From e4e51fd97a8b5d59cde525e6eab3c76a951372ee Mon Sep 17 00:00:00 2001 From: Ivan Grokhotkov Date: Mon, 18 May 2020 13:45:17 +0200 Subject: [PATCH] docs: mention ESP32 ECO3 in relation to PSRAM cache workarounds --- docs/en/api-guides/external-ram.rst | 1 + docs/en/api-guides/inc/external-ram-esp32-notes.rst | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/docs/en/api-guides/external-ram.rst b/docs/en/api-guides/external-ram.rst index 182e167e5e..096c852062 100644 --- a/docs/en/api-guides/external-ram.rst +++ b/docs/en/api-guides/external-ram.rst @@ -131,3 +131,4 @@ External RAM use has the following restrictions: .. include:: inc/external-ram-esp32-notes.rst .. _ESP32 ECO: https://www.espressif.com/sites/default/files/documentation/eco_and_workarounds_for_bugs_in_esp32_en.pdf +.. _ESP32 ECO V3 User Guide: https://www.espressif.com/sites/default/files/documentation/ESP32_ECO_V3_User_Guide__EN.pdf diff --git a/docs/en/api-guides/inc/external-ram-esp32-notes.rst b/docs/en/api-guides/inc/external-ram-esp32-notes.rst index 5b4e4f1d8d..a2bd20fd8e 100644 --- a/docs/en/api-guides/inc/external-ram-esp32-notes.rst +++ b/docs/en/api-guides/inc/external-ram-esp32-notes.rst @@ -21,3 +21,8 @@ Aside from linking to a recompiled version of Newlib with the additional flag, E - Avoids using some ROM functions - Allocates static memory for the WiFi stack + +ESP32 rev v3 +------------ + +ESP32 revision 3 ("ECO V3") fixes the PSRAM cache issue found in rev. 1. When :ref:`CONFIG_ESP32_REV_MIN` option is set to rev. 3, compiler workarounds related to PSRAM will be disabled. For more information about ESP32 ECO V3, see `ESP32 ECO V3 User Guide`_.