From: Alexander Stein Date: Fri, 13 Oct 2023 06:30:08 +0000 (+0200) Subject: eeprom: at24: add ST M24C64-D Additional Write lockable page support X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3774740fb22162d2c50e79629c4b3e11022ed7d9;p=linux.git 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: Alexander Stein Reviewed-by: Marek Vasut Signed-off-by: Bartosz Golaszewski --- diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index 616e63efc9864..f61a80597a22d 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -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 },