From mboxrd@z Thu Jan 1 00:00:00 1970 From: bjorn.andersson@linaro.org (Bjorn Andersson) Date: Fri, 6 Jan 2017 23:30:59 -0800 Subject: [PATCH 1/5] ARM: dts: qcom: apq8064: Add missing scm clock In-Reply-To: <20170107030120.GC5710@hector.attlocal.net> References: <20161221114939.19973-1-bjorn.andersson@linaro.org> <20170107030120.GC5710@hector.attlocal.net> Message-ID: <20170107073059.GV10531@minitux> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri 06 Jan 19:01 PST 2017, Andy Gross wrote: > On Fri, Jan 06, 2017 at 05:10:44PM -0800, John Stultz wrote: > > On Wed, Dec 21, 2016 at 3:49 AM, Bjorn Andersson > > wrote: > > > As per the device tree binding the apq8064 scm node requires the core > > > clock to be specified, so add this. > > > > > > Cc: John Stultz > > > Signed-off-by: Bjorn Andersson > > > --- > > > arch/arm/boot/dts/qcom-apq8064.dtsi | 3 +++ > > > 1 file changed, 3 insertions(+) > > > > > > diff --git a/arch/arm/boot/dts/qcom-apq8064.dtsi b/arch/arm/boot/dts/qcom-apq8064.dtsi > > > index 268bd470c865..78bf155a52f3 100644 > > > --- a/arch/arm/boot/dts/qcom-apq8064.dtsi > > > +++ b/arch/arm/boot/dts/qcom-apq8064.dtsi > > > @@ -303,6 +303,9 @@ > > > firmware { > > > scm { > > > compatible = "qcom,scm-apq8064"; > > > + > > > + clocks = <&gcc CE3_CORE_CLK>; > > > + clock-names = "core"; > > > > > > Tested-by: John Stultz > > > > I know Bjorn has a new version of this patch that uses the > > RPM_DAYTONA_FABRIC_CLK value, but that one results in problems with > > usb gadget functionality on my Nexus7. This one seems to work ok > > though. > > Odd. Is the usb gadget using the daytona but not getting a reference? I wonder > if this is related to not having the bus driver running the bus clk enablement > and frequencies. > The fact that we now reference the Daytona clock means that we're also telling the RPM to disable it, so that might very well be the case. Unfortunately I can't find any block diagram for 8064 to show what hangs off the Daytona, so I'm not sure in what way USB should reference it. Regards, Bjorn