linux-kernel - Re: [PATCH 2/2] arm64: dts: qcom: sa8775p: Add IMEM and PIL info region

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Message-ID: <4039d0b0-8f75-46b1-8430-fe2f38ee4e38@quicinc.com>
Date: Thu, 30 May 2024 08:27:07 +0800
From: Tengfei Fan <quic_tengfan@...cinc.com>
To: Mukesh Ojha <quic_mojha@...cinc.com>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <andersson@...nel.org>
CC: <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <kernel@...cinc.com>
Subject: Re: [PATCH 2/2] arm64: dts: qcom: sa8775p: Add IMEM and PIL info
 region



On 5/29/2024 8:36 PM, Mukesh Ojha wrote:
> 
> 
> On 5/29/2024 3:49 PM, Tengfei Fan wrote:
>> Add a simple-mfd representing IMEM on SA8775p and define the PIL
>> relocation info region, so that post mortem tools will be able
>> to locate the loaded remoteprocs.
>>
>> Signed-off-by: Tengfei Fan <quic_tengfan@...cinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/sa8775p.dtsi | 15 +++++++++++++++
>>   1 file changed, 15 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi 
>> b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> index 5632fa896b93..eb33b1587802 100644
>> --- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> @@ -3025,6 +3025,21 @@ tlmm: pinctrl@...0000 {
>>               wakeup-parent = <&pdc>;
>>           };
>> +        sram: sram@...d8000 {
>> +            compatible = "qcom,sa8775p-imem", "syscon", "simple-mfd";
>> +            reg = <0x0 0x146d8000 0x0 0x1000>;
>> +
>> +            #address-cells = <1>;
>> +            #size-cells = <1>;
>> +
>> +            ranges = <0x0 0x0 0x146d8000 0x1000>;
> 
> This could be moved up along with reg region.
> 
> -Mukesh

Sure, I will move up along with reg region in the next version patch series.

> 
>> +
>> +            pil-reloc@94c {
>> +                compatible = "qcom,pil-reloc-info";
>> +                reg = <0x94c 0xc8>;
>> +            };
>> +        };
>> +
>>           apps_smmu: iommu@...00000 {
>>               compatible = "qcom,sa8775p-smmu-500", "qcom,smmu-500", 
>> "arm,mmu-500";
>>               reg = <0x0 0x15000000 0x0 0x100000>;

-- 
Thx and BRs,
Tengfei Fan