On Fri, 2005-05-06 at 16:27 +0200, Rodolfo Giometti wrote: > On Thu, May 05, 2005 at 09:42:41AM -0700, Pete Popov wrote: > > It sounds like this is a custom Au1100 based board? What boot code are > > you running? I'm guessing the SOC isn't setup correctly or you have a > > HW problem. > > Yes, you was right, I missing to setup USB clock... I just added this > code to the board init function (board_setup() function) and now USB > works: > > #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_AU1X00_USB_DEVICE) > /* zero and disable FREQ2 */ > sys_freqctrl = au_readl(SYS_FREQCTRL0); > sys_freqctrl &= ~0xFFF00000; > au_writel(sys_freqctrl, SYS_FREQCTRL0); > > /* zero and disable USBH/USBD/IrDA clock */ > sys_clksrc = au_readl(SYS_CLKSRC); > sys_clksrc &= ~0x0000001F; > au_writel(sys_clksrc, SYS_CLKSRC); > > sys_freqctrl = au_readl(SYS_FREQCTRL0); > sys_freqctrl &= ~0xFFF00000; > > sys_clksrc = au_readl(SYS_CLKSRC); > sys_clksrc &= ~0x0000001F; > > /* FREQ2 = aux/2 = 48 MHz */ > sys_freqctrl |= ((0<<22) | (1<<21) | (1<<20)); > au_writel(sys_freqctrl, SYS_FREQCTRL0); > > /* Route 48MHz FREQ2 into USBH/USBD/IrDA */ > sys_clksrc |= ((4<<2) | (0<<1) | 0 ); > au_writel(sys_clksrc, SYS_CLKSRC); > > /* setup the static bus controller */ > au_writel(0x00000002, MEM_STCFG3); /* type = PCMCIA */ > au_writel(0x280E3D07, MEM_STTIME3); /* 250ns cycle time */ > au_writel(0x10000000, MEM_STADDR3); /* any PCMCIA select */ > > /* Get USB Functionality pin state (device vs host drive pins) */ > pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000); > #ifndef CONFIG_AU1X00_USB_DEVICE > /* 2nd USB port is USB host */ > pin_func |= 0x8000; > #endif > au_writel(pin_func, SYS_PINFUNC); > #endif /* defined (CONFIG_USB_OHCI_HCD) || defined (CONFIG_AU1X00_USB_DEVICE) */ > > But don't you think is better to put this code into USB driver (file > ohci-au1xxx.c) during probing stage? In this manner each platforms may > don't worry about clock initialization... Seems too board specific since the clocks can be routed differently on each board. Pete
