AM35x has musb interface (version 1.8) and uses CPPI41 DMA engine. It supports upto 500mA of power in host mode.
Signed-off-by: Ajay Kumar Gupta <[email protected]> --- Created against latest l-o master branch and below patches. [1] AM35xx: Add clock support for new modules on AM35xx [2] OMAP2/3 clock: Extend find_idlest() to pass back idle [3] musb: fix power field to hold all possible values [4] musb: Add extvbus in musb_board_data I am posting musb driver layer platform file seperately to linux-usb list. arch/arm/mach-omap2/board-am3517evm.c | 10 ++++++++ arch/arm/mach-omap2/usb-musb.c | 4 +++ arch/arm/plat-omap/include/plat/usb.h | 38 +++++++++++++++++++++++++++++++++ 3 files changed, 52 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/board-am3517evm.c b/arch/arm/mach-omap2/board-am3517evm.c index aee0a02..805c7ab 100644 --- a/arch/arm/mach-omap2/board-am3517evm.c +++ b/arch/arm/mach-omap2/board-am3517evm.c @@ -273,6 +273,12 @@ 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 struct ehci_hcd_omap_platform_data ehci_pdata __initdata = { .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY, .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY, @@ -286,6 +292,8 @@ static struct ehci_hcd_omap_platform_data ehci_pdata __initdata = { #ifdef CONFIG_OMAP_MUX static struct omap_board_mux board_mux[] __initdata = { + /* USB OTG DRVVBUS offset = 0x212 */ + OMAP3_MUX(CHASSIS_DMAREQ3, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLDOWN), { .reg_offset = OMAP_MUX_TERMINATOR }, }; #else @@ -313,6 +321,8 @@ static void __init am3517_evm_init(void) i2c_register_board_info(1, am3517evm_i2c_boardinfo, ARRAY_SIZE(am3517evm_i2c_boardinfo)); + /* MUSB */ + usb_musb_init(&musb_board_data); } static void __init am3517_evm_map_io(void) diff --git a/arch/arm/mach-omap2/usb-musb.c b/arch/arm/mach-omap2/usb-musb.c index 17726ac..1b08cff 100644 --- a/arch/arm/mach-omap2/usb-musb.c +++ b/arch/arm/mach-omap2/usb-musb.c @@ -28,6 +28,7 @@ #include <mach/hardware.h> #include <mach/irqs.h> +#include <mach/am35xx.h> #include <plat/mux.h> #include <plat/usb.h> @@ -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()) { + 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()) { diff --git a/arch/arm/plat-omap/include/plat/usb.h b/arch/arm/plat-omap/include/plat/usb.h index d82bf77..2df6c70 100644 --- a/arch/arm/plat-omap/include/plat/usb.h +++ b/arch/arm/plat-omap/include/plat/usb.h @@ -168,5 +168,43 @@ void omap_usb_init(struct omap_usb_config *pdata); # define USBT2TLL5PI (1 << 17) # define USB0PUENACTLOI (1 << 16) # define USBSTANDBYCTRL (1 << 15) +/* AM3517 */ +/* USB 2.0 OTG module registers */ +#define USB_REVISION_REG 0x00 +#define USB_CTRL_REG 0x04 +#define USB_STAT_REG 0x08 +#define USB_EMULATION_REG 0x0c +/* 0x10 Reserved */ +#define USB_AUTOREQ_REG 0x14 +#define USB_SRP_FIX_TIME_REG 0x18 +#define USB_TEARDOWN_REG 0x1c +#define EP_INTR_SRC_REG 0x20 +#define EP_INTR_SRC_SET_REG 0x24 +#define EP_INTR_SRC_CLEAR_REG 0x28 +#define EP_INTR_MASK_REG 0x2c +#define EP_INTR_MASK_SET_REG 0x30 +#define EP_INTR_MASK_CLEAR_REG 0x34 +#define EP_INTR_SRC_MASKED_REG 0x38 +#define CORE_INTR_SRC_REG 0x40 +#define CORE_INTR_SRC_SET_REG 0x44 +#define CORE_INTR_SRC_CLEAR_REG 0x48 +#define CORE_INTR_MASK_REG 0x4c +#define CORE_INTR_MASK_SET_REG 0x50 +#define CORE_INTR_MASK_CLEAR_REG 0x54 +#define CORE_INTR_SRC_MASKED_REG 0x58 +/* 0x5c Reserved */ +#define USB_END_OF_INTR_REG 0x60 + +/* Control register bits */ +#define USB_SOFT_RESET_MASK 1 + +/* USB interrupt register bits */ +#define USB_INTR_USB_SHIFT 16 +#define USB_INTR_USB_MASK (0x1ff << USB_INTR_USB_SHIFT) +#define USB_INTR_DRVVBUS 0x100 +#define USB_INTR_RX_SHIFT 16 +#define USB_INTR_TX_SHIFT 0 + +#define USB_MENTOR_CORE_OFFSET 0x400 #endif /* __ASM_ARCH_OMAP_USB_H */ -- 1.6.2.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
