linux-kernel - Re: [PATCH v3 01/10] arm64: dts: qcom: sdm845: Update PIL region memory map

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Date:   Tue, 22 Jan 2019 10:58:51 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     Andy Gross <andy.gross@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Sibi Sankar <sibis@...eaurora.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 01/10] arm64: dts: qcom: sdm845: Update PIL region memory map

Quoting Bjorn Andersson (2019-01-21 21:51:03)
> @@ -103,10 +138,30 @@
>                         no-map;
>                 };
>  
> +               venus_mem: memory@...00000 {
> +                       reg = <0 0x95800000 0 0x500000>;
> +                       no-map;
> +               };
> +
> +               cdsp_mem: memory@...00000 {
> +                       reg = <0 0x95d00000 0 0x800000>;
> +                       no-map;
> +               };
> +
>                 mba_region: memory@...00000 {
>                         reg = <0 0x96500000 0 0x200000>;
>                         no-map;
>                 };
> +
> +               slpi_mem: memory@...00000 {
> +                       reg = <0 0x96700000 0 0x1400000>;
> +                       no-map;
> +               };
> +
> +               spss_mem: memory@...00000 {
> +                       reg = <0 0x97b00000 0 0x100000>;
> +                       no-map;
> +               };
>         };
>  

What's the plan if certain configurations don't use all these carveouts?
Can we mark the reservation nodes as status = "disabled", or the reverse
and mark them as status = "ok" in all boards, and then reclaim the
memory for peripherals we don't care to use?