[PATCH v3] arm64: dts: ti: k3-am69-sk: Add USB SuperSpeed support
From: Enric Balletbo i Serra <hidden>
Date: 2025-01-08 08:59:56
From: Dasnavis Sabiya <redacted> AM69 SK board has two stacked USB3 connectors: 1. USB3 (Stacked TypeA + TypeC) 2. USB3 TypeA Hub interfaced through TUSB8041. The board uses SERDES0 Lane 3 for USB3 IP. So update the SerDes lane info for PCIe and USB. Add the pin mux data and enable USB 3.0 support with its respective SERDES settings. Signed-off-by: Dasnavis Sabiya <redacted> Signed-off-by: Enric Balletbo i Serra <redacted> Reviewed-by: Roger Quadros <rogerq@kernel.org> --- I've been carrying this patch for quite long time in my builds to have support for USB on my AM69-SK board without problems. For some reason this patch was never send to upstream or I couldn't find it. So I took the opportunity, now that I rebased my build, to send upstream. I have maintained the original author of the downstream patch as is basically his work. --- Changes in v3: - Set offset address in lower case for TIMER_IO1.USB0_DRVVBUS pin - Link to v2: https://lore.kernel.org/r/20241204-am69sk-dt-usb-v2-1-d59b2ac45c6e@redhat.com Changes in v2: - Set dr_mode to otg to fully describe the hardware proprieties - Link to v1: https://lore.kernel.org/r/20241126-am69sk-dt-usb-v1-1-aa55aed7b89e@redhat.com --- arch/arm64/boot/dts/ti/k3-am69-sk.dts | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am69-sk.dts b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
index 1e36965a14032ca07143230855e04b9549f1d0d1..734d81019d286f233ac03fbaad9e80a0f7ad3ae3 100644
--- a/arch/arm64/boot/dts/ti/k3-am69-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am69-sk.dts@@ -484,6 +484,12 @@ J784S4_IOPAD(0x09C, PIN_OUTPUT, 0) /* (AF35) MCAN7_TX */ >; }; + main_usbss0_pins_default: main-usbss0-default-pins { + pinctrl-single,pins = < + J784S4_IOPAD(0x0ec, PIN_OUTPUT, 6) /* (AN37) TIMER_IO1.USB0_DRVVBUS */ + >; + }; + }; &wkup_pmx0 {
@@ -1299,6 +1305,14 @@ serdes0_pcie_link: phy@0 { cdns,phy-type = <PHY_TYPE_PCIE>; resets = <&serdes_wiz0 1>, <&serdes_wiz0 2>, <&serdes_wiz0 3>; }; + + serdes0_usb_link: phy@3 { + reg = <3>; + cdns,num-lanes = <1>; + #phy-cells = <0>; + cdns,phy-type = <PHY_TYPE_USB3>; + resets = <&serdes_wiz0 4>; + }; }; &serdes_wiz1 {
@@ -1339,3 +1353,22 @@ &pcie3_rc { phy-names = "pcie-phy"; num-lanes = <1>; }; + +&usb_serdes_mux { + idle-states = <0>; /* USB0 to SERDES0 */ +}; + +&usbss0 { + status = "okay"; + pinctrl-0 = <&main_usbss0_pins_default>; + pinctrl-names = "default"; + ti,vbus-divider; +}; + +&usb0 { + status = "okay"; + dr_mode = "otg"; + maximum-speed = "super-speed"; + phys = <&serdes0_usb_link>; + phy-names = "cdns3,usb3-phy"; +};
--- base-commit: 7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5 change-id: 20241126-am69sk-dt-usb-89180ef58f8d Best regards, -- Enric Balletbo i Serra [off-list ref]