In preparation for supporting the at24cs EEPROM series add a new flag to
platform data. When set, it should tell the driver that the chip has an
additional read-only memory area that holds a factory pre-programmed serial

Signed-off-by: Bartosz Golaszewski <>
 include/linux/platform_data/at24.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/platform_data/at24.h 
index 8d90f52..5686f91 100644
--- a/include/linux/platform_data/at24.h
+++ b/include/linux/platform_data/at24.h
@@ -47,6 +47,7 @@ struct at24_platform_data {
 #define AT24_FLAG_READONLY     BIT(6)  /* sysfs-entry will be read-only */
 #define AT24_FLAG_IRUGO                BIT(5)  /* sysfs-entry will be 
world-readable */
 #define AT24_FLAG_TAKE8ADDR    BIT(4)  /* take always 8 addresses (24c00) */
+#define AT24_FLAG_SERIAL       BIT(3)  /* factory-programmed serial number */
        void            (*setup)(struct memory_accessor *, void *context);
        void            *context;

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