[src/trunk]: src/sys/dev/fdt Add support for snps, dis-tx-ipgap-linecheck-quir...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8cf6fd85f284
branches:  trunk
changeset: 847137:8cf6fd85f284
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Thu Dec 12 00:45:59 2019 +0000

description:
Add support for snps,dis-tx-ipgap-linecheck-quirk quirk

diffstat:

 sys/dev/fdt/dwc3_fdt.c |  18 ++++++++++++++----
 1 files changed, 14 insertions(+), 4 deletions(-)

diffs (60 lines):

diff -r b64702b9f1d4 -r 8cf6fd85f284 sys/dev/fdt/dwc3_fdt.c
--- a/sys/dev/fdt/dwc3_fdt.c    Wed Dec 11 21:04:47 2019 +0000
+++ b/sys/dev/fdt/dwc3_fdt.c    Thu Dec 12 00:45:59 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: dwc3_fdt.c,v 1.7 2019/04/19 19:05:56 jmcneill Exp $ */
+/* $NetBSD: dwc3_fdt.c,v 1.8 2019/12/12 00:45:59 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2018 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: dwc3_fdt.c,v 1.7 2019/04/19 19:05:56 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: dwc3_fdt.c,v 1.8 2019/12/12 00:45:59 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -52,6 +52,9 @@
 #define          GCTL_PRTCAP_OTG               3
 #define         GCTL_CORESOFTRESET             __BIT(11)
 
+#define        DWC3_GUCTL1                     0xc11c
+#define         GUCTL1_TX_IPGAP_LINECHECK_DIS  __BIT(28)
+
 #define        DWC3_SNPSID                     0xc120
 #define         DWC3_SNPSID_REV                __BITS(15,0)
 
@@ -120,7 +123,7 @@
 }
 
 static void
-dwc3_fdt_enable_phy(struct xhci_softc *sc, const int phandle)
+dwc3_fdt_enable_phy(struct xhci_softc *sc, const int phandle, u_int rev)
 {
        const char *max_speed, *phy_type;
        u_int phyif_utmi_bits;
@@ -162,6 +165,13 @@
                val &= ~GUSB3PIPECTL_DEPOCHANGE;
        WR4(sc, DWC3_GUSB3PIPECTL(0), val);
 
+       if (rev >= 0x250a) {
+               val = RD4(sc, DWC3_GUCTL1);
+               if (of_hasprop(phandle, "snps,dis-tx-ipgap-linecheck-quirk"))
+                       val |= GUCTL1_TX_IPGAP_LINECHECK_DIS;
+               WR4(sc, DWC3_GUCTL1, val);
+       }
+
        max_speed = fdtbus_get_string(phandle, "maximum-speed");
        if (max_speed == NULL)
                max_speed = "super-speed";
@@ -279,7 +289,7 @@
        }
 
        dwc3_fdt_soft_reset(sc);
-       dwc3_fdt_enable_phy(sc, dwc3_phandle);
+       dwc3_fdt_enable_phy(sc, dwc3_phandle, rev);
        dwc3_fdt_set_mode(sc, GCTL_PRTCAP_HOST);
 
        if (!fdtbus_intr_str(dwc3_phandle, 0, intrstr, sizeof(intrstr))) {