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mpc85xx: change legacy "eeprom" compatible

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silences the following message:
> eeprom 0-0051: eeprom driver is deprecated, please use at24 instead

The chip was likely a Dallas Semiconductor and later MAXIM part
before Analog Devices, Inc. bought MAXIM.

From the datasheet:

"The DS28CN01 combines 1024 bits of EEPROM with challenge-and-response
authentication security implemented with the FIPS 180-1/180-2 and
ISO/IEC 10118-3 Secure Hash Algorithm (SHA-1)."

...

"Write Access Requires Knowledge of the Secret
and the Capability of Computing and Transmitting
a 160-Bit MAC as Authorization"

OpenWrt doesn't use it. There's no in-kernel driver
from what I know. Let's document that the chip is
at the location.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
This commit is contained in:
Christian Lamparter 2022-02-13 12:46:37 +01:00
parent 583ac0e11d
commit c7528996a5
1 changed files with 6 additions and 2 deletions
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8
target/linux/mpc85xx/files/arch/powerpc/boot/dts/hiveap-330.dts
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@ -183,10 +183,14 @@
#endif #endif
}; };
/* Most likely SoC boot config */
eeprom@51 { eeprom@51 {
compatible = "eeprom"; /*
* 1Kbit I2C/SMBus EEPROM with SHA-1 Engine
* Aerohive calls it "dallas".
*/
compatible = "adi,ds28cn01";
reg = <0x51>; reg = <0x51>;
read-only;
}; };
}; };