This is needed (and enough) to get the internal mic visible and working.
Signed-off-by: Andrey Rakhmatullin <wrar@wrar.name>
Message-Id: <
20230501185134.34591-1-wrar@wrar.name>
Signed-off-by: Mark Brown <broonie@kernel.org>
                        DMI_MATCH(DMI_PRODUCT_NAME, "M5402RA"),
                }
        },
+       {
+               .driver_data = &acp6x_card,
+               .matches = {
+                       DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK COMPUTER INC."),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "M6400RC"),
+               }
+       },
        {
                .driver_data = &acp6x_card,
                .matches = {