+/*
+ * workaround: usb3.2 gen1 isoc rx hw issue
+ * host send out unexpected ACK afer device fininsh a burst transfer with
+ * a short packet.
+ */
+static void xhci_mtk_rxfifo_depth_set(struct xhci_hcd_mtk *mtk)
+{
+ struct usb_hcd *hcd = mtk->hcd;
+ u32 value;
+
+ if (!mtk->rxfifo_depth)
+ return;
+
+ value = readl(hcd->regs + HSCH_CFG1);
+ value &= ~SCH3_RXFIFO_DEPTH_MASK;
+ value |= FIELD_PREP(SCH3_RXFIFO_DEPTH_MASK,
+ SCH_FIFO_TO_KB(mtk->rxfifo_depth) - 1);
+ writel(value, hcd->regs + HSCH_CFG1);
+}
+
+static void xhci_mtk_init_quirk(struct xhci_hcd_mtk *mtk)
+{
+ /* workaround only for mt8195 */
+ xhci_mtk_set_frame_interval(mtk);
+
+ /* workaround for SoCs using SSUSB about before IPM v1.6.0 */
+ xhci_mtk_rxfifo_depth_set(mtk);
+}
+