--- zzzz-none-000/linux-4.9.231/include/linux/platform_data/at24.h	2020-07-22 07:10:54.000000000 +0000
+++ falcon-5590-729/linux-4.9.231/include/linux/platform_data/at24.h	2022-03-30 12:03:35.000000000 +0000
@@ -50,6 +50,7 @@
 #define AT24_FLAG_TAKE8ADDR	BIT(4)	/* take always 8 addresses (24c00) */
 #define AT24_FLAG_SERIAL	BIT(3)	/* factory-programmed serial number */
 #define AT24_FLAG_MAC		BIT(2)	/* factory-programmed mac address */
+#define AT24_FLAG_NOTEST	BIT(1)	/* don't test if device really exists */
 
 	void		(*setup)(struct nvmem_device *nvmem, void *context);
 	void		*context;