Hi,
I've been trying to bring up a dwc3 usb controller included in 32-bit MIPS chip.
Usb is the one port usb2.0 host module, compliant with xHCI Revision 1.0, UTMI+
Low Pin interface (ULPI) Revision 1.1 and AMBA AXI Protocol specification.
g_snpsid register reports 0x5533290a revision.
It's verified, that linux kernel support is ok, usb is fully functional.
axi {
<...>
usb@1F04D050 {
compatible = "be,baikal-dwc3";
reg = <0x1f04d050 0x4>;
interrupts = <0x0 0x45 0x4>;
#address-cells = <0x1>;
#size-cells = <0x1>;
clocks = <0xf 0x0>;
clock-names = "usb";
ranges;
status = "okay";
dwc3@1F100000 {
compatible = "snps,dwc3", "synopsys,dwc3",
"generic-xhci";
reg = <0x1f100000 0x10000>;
interrupts = <0x0 0x44 0x4>;
dr_mode = "host";
tx-fifo-resize;
maximum-speed = "high-speed";
};
};
};
whereas in u-boot 'usb start' fails on hub initialization (as I can see):
Any ideas why this could happen?.. Any direction where to look at?
Any suggestions will be greatly appreciated.
# usb start
(Re)start USB...
USB0: dwc3_reg->g_snpsid: 0x5533290a
Register 1000140 NbrPorts 1
Starting the controller
USB XHCI 1.00
scanning bus 0 for devices... New Device 0
set address 1
usb_control_msg: request: 0x5, requesttype: 0x0, value 0x1 index 0x0 length 0x0
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x100 index 0x0 length
0x12
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x200 index 0x0 length
0x9
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x200 index 0x0 length
0x1F
get_conf_no 0 Result 25, wLength 31
if 0, ep 0
##EP epmaxpacketin[1] = 8
set configuration 1
usb_control_msg: request: 0x9, requesttype: 0x0, value 0x1 index 0x0 length 0x0
new device strings: Mfr=1, Product=2, SerialNumber=0
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x300 index 0x0 length
0xFF
USB device number 1 default language ID 0x409
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x301 index 0x409
length 0xFF
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x302 index 0x409
length 0xFF
Manufacturer U-Boot
Product XHCI Host Controller
SerialNumber
USB hub found
usb_control_msg: request: 0x6, requesttype: 0xA0, value 0x2A00 index 0x0 length
0x4
usb_control_msg: request: 0x6, requesttype: 0xA0, value 0x2A00 index 0x0 length
0xC
1 ports detected
ganged power switching
standalone hub
individual port over-current protection
TT requires at most 8 FS bit times (666 ns)
power on to power good time: 20ms
hub controller current requirement: 0mA
port 1 is removable
usb_control_msg: request: 0x0, requesttype: 0xA0, value 0x0 index 0x0 length 0x4
get_hub_status returned status 1, change 801
local power source is lost (inactive)
no over-current condition exists
enabling power on all ports
usb_control_msg: request: 0x3, requesttype: 0x23, value 0x8 index 0x1 length 0x0
port 1 returns 0
devnum=1 poweron: query_delay=100 connect_timeout=1100
usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4
Port 1 Status 101 Change 1
devnum=1 port=1: USB dev found
usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4
portstatus 101, change 1, 12 Mb/s
usb_control_msg: request: 0x1, requesttype: 0x23, value 0x10 index 0x1 length
0x0
usb_hub_port_reset: resetting port 1...
usb_control_msg: request: 0x3, requesttype: 0x23, value 0x4 index 0x1 length 0x0
usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4
portstatus 111, change 0, 12 Mb/s
STAT_C_CONNECTION = 0 STAT_CONNECTION = 1 USB_PORT_STAT_ENABLE 0
usb_control_msg: request: 0x3, requesttype: 0x23, value 0x4 index 0x1 length 0x0
usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4
portstatus 503, change 10, 480 Mb/s
STAT_C_CONNECTION = 0 STAT_CONNECTION = 1 USB_PORT_STAT_ENABLE 1
usb_control_msg: request: 0x1, requesttype: 0x23, value 0x14 index 0x1 length
0x0
New Device 1
XHCI timeout on event type 33... cannot recover.
BUG: failure at drivers/usb/host/xhci-ring.c:474/xhci_wait_for_event()!
BUG!
Reset CPU by CPC
Here is the drivers/usb/host/xhci-baikal.c:
#include <common.h>
#include <usb.h>
#include <linux/errno.h>
#include <linux/compat.h>
#include <linux/usb/dwc3.h>
#include <linux/usb/xhci-omap.h>
#include "xhci.h"
/* Declare global data pointer */
DECLARE_GLOBAL_DATA_PTR;
struct baikal_xhci {
struct xhci_hccr *hcd;
struct dwc3 *dwc3_reg;
};
static struct baikal_xhci baikal;
int __attribute__((weak)) board_usb_init(int index, enum usb_init_type init);
static int baikal_xhci_core_init(struct baikal_xhci *baikal)
{
int ret = 0;
ret = dwc3_core_init(baikal->dwc3_reg);
if (ret) {
debug("%s:failed to initialize core\n", __func__);
return ret;
}
/* We are hard-coding DWC3 core to Host Mode */
dwc3_set_mode(baikal->dwc3_reg, DWC3_GCTL_PRTCAP_HOST);
return ret;
}
static void baikal_xhci_core_exit(struct baikal_xhci *baikal)
{
}
int xhci_hcd_init(int index, struct xhci_hccr **hccr, struct xhci_hcor **hcor)
{
struct baikal_xhci *ctx = &baikal;
int ret = 0;
ctx->hcd = (struct xhci_hccr *)CONFIG_USB_XHCI_BAIKAL_BASE;
ctx->dwc3_reg = (struct dwc3 *)((char *)(ctx->hcd) + DWC3_REG_OFFSET);
ret = board_usb_init(index, USB_INIT_HOST);
if (ret != 0) {
puts("Failed to initialize board for USB\n");
return ret;
}
ret = baikal_xhci_core_init(ctx);
if (ret < 0) {
puts("Failed to initialize xhci\n");
return ret;
}
*hccr = (struct xhci_hccr *)(CONFIG_USB_XHCI_BAIKAL_BASE);
*hcor = (struct xhci_hcor *)((uint32_t) *hccr
+ HC_LENGTH(xhci_readl(&(*hccr)->cr_capbase)));
debug("baikal-xhci: init hccr %x and hcor %x hc_length %d\n",
(uint32_t)*hccr, (uint32_t)*hcor,
(uint32_t)HC_LENGTH(xhci_readl(&(*hccr)->cr_capbase)));
return ret;
}
void xhci_hcd_stop(int index)
{
}
TIA,
Yuri
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