linux-kernel - Re: [PATCH v3 06/10] arm64: dts: qcom: sc7280: Update reserved memory map

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Message-ID: <39da02506af192de14d346cdf80d0e4c@codeaurora.org>
Date:   Fri, 20 Aug 2021 19:39:20 +0530
From:   Sibi Sankar <sibis@...eaurora.org>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     bjorn.andersson@...aro.org, robh+dt@...nel.org, will@...nel.org,
        saiprakash.ranjan@...eaurora.org, swboyd@...omium.org,
        mka@...omium.org, ohad@...ery.com, agross@...nel.org,
        mathieu.poirier@...aro.org, robin.murphy@....com, joro@...tes.org,
        p.zabel@...gutronix.de, linux-arm-msm@...r.kernel.org,
        linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        evgreen@...omium.org, dianders@...omium.org
Subject: Re: [PATCH v3 06/10] arm64: dts: qcom: sc7280: Update reserved memory
 map

On 2021-08-19 10:07, Vinod Koul wrote:
> Hi Sibi,
> 
> On 19-08-21, 09:06, Sibi Sankar wrote:
> 
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi 
>> b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> index 5e4f4f3b738a..894106efadfe 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> @@ -48,6 +48,16 @@
>>  		#size-cells = <2>;
>>  		ranges;
>> 
>> +		hyp_mem: memory@...00000 {
>> +			reg = <0x0 0x80000000 0x0 0x600000>;
>> +			no-map;
> 
> This should conflict with the memory defined in this file:
> 
>         memory@...00000 {
>                 device_type = "memory";
>                 /* We expect the bootloader to fill in the size */
>                 reg = <0 0x80000000 0 0>;
>         };
> 
> I think this should be updated?

Vinod,

I prefer we leave ^^ node untouched.
For platforms using hyp_mem, the
regions defined in the memory map
are valid and for the other platforms
not using hyp_mem we would just delete
them in the board files anyway.

-- 
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