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docs(esp_psram): clarify carve-out location is at upper end of PSRAM

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The previous wording "top of PSRAM" was ambiguous: the carve-out is
actually mapped at the highest physical addresses of PSRAM (after the
rodata, text, and main heap mappings). Update the Kconfig help text for
SPIRAM_ENC_EXEMPT and SPIRAM_ENC_EXEMPT_SIZE, the External RAM
documentation, and the internal layout comment to say "upper end of PSRAM
(highest physical addresses)" instead.
This commit is contained in:
Mahavir Jain
2026-06-23 14:56:41 +05:30
parent afdf1a5259
commit 6d51abfc4c
3 changed files with 8 additions and 6 deletions
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components/esp_psram/system_layer/esp_psram.c
+1 -1
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@@ -52,7 +52,7 @@
* PSRAM memory regions:
* - 8bit aligned
* - 32bit aligned
* - Optional: encryption-exempt carve-out (top of PSRAM)
* - Optional: encryption-exempt carve-out (upper end of PSRAM, highest physical addresses)
*/
#define PSRAM_MEM_8BIT_ALIGNED 0
#define PSRAM_MEM_32BIT_ALIGNED 1