From 71a5c55bfa776b29d11b85e80945b89af06e6546 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beno=C3=AEt=20Th=C3=A9baudeau?=
<benoit.thebaudeau@advansee.com>
Date: Tue, 13 Nov 2012 09:58:12 +0000
Subject: [PATCH] ehci-mxc: Add support for i.MX35
MIME-Version: 1.0
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Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
---
arch/arm/include/asm/arch-mx35/imx-regs.h | 2 +
drivers/usb/host/ehci-mxc.c | 69 +++++++++++++++++++++++
2 files changed, 71 insertions(+)
diff --git a/arch/arm/include/asm/arch-mx35/imx-regs.h b/arch/arm/include/asm/arch-mx35/imx-regs.h
index 7b6475a5ef..18c6816e48 100644
--- a/arch/arm/include/asm/arch-mx35/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx35/imx-regs.h
@@ -84,6 +84,8 @@
#define PWM_BASE_ADDR 0x53FE0000
#define RTIC_BASE_ADDR 0x53FEC000
#define IIM_BASE_ADDR 0x53FF0000
+#define IMX_USB_BASE 0x53FF4000
+#define IMX_USB_PORT_OFFSET 0x400
#define IMX_CCM_BASE CCM_BASE_ADDR
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index 6260a8c939..7c5f71ce86 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -58,6 +58,22 @@
#define MX31_H1_PM_BIT (1 << 8)
#define MX31_H1_DT_BIT (1 << 4)
+#define MX35_OTG_SIC_SHIFT 29
+#define MX35_OTG_SIC_MASK (0x3 << MX35_OTG_SIC_SHIFT)
+#define MX35_OTG_PM_BIT (1 << 24)
+#define MX35_OTG_PP_BIT (1 << 11)
+#define MX35_OTG_OCPOL_BIT (1 << 3)
+
+#define MX35_H1_SIC_SHIFT 21
+#define MX35_H1_SIC_MASK (0x3 << MX35_H1_SIC_SHIFT)
+#define MX35_H1_PP_BIT (1 << 18)
+#define MX35_H1_PM_BIT (1 << 8)
+#define MX35_H1_IPPUE_UP_BIT (1 << 7)
+#define MX35_H1_IPPUE_DOWN_BIT (1 << 6)
+#define MX35_H1_TLL_BIT (1 << 5)
+#define MX35_H1_USBTE_BIT (1 << 4)
+#define MX35_H1_OCPOL_BIT (1 << 2)
+
static int mxc_set_usbcontrol(int port, unsigned int flags)
{
unsigned int v;
@@ -143,6 +159,55 @@ static int mxc_set_usbcontrol(int port, unsigned int flags)
if (!(flags & MXC_EHCI_TTL_ENABLED))
v |= MX31_H2_DT_BIT;
+ break;
+ default:
+ return -EINVAL;
+ }
+#elif defined(CONFIG_MX35)
+ switch (port) {
+ case 0: /* OTG port */
+ v &= ~(MX35_OTG_SIC_MASK | MX35_OTG_PM_BIT | MX35_OTG_PP_BIT |
+ MX35_OTG_OCPOL_BIT);
+ v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX35_OTG_SIC_SHIFT;
+
+ if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+ v |= MX35_OTG_PM_BIT;
+
+ if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
+ v |= MX35_OTG_PP_BIT;
+
+ if (!(flags & MXC_EHCI_OC_PIN_ACTIVE_LOW))
+ v |= MX35_OTG_OCPOL_BIT;
+
+ break;
+ case 1: /* H1 port */
+ v &= ~(MX35_H1_SIC_MASK | MX35_H1_PM_BIT | MX35_H1_PP_BIT |
+ MX35_H1_OCPOL_BIT | MX35_H1_TLL_BIT |
+ MX35_H1_USBTE_BIT | MX35_H1_IPPUE_DOWN_BIT |
+ MX35_H1_IPPUE_UP_BIT);
+ v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX35_H1_SIC_SHIFT;
+
+ if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+ v |= MX35_H1_PM_BIT;
+
+ if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
+ v |= MX35_H1_PP_BIT;
+
+ if (!(flags & MXC_EHCI_OC_PIN_ACTIVE_LOW))
+ v |= MX35_H1_OCPOL_BIT;
+
+ if (!(flags & MXC_EHCI_TTL_ENABLED))
+ v |= MX35_H1_TLL_BIT;
+
+ if (flags & MXC_EHCI_INTERNAL_PHY)
+ v |= MX35_H1_USBTE_BIT;
+
+ if (flags & MXC_EHCI_IPPUE_DOWN)
+ v |= MX35_H1_IPPUE_DOWN_BIT;
+
+ if (flags & MXC_EHCI_IPPUE_UP)
+ v |= MX35_H1_IPPUE_UP_BIT;
+
break;
default:
return -EINVAL;
@@ -176,6 +241,10 @@ int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
setbits_le32(&ehci->usbmode, CM_HOST);
__raw_writel(CONFIG_MXC_USB_PORTSC, &ehci->portsc);
mxc_set_usbcontrol(CONFIG_MXC_USB_PORT, CONFIG_MXC_USB_FLAGS);
+#ifdef CONFIG_MX35
+ /* Workaround for ENGcm11601 */
+ __raw_writel(0, &ehci->sbuscfg);
+#endif
udelay(10000);