* but allow this time to be increased via env variable as some
* devices break the spec and require longer warm-up times
*/
- env = getenv("usb_pgood_delay");
+ env = env_get("usb_pgood_delay");
if (env)
pgood_delay = max(pgood_delay,
(unsigned)simple_strtol(env, NULL, 0));
break;
}
+ switch (dev->descriptor.bDeviceProtocol) {
+ case USB_HUB_PR_FS:
+ break;
+ case USB_HUB_PR_HS_SINGLE_TT:
+ debug("Single TT\n");
+ break;
+ case USB_HUB_PR_HS_MULTI_TT:
+ ret = usb_set_interface(dev, 0, 1);
+ if (ret == 0) {
+ debug("TT per port\n");
+ hub->tt.multi = true;
+ } else {
+ debug("Using single TT (err %d)\n", ret);
+ }
+ break;
+ case USB_HUB_PR_SS:
+ /* USB 3.0 hubs don't have a TT */
+ break;
+ default:
+ debug("Unrecognized hub protocol %d\n",
+ dev->descriptor.bDeviceProtocol);
+ break;
+ }
+
+ /* Note 8 FS bit times == (8 bits / 12000000 bps) ~= 666ns */
+ switch (hubCharacteristics & HUB_CHAR_TTTT) {
+ case HUB_TTTT_8_BITS:
+ if (dev->descriptor.bDeviceProtocol != 0) {
+ hub->tt.think_time = 666;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 8, hub->tt.think_time);
+ }
+ break;
+ case HUB_TTTT_16_BITS:
+ hub->tt.think_time = 666 * 2;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 16, hub->tt.think_time);
+ break;
+ case HUB_TTTT_24_BITS:
+ hub->tt.think_time = 666 * 3;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 24, hub->tt.think_time);
+ break;
+ case HUB_TTTT_32_BITS:
+ hub->tt.think_time = 666 * 4;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 32, hub->tt.think_time);
+ break;
+ }
+
debug("power on to power good time: %dms\n",
descriptor->bPwrOn2PwrGood * 2);
debug("hub controller current requirement: %dmA\n",
"" : "no ");
#ifdef CONFIG_DM_USB
+ /*
+ * Update USB host controller's internal representation of this hub
+ * after the hub descriptor is fetched.
+ */
+ ret = usb_update_hub_device(dev);
+ if (ret < 0 && ret != -ENOSYS) {
+ debug("%s: failed to update hub device for HCD (%x)\n",
+ __func__, ret);
+ return ret;
+ }
+
/*
* A maximum of seven tiers are allowed in a USB topology, and the
* root hub occupies the first tier. The last tier ends with a normal