Add Allwinner D1 support.

ok dlg@, jca@

diff --git a/sys/dev/fdt/sxidog.c b/sys/dev/fdt/sxidog.c
index 0347f61..2e6e089 100644 (file)
--- a/sys/dev/fdt/sxidog.c
+++ b/sys/dev/fdt/sxidog.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sxidog.c,v 1.3 2021/10/24 17:52:27 mpi Exp $ */
+/* $OpenBSD: sxidog.c,v 1.4 2024/01/26 17:03:45 kettenis Exp $ */
 /*
  * Copyright (c) 2007,2009 Dale Rahn <drahn@openbsd.org>
  *
@@ -55,6 +55,7 @@ struct sxidog_softc {
        int                     sc_type;
 #define SXIDOG_A10             0
 #define SXIDOG_A31             1
+       uint32_t                sc_key;
 };
 
 struct sxidog_softc *sxidog_sc = NULL; /* for sxidog_reset() */
@@ -80,7 +81,8 @@ sxidog_match(struct device *parent, void *match, void *aux)
        struct fdt_attach_args *faa = aux;
 
        return (OF_is_compatible(faa->fa_node, "allwinner,sun4i-a10-wdt") ||
-           OF_is_compatible(faa->fa_node, "allwinner,sun6i-a31-wdt"));
+           OF_is_compatible(faa->fa_node, "allwinner,sun6i-a31-wdt") ||
+           OF_is_compatible(faa->fa_node, "allwinner,sun20i-d1-wdt"));
 }
 
 void
@@ -97,11 +99,18 @@ sxidog_attach(struct device *parent, struct device *self, void *aux)
            faa->fa_reg[0].size, 0, &sc->sc_ioh))
                panic("sxidog_attach: bus_space_map failed!");
 
-       if (OF_is_compatible(faa->fa_node, "allwinner,sun6i-a31-wdt")) {
-               SXIWRITE4(sc, WDOG0_CFG_REG, WDOG0_RST_EN);
+       if (OF_is_compatible(faa->fa_node, "allwinner,sun20i-d1-wdt"))
+               sc->sc_key = 0x16aa0000;
+
+       if (OF_is_compatible(faa->fa_node, "allwinner,sun6i-a31-wdt") ||
+           OF_is_compatible(faa->fa_node, "allwinner,sun20i-d1-wdt")) {
+               SXIWRITE4(sc, WDOG0_MODE_REG, sc->sc_key);
+               SXIWRITE4(sc, WDOG0_CFG_REG, WDOG0_RST_EN | sc->sc_key);
                sc->sc_type = SXIDOG_A31;
-       } else
+       } else {
+               SXIWRITE4(sc, WDOG_MODE_REG, 0);
                sc->sc_type = SXIDOG_A10;
+       }
 
        sxidog_sc = sc;
        cpuresetfn = sxidog_reset;
@@ -152,7 +161,7 @@ sxidog_callback(void *arg, int period)
        case SXIDOG_A31:
                enable = (period > 0) ? WDOG0_EN : 0;
                SXIWRITE4(sc, WDOG0_MODE_REG,
-                   enable | WDOG0_INTV_VALUE(period));
+                   enable | WDOG0_INTV_VALUE(period) | sc->sc_key);
                SXIWRITE4(sc, WDOG0_CTRL_REG, WDOG0_KEY | WDOG0_RSTART);
                break;
        }