gustavonihei commented on a change in pull request #5827:
URL: https://github.com/apache/incubator-nuttx/pull/5827#discussion_r833224894
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File path: arch/xtensa/src/esp32s2/Kconfig
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@@ -738,50 +749,6 @@ config ESP32S2_SPIRAM_IGNORE_NOTFOUND
panic. If this is enabled, booting will complete but no PSRAM
will be available.
-config ESP32S2_SPIRAM_2T_MODE
- bool "Enable SPI PSRAM 2T mode"
- depends on ESP32S2_SPIRAM
- default "n"
- ---help---
- Enable this option to fix single bit errors inside 64Mbit PSRAM.
- Some 64Mbit PSRAM chips have a hardware issue in the RAM which
- causes bit errors at multiple fixed bit positions.
- Note: If this option is enabled, the 64Mbit PSRAM chip will
appear
- to be 32Mbit in size.
- Applications will not be affected unless the use the esp_himem
- APIs, which are not supported in 2T mode.
-
-config ESP32S2_SPIRAM_BANKSWITCH_ENABLE
- bool "Enable bank switching for >4MiB external RAM"
- default y
- ---help---
- The ESP32S2 only supports 4MiB of external RAM in its address
- space. The hardware does support larger memories, but these
- have to be bank-switched in and out of this address space.
- Enabling this allows you to reserve some MMU pages for this,
- which allows the use of the esp_himem api to manage these
- banks.
- #Note that this is limited to 62 banks, as
- #esp_spiram_writeback_cache needs some kind of mapping of
- #some banks below that mark to work. We cannot at this
- #moment guarantee this to exist when himem is enabled.
- If spiram 2T mode is enabled, the size of 64Mbit psram will
- be changed as 32Mbit, so himem will be unusable.
-
-config SPIRAM_BANKSWITCH_RESERVE
- int "Amount of 32K pages to reserve for bank switching"
- depends on ESP32S2_SPIRAM_BANKSWITCH_ENABLE
- default 8
- range 1 62
- ---help---
- Select the amount of banks reserved for bank switching. Note
- that the amount of RAM allocatable with malloc will decrease
- by 32K for each page reserved here.
- Note that this reservation is only actually done if your
- program actually uses the himem API. Without any himem
- calls, the reservation is not done and the original amount
- of memory will be available.
-
endmenu #SPI RAM Config
Review comment:
```suggestion
endmenu # SPI RAM Configuration
```
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