diff options
| author | Markus Heidelberg <m.heidelberg@cab.de> | 2025-08-15 11:58:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-09-06 15:58:23 +0200 |
| commit | 534c702c3c234665ca2fe426a9fbb12281e55d55 (patch) | |
| tree | 93fe8498b46d00bc3a81c90c2a2b7f0839c28599 | |
| parent | b009c1dbfc9854ca4460553170ddb6508fe7dafc (diff) | |
dt-bindings: eeprom: at25: use "size" for FRAMs without device ID
Not all FRAM chips have a device ID and implement the corresponding read
command. Thus the memory size, which is contained in the device ID,
cannot be detected and has to be set manually as it is done for EEPROMs.
Link: https://lore.kernel.org/all/20250401133148.38330-1-m.heidelberg@cab.de/
Signed-off-by: Markus Heidelberg <m.heidelberg@cab.de>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250815095839.4219-2-m.heidelberg@cab.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | Documentation/devicetree/bindings/eeprom/at25.yaml | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/eeprom/at25.yaml b/Documentation/devicetree/bindings/eeprom/at25.yaml index c31e5e719525..00e0f07b44f8 100644 --- a/Documentation/devicetree/bindings/eeprom/at25.yaml +++ b/Documentation/devicetree/bindings/eeprom/at25.yaml @@ -56,6 +56,7 @@ properties: $ref: /schemas/types.yaml#/definitions/uint32 description: Total eeprom size in bytes. + Also used for FRAMs without device ID where the size cannot be detected. address-width: $ref: /schemas/types.yaml#/definitions/uint32 @@ -146,4 +147,11 @@ examples: reg = <1>; spi-max-frequency = <40000000>; }; + + fram@2 { + compatible = "cypress,fm25", "atmel,at25"; + reg = <2>; + spi-max-frequency = <20000000>; + size = <2048>; + }; }; |