2024-03-19 13:36:03

by Udipto Goswami

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 <[email protected]>
---
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

2024-03-21 06:18:39

by Udipto Goswami

Subject: Re: [PATCH] arm64: dts: qcom: sm8450: Update SNPS Phy parameters for QRD platform

Hi All,

On 3/19/2024 7:05 PM, Udipto Goswami wrote:
> Update SNPS Phy tuning parameters for sm8450 QRD platform to fix
> electrical compliance failures.
>
> Signed-off-by: Udipto Goswami <[email protected]>
> ---
> 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 {

sender and cc list is wrong, please ignore this.
Will send it to the right recipients.

Thanks,
-Udipto