[src/trunk]: src/sys/dev/fdt Add support for Samsung Exynos USB3 DRD.

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

details:   https://anonhg.NetBSD.org/src/rev/aee0f6d3a9dc
branches:  trunk
changeset: 320373:aee0f6d3a9dc
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Tue Jul 03 16:05:31 2018 +0000

description:
Add support for Samsung Exynos USB3 DRD.

diffstat:

 sys/dev/fdt/dwc3_fdt.c |  29 +++++++++++++++++++++++------
 1 files changed, 23 insertions(+), 6 deletions(-)

diffs (81 lines):

diff -r 85defe620087 -r aee0f6d3a9dc sys/dev/fdt/dwc3_fdt.c
--- a/sys/dev/fdt/dwc3_fdt.c    Tue Jul 03 12:17:54 2018 +0000
+++ b/sys/dev/fdt/dwc3_fdt.c    Tue Jul 03 16:05:31 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: dwc3_fdt.c,v 1.4 2018/07/03 08:52:36 jmcneill Exp $ */
+/* $NetBSD: dwc3_fdt.c,v 1.5 2018/07/03 16:05:31 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 1.4 2018/07/03 08:52:36 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: dwc3_fdt.c,v 1.5 2018/07/03 16:05:31 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_SNPSID                     0xc120
+#define         DWC3_SNPSID_REV                __BITS(15,0)
+
 #define        DWC3_GUSB2PHYCFG(n)             (0xc200 + ((n) * 4))
 #define         GUSB2PHYCFG_PHYSOFTRST         __BIT(31)
 #define         GUSB2PHYCFG_U2_FREECLK_EXISTS  __BIT(30)
@@ -62,6 +65,8 @@
 
 #define        DWC3_GUSB3PIPECTL(n)            (0xc2c0 + ((n) * 4))
 #define         GUSB3PIPECTL_PHYSOFTRST        __BIT(31)
+#define         GUSB3PIPECTL_UX_EXIT_PX        __BIT(27)
+#define         GUSB3PIPECTL_SUSPHY            __BIT(17)
 
 #define        DWC3_DCFG                       0xc700
 #define         DCFG_SPEED                     __BITS(2,0)
@@ -140,6 +145,12 @@
                val &= ~GUSB2PHYCFG_SUSPHY;
        WR4(sc, DWC3_GUSB2PHYCFG(0), val);
 
+       val = RD4(sc, DWC3_GUSB3PIPECTL(0));
+       val &= ~GUSB3PIPECTL_UX_EXIT_PX;
+       if (of_hasprop(phandle, "snps,dis_u3_susphy_quirk"))
+               val &= ~GUSB3PIPECTL_SUSPHY;
+       WR4(sc, DWC3_GUSB3PIPECTL(0), val);
+
        max_speed = fdtbus_get_string(phandle, "maximum-speed");
        if (max_speed == NULL)
                max_speed = "super-speed";
@@ -176,6 +187,7 @@
        const char * const compatible[] = {
                "allwinner,sun50i-h6-dwc3",
                "rockchip,rk3328-dwc3",
+               "samsung,exynos5250-dwusb3",
                NULL
        };
        struct fdt_attach_args * const faa = aux;
@@ -242,13 +254,18 @@
        }
 
        aprint_naive("\n");
-       aprint_normal(": DesignWare USB3 XHCI\n");
+       aprint_normal(": DesignWare USB3 XHCI");
+       const uint32_t snpsid = RD4(sc, DWC3_SNPSID);
+       const u_int rev = __SHIFTOUT(snpsid, DWC3_SNPSID_REV);
+       aprint_normal(" (rev. %d.%03x)\n", rev >> 12, rev & 0xfff);
 
-       /* Enable phy */
+       /* Enable PHY devices */
+       phy = fdtbus_phy_get(dwc3_phandle, "usb2-phy");
+       if (phy && fdtbus_phy_enable(phy, true) != 0)
+               aprint_error_dev(self, "couldn't enable usb2-phy\n");
        phy = fdtbus_phy_get(dwc3_phandle, "usb3-phy");
-       if (!phy || fdtbus_phy_enable(phy, true) != 0) {
+       if (phy && fdtbus_phy_enable(phy, true) != 0)
                aprint_error_dev(self, "couldn't enable usb3-phy\n");
-       }
 
        dwc3_fdt_soft_reset(sc);
        dwc3_fdt_enable_phy(sc, phandle);