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usb: ehci: exynos: set/reset hsic phys 

The controller has 3 ports. The port0 is for USB 2.0 Phy, port1 and port2
are for HSIC phys. The usb 2.0 phy is already being setup. This patch
sets up the hsic phys.

Signed-off-by: Inderpal Singh <inderpal.singh@linaro.org>
This commit is contained in:
Inderpal Singh 2014-01-08 09:19:56 +05:30 committed by Marek Vasut
parent dcad280056
commit 16f9480dfc
2 changed files with 53 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
arch/arm/include/asm/arch-exynos/ehci.h
View File

@ -29,6 +29,20 @@
#define EHCICTRL_ENAINCR8 (1 << 27)
#define EHCICTRL_ENAINCR16 (1 << 26)
#define HSIC_CTRL_REFCLKSEL (0x2)
#define HSIC_CTRL_REFCLKSEL_MASK (0x3)
#define HSIC_CTRL_REFCLKSEL_SHIFT (23)
#define HSIC_CTRL_REFCLKDIV_12 (0x24)
#define HSIC_CTRL_REFCLKDIV_MASK (0x7f)
#define HSIC_CTRL_REFCLKDIV_SHIFT (16)
#define HSIC_CTRL_SIDDQ (0x1 << 6)
#define HSIC_CTRL_FORCESLEEP (0x1 << 5)
#define HSIC_CTRL_FORCESUSPEND (0x1 << 4)
#define HSIC_CTRL_UTMISWRST (0x1 << 2)
#define HSIC_CTRL_PHYSWRST (0x1 << 0)
/* Register map for PHY control */
struct exynos_usb_phy {
unsigned int usbphyctrl0;

39
drivers/usb/host/ehci-exynos.c
View File

@ -88,6 +88,8 @@ static int exynos_usb_parse_dt(const void *blob, struct exynos_ehci *exynos)
/* Setup the EHCI host controller. */
static void setup_usb_phy(struct exynos_usb_phy *usb)
{
u32 hsic_ctrl;
set_usbhost_mode(USB20_PHY_CFG_HOST_LINK_EN);
set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_EN);
@ -112,6 +114,32 @@ static void setup_usb_phy(struct exynos_usb_phy *usb)
clrbits_le32(&usb->usbphyctrl0,
HOST_CTRL0_LINKSWRST |
HOST_CTRL0_UTMISWRST);
/* HSIC Phy Setting */
hsic_ctrl = (HSIC_CTRL_FORCESUSPEND |
HSIC_CTRL_FORCESLEEP |
HSIC_CTRL_SIDDQ);
clrbits_le32(&usb->hsicphyctrl1, hsic_ctrl);
clrbits_le32(&usb->hsicphyctrl2, hsic_ctrl);
hsic_ctrl = (((HSIC_CTRL_REFCLKDIV_12 & HSIC_CTRL_REFCLKDIV_MASK)
<< HSIC_CTRL_REFCLKDIV_SHIFT)
| ((HSIC_CTRL_REFCLKSEL & HSIC_CTRL_REFCLKSEL_MASK)
<< HSIC_CTRL_REFCLKSEL_SHIFT)
| HSIC_CTRL_UTMISWRST);
setbits_le32(&usb->hsicphyctrl1, hsic_ctrl);
setbits_le32(&usb->hsicphyctrl2, hsic_ctrl);
udelay(10);
clrbits_le32(&usb->hsicphyctrl1, HSIC_CTRL_PHYSWRST |
HSIC_CTRL_UTMISWRST);
clrbits_le32(&usb->hsicphyctrl2, HSIC_CTRL_PHYSWRST |
HSIC_CTRL_UTMISWRST);
udelay(20);
/* EHCI Ctrl setting */
@ -125,6 +153,8 @@ static void setup_usb_phy(struct exynos_usb_phy *usb)
/* Reset the EHCI host controller. */
static void reset_usb_phy(struct exynos_usb_phy *usb)
{
u32 hsic_ctrl;
/* HOST_PHY reset */
setbits_le32(&usb->usbphyctrl0,
HOST_CTRL0_PHYSWRST |
@ -133,6 +163,15 @@ static void reset_usb_phy(struct exynos_usb_phy *usb)
HOST_CTRL0_FORCESUSPEND |
HOST_CTRL0_FORCESLEEP);
/* HSIC Phy reset */
hsic_ctrl = (HSIC_CTRL_FORCESUSPEND |
HSIC_CTRL_FORCESLEEP |
HSIC_CTRL_SIDDQ |
HSIC_CTRL_PHYSWRST);
setbits_le32(&usb->hsicphyctrl1, hsic_ctrl);
setbits_le32(&usb->hsicphyctrl2, hsic_ctrl);
set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_DISABLE);
}