diff options
| author | Benoît Thébaudeau <benoit.thebaudeau@advansee.com> | 2012-06-28 16:59:23 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-07-09 10:32:39 +0200 |
| commit | 5cfe82c674c77c21274769643c0b92dd7bb4cb05 (patch) | |
| tree | 2dce3f04a0ffd19a15056e9be49243f4baafef47 /arch/arm/mach-imx/ehci-imx5.c | |
| parent | c6fd6d113df3dd433d31001d173789464427ad22 (diff) | |
ARM: imx: make ehci power/oc polarities configurable
Make ehci power and overcurrent polarities configurable. If not set, these new
configurartions keep the default register values so that existing board files
do not have to be changed.
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: <linux-arm-kernel@lists.infradead.org>
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-imx/ehci-imx5.c')
| -rw-r--r-- | arch/arm/mach-imx/ehci-imx5.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/ehci-imx5.c b/arch/arm/mach-imx/ehci-imx5.c index c17fa131728b..49e3b342758a 100644 --- a/arch/arm/mach-imx/ehci-imx5.c +++ b/arch/arm/mach-imx/ehci-imx5.c @@ -28,11 +28,14 @@ #define MXC_OTG_UCTRL_OPM_BIT (1 << 24) /* OTG power mask */ #define MXC_H1_UCTRL_H1UIE_BIT (1 << 12) /* Host1 ULPI interrupt enable */ #define MXC_H1_UCTRL_H1WIE_BIT (1 << 11) /* HOST1 wakeup intr enable */ -#define MXC_H1_UCTRL_H1PM_BIT (1 << 8) /* HOST1 power mask */ +#define MXC_H1_UCTRL_H1PM_BIT (1 << 8) /* HOST1 power mask */ /* USB_PHY_CTRL_FUNC */ +#define MXC_OTG_PHYCTRL_OC_POL_BIT (1 << 9) /* OTG Polarity of Overcurrent */ #define MXC_OTG_PHYCTRL_OC_DIS_BIT (1 << 8) /* OTG Disable Overcurrent Event */ +#define MXC_H1_OC_POL_BIT (1 << 6) /* UH1 Polarity of Overcurrent */ #define MXC_H1_OC_DIS_BIT (1 << 5) /* UH1 Disable Overcurrent Event */ +#define MXC_OTG_PHYCTRL_PWR_POL_BIT (1 << 3) /* OTG Power Pin Polarity */ /* USBH2CTRL */ #define MXC_H2_UCTRL_H2UIE_BIT (1 << 8) @@ -80,6 +83,10 @@ int mx51_initialize_usb_hw(int port, unsigned int flags) if (flags & MXC_EHCI_INTERNAL_PHY) { v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET); + if (flags & MXC_EHCI_OC_PIN_ACTIVE_LOW) + v |= MXC_OTG_PHYCTRL_OC_POL_BIT; + else + v &= ~MXC_OTG_PHYCTRL_OC_POL_BIT; if (flags & MXC_EHCI_POWER_PINS_ENABLED) { /* OC/USBPWR is not used */ v |= MXC_OTG_PHYCTRL_OC_DIS_BIT; @@ -87,6 +94,10 @@ int mx51_initialize_usb_hw(int port, unsigned int flags) /* OC/USBPWR is used */ v &= ~MXC_OTG_PHYCTRL_OC_DIS_BIT; } + if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH) + v |= MXC_OTG_PHYCTRL_PWR_POL_BIT; + else + v &= ~MXC_OTG_PHYCTRL_PWR_POL_BIT; __raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET); v = __raw_readl(usbother_base + MXC_USBCTRL_OFFSET); @@ -119,6 +130,10 @@ int mx51_initialize_usb_hw(int port, unsigned int flags) __raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET); v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET); + if (flags & MXC_EHCI_OC_PIN_ACTIVE_LOW) + v |= MXC_H1_OC_POL_BIT; + else + v &= ~MXC_H1_OC_POL_BIT; if (flags & MXC_EHCI_POWER_PINS_ENABLED) v &= ~MXC_H1_OC_DIS_BIT; /* OC is used */ else |