zephyr: lib: add build assert on NUM_CLOCKS

Add a build assert to ensure platform NUM_CLOCKS is set to at least CONFIG_CORE_COUNT. This is assumed to hold in the implementation of platform_clock_init(). Signed-off-by: Kai Vehmanen <[email protected]>
thesofproject · Dec 5, 2024 · 4fde218 · 4fde218
1 parent 8bd2522
commit 4fde218
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/zephyr/lib/clk.c b/zephyr/lib/clk.c
@@ -28,6 +28,14 @@ void platform_clock_init(struct sof *sof)
 
 	sof->clocks = platform_clocks_info;
 
+	/*
+	 * plafforms using this clk.c implementation must
+	 * declare the CPU clocks first, and there must be at least
+	 * one clock per core. If this model doesn't fit, platform
+	 * needs a custom platform_clock_init.
+	 */
+	BUILD_ASSERT(NUM_CLOCKS >= CONFIG_CORE_COUNT, "Invalid NUM_CLOCKS");
+
 	for (i = 0; i < CONFIG_CORE_COUNT; i++) {
 		sof->clocks[i] = (struct clock_info) {
 			.freqs_num = NUM_CPU_FREQ,