linux-kernel - [PATCH 3/7] arm64: dts: qcom: msm8996: Strictly limit USB2 host to USB2 speeds

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 25 May 2021 22:02:41 +0200
From:   Konrad Dybcio <konrad.dybcio@...ainline.org>
To:     ~postmarketos/upstreaming@...ts.sr.ht
Cc:     martin.botka@...ainline.org,
        angelogioacchino.delregno@...ainline.org,
        marijn.suijten@...ainline.org, jamipkettunen@...ainline.org,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/7] arm64: dts: qcom: msm8996: Strictly limit USB2 host to USB2 speeds

As the name implies, the USB2 controller should only operate at
USB2 speeds. Make sure it does just that by pinning it to USB
High-Speed (USB2) mode.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...ainline.org>
---
 arch/arm64/boot/dts/qcom/msm8996.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
index 12afd49e0097..08a6e2b5a54b 100644
--- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
@@ -2588,6 +2588,7 @@ usb2: usb@...8800 {
 			assigned-clock-rates = <19200000>, <60000000>;
 
 			power-domains = <&gcc USB30_GDSC>;
+			qcom,select-utmi-as-pipe-clk;
 			status = "disabled";
 
 			dwc3@...0000 {
@@ -2596,6 +2597,7 @@ dwc3@...0000 {
 				interrupts = <0 138 IRQ_TYPE_LEVEL_HIGH>;
 				phys = <&hsusb_phy2>;
 				phy-names = "usb2-phy";
+				maximum-speed = "high-speed";
 				snps,dis_u2_susphy_quirk;
 				snps,dis_enblslpm_quirk;
 			};
-- 
2.31.1