Re: [PATCH 2/2] eeprom: at24: add ST M24C64-D Additional Write lockable page support

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On Fri, Oct 13, 2023 at 8:30 AM Alexander Stein
<alexander.stein@xxxxxxxxxxxxxxx> wrote:
>
> 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 <alexander.stein@xxxxxxxxxxxxxxx>
> ---
> This is a copy & paste of [1] for ST M24C64-D. I reused the same pattern and
> also used Marek's commit message.
>
> [1] https://lore.kernel.org/all/20231010190926.57674-2-marex@xxxxxxx/
>
>  drivers/misc/eeprom/at24.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> 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 },
> --
> 2.34.1
>

Applied, thanks!

Bart





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