linux-kernel - [PATCH] arm64: dts: qcom: sm8450: Update SNPS Phy parameters for QRD platform

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Date: Tue, 19 Mar 2024 19:05:27 +0530
From: Udipto Goswami <quic_ugoswami@...cinc.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konrad.dybcio@...aro.org>
CC: <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Rob Herring
	<robh+dt@...nel.org>,
        Udipto Goswami <quic_ugoswami@...cinc.com>
Subject: [PATCH] arm64: dts: qcom: sm8450: Update SNPS Phy parameters for QRD platform

Update SNPS Phy tuning parameters for sm8450 QRD platform to fix
electrical compliance failures.

Signed-off-by: Udipto Goswami <quic_ugoswami@...cinc.com>
---
 arch/arm64/boot/dts/qcom/sm8450-qrd.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8450-qrd.dts b/arch/arm64/boot/dts/qcom/sm8450-qrd.dts
index c7d05945aa51..7b62ead68e77 100644
--- a/arch/arm64/boot/dts/qcom/sm8450-qrd.dts
+++ b/arch/arm64/boot/dts/qcom/sm8450-qrd.dts
@@ -467,6 +467,14 @@
 	vdda-pll-supply = <&vreg_l5b_0p88>;
 	vdda18-supply = <&vreg_l1c_1p8>;
 	vdda33-supply = <&vreg_l2b_3p07>;
+	qcom,squelch-detector-bp = <(-2090)>;
+	qcom,hs-disconnect-bp = <1743>;
+	qcom,pre-emphasis-amplitude-bp = <40000>;
+	qcom,pre-emphasis-duration-bp = <20000>;
+	qcom,hs-amplitude-bp = <2000>;
+	qcom,hs-output-impedance-micro-ohms = <2600000>;
+	qcom,hs-crossover-voltage-microvolt = <(-31000)>;
+	qcom,hs-rise-fall-time-bp = <(-4100)>;
 };
 
 &usb_1_qmpphy {
-- 
2.17.1