diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/Luts.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/Luts.aidl
index 592ac50..393354e 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/Luts.aidl
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/Luts.aidl
@@ -40,15 +40,16 @@
      * For data precision, 32-bit float is used to specify a Lut by both the HWC and
      * the platform.
      *
-     * For unflattening/flattening 3D Lut(s), the algorithm below should be observed
-     * by both the HWC and the platform.
      * Assuming that we have a 3D array `ORIGINAL[WIDTH, HEIGHT, DEPTH]`, we would turn it into
      * `FLAT[WIDTH * HEIGHT * DEPTH]` by
      *
      * `FLAT[z + DEPTH * (y + HEIGHT * x)] = ORIGINAL[x, y, z]`
      *
-     * Noted that 1D Lut(s) should be gain curve ones
-     * and 3D Lut(s) should be pure color lookup ones.
+     * Note that 1D Lut(s) should be gain curve ones and 3D Lut(s) should be pure color lookup
+     * ones. For 3D Luts buffer,the values of the lut buffer should be normalized, ranging from 0.0
+     * to 1.0, inclusively and the data is organized in the order of R, G, B channels.
+     * For 1D Luts, the lut's values should be also normalized for fixed point pixel formats,
+     * and we now ignore floating point pixel formats + extended range buffers.
      */
     @nullable ParcelFileDescriptor pfd;