linux-kernel - Re: [PATCH] arm64: dts: qcom: sdm845-db845c: Mark cont splash memory region as reserved

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Message-ID: <fa2e0db7-5b27-5a41-920b-b786dc4e521c@linaro.org>
Date:   Thu, 9 Feb 2023 12:11:31 +0000
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Amit Pundir <amit.pundir@...aro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Caleb Connolly <caleb.connolly@...aro.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        dt <devicetree@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: qcom: sdm845-db845c: Mark cont splash memory
 region as reserved

On 09/02/2023 12:08, Konrad Dybcio wrote:
> If the bootloader splash is enabled then this memory is used until the
> DPU driver instructs MDP5 pipes to suck data from a newly assigned address,
> so there's a short window where it is.

It seems a shame to reserve 30 something megabytes of memory for 
continuous splash unless we are actually using it is my point.

If I'm running headless its just wasted memory.

---
bod