linux-kernel - Re: [PATCH 3/3] arm64: dts: qcom: sc7280: Add cpucp mbox node

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <32cf828b-91c8-4710-8943-f2d174ada53b@quicinc.com>
Date: Thu, 17 Oct 2024 17:21:30 +0530
From: Shivnandan Kumar <quic_kshivnan@...cinc.com>
To: Bjorn Andersson <andersson@...nel.org>
CC: Sibi Sankar <quic_sibis@...cinc.com>,
        Jassi Brar
	<jassisinghbrar@...il.com>, Rob Herring <robh@...nel.org>,
        "Krzysztof
 Kozlowski" <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <cros-qcom-dts-watchers@...omium.org>,
        Konrad Dybcio
	<konradybcio@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        "Ramakrishna
 Gottimukkula" <quic_rgottimu@...cinc.com>
Subject: Re: [PATCH 3/3] arm64: dts: qcom: sc7280: Add cpucp mbox node



On 10/6/2024 8:05 AM, Bjorn Andersson wrote:
> On Tue, Sep 24, 2024 at 10:39:41AM GMT, Shivnandan Kumar wrote:
>> Add the CPUCP mailbox node required for communication with CPUCP.
> 
> I'd like to see a description of why that's useful...
> 

I will add in next patch set.

> But perhaps more importantly, why are there no user(s) of this?
> 

We will later add features such as BUS DCVS (memlat algorithm in CPUCP) 
and CPUCP logging based on this series.

> Regards,
> Bjorn
> 


>>
>> Signed-off-by: Shivnandan Kumar <quic_kshivnan@...cinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/sc7280.dtsi | 8 ++++++++
>>   1 file changed, 8 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> index 3d8410683402..4b9b26a75c62 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> @@ -4009,6 +4009,14 @@ gem_noc: interconnect@...0000 {
>>   			qcom,bcm-voters = <&apps_bcm_voter>;
>>   		};
>>
>> +		cpucp_mbox: mailbox@...30000 {
>> +			compatible = "qcom,sc7280-cpucp-mbox";
>> +			reg = <0 0x18590000 0 0x2000>,
>> +			      <0 0x17C00000 0 0x10>;
>> +			interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>;
>> +			#mbox-cells = <1>;
>> +		};
>> +
>>   		system-cache-controller@...0000 {
>>   			compatible = "qcom,sc7280-llcc";
>>   			reg = <0 0x09200000 0 0x58000>, <0 0x09280000 0 0x58000>,
>> --
>> 2.25.1
>>