Subject: [PATCH 1/2] crypto: atmel-ecc - add support for atecc608b

From: Thorsten Blum <[email-masked]>
Date: Mon, 30 Mar 2026 12:08:00 +0200

Tested on hardware with an ATECC608B at 0x60. The device binds
successfully, passes the driver's sanity check, and registers the
ecdh-nist-p256 KPP algorithm.

The hardware ECDH path was also exercised using a minimal KPP test
module, covering private key generation, public key derivation, and
shared secret computation.

Signed-off-by: Thorsten Blum <[email-masked]>
---
 drivers/crypto/atmel-ecc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/crypto/atmel-ecc.c b/drivers/crypto/atmel-ecc.c
index b6a77c8d439c..5793e0c44113 100644
--- a/drivers/crypto/atmel-ecc.c
+++ b/drivers/crypto/atmel-ecc.c
@@ -371,6 +371,8 @@ static void atmel_ecc_remove(struct i2c_client *client)
 static const struct of_device_id atmel_ecc_dt_ids[] = {
 	{
 		.compatible = "atmel,atecc508a",
+	}, {
+		.compatible = "atmel,atecc608b",
 	}, {
 		/* sentinel */
 	}
@@ -380,6 +382,7 @@ MODULE_DEVICE_TABLE(of, atmel_ecc_dt_ids);
 
 static const struct i2c_device_id atmel_ecc_id[] = {
 	{ "atecc508a" },
+	{ "atecc608b" },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, atmel_ecc_id);