[src/trunk]: src/sys/arch/arm/nvidia Enable regulators at attach

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

details:   https://anonhg.NetBSD.org/src/rev/10baf8f676cd
branches:  trunk
changeset: 356403:10baf8f676cd
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Fri Sep 22 18:13:36 2017 +0000

description:
Enable regulators at attach

diffstat:

 sys/arch/arm/nvidia/tegra_xusb.c |  40 ++++++++++++++++++++++++++++++++++++++--
 1 files changed, 38 insertions(+), 2 deletions(-)

diffs (75 lines):

diff -r f483bd256701 -r 10baf8f676cd sys/arch/arm/nvidia/tegra_xusb.c
--- a/sys/arch/arm/nvidia/tegra_xusb.c  Fri Sep 22 18:13:16 2017 +0000
+++ b/sys/arch/arm/nvidia/tegra_xusb.c  Fri Sep 22 18:13:36 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tegra_xusb.c,v 1.8 2017/09/21 23:44:48 jmcneill Exp $ */
+/* $NetBSD: tegra_xusb.c,v 1.9 2017/09/22 18:13:36 jmcneill Exp $ */
 
 /*
  * Copyright (c) 2016 Jonathan A. Kollasch
@@ -30,7 +30,7 @@
 #include "opt_tegra.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tegra_xusb.c,v 1.8 2017/09/21 23:44:48 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tegra_xusb.c,v 1.9 2017/09/22 18:13:36 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -122,6 +122,7 @@
 static int     tegra_xusb_open_fw(struct tegra_xusb_softc * const);
 static int     tegra_xusb_load_fw(struct tegra_xusb_softc * const, void *,
     size_t);
+static void    tegra_xusb_init_regulators(struct tegra_xusb_softc * const);
 
 static int     xusb_mailbox_send(struct tegra_xusb_softc * const, uint32_t);
 
@@ -320,6 +321,8 @@
 
        DELAY(1);
 
+       tegra_xusb_init_regulators(psc);
+
        tegra_xusb_init(psc);
 
 #if defined(TEGRA124_XUSB_BIN_STATIC)
@@ -487,6 +490,39 @@
 }
 
 static void
+tegra_xusb_init_regulators(struct tegra_xusb_softc * const psc)
+{
+       const char * supply_names[] = {
+               "dvddio-pex-supply",
+               "hvddio-pex-supply",
+               "avdd-usb-supply",
+               "avdd-pll-utmip-supply",
+               "avdd-pll-uerefe-supply",
+               "dvdd-usb-ss-pll-supply",
+               "hvdd-usb-ss-pll-e-supply"
+       };
+       device_t dev = psc->sc_xhci.sc_dev;
+       const int phandle = psc->sc_phandle;
+       struct fdtbus_regulator *reg;
+       int n, error;
+
+       for (n = 0; n < __arraycount(supply_names); n++) {
+               if (!of_hasprop(phandle, supply_names[n]))
+                       continue;
+               reg = fdtbus_regulator_acquire(phandle, supply_names[n]);
+               if (reg == NULL) {
+                       aprint_error_dev(dev, "couldn't acquire supply '%s'\n",
+                           supply_names[n]);
+                       continue;
+               }
+               error = fdtbus_regulator_enable(reg);
+               if (error != 0)
+                       aprint_error_dev(dev, "couldn't enable supply '%s': %d\n",
+                           supply_names[n], error);
+       }
+}
+
+static void
 tegra_xusb_init(struct tegra_xusb_softc * const psc)
 {
        struct xhci_softc * const sc = &psc->sc_xhci;