[PATCH 1/2] ARM: dts: stm32: tune the HS USB PHYs on stm32mp15xx-dkx
From: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Date: 2021-10-25 15:18:36
Also in:
linux-arm-kernel, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <amelie.delaunay@foss.st.com> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com> --- 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 899bfe0..48c7a11 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 {
--
2.7.4