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

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

[Thorsten Blum]

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 <thorsten.blum@linux.dev>
---
 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);

[PATCH 2/2] dt-bindings: trivial-devices: add atmel,atecc608b

[Thorsten Blum]

Add entry for ATECC608B.  Update the ATECC508A comment for consistency.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
 Documentation/devicetree/bindings/trivial-devices.yaml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
index a482aeadcd44..9da4c73b23cf 100644
--- a/Documentation/devicetree/bindings/trivial-devices.yaml
+++ b/Documentation/devicetree/bindings/trivial-devices.yaml
@@ -63,8 +63,10 @@ properties:
           - arduino,unoq-mcu
             # Temperature monitoring of Astera Labs PT5161L PCIe retimer
           - asteralabs,pt5161l
-            # i2c h/w elliptic curve crypto module
+            # ATECC508A - i2c h/w elliptic curve crypto module
           - atmel,atecc508a
+            # ATECC608B - i2c h/w elliptic curve crypto module
+          - atmel,atecc608b
             # ATSHA204 - i2c h/w symmetric crypto module
           - atmel,atsha204
             # ATSHA204A - i2c h/w symmetric crypto module

Re: [PATCH 2/2] dt-bindings: trivial-devices: add atmel,atecc608b

[Rob Herring (Arm)]

On Mon, 30 Mar 2026 12:08:01 +0200, Thorsten Blum wrote:
> Add entry for ATECC608B.  Update the ATECC508A comment for consistency.
> 
> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
> ---
>  Documentation/devicetree/bindings/trivial-devices.yaml | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 

Acked-by: Rob Herring (Arm) <robh@kernel.org>

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

[Herbert Xu]

On Mon, Mar 30, 2026 at 12:08:00PM +0200, Thorsten Blum wrote:
> 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 <thorsten.blum@linux.dev>
> ---
>  drivers/crypto/atmel-ecc.c | 3 +++
>  1 file changed, 3 insertions(+)

Is there supposed to be a 2/2 or should I apply this patch on its
own?

Thanks,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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

[Thorsten Blum]

On Sun, Apr 12, 2026 at 01:51:10PM +0800, Herbert Xu wrote:
> On Mon, Mar 30, 2026 at 12:08:00PM +0200, Thorsten Blum wrote:
> > 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 <thorsten.blum@linux.dev>
> > ---
> >  drivers/crypto/atmel-ecc.c | 3 +++
> >  1 file changed, 3 insertions(+)
> 
> Is there supposed to be a 2/2 or should I apply this patch on its
> own?

Patch 2/2 is here:

https://lore.kernel.org/lkml/20260330100800.389042-4-thorsten.blum@linux.dev/

Thanks,
Thorsten

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

[Herbert Xu]

On Sun, Apr 12, 2026 at 09:18:13AM +0200, Thorsten Blum wrote:
>
> Patch 2/2 is here:
> 
> https://lore.kernel.org/lkml/20260330100800.389042-4-thorsten.blum@linux.dev/

Please repost 2/2 to linux-crypto with Rob's ack.

Thanks,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt