linux-kernel - Re: [PATCH 7/7] arm64: dts: qcom: sdm845: enable dma for spi

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Date:   Mon, 11 Jan 2021 17:04:50 +0100
From:   Konrad Dybcio <konrad.dybcio@...ainline.org>
To:     Vinod Koul <vkoul@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mark Brown <broonie@...nel.org>, Wolfram Sang <wsa@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, Andy Gross <agross@...nel.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Amit Pundir <amit.pundir@...aro.org>,
        linux-spi@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/7] arm64: dts: qcom: sdm845: enable dma for spi

Hi,

looks like sdm845-cheza also uses the spi0 bus, which as far as I understand is going to break with the GPI DMA disabled. Perhaps it should also be enabled over there?

Actually, is there a point in disabling DMA for BLSPs/QUPs in the SoC DTSI? I don't think any platform/vendor firmware disables entire hosts..

Konrad