Add some minimal initialization code for rk356x such that the kernel

doesn't hang.

ok millert@, dlg@

diff --git a/sys/dev/fdt/dwpcie.c b/sys/dev/fdt/dwpcie.c
index c8b3274..31813d6 100644 (file)
--- a/sys/dev/fdt/dwpcie.c
+++ b/sys/dev/fdt/dwpcie.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: dwpcie.c,v 1.39 2022/11/27 22:04:59 kettenis Exp $    */
+/*     $OpenBSD: dwpcie.c,v 1.40 2023/03/07 10:24:11 kettenis Exp $    */
 /*
  * Copyright (c) 2018 Mark Kettenis <kettenis@openbsd.org>
  *
@@ -37,6 +37,7 @@
 #include <dev/ofw/ofw_misc.h>
 #include <dev/ofw/ofw_pinctrl.h>
 #include <dev/ofw/ofw_power.h>
+#include <dev/ofw/ofw_regulator.h>
 #include <dev/ofw/fdt.h>
 
 /* Registers */
@@ -1227,6 +1228,26 @@ dwpcie_fu740_init(struct dwpcie_softc *sc)
 int
 dwpcie_rk3568_init(struct dwpcie_softc *sc)
 {
+       uint32_t *reset_gpio;
+       ssize_t reset_gpiolen;
+
+       reset_assert_all(sc->sc_node);
+       regulator_enable(OF_getpropint(sc->sc_node, "vpcie3v3-supply", 0));
+       phy_enable(sc->sc_node, "pcie-phy");
+       reset_deassert_all(sc->sc_node);
+
+       clock_enable_all(sc->sc_node);
+
+       reset_gpiolen = OF_getproplen(sc->sc_node, "reset-gpios");
+       if (reset_gpiolen > 0) {
+               reset_gpio = malloc(reset_gpiolen, M_TEMP, M_WAITOK);
+               OF_getpropintarray(sc->sc_node, "reset-gpios", reset_gpio,
+                   reset_gpiolen);
+               gpio_controller_config_pin(reset_gpio, GPIO_CONFIG_OUTPUT);
+               gpio_controller_set_pin(reset_gpio, 1);
+               free(reset_gpio, M_TEMP, reset_gpiolen);
+       }
+
        sc->sc_num_viewport = 8;
 
        return 0;