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Message-ID: <7ef88262-4292-3077-00a1-dc06b2483b10@quicinc.com>
Date: Tue, 10 May 2022 23:05:42 +0530
From: Krishna Kurapati PSSNV <quic_kriskura@...cinc.com>
To: Pavan Kondeti <quic_pkondeti@...cinc.com>
CC: Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Stephen Boyd <swboyd@...omium.org>,
"Doug Anderson" <dianders@...omium.org>,
Matthias Kaehlcke <mka@...omium.org>,
Wesley Cheng <wcheng@...eaurora.org>,
<devicetree@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-phy@...ts.infradead.org>, <quic_ppratap@...cinc.com>,
<quic_vpulyala@...cinc.com>
Subject: Re: [v3 3/3] arm64: dts: qcom: sc7280: Update SNPS Phy params for
SC7280 IDP device
On 5/9/2022 8:50 AM, Pavan Kondeti wrote:
> Hi Krishna,
>
> On Sun, May 08, 2022 at 05:42:27PM +0530, Krishna Kurapati wrote:
>> Overriding the SNPS Phy tuning parameters for SC7280 IDP device.
>>
>> Signed-off-by: Sandeep Maheswaram <quic_c_sanm@...cinc.com>
>> Signed-off-by: Krishna Kurapati <quic_kriskura@...cinc.com>
>> ---
>> arch/arm64/boot/dts/qcom/sc7280-idp.dtsi | 6 ++++++
>> 1 file changed, 6 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
>> index 5eb6689..ad85ffb 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
>> @@ -325,6 +325,12 @@
>> vdda-pll-supply = <&vreg_l10c_0p8>;
>> vdda33-supply = <&vreg_l2b_3p0>;
>> vdda18-supply = <&vreg_l1c_1p8>;
>> + qcom,hs-rise-fall-time-bps = <0>;
>> + qcom,squelch-detector-bps = <(-2090)>;
>> + qcom,hs-disconnect-bps = <1743>;
>> + qcom,hs-amplitude-bps = <1780>;
>> + qcom,hs-crossover-voltage = <(-31)>;
>> + qcom,hs-output-impedance = <2600>;
>> };
> Is this an example change or do we see any HS electrical compliance failures
> on SC7280 IDP that will get fixed with these override sequence?
>
> Thanks,
> Pavan
Hi Pavan,
These results were based on compliance testing results.
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