From 6259ca9ded5b5c05cf0e47e45a588511053cb875 Mon Sep 17 00:00:00 2001
From: Clyde Stubbs <2366188+clydebarrow@users.noreply.github.com>
Date: Tue, 15 Apr 2025 11:10:44 +1000
Subject: [PATCH] [lvgl] Small buffers in internal RAM (#8523)

---
 esphome/components/lvgl/lvgl_esphome.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/esphome/components/lvgl/lvgl_esphome.cpp b/esphome/components/lvgl/lvgl_esphome.cpp
index 2560cd2168..8d8380d429 100644
--- a/esphome/components/lvgl/lvgl_esphome.cpp
+++ b/esphome/components/lvgl/lvgl_esphome.cpp
@@ -433,7 +433,11 @@ void LvglComponent::setup() {
   auto height = display->get_height();
   size_t buffer_pixels = width * height / this->buffer_frac_;
   auto buf_bytes = buffer_pixels * LV_COLOR_DEPTH / 8;
-  auto *buffer = lv_custom_mem_alloc(buf_bytes);  // NOLINT
+  void *buffer = nullptr;
+  if (this->buffer_frac_ >= 4)
+    buffer = malloc(buf_bytes);  // NOLINT
+  if (buffer == nullptr)
+    buffer = lv_custom_mem_alloc(buf_bytes);  // NOLINT
   if (buffer == nullptr) {
     this->mark_failed();
     this->status_set_error("Memory allocation failure");