linux-kernel - Re: [PATCH v5 1/2] arm64: tegra: add ACONNECT, ADMA and AGIC nodes

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Message-ID: <9c5dbfc5-122b-2049-fdad-7ffeab6a9ec9@nvidia.com>
Date:   Thu, 13 Jun 2019 20:13:11 +0530
From:   Sameer Pujar <spujar@...dia.com>
To:     Jon Hunter <jonathanh@...dia.com>, <thierry.reding@...il.com>,
        <robh+dt@...nel.org>, <mark.rutland@....com>
CC:     <mkumard@...dia.com>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 1/2] arm64: tegra: add ACONNECT, ADMA and AGIC nodes


On 6/13/2019 7:39 PM, Jon Hunter wrote:
> On 13/06/2019 11:41, Sameer Pujar wrote:
>> Add DT nodes for following devices on Tegra186 and Tegra194
>>   * ACONNECT
>>   * ADMA
>>   * AGIC
>>
>> Signed-off-by: Sameer Pujar <spujar@...dia.com>
>> ---
>>   changes from previous revision
>>    * fixed size value for ranges property in aconnect
>>
>>   arch/arm64/boot/dts/nvidia/tegra186.dtsi | 67 ++++++++++++++++++++++++++++++++
>>   arch/arm64/boot/dts/nvidia/tegra194.dtsi | 67 ++++++++++++++++++++++++++++++++
>>   2 files changed, 134 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
>> index 426ac0b..5e9fe7e 100644
>> --- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
>> +++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
>> @@ -1295,4 +1295,71 @@
>>   				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
>>   		interrupt-parent = <&gic>;
>>   	};
>> +
>> +	aconnect {
>> +		compatible = "nvidia,tegra210-aconnect";
>> +		clocks = <&bpmp TEGRA186_CLK_APE>,
>> +			 <&bpmp TEGRA186_CLK_APB2APE>;
>> +		clock-names = "ape", "apb2ape";
>> +		power-domains = <&bpmp TEGRA186_POWER_DOMAIN_AUD>;
>> +		#address-cells = <1>;
>> +		#size-cells = <1>;
>> +		ranges = <0x02900000 0x0 0x02900000 0x200000>;
>> +		status = "disabled";
>> +
>> +		dma-controller@...0000 {
>> +			compatible = "nvidia,tegra186-adma";
>> +			reg = <0x02930000 0x50000>;
> Sorry but I have been double checking these register addresses and I
> wonder if this should be a length of 0x10000. The 0x50000 includes all
> the ranges where the registers are paged, so I don't think that this is
> correct including these.
Is it because we don't have virtualization support yet?
and isn't the range 0x10000 covers only global register space, don't we
want to include page1 ADMA channel registers. In that case it would be
0x20000.
>
>> +			interrupt-parent = <&agic>;
>> +			interrupts =  <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>,
>> +				      <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
>> +			#dma-cells = <1>;
>> +			clocks = <&bpmp TEGRA186_CLK_AHUB>;
>> +			clock-names = "d_audio";
>> +			status = "disabled";
>> +		};
>> +
>> +		agic: interrupt-controller@...1000 {
> I think that this should be 2a40000 but otherwise looks correct.
  done.
> Sorry but you are too quick for me to keep up!
>
> Cheers
> Jon
>