lib: utils/reset: Use fdt_driver for initialization

The reset driver subsystem does not need any extra data, so it can use
`struct fdt_driver` directly. The generic fdt_reset_init() performs a
best-effort initialization of all matching DT nodes. Platform-specific
logic expects exactly one DT node to match a single driver. This is
accomplished by using fdt_driver_init_one() with a local list containing
that one driver.

Signed-off-by: Samuel Holland <[email protected]>
Reviewed-by: Anup Patel <[email protected]>

2 files changed, 14 insertions, 4 deletions

diff --git a/platform/generic/sifive/fu740.c b/platform/generic/sifive/fu740.c
index 46dc02ae..52ca12ff 100644
--- a/platform/generic/sifive/fu740.c
+++ b/platform/generic/sifive/fu740.c
@@ -209,11 +209,16 @@ static const struct fdt_match da9063_reset_match[] = {
 	{ },
 };
 
-struct fdt_reset fdt_reset_da9063 = {
+const struct fdt_driver fdt_reset_da9063 = {
 	.match_table = da9063_reset_match,
 	.init = da9063_reset_init,
 };
 
+static const struct fdt_driver *const sifive_fu740_reset_drivers[] = {
+	&fdt_reset_da9063,
+	NULL
+};
+
 static u64 sifive_fu740_tlbr_flush_limit(const struct fdt_match *match)
 {
 	/*
@@ -232,7 +237,7 @@ static int sifive_fu740_final_init(bool cold_boot, void *fdt,
 	int rc;
 
 	if (cold_boot) {
-		rc = fdt_reset_driver_init(fdt, &fdt_reset_da9063);
+		rc = fdt_driver_init_one(fdt, sifive_fu740_reset_drivers);
 		if (rc)
 			sbi_printf("%s: failed to find da9063 for reset\n",
 				   __func__);
diff --git a/platform/generic/starfive/jh7110.c b/platform/generic/starfive/jh7110.c
index 264fe99c..6d95758f 100644
--- a/platform/generic/starfive/jh7110.c
+++ b/platform/generic/starfive/jh7110.c
@@ -227,11 +227,16 @@ static const struct fdt_match pm_reset_match[] = {
 	{ },
 };
 
-static struct fdt_reset fdt_reset_pmic = {
+static const struct fdt_driver fdt_reset_pmic = {
 	.match_table = pm_reset_match,
 	.init = pm_reset_init,
 };
 
+static const struct fdt_driver *const starfive_jh7110_reset_drivers[] = {
+	&fdt_reset_pmic,
+	NULL
+};
+
 static int starfive_jh7110_inst_init(const void *fdt)
 {
 	int noff, rc = 0;
@@ -281,7 +286,7 @@ static int starfive_jh7110_final_init(bool cold_boot, void *fdt,
 				      const struct fdt_match *match)
 {
 	if (cold_boot) {
-		fdt_reset_driver_init(fdt, &fdt_reset_pmic);
+		fdt_driver_init_one(fdt, starfive_jh7110_reset_drivers);
 	}
 
 	return 0;