linux-kernel - Re: [PATCH 1/3] arm64: dts: qcom: msm8996: add support to pcie

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Message-ID: <20171011061726.GO1165@minitux>
Date:   Tue, 10 Oct 2017 23:17:26 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     srinivas.kandagatla@...aro.org
Cc:     Andy Gross <andy.gross@...aro.org>, 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
Subject: Re: [PATCH 1/3] arm64: dts: qcom: msm8996: add support to pcie

On Mon 14 Aug 04:34 PDT 2017, srinivas.kandagatla@...aro.org wrote:

> From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> 
> This patch adds support to 3 pcie root complexes found on MSM8996.
> 
[..]
> diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
[..]
> +		agnoc@0 {
> +			power-domains = <&gcc AGGRE0_NOC_GDSC>;
> +			compatible = "simple-pm-bus";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges;

I also need to enable GCC_AGGRE0_SNOC_AXI_CLK, GCC_AGGRE0_CNOC_AHB_CLK
and GCC_SMMU_AGGRE0_AXI_CLK for pcie to actually work. It find the
atl1c, but the board restarts as the interface is brought up.

Regards,
Bjorn