From 8404459918d9bef8facafaef53a91ead342ed104 Mon Sep 17 00:00:00 2001
From: Mattia Moffa <mattia@moffa.xyz>
Date: Thu, 4 Jun 2026 21:04:34 +0200
Subject: [PATCH] Update README

---
 wolfcrypt/src/port/maxim/README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/wolfcrypt/src/port/maxim/README.md b/wolfcrypt/src/port/maxim/README.md
index e759472b94..171251fc18 100644
--- a/wolfcrypt/src/port/maxim/README.md
+++ b/wolfcrypt/src/port/maxim/README.md
@@ -84,6 +84,12 @@ hardware.
 - SHA-384
 - SHA-512
 
+By default `MAX3266X_SHA` drives the TPU directly, feeding the message to the
+hardware incrementally so hashes of any size are supported. Defining `#define
+WOLFSSL_MAX3266X_SHA_ONESHOT` in `user_settings.h` instead buffers the whole
+message in memory and hashes it in one shot using the SDK, which has slightly
+better performance.
+
 `#define MAX3266X_MATH` (Replaces math operation calls for algos
 like RSA and ECC key generation):