From 28f645fc9424bf455528cb92bd6a7120281bca45 Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Mon, 25 Oct 2021 17:17:50 +0200 Subject: [PATCH] ARM: dts: stm32: tune the HS USB PHYs on stm32mp157c-ev1 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/stm32mp157c-ev1.dts | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/arch/arm/boot/dts/stm32mp157c-ev1.dts b/arch/arm/boot/dts/stm32mp157c-ev1.dts index 5c5b1ddf7bfd2..e222d2d2cb449 100644 --- a/arch/arm/boot/dts/stm32mp157c-ev1.dts +++ b/arch/arm/boot/dts/stm32mp157c-ev1.dts @@ -375,3 +375,25 @@ &usbphyc { status = "okay"; }; + +&usbphyc_port0 { + 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 { + 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; +}; -- 2.30.2