From 3a0d30bcdfa73bd865f29899eb4bf29b58c4f54a Mon Sep 17 00:00:00 2001 From: Ajay Kumar Gupta Date: Tue, 19 Oct 2010 10:08:11 +0300 Subject: 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 Acked-by: Tony Lindgren Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-omap@vger.kernel.org Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-omap2/board-am3517evm.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'arch/arm/mach-omap2/board-am3517evm.c') diff --git a/arch/arm/mach-omap2/board-am3517evm.c b/arch/arm/mach-omap2/board-am3517evm.c index 4d0f58592864..9ac9de6bb970 100644 --- a/arch/arm/mach-omap2/board-am3517evm.c +++ b/arch/arm/mach-omap2/board-am3517evm.c @@ -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") -- cgit v1.2.2