diff mbox series

[2/2] eeprom: at24: add ST M24C32-D Additional Write lockable page support

Message ID 20231010190926.57674-2-marex@denx.de
State Accepted
Delegated to: Bartosz Golaszewski
Headers show
Series [1/2] dt-bindings: at24: add ST M24C32-D Additional Write lockable page | expand

Commit Message

Marek Vasut Oct. 10, 2023, 7:09 p.m. UTC 
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.

Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-i2c@vger.kernel.org
---
 drivers/misc/eeprom/at24.c | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Bartosz Golaszewski Oct. 12, 2023, 9:28 a.m. UTC | #1 
On Tue, Oct 10, 2023 at 9:09 PM Marek Vasut <marex@denx.de> wrote:
>
> 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.
>
> Signed-off-by: Marek Vasut <marex@denx.de>
> ---

Applied, thanks!

Bart
diff mbox series

Patch

diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index 7dfd7fdb423e6..616e63efc9864 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -191,6 +191,8 @@  AT24_CHIP_DATA(at24_data_24c16, 16384 / 8, 0);
 AT24_CHIP_DATA(at24_data_24cs16, 16,
 	AT24_FLAG_SERIAL | AT24_FLAG_READONLY);
 AT24_CHIP_DATA(at24_data_24c32, 32768 / 8, AT24_FLAG_ADDR16);
+/* M24C32-D Additional Write lockable page (M24C32-D order codes) */
+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);
@@ -222,6 +224,7 @@  static const struct i2c_device_id at24_ids[] = {
 	{ "24c16",	(kernel_ulong_t)&at24_data_24c16 },
 	{ "24cs16",	(kernel_ulong_t)&at24_data_24cs16 },
 	{ "24c32",	(kernel_ulong_t)&at24_data_24c32 },
+	{ "24c32d-wl",	(kernel_ulong_t)&at24_data_24c32d_wlp },
 	{ "24cs32",	(kernel_ulong_t)&at24_data_24cs32 },
 	{ "24c64",	(kernel_ulong_t)&at24_data_24c64 },
 	{ "24cs64",	(kernel_ulong_t)&at24_data_24cs64 },
@@ -252,6 +255,7 @@  static const struct of_device_id at24_of_match[] = {
 	{ .compatible = "atmel,24c16",		.data = &at24_data_24c16 },
 	{ .compatible = "atmel,24cs16",		.data = &at24_data_24cs16 },
 	{ .compatible = "atmel,24c32",		.data = &at24_data_24c32 },
+	{ .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,24cs64",		.data = &at24_data_24cs64 },