linux-kernel - Re: [PATCH v3 3/4] arm64: dts: qcom: qcs615: add the SCM node

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Message-ID: <234d5fba-928d-480c-a9bf-1a8c5fc6f58d@quicinc.com>
Date: Mon, 4 Nov 2024 15:36:37 +0800
From: Qingqing Zhou <quic_qqzhou@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC: <andersson@...nel.org>, <konradybcio@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <robimarko@...il.com>,
        <will@...nel.org>, <robin.murphy@....com>, <joro@...tes.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <iommu@...ts.linux.dev>
Subject: Re: [PATCH v3 3/4] arm64: dts: qcom: qcs615: add the SCM node



在 11/1/2024 2:59 AM, Dmitry Baryshkov 写道:
> On Wed, Oct 30, 2024 at 04:42:19PM +0800, Qingqing Zhou wrote:
>>
>>
>> 在 10/25/2024 2:02 PM, Dmitry Baryshkov 写道:
>>> On Fri, Oct 25, 2024 at 08:37:31AM +0530, Qingqing Zhou wrote:
>>>> Add the SCM node for QCS615 platform. It is an interface to
>>>> communicate to the secure firmware.
>>>>
>>>> Signed-off-by: Qingqing Zhou <quic_qqzhou@...cinc.com>
>>>> ---
>>>>  arch/arm64/boot/dts/qcom/qcs615.dtsi | 7 +++++++
>>>>  1 file changed, 7 insertions(+)
>>>>
>>>> diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>>> index ac4c4c751da1..027c5125f36b 100644
>>>> --- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>>> +++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>>> @@ -278,6 +278,13 @@
>>>>  		reg = <0 0x80000000 0 0>;
>>>>  	};
>>>>  
>>>> +	firmware {
>>>> +		scm {
>>>> +			compatible = "qcom,scm-qcs615", "qcom,scm";
>>>> +			qcom,dload-mode = <&tcsr 0x13000>;
>>>
>>> No CRYPTO clock?
>> NO, response from Qualcomm clock team is "the current QCS615 RPMH code does not have the clock support for CE clock", so we don't configure clocks here.
> 
> Is this going to change in future?
NO, from Qualcomm clock team, the clock/BW is handled internally in our trustzone and do not see any requirement change going forward to move the clocks/BW vote to HLOS driver.
> 
>>>
>>>> +		};
>>>> +	};
>>>> +
>>>>  	camnoc_virt: interconnect-0 {
>>>>  		compatible = "qcom,qcs615-camnoc-virt";
>>>>  		#interconnect-cells = <2>;
>>>> -- 
>>>> 2.17.1
>>>>
>>>
>>
>