From 2312a6e7b301f43f02fb30b1dee932df5a87a7d0 Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Mon, 25 Oct 2021 17:17:49 +0200 Subject: [PATCH] ARM: dts: stm32: tune the HS USB PHYs on stm32mp15xx-dkx This patch adds phy tuning parameters for usbphyc port0 (USBH controller) and usbphyc port1 (OTG controller). Phy tuning parameters are used to adjust the phy settings to compensate parasitics, which can be due to USB receptacle, routing, and ESD protection component. Signed-off-by: Amelie Delaunay Signed-off-by: Fabrice Gasnier Signed-off-by: Alexandre Torgue --- arch/arm/boot/dts/stm32mp15xx-dkx.dtsi | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi b/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi index 48beed0f1f30a..6caeb448c1904 100644 --- a/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi +++ b/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi @@ -694,10 +694,26 @@ &usbphyc_port0 { phy-supply = <&vdd_usb>; + st,tune-hs-dc-level = <2>; + st,enable-fs-rftime-tuning; + st,enable-hs-rftime-reduction; + st,trim-hs-current = <15>; + st,trim-hs-impedance = <1>; + st,tune-squelch-level = <3>; + st,tune-hs-rx-offset = <2>; + st,no-lsfs-sc; }; &usbphyc_port1 { phy-supply = <&vdd_usb>; + st,tune-hs-dc-level = <2>; + st,enable-fs-rftime-tuning; + st,enable-hs-rftime-reduction; + st,trim-hs-current = <15>; + st,trim-hs-impedance = <1>; + st,tune-squelch-level = <3>; + st,tune-hs-rx-offset = <2>; + st,no-lsfs-sc; }; &vrefbuf { -- 2.30.2