The ST M24C32-D behaves as a regular M24C32, except for the -D variant which uses up another I2C address for Additional Write lockable page. This page is 32 Bytes long and can contain additional data. Add entry for it, so users can describe that page in DT. Note that users still have to describe the main M24C32 area separately as that is on separate I2C address from this page.
From Linux kernel commit:
4791146e9055 ("eeprom: at24: add ST M24C32-D Additional Write lockable page support")
Signed-off-by: Marek Vasut marex@denx.de --- Cc: "NXP i.MX U-Boot Team" uboot-imx@nxp.com Cc: Fabio Estevam festevam@gmail.com Cc: Stefano Babic sbabic@denx.de Cc: u-boot@dh-electronics.com --- drivers/misc/i2c_eeprom.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/misc/i2c_eeprom.c b/drivers/misc/i2c_eeprom.c index bdd7e018cc6..e1d0b8f918a 100644 --- a/drivers/misc/i2c_eeprom.c +++ b/drivers/misc/i2c_eeprom.c @@ -227,6 +227,13 @@ static const struct i2c_eeprom_drv_data atmel24c32_data = { .offset_len = 2, };
+static const struct i2c_eeprom_drv_data atmel24c32d_wlp_data = { + .size = 32, + .pagesize = 32, + .addr_offset_mask = 0, + .offset_len = 2, +}; + static const struct i2c_eeprom_drv_data atmel24c64_data = { .size = 8192, .pagesize = 32, @@ -266,6 +273,7 @@ static const struct udevice_id i2c_eeprom_std_ids[] = { { .compatible = "atmel,24c16a", (ulong)&atmel24c16a_data }, { .compatible = "atmel,24mac402", (ulong)&atmel24mac402_data }, { .compatible = "atmel,24c32", (ulong)&atmel24c32_data }, + { .compatible = "atmel,24c32d-wl", (ulong)&atmel24c32d_wlp_data }, { .compatible = "atmel,24c64", (ulong)&atmel24c64_data }, { .compatible = "atmel,24c128", (ulong)&atmel24c128_data }, { .compatible = "atmel,24c256", (ulong)&atmel24c256_data },