WIP: device tree MVP

dts/common/freq.h

@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2021 Linaro Limited
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef __DT_FREQ_H
+#define __DT_FREQ_H
+
+#define DT_FREQ_K(x) ((x) * 1000)
+#define DT_FREQ_M(x) ((x) * 1000 * 1000)
+
+#endif /* __DT_FREQ_H */

dts/common/mem.h

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2018 Linaro Limited
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef __DT_MEM_H
+#define __DT_MEM_H
+
+#define DT_SIZE_K(x) ((x) * 1024)
+#define DT_SIZE_M(x) ((x) * 1024 * 1024)
+
+/* concatenate the values of the arguments into one */
+#define _DT_DO_CONCAT(x, y) x ## y
+
+#define DT_ADDR(a) _DT_DO_CONCAT(0x, a)
+
+#endif /* __DT_MEM_H */

dts/common/skeleton.dtsi

@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+
+/*
+ * Skeleton device tree; the bare minimum needed to boot; just include and
+ * add a compatible value.  The bootloader will typically populate the memory
+ * node.
+ */
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	chosen { };
+	aliases { };
+};