Commit 3774740f authored by Alexander Stein's avatar Alexander Stein Committed by Bartosz Golaszewski
Browse files

eeprom: at24: add ST M24C64-D Additional Write lockable page support 



The ST M24C64-D behaves as a regular M24C64, 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 M24C64 area separately as that is on separate
I2C address from this page.

Signed-off-by: default avatarAlexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: default avatarMarek Vasut <marex@denx.de>
Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent 0997ff1f

drivers/misc/eeprom/at24.c

+4 −0
Original line number Diff line number Diff line
@@ -196,6 +196,8 @@ AT24_CHIP_DATA(at24_data_24c32d_wlp, 32, AT24_FLAG_ADDR16); 
AT24_CHIP_DATA(at24_data_24cs32, 16,

	AT24_FLAG_ADDR16 | AT24_FLAG_SERIAL | AT24_FLAG_READONLY);

AT24_CHIP_DATA(at24_data_24c64, 65536 / 8, AT24_FLAG_ADDR16);

/* M24C64-D Additional Write lockable page (M24C64-D order codes) */

AT24_CHIP_DATA(at24_data_24c64d_wlp, 32, AT24_FLAG_ADDR16);

AT24_CHIP_DATA(at24_data_24cs64, 16,

	AT24_FLAG_ADDR16 | AT24_FLAG_SERIAL | AT24_FLAG_READONLY);

AT24_CHIP_DATA(at24_data_24c128, 131072 / 8, AT24_FLAG_ADDR16);
@@ -227,6 +229,7 @@ static const struct i2c_device_id at24_ids[] = { 
	{ "24c32d-wl",	(kernel_ulong_t)&at24_data_24c32d_wlp },

	{ "24cs32",	(kernel_ulong_t)&at24_data_24cs32 },

	{ "24c64",	(kernel_ulong_t)&at24_data_24c64 },

	{ "24c64-wl",	(kernel_ulong_t)&at24_data_24c64d_wlp },

	{ "24cs64",	(kernel_ulong_t)&at24_data_24cs64 },

	{ "24c128",	(kernel_ulong_t)&at24_data_24c128 },

	{ "24c256",	(kernel_ulong_t)&at24_data_24c256 },
@@ -258,6 +261,7 @@ static const struct of_device_id at24_of_match[] = { 
	{ .compatible = "atmel,24c32d-wl",	.data = &at24_data_24c32d_wlp },

	{ .compatible = "atmel,24cs32",		.data = &at24_data_24cs32 },

	{ .compatible = "atmel,24c64",		.data = &at24_data_24c64 },

	{ .compatible = "atmel,24c64d-wl",	.data = &at24_data_24c64d_wlp },

	{ .compatible = "atmel,24cs64",		.data = &at24_data_24cs64 },

	{ .compatible = "atmel,24c128",		.data = &at24_data_24c128 },

	{ .compatible = "atmel,24c256",		.data = &at24_data_24c256 },