linux-kernel - Re: [PATCH v2 3/3] arm64: dts: Enabled MHI device over PCIe

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Message-ID: <d3b10e0842192eb7016ebc447e148378@codeaurora.org>
Date:   Wed, 30 Sep 2020 16:34:21 +0530
From:   gokulsri@...eaurora.org
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc:     agross@...nel.org, bjorn.andersson@...aro.org, robh+dt@...nel.org,
        sboyd@...eaurora.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        sricharan@...eaurora.org
Subject: Re: [PATCH v2 3/3] arm64: dts: Enabled MHI device over PCIe

On 2020-08-06 15:56, Manivannan Sadhasivam wrote:
> On Thu, Aug 06, 2020 at 03:02:12PM +0530, Gokul Sriram Palanisamy 
> wrote:
>> Enabled MHI device support over PCIe and added memory
>> reservation required for MHI enabled QCN9000 PCIe card.
>> 
> 
> There is no DT support exist for MHI as of now, so this is not going to 
> work.
> 
> Thanks,
> Mani
> 
Hi Mani,
The dt entries are to be used by the ath11k driver. Will remove 
mhi,max-channels and mhi,timeout
and post a new revision.

Thanks,
Gokul
>> Signed-off-by: Gokul Sriram Palanisamy <gokulsri@...eaurora.org>
>> ---
>>  arch/arm64/boot/dts/qcom/ipq8074-hk10.dtsi | 58 
>> ++++++++++++++++++++++++++++++
>>  arch/arm64/boot/dts/qcom/ipq8074.dtsi      |  8 +++++
>>  2 files changed, 66 insertions(+)
>> 
>> diff --git a/arch/arm64/boot/dts/qcom/ipq8074-hk10.dtsi 
>> b/arch/arm64/boot/dts/qcom/ipq8074-hk10.dtsi
>> index 0827055..d201a7b 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 {
>> @@ -74,3 +90,45 @@
>>  		nand-bus-width = <8>;
>>  	};
>>  };
>> +
>> +&pcie0_rp {
>> +	status = "ok";
>> +
>> +	mhi_0: qcom,mhi@0 {
>> +		reg = <0 0 0 0 0 >;
>> +		qrtr_instance_id = <0x20>;
>> +		#address-cells = <0x2>;
>> +		#size-cells = <0x2>;
>> +
>> +		base-addr = <0x50f00000>;
>> +		qcom,caldb-addr = <0x53E00000>;
>> +		qrtr_node_id = <0x27>;
>> +		mhi,max-channels = <30>;
>> +		mhi,timeout = <10000>;
>> +
>> +		pcie0_mhi: pcie0_mhi {
>> +			status = "ok";
>> +		};
>> +	};
>> +};
>> +
>> +&pcie1_rp {
>> +	status = "ok";
>> +
>> +	mhi_1: qcom,mhi@1 {
>> +		reg = <0 0 0 0 0 >;
>> +		qrtr_instance_id = <0x21>;
>> +		#address-cells = <0x2>;
>> +		#size-cells = <0x2>;
>> +
>> +		base-addr = <0x54600000>;
>> +		qcom,caldb-addr = <0x57500000>;
>> +		qrtr_node_id = <0x28>;
>> +		mhi,max-channels = <30>;
>> +		mhi,timeout = <10000>;
>> +
>> +		pcie1_mhi: pcie1_mhi {
>> +			status = "ok";
>> +		};
>> +	};
>> +};
>> diff --git a/arch/arm64/boot/dts/qcom/ipq8074.dtsi 
>> b/arch/arm64/boot/dts/qcom/ipq8074.dtsi
>> index b651345..eef47c1 100644
>> --- a/arch/arm64/boot/dts/qcom/ipq8074.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/ipq8074.dtsi
>> @@ -709,6 +709,10 @@
>>  				      "ahb",
>>  				      "axi_m_sticky";
>>  			status = "disabled";
>> +
>> +			pcie1_rp: pcie1_rp {
>> +				reg = <0 0 0 0 0>;
>> +			};
>>  		};
>> 
>>  		pcie0: pci@...00000 {
>> @@ -779,6 +783,10 @@
>>  				      "axi_m_sticky",
>>  				      "axi_s_sticky";
>>  			status = "disabled";
>> +
>> +			pcie0_rp: pcie0_rp {
>> +				reg = <0 0 0 0 0>;
>> +			};
>>  		};
>> 
>>  		tcsr_q6: syscon@...5000 {
>> --
>> 2.7.4
>>