linux-kernel - Re: [PATCH 3/4] arm64: dts: msm8996: Add SMEM DT nodes

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Message-ID: <20161020215137.GF3145@hector.attlocal.net>
Date:   Thu, 20 Oct 2016 16:51:37 -0500
From:   Andy Gross <andy.gross@...aro.org>
To:     Sarangdhar Joshi <spjoshi@...eaurora.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Stephen Boyd <sboyd@...eaurora.org>,
        Trilok Soni <tsoni@...eaurora.org>
Subject: Re: [PATCH 3/4] arm64: dts: msm8996: Add SMEM DT nodes

On Thu, Oct 20, 2016 at 02:18:33PM -0700, Sarangdhar Joshi wrote:
> On 10/20/2016 12:56 PM, Bjorn Andersson wrote:
> >On Thu 20 Oct 11:56 PDT 2016, Sarangdhar Joshi wrote:
> >
> >>From: Bjorn Andersson <bjorn.andersson@...aro.org>
> >>
> >>Add SMEM and TCSR DT nodes on MSM8996.
> >>
> >>Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> >>Signed-off-by: Sarangdhar Joshi <spjoshi@...eaurora.org>
> >>---
> >> arch/arm64/boot/dts/qcom/msm8996.dtsi | 19 +++++++++++++++++++
> >> 1 file changed, 19 insertions(+)
> >>
> >>diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
> >>index 949b096..0a810f5 100644
> >>--- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
> >>+++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
> >>@@ -169,12 +169,31 @@
> >> 		method = "smc";
> >> 	};
> >>
> >>+	smem {
> >>+		compatible = "qcom,smem";
> >>+
> >>+		memory-region = <&smem_mem>;
> >>+
> >>+		hwlocks = <&tcsr_mutex 3>;
> >>+	};
> >>+
> >> 	soc: soc {
> >> 		#address-cells = <1>;
> >> 		#size-cells = <1>;
> >> 		ranges = <0 0 0 0xffffffff>;
> >> 		compatible = "simple-bus";
> >>
> >>+		tcsr_mutex_regs: syscon@...000 {
> >>+			compatible = "syscon";
> >>+			reg = <0x740000 0x20000>;
> >>+		};
> >>+
> >>+		tcsr_mutex: hwlock {
> >>+			compatible = "qcom,tcsr-mutex";
> >>+			syscon = <&tcsr_mutex_regs 0 0x1000>;
> >>+			#hwlock-cells = <1>;
> >>+		};
> >
> >Sorry, I got this in the wrong place, the hwlock node should sit outside
> >of soc {} - looks like we got this wrong in msm8916 as well.
> 
> Thanks for reviewing the patch. Do you mean to move it under / {}; (i.e.
> root)?

Yes.  Any node that doesn't have reg properties should go under the root.


Andy