target/linux/layerscape/patches-5.4/820-usb-0016-MLK-16735-usb-host-add-XHCI_CDNS_HOST-flag.patch

   1 From a9f1d7994a9f8a38fdace19454ef031244e24e5e Mon Sep 17 00:00:00 2001
   2 From: Peter Chen <peter.chen@nxp.com>
   3 Date: Thu, 9 Nov 2017 16:58:40 +0800
   4 Subject: [PATCH] MLK-16735 usb: host: add XHCI_CDNS_HOST flag
   5
   6 The NXP Cadence XHCI host has the same issue with Intel's,
   7 it is triggered by reboot test, the test case is described
   8 at this jira ticket.
   9
  10 BuildInfo:
  11 - SCFW 8dcff26, IMX-MKIMAGE ea027c4b, ATF
  12 - U-Boot 2017.03-imx_v2017.03_4.9.51_imx8_beta1+g6dc7b0f
  13
  14 Acked-by: Jun Li <jun.li@nxp.com>
  15 Signed-off-by: Peter Chen <peter.chen@nxp.com>
  16 (cherry picked from commit 5e353132931b9dc6e05f6bea1281ae35dd6a59d8)
  17 ---
  18  drivers/usb/host/xhci.c | 2 +-
  19  drivers/usb/host/xhci.h | 1 +
  20  2 files changed, 2 insertions(+), 1 deletion(-)
  21
  22 --- a/drivers/usb/host/xhci.c
  23 +++ b/drivers/usb/host/xhci.c
  24 @@ -193,7 +193,7 @@ int xhci_reset(struct xhci_hcd *xhci)
  25          * Without this delay, the subsequent HC register access,
  26          * may result in a system hang very rarely.
  27          */
  28 -       if (xhci->quirks & XHCI_INTEL_HOST)
  29 +       if (xhci->quirks & (XHCI_INTEL_HOST | XHCI_CDNS_HOST))
  30                 udelay(1000);
  31
  32         ret = xhci_handshake(&xhci->op_regs->command,
  33 --- a/drivers/usb/host/xhci.h
  34 +++ b/drivers/usb/host/xhci.h
  35 @@ -1873,6 +1873,7 @@ struct xhci_hcd {
  36  #define XHCI_DEFAULT_PM_RUNTIME_ALLOW  BIT_ULL(33)
  37  #define XHCI_RESET_PLL_ON_DISCONNECT   BIT_ULL(34)
  38  #define XHCI_SNPS_BROKEN_SUSPEND    BIT_ULL(35)
  39 +#define XHCI_CDNS_HOST         BIT_ULL(36)
  40  #define XHCI_SKIP_PHY_INIT     BIT_ULL(37)
  41  #define XHCI_DISABLE_SPARSE    BIT_ULL(38)
  42