x86: ivybridge: Drop special EHCI init

This is not needed. On reset wake-on-disconnect is already set. It may a
problem during a soft reset or resume, but for now it does not seem
important. Also drop the command register update since PCI auto-config
does it for us.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

arch/x86/cpu/ivybridge/Makefile

@@ -17,5 +17,4 @@ obj-y += northbridge.o
 obj-y += report_platform.o
 obj-y += sata.o
 obj-y += sdram.o
-obj-y += usb_ehci.o
 obj-y += usb_xhci.o

arch/x86/cpu/ivybridge/bd82x6x.c

@@ -159,9 +159,6 @@ static int bd82x6x_probe(struct udevice *dev)
 	/* Cause the SATA device to do its init */
 	uclass_first_device(UCLASS_DISK, &dev);
 
-	bd82x6x_usb_ehci_init(PCH_EHCI1_DEV);
-	bd82x6x_usb_ehci_init(PCH_EHCI2_DEV);
-
 	gma_node = fdtdec_next_compatible(blob, 0, COMPAT_INTEL_GMA);
 	if (gma_node < 0) {
 		debug("%s: Cannot find GMA node\n", __func__);

arch/x86/cpu/ivybridge/usb_ehci.c

@@ -1,29 +0,0 @@
-/*
- * From Coreboot
- * Copyright (C) 2008-2009 coresystems GmbH
- *
- * SPDX-License-Identifier:	GPL-2.0
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/pci.h>
-#include <asm/arch/pch.h>
-
-void bd82x6x_usb_ehci_init(pci_dev_t dev)
-{
-	u32 reg32;
-
-	/* Disable Wake on Disconnect in RMH */
-	reg32 = readl(RCB_REG(0x35b0));
-	reg32 |= 0x22;
-	writel(reg32, RCB_REG(0x35b0));
-
-	debug("EHCI: Setting up controller.. ");
-	reg32 = x86_pci_read_config32(dev, PCI_COMMAND);
-	reg32 |= PCI_COMMAND_MASTER;
-	/* reg32 |= PCI_COMMAND_SERR; */
-	x86_pci_write_config32(dev, PCI_COMMAND, reg32);
-
-	debug("done.\n");
-}

arch/x86/dts/chromebook_link.dts

@@ -12,6 +12,8 @@
 
 	aliases {
 		spi0 = "/pci/pch/spi";
+		usb0 = &usb_0;
+		usb1 = &usb_1;
 	};
 
 	config {
@@ -226,6 +228,16 @@
 			u-boot,dm-pre-reloc;
 		};
 
+		usb_1: usb@1a,0 {
+			reg = <0x0000d000 0 0 0 0>;
+			compatible = "ehci-pci";
+		};
+
+		usb_0: usb@1d,0 {
+			reg = <0x0000e800 0 0 0 0>;
+			compatible = "ehci-pci";
+		};
+
 		pch@1f,0 {
 			reg = <0x0000f800 0 0 0 0>;
 			compatible = "intel,bd82x6x", "intel,pch9";

arch/x86/include/asm/arch-ivybridge/bd82x6x.h

@@ -7,7 +7,6 @@
 #ifndef _ASM_ARCH_BD82X6X_H
 #define _ASM_ARCH_BD82X6X_H
 
-void bd82x6x_usb_ehci_init(pci_dev_t dev);
 void bd82x6x_usb_xhci_init(pci_dev_t dev);
 int gma_func0_init(struct udevice *dev, const void *blob, int node);