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[83.9.3.193]) by smtp.gmail.com with ESMTPSA id y2-20020a2e7d02000000b002b4750c4db0sm942964ljc.49.2023.06.21.09.05.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 21 Jun 2023 09:05:19 -0700 (PDT) Message-ID: Date: Wed, 21 Jun 2023 18:05:18 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 Subject: Re: [PATCH] arm64: dts: qcom: sm8350: fix BAM DMA crash and reboot Content-Language: en-US To: Krzysztof Kozlowski , Andy Gross , Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bhupesh Sharma , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Manivannan Sadhasivam References: <20230621143627.189134-1-krzysztof.kozlowski@linaro.org> From: Konrad Dybcio In-Reply-To: <20230621143627.189134-1-krzysztof.kozlowski@linaro.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On 21.06.2023 16:36, Krzysztof Kozlowski wrote: > SM8350 HDK and MTP boards were silently dying and rebooting during BAM > DMA probe: > > [ 1.574304] vreg_bob: Setting 3008000-3960000uV > [ 1.576918] bam-dFormat: Log Type - Time(microsec) - Message - > Optional Info > Log Type: B - Since Boot(Power On Reset), D - Delta, S - Statistic > S - QC_IMAGE_VERSION_STRING=BOOT.MXF.1.0-00637.1-LAHAINA-1 > S - IMAGE_VARIANT_STRING=SocLahainaLAA > S - OEM_IMAGE_VERSION_STRING=crm-ubuntu77 > S - Boot Interface: UFS > > It seems that BAM DMA is locally controller (not by firmware) and > requires proper initialization by the driver prior to use, at least on > HDK8350 and MTP8350, but probably on all boards. > > Fixes: f1040a7fe8f0 ("arm64: dts: qcom: sm8350: Add Crypto Engine support") > Signed-off-by: Krzysztof Kozlowski > > --- Reviewed-by: Konrad Dybcio Tested-by: Konrad Dybcio # SM8350 PDX215 Konrad > > Cc: Manivannan Sadhasivam > --- > arch/arm64/boot/dts/qcom/sm8350.dtsi | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/qcom/sm8350.dtsi b/arch/arm64/boot/dts/qcom/sm8350.dtsi > index 88ef478cb5cc..b382ce66387e 100644 > --- a/arch/arm64/boot/dts/qcom/sm8350.dtsi > +++ b/arch/arm64/boot/dts/qcom/sm8350.dtsi > @@ -1741,7 +1741,6 @@ cryptobam: dma-controller@1dc4000 { > interrupts = ; > #dma-cells = <1>; > qcom,ee = <0>; > - qcom,controlled-remotely; > iommus = <&apps_smmu 0x594 0x0011>, > <&apps_smmu 0x596 0x0011>; > };