[PATCH v5 7/7] arm64: dts: ti: k3-j722s: Enable PCIe and USB support on J722S-EVM

Siddharth Vadapalli
2024-06-04T08:53:36Z

Enable PCIe0 instance of PCIe in Root Complex mode of operation with Lane 0
of the SERDES1 instance of SERDES. Also enable USB0 instance of USB to
interface with the Type-C port via the USB hub, by configuring the pin P05
of the GPIO expander on the EVM. Enable USB1 instance of USB in SuperSpeed
mode of operation with Lane 0 of the SERDES0 instance of SERDES.

Co-developed-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
Signed-off-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
---
v4:
https://lore.kernel.org/r/20240601121554.2860403-8-s-vadapalli@ti.com/
Changes since v4:
- Based on Andrew's feedback at:
https://lore.kernel.org/r/183a9d15-939e-433b-84ba-8a64eb8ef3ec@ti.com/
the `status = "okay";` line has been moved to the end of the
`pcie0_rc` node referenced in k3-j722s-evm.dts following the updated
ordering rules.
- The SERDES1 node has been enabled in the k3-j722s-evm.dts file since
it has been disabled in the k3-j722s-main.dtsi file in the previous
patch.

arch/arm64/boot/dts/ti/k3-j722s-evm.dts | 73 +++++++++++++++++++++++++
1 file changed, 73 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
index bf3c246d13d1..253b02f0437d 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
@@ -9,7 +9,9 @@
/dts-v1/;

#include <dt-bindings/net/ti-dp83867.h>
+#include <dt-bindings/phy/phy.h>
#include "k3-j722s.dtsi"
+#include "k3-serdes.h"

/ {
compatible = "ti,j722s-evm", "ti,j722s";
@@ -202,6 +204,12 @@ J722S_IOPAD(0x0130, PIN_OUTPUT, 0) /* (AG26) RGMII1_TXC */
J722S_IOPAD(0x012c, PIN_OUTPUT, 0) /* (AF25) RGMII1_TX_CTL */
>;
};
+
+ main_usb1_pins_default: main-usb1-default-pins {
+ pinctrl-single,pins = <
+ J722S_IOPAD(0x0258, PIN_INPUT, 0) /* (B27) USB1_DRVVBUS */
+ >;
+ };
};

&cpsw3g {
@@ -301,6 +309,13 @@ exp1: gpio@23 {
"PCIe0_1L_RC_RSTz", "PCIe0_1L_PRSNT#",
"ENET1_EXP_SPARE2", "ENET1_EXP_PWRDN",
"PD_I2ENET1_I2CMUX_SELC_IRQ", "ENET1_EXP_RESETZ";
+
+ p05-hog {
+ /* P05 - USB2.0_MUX_SEL */
+ gpio-hog;
+ gpios = <5 GPIO_ACTIVE_HIGH>;
+ output-high;
+ };
};
};

@@ -384,3 +399,61 @@ &sdhci1 {
status = "okay";
bootph-all;
};
+
+&serdes_ln_ctrl {
+ idle-states = <J722S_SERDES0_LANE0_USB>,
+ <J722S_SERDES1_LANE0_PCIE0_LANE0>;
+};
+
+&serdes0 {
+ status = "okay";
+ serdes0_usb_link: phy@0 {
+ reg = <0>;
+ cdns,num-lanes = <1>;
+ #phy-cells = <0>;
+ cdns,phy-type = <PHY_TYPE_USB3>;
+ resets = <&serdes_wiz0 1>;
+ };
+};
+
+&serdes1 {
+ status = "okay";
+ serdes1_pcie_link: phy@0 {
+ reg = <0>;
+ cdns,num-lanes = <1>;
+ #phy-cells = <0>;
+ cdns,phy-type = <PHY_TYPE_PCIE>;
+ resets = <&serdes_wiz1 1>;
+ };
+};
+
+&pcie0_rc {
+ reset-gpios = <&exp1 18 GPIO_ACTIVE_HIGH>;
+ phys = <&serdes1_pcie_link>;
+ phy-names = "pcie-phy";
+ status = "okay";
+};
+
+&usbss0 {
+ ti,vbus-divider;
+ status = "okay";
+};
+
+&usb0 {
+ dr_mode = "otg";
+ usb-role-switch;
+};
+
+&usbss1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_usb1_pins_default>;
+ ti,vbus-divider;
+ status = "okay";
+};
+
+&usb1 {
+ dr_mode = "host";
+ maximum-speed = "super-speed";
+ phys = <&serdes0_usb_link>;
+ phy-names = "cdns3,usb3-phy";
+};
--
2.40.1