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Message-ID: <CAMf-jSkvC4P8-06XbmMH2i0xHvaYwH_VbfG6Ypp3F+ct5ZxM+A@mail.gmail.com> Date: Thu, 17 Jul 2014 21:34:37 +0530 From: pramod gurav <pramod.gurav.etc@...il.com> To: Bjorn Andersson <bjorn@...o.se> Cc: Bjorn Andersson <bjorn.andersson@...ymobile.com>, Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>, Mark Rutland <mark.rutland@....com>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, linux-arm-msm <linux-arm-msm@...r.kernel.org> Subject: Re: [PATCH v4 1/3] soc: devicetree: bindings: Add Qualcomm RPM DT binding On Thu, Jul 17, 2014 at 3:50 AM, Bjorn Andersson <bjorn@...o.se> wrote: >> On Wed, Jul 16, 2014 at 4:30 AM, Bjorn Andersson >> <bjorn.andersson@...ymobile.com> 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. > Thanks Bjorn. Did this and seen things working (sata atleast). > Regards, > Bjorn -- Thanks and Regards Pramod -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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