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USB: AM35x: Add musb support 

AM35x has musb interface (version 1.8) and uses CPPI41 DMA engine.
It has USB phy built inside the IP itself.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Ajay Kumar Gupta 2010-10-19 10:08:11 +03:00 committed by Greg Kroah-Hartman
parent 436a389096
commit 3a0d30bcdf
3 changed files with 55 additions and 0 deletions
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30
arch/arm/mach-omap2/board-am3517evm.c
View File

@ -375,6 +375,31 @@ static void __init am3517_evm_init_irq(void)
omap_gpio_init();
}
static struct omap_musb_board_data musb_board_data = {
.interface_type = MUSB_INTERFACE_ULPI,
.mode = MUSB_OTG,
.power = 500,
};
static __init void am3517_evm_musb_init(void)
{
u32 devconf2;
/*
* Set up USB clock/mode in the DEVCONF2 register.
*/
devconf2 = omap_ctrl_readl(AM35XX_CONTROL_DEVCONF2);
/* USB2.0 PHY reference clock is 13 MHz */
devconf2 &= ~(CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE);
devconf2 |= CONF2_REFFREQ_13MHZ | CONF2_SESENDEN | CONF2_VBDTCTEN
| CONF2_DATPOL;
omap_ctrl_writel(devconf2, AM35XX_CONTROL_DEVCONF2);
usb_musb_init(&musb_board_data);
}
static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
.port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
#if defined(CONFIG_PANEL_SHARP_LQ043T1DG01) || \
@ -393,6 +418,8 @@ static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
/* USB OTG DRVVBUS offset = 0x212 */
OMAP3_MUX(SAD2D_MCAD23, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLDOWN),
{ .reg_offset = OMAP_MUX_TERMINATOR },
};
#else
@ -459,6 +486,9 @@ static void __init am3517_evm_init(void)
ARRAY_SIZE(am3517evm_i2c1_boardinfo));
/*Ethernet*/
am3517_evm_ethernet_init(&am3517_evm_emac_pdata);
/* MUSB */
am3517_evm_musb_init();
}
MACHINE_START(OMAP3517EVM, "OMAP3517/AM3517 EVM")

4
arch/arm/mach-omap2/usb-musb.c
View File

@ -28,6 +28,7 @@
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <mach/am35xx.h>
#include <plat/usb.h>
#ifdef CONFIG_USB_MUSB_SOC
@ -89,6 +90,9 @@ void __init usb_musb_init(struct omap_musb_board_data *board_data)
{
if (cpu_is_omap243x()) {
musb_resources[0].start = OMAP243X_HS_BASE;
} else if (cpu_is_omap3517() || cpu_is_omap3505()) {
musb_resources[0].start = AM35XX_IPSS_USBOTGSS_BASE;
musb_resources[1].start = INT_35XX_USBOTG_IRQ;
} else if (cpu_is_omap34xx()) {
musb_resources[0].start = OMAP34XX_HSUSB_OTG_BASE;
} else if (cpu_is_omap44xx()) {

21
arch/arm/plat-omap/include/plat/usb.h
View File

@ -218,6 +218,27 @@ static inline omap2_usbfs_init(struct omap_usb_config *pdata)
# define USBT2TLL5PI (1 << 17)
# define USB0PUENACTLOI (1 << 16)
# define USBSTANDBYCTRL (1 << 15)
/* AM35x */
/* USB 2.0 PHY Control */
#define CONF2_PHY_GPIOMODE (1 << 23)
#define CONF2_OTGMODE (3 << 14)
#define CONF2_NO_OVERRIDE (0 << 14)
#define CONF2_FORCE_HOST (1 << 14)
#define CONF2_FORCE_DEVICE (2 << 14)
#define CONF2_FORCE_HOST_VBUS_LOW (3 << 14)
#define CONF2_SESENDEN (1 << 13)
#define CONF2_VBDTCTEN (1 << 12)
#define CONF2_REFFREQ_24MHZ (2 << 8)
#define CONF2_REFFREQ_26MHZ (7 << 8)
#define CONF2_REFFREQ_13MHZ (6 << 8)
#define CONF2_REFFREQ (0xf << 8)
#define CONF2_PHYCLKGD (1 << 7)
#define CONF2_VBUSSENSE (1 << 6)
#define CONF2_PHY_PLLON (1 << 5)
#define CONF2_RESET (1 << 4)
#define CONF2_PHYPWRDN (1 << 3)
#define CONF2_OTGPWRDN (1 << 2)
#define CONF2_DATPOL (1 << 1)
#if defined(CONFIG_ARCH_OMAP1) && defined(CONFIG_USB)
u32 omap1_usb0_init(unsigned nwires, unsigned is_device);