Add USB-C controller (fusb302), which will be used by U-Boot to initialize USB-PD. This is needed, because USB-PD communication must happen within 5 seconds after the USB-C connector got plugged. On my Rock 5B it often takes 5 seconds to jump to the Linux binary, so it must happen before Linux is initialized.
This adds the DT node to the U-Boot specific file, since the Linux kernel DT currently does not describe it to avoid a system reset. The plan is to add it to the Linux DT with status = 'fail' and then let U-Boot mark it as status = 'okay' if it properly dealt with early USB-PD initialization. Until the Kernel DT has the node, let's add it in U-Boot to get things going.
Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com --- arch/arm/dts/rk3588-rock-5b-u-boot.dtsi | 28 +++++++++++++++++++++++++ 1 file changed, 28 insertions(+)
diff --git a/arch/arm/dts/rk3588-rock-5b-u-boot.dtsi b/arch/arm/dts/rk3588-rock-5b-u-boot.dtsi index 8e318e624a85..e93795359ece 100644 --- a/arch/arm/dts/rk3588-rock-5b-u-boot.dtsi +++ b/arch/arm/dts/rk3588-rock-5b-u-boot.dtsi @@ -3,6 +3,7 @@ * Copyright (c) 2023 Collabora Ltd. */
+#include <dt-bindings/usb/pd.h> #include "rk3588-u-boot.dtsi"
&fspim2_pins { @@ -65,3 +66,30 @@ dr_mode = "host"; status = "okay"; }; + +&i2c4 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c4m1_xfer>; + status = "okay"; + + usbc0: usb-typec@22 { + compatible = "fcs,fusb302"; + reg = <0x22>; + interrupt-parent = <&gpio3>; + interrupts = <RK_PB4 IRQ_TYPE_LEVEL_LOW>; + pinctrl-names = "default"; + status = "okay"; + + usb_con: connector { + compatible = "usb-c-connector"; + label = "USB-C"; + data-role = "dual"; + power-role = "sink"; + try-power-role = "sink"; + op-sink-microwatt = <1000000>; + sink-pdos = + <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)>, + <PDO_VAR(5000, 20000, 5000)>; + }; + }; +};