From 1f4e25780a827de9526b5f60b8a574b1e4f45b9c Mon Sep 17 00:00:00 2001
From: Stefan Roese <sr@denx.de>
Date: Tue, 18 Jul 2017 14:10:49 +0200
Subject: x86: dfi-bt700: Add xHCI USB support

Change from EHCI to xHCI on the DFI BayTrail SoM.

The xHCI USB hub is connected to an GPIO on the DFI BayTrail SoM. For
correct operation, it needs to get reset upon power-up. Otherwise it
may happen that the hub is not detected after a software reboot. This
patch also configures this GPIO in the dts for correct operation.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
 arch/x86/dts/dfi-bt700.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'arch/x86/dts')

diff --git a/arch/x86/dts/dfi-bt700.dtsi b/arch/x86/dts/dfi-bt700.dtsi
index 04aa95ad52..b62e00ff1f 100644
--- a/arch/x86/dts/dfi-bt700.dtsi
+++ b/arch/x86/dts/dfi-bt700.dtsi
@@ -47,6 +47,15 @@
 			pad-offset = <0x3a0>;
 			mode-func = <1>;
 		};
+
+		xhci_hub_reset: usb_ulpi_stp@0 {
+			gpio-offset = <0xa0 10>;
+			pad-offset = <0x23b0>;
+			mode-func = <0>;
+			mode-gpio;
+			output-value = <1>;
+			direction = <PIN_OUTPUT>;
+		};
 	};
 
 	chosen {
@@ -261,6 +270,9 @@
 		fsp,enable-spi;
 		fsp,enable-sata;
 		fsp,sata-mode = <SATA_MODE_AHCI>;
+#ifdef CONFIG_USB_XHCI_HCD
+		fsp,enable-xhci;
+#endif
 		fsp,lpe-mode = <LPE_MODE_PCI>;
 		fsp,lpss-sio-mode = <LPSS_SIO_MODE_PCI>;
 		fsp,enable-dma0;
-- 
cgit