linux-kernel - Re: [PATCH v2 2/4] arm: dts: qcom: qdu1000: Add SDHCI node

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Message-ID: <751606e3-99e0-9384-d749-605281922f94@quicinc.com>
Date:   Tue, 23 May 2023 19:23:41 +0530
From:   Komal Bajaj <quic_kbajaj@...cinc.com>
To:     Bjorn Andersson <andersson@...nel.org>
CC:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Bhupesh Sharma <bhupesh.sharma@...aro.org>,
        <linux-mmc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH v2 2/4] arm: dts: qcom: qdu1000: Add SDHCI node



On 5/22/2023 8:31 PM, Bjorn Andersson wrote:
> On Mon, May 22, 2023 at 03:06:18PM +0530, Komal Bajaj wrote:
>
> Path says arch/arm64/, so $subject should start "arm64: dts: qcom: ..."
>
>> Add sdhc node for eMMC on QDU1000 and QRU1000 SoCs.
>>
>> Signed-off-by: Komal Bajaj <quic_kbajaj@...cinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/qdu1000.dtsi | 51 +++++++++++++++++++++++++++
>>   1 file changed, 51 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/qdu1000.dtsi b/arch/arm64/boot/dts/qcom/qdu1000.dtsi
>> index 734438113bba..38ee7115a35f 100644
>> --- a/arch/arm64/boot/dts/qcom/qdu1000.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/qdu1000.dtsi
>> @@ -19,6 +19,10 @@
>>   
>>   	chosen: chosen { };
>>   
>> +	aliases {
>> +		mmc0 = &sdhc_1; /* eMMC */
> Don't we just have a single SDC instance on this platform? If so you
> don't need aliases.
Sure, will remove aliases.
>
>> +	};
>> +
>>   	cpus {
>>   		#address-cells = <2>;
>>   		#size-cells = <0>;
>> @@ -842,6 +846,53 @@
>>   			#hwlock-cells = <1>;
>>   		};
>>   
>> +		sdhc_1: mmc@...4000 {
> And you can skip the "_1" suffix...
Sure

Thanks
Komal
>
> Regards,
> Bjorn
>
>> +			compatible = "qcom,qdu1000-sdhci", "qcom,sdhci-msm-v5";
>> +			reg = <0x0 0x08804000 0x0 0x1000>,
>> +			      <0x0 0x08805000 0x0 0x1000>;
>> +			reg-names = "hc", "cqhci";
>> +
>> +			interrupts = <GIC_SPI 207 IRQ_TYPE_LEVEL_HIGH>,
>> +				     <GIC_SPI 223 IRQ_TYPE_LEVEL_HIGH>;
>> +			interrupt-names = "hc_irq", "pwr_irq";
>> +
>> +			clocks = <&gcc GCC_SDCC5_AHB_CLK>,
>> +				 <&gcc GCC_SDCC5_APPS_CLK>,
>> +				 <&rpmhcc RPMH_CXO_CLK>;
>> +			clock-names = "iface",
>> +				      "core",
>> +				      "xo";
>> +
>> +			resets = <&gcc GCC_SDCC5_BCR>;
>> +
>> +			interconnects = <&system_noc MASTER_SDCC_1 0 &mc_virt SLAVE_EBI1 0>,
>> +					<&gem_noc MASTER_APPSS_PROC 0 &system_noc SLAVE_SDCC_2 0>;
>> +			interconnect-names = "sdhc-ddr", "cpu-sdhc";
>> +			power-domains = <&rpmhpd QDU1000_CX>;
>> +			operating-points-v2 = <&sdhc1_opp_table>;
>> +
>> +			iommus = <&apps_smmu 0x80 0x0>;
>> +			dma-coherent;
>> +
>> +			bus-width = <8>;
>> +
>> +			qcom,dll-config = <0x0007642c>;
>> +			qcom,ddr-config = <0x80040868>;
>> +
>> +			status = "disabled";
>> +
>> +			sdhc1_opp_table: opp-table {
>> +				compatible = "operating-points-v2";
>> +
>> +				opp-384000000 {
>> +					opp-hz = /bits/ 64 <384000000>;
>> +					required-opps = <&rpmhpd_opp_nom>;
>> +					opp-peak-kBps = <6528000 1652800>;
>> +					opp-avg-kBps = <400000 0>;
>> +				};
>> +			};
>> +		};
>> +
>>   		pdc: interrupt-controller@...0000 {
>>   			compatible = "qcom,qdu1000-pdc", "qcom,pdc";
>>   			reg = <0x0 0xb220000 0x0 0x30000>, <0x0 0x174000f0 0x0 0x64>;
>> -- 
>> 2.17.1
>>