diff --git a/src/freedreno/vulkan/tu_formats.c b/src/freedreno/vulkan/tu_formats.c
index 46b3c352bbf..cfbbff95a24 100644
--- a/src/freedreno/vulkan/tu_formats.c
+++ b/src/freedreno/vulkan/tu_formats.c
@@ -26,7 +26,7 @@ tu6_format_vtx(VkFormat vk_format)
    return fmt;
 }
 
-bool
+static bool
 tu6_format_vtx_supported(VkFormat vk_format)
 {
    enum pipe_format format = vk_format_to_pipe_format(vk_format);
@@ -82,7 +82,7 @@ tu6_format_color_unchecked(enum pipe_format format, enum a6xx_tile_mode tile_mod
    return fmt;
 }
 
-bool
+static bool
 tu6_format_color_supported(enum pipe_format format)
 {
    return tu6_format_color_unchecked(format, TILE6_LINEAR).fmt != FMT6_NONE;
@@ -129,7 +129,7 @@ tu6_format_texture(enum pipe_format format, enum a6xx_tile_mode tile_mode)
    return fmt;
 }
 
-bool
+static bool
 tu6_format_texture_supported(enum pipe_format format)
 {
    return tu6_format_texture_unchecked(format, TILE6_LINEAR).fmt != FMT6_NONE;
diff --git a/src/freedreno/vulkan/tu_formats.h b/src/freedreno/vulkan/tu_formats.h
index e34edf077df..cf74ffd7796 100644
--- a/src/freedreno/vulkan/tu_formats.h
+++ b/src/freedreno/vulkan/tu_formats.h
@@ -19,11 +19,9 @@ struct tu_native_format
 };
 
 enum pipe_format tu_vk_format_to_pipe_format(VkFormat vk_format);
-bool tu6_format_vtx_supported(VkFormat format);
+
 struct tu_native_format tu6_format_vtx(VkFormat format);
-bool tu6_format_color_supported(enum pipe_format format);
 struct tu_native_format tu6_format_color(enum pipe_format format, enum a6xx_tile_mode tile_mode);
-bool tu6_format_texture_supported(enum pipe_format format);
 struct tu_native_format tu6_format_texture(enum pipe_format format, enum a6xx_tile_mode tile_mode);
 
 static inline enum a6xx_format