fdt: Add node driver picker

1 files changed, 10 insertions, 0 deletions

diff --git a/src/fdt.zig b/src/fdt.zig
index 2139807..3912833 100644
--- a/src/fdt.zig
+++ b/src/fdt.zig
@@ -40,6 +40,16 @@ pub const Node = struct {
 
         return try std.fmt.parseInt(usize, unitAddrStr, 16);
     }
+
+    pub fn preferredDriver(self: Node, drivers: []const []const u8) ?[]const u8 {
+        const compatible_prop = self.props.get("compatible") orelse return false;
+
+        for (std.mem.tokenizeScalar(u8, compatible_prop, '\x00')) |compatible| {
+            if (std.mem.containsAtLeast([]const u8, drivers, compatible)) return compatible;
+        }
+
+        return null;
+    }
 };
 
 pub const Property = struct {