pinmux config for second USB3 (USB_SS2)

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX1
21

Here is the patch I ended up with for r24.1 code base:

From a87ee8f7ce3c36d2d58f6a35b6a74a67e555d2c8 Mon Sep 17 00:00:00 2001
From: "dmitri.khokhlov" <dmitri.khokhlov@liquidr.com>
Date: Thu, 5 May 2016 10:14:59 -0700
Subject: [PATCH] kernel: usb3: enable second USB3 port

Signed-off-by: dmitri.khokhlov <dmitri.khokhlov@liquidr.com>
---
 arch/arm64/boot/dts/tegra210-jetson-cv-base-p2597-2180-a00.dts | 10 +++++-----
 drivers/usb/host/xhci-tegra.c                                  |  4 ++++
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/arch/arm64/boot/dts/tegra210-jetson-cv-base-p2597-2180-a00.dts b/arch/arm64/boot/dts/tegra210-jetson-cv-base-p2597-2180-a00.dts
index 1f0e05a..4d223b1 100644
--- a/arch/arm64/boot/dts/tegra210-jetson-cv-base-p2597-2180-a00.dts
+++ b/arch/arm64/boot/dts/tegra210-jetson-cv-base-p2597-2180-a00.dts
@@ -194,7 +194,7 @@

        pcie-controller {
                nvidia,wake-gpio = <&gpio TEGRA_GPIO(A, 2) 0>;
-               nvidia,lane-map = <0x14>;
+               nvidia,lane-map = <0x12>;
                dvdd-pex-pll-supply = <&max77620_ldo1>;
                l0-dvddio-pex-supply = <&max77620_ldo1>;
                l1-dvddio-pex-supply = <&max77620_ldo1>;
@@ -430,9 +430,9 @@
        };

        xusb_pad_ctl: xusb_padctl { /* Put common control config here */
-               nvidia,ss_portmap = <0x21>;
-               nvidia,lane_owner = <0xff56>; /* Use 0xF to disable lane assign */
-               nvidia,lane-map = <0x14>;
+               nvidia,ss_portmap = <0x221>;
+               nvidia,lane_owner = <0xf356>; /* Use 0xF to disable lane assign */
+               nvidia,lane-map = <0x12>;
                nvidia,enable-sata-port;
                status = "okay";
        };
@@ -442,7 +442,7 @@
                /* nvidia,gpio_controls_muxed_ss_lanes; */
                nvidia,gpio_ss1_sata = <0>;
                nvidia,ulpicap = <0>; /* No ulpi support. can we remove */
-               nvidia,portmap = <0x0e03>;
+               nvidia,portmap = <0x0e07>;
                nvidia,common_padctl = <&xusb_pad_ctl>;
                status = "okay";
        };
diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
index 52c5144..3ed8c7a 100644
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -5164,6 +5164,10 @@ static int tegra_xhci_probe(struct platform_device *pdev)
        u32 port;
 #endif

+    // enable USB_SS2
+    ret = gpio_request(66, "gps_en");
+    gpio_direction_output(66, 0);
+
        if (tegra_platform_is_fpga())
                xusb_tegra_program_registers();

--
1.9.1
22

Hello DmitriK,

By using the patch you provided,
it still does not work for second USB3 port.
The second USB3 show USB2.0.
Would you help to share the kernel image file: “Image” and “tegra210-jetson-tx1-p2597-2180-a01-devkit.dtb” for me to test?
Thanks a lot!

Isa