20:40 -0700
From:	Bjorn Andersson <>
To:	pramod gurav <>
Cc:	Bjorn Andersson <>,
	Rob Herring <>,
	Pawel Moll <>,
	Mark Rutland <>,
	"" <>,
	"" <>,
	linux-arm-msm <>
Subject: Re: [PATCH v4 1/3] soc: devicetree: bindings: Add Qualcomm RPM DT binding

On Wed, Jul 16, 2014 at 3:06 AM, pramod gurav
<> 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
> <> wrote:
>> +       rpm@...000 {
>> +               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@...1000 {
    compatible = "syscon";
    reg = <0x2011000 0x1000>;

Enable CONFIG_MFD_SYSCON and put the dt snippet somewhere under soc
and you should be good.

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