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

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Date:   Thu, 08 Oct 2020 23:03:42 +0530
From:   gokulsri@...eaurora.org
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.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

On 2020-10-08 18:41, Manivannan Sadhasivam wrote:
> 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
> 

  Hi Mani,
  This node entries will be consumed by ath11k driver and is not supposed 
to be consumed by mhi driver.
  And yes, it is tested on Mainline.

  Regards,
  Gokul

>> +			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
>>