linux-kernel - Re: [PATCH v3 3/3] arm64: dts: Enabled MHI device over PCIe

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Message-ID: <20201008131115.GA23649@linux>
Date:   Thu, 8 Oct 2020 18:41:15 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Gokul Sriram Palanisamy <gokulsri@...eaurora.org>
Cc:     sboyd@...nel.org, agross@...nel.org, bjorn.andersson@...aro.org,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, robh+dt@...nel.org,
        sricharan@...eaurora.org
Subject: Re: [PATCH v3 3/3] arm64: dts: Enabled MHI device over PCIe

Hi,

On Thu, Oct 08, 2020 at 06:02:24PM +0530, Gokul Sriram Palanisamy wrote:
> Enabled MHI device support over PCIe and added memory
> reservation required for MHI enabled QCN9000 PCIe card.
> 
> Signed-off-by: Gokul Sriram Palanisamy <gokulsri@...eaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/ipq8074-hk10.dtsi | 47 ++++++++++++++++++++++++++++++
>  1 file changed, 47 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq8074-hk10.dtsi b/arch/arm64/boot/dts/qcom/ipq8074-hk10.dtsi
> index 0827055..e5c1ec0 100644
> --- a/arch/arm64/boot/dts/qcom/ipq8074-hk10.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq8074-hk10.dtsi
> @@ -24,6 +24,22 @@
>  		device_type = "memory";
>  		reg = <0x0 0x40000000 0x0 0x20000000>;
>  	};
> +
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		qcn9000_pcie0: memory@...00000 {
> +			no-map;
> +			reg = <0x0 0x50f00000 0x0 0x03700000>;
> +		};
> +
> +		qcn9000_pcie1: memory@...00000 {
> +			no-map;
> +			reg = <0x0 0x54600000 0x0 0x03700000>;
> +		};
> +	};
>  };
>  
>  &blsp1_spi1 {
> @@ -45,11 +61,42 @@
>  &pcie0 {
>  	status = "ok";
>  	perst-gpio = <&tlmm 58 0x1>;
> +
> +	pcie0_rp: pcie0_rp {
> +		reg = <0 0 0 0 0>;
> +
> +		status = "ok";
> +		mhi_0: qcom,mhi@0 {

MHI doesn't support devicetree as of now so how is this supposed to work?
Have you tested this series with mainline?

Thanks,
Mani

> +			reg = <0 0 0 0 0 >;
> +
> +			qrtr_instance_id = <0x20>;
> +			base-addr = <0x50f00000>;
> +			m3-dump-addr = <0x53c00000>;
> +			etr-addr = <0x53d00000>;
> +			qcom,caldb-addr = <0x53e00000>;
> +		};
> +	};
>  };
>  
>  &pcie1 {
>  	status = "ok";
>  	perst-gpio = <&tlmm 61 0x1>;
> +
> +	pcie1_rp: pcie1_rp {
> +		reg = <0 0 0 0 0>;
> +
> +		status = "ok";
> +		mhi_1: qcom,mhi@1 {
> +			reg = <0 0 0 0 0 >;
> +
> +			qrtr_instance_id = <0x21>;
> +			base-addr = <0x54600000>;
> +			m3-dump-addr = <0x57300000>;
> +			etr-addr = <0x57400000>;
> +			qcom,caldb-addr = <0x57500000>;
> +			};
> +		};
> +	};
>  };
>  
>  &qmp_pcie_phy0 {
> -- 
> 2.7.4
>