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authorBartosz Golaszewski <brgl@bgdev.pl>2017-12-28 11:49:10 +0100
committerBartosz Golaszewski <brgl@bgdev.pl>2018-01-02 17:52:03 +0100
commit6da28acf745fe2537d77b9044f78a2a4e100c773 (patch)
tree316d4de859f66d7e9fa76e980c1fe05ff603b5fb
parent98fb3a34736dec1e14e43382c0df30f815560e5f (diff)
dt-bindings: at24: consistently document the compatible property
Current description of the compatible property for at24 is quite vague. State explicitly that any "<manufacturer>,<model>" pair is accepted as long as a correct fallback is used for non-atmel chips. Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Reviewed-by: Rob Herring <robh@kernel.org>
-rw-r--r--Documentation/devicetree/bindings/eeprom/at24.txt58
1 files changed, 36 insertions, 22 deletions
diff --git a/Documentation/devicetree/bindings/eeprom/at24.txt b/Documentation/devicetree/bindings/eeprom/at24.txt
index cbc80e194ac6..5ac18ce2e8cd 100644
--- a/Documentation/devicetree/bindings/eeprom/at24.txt
+++ b/Documentation/devicetree/bindings/eeprom/at24.txt
@@ -2,28 +2,42 @@ EEPROMs (I2C)
Required properties:
- - compatible : should be "<manufacturer>,<type>", like these:
-
- "atmel,24c00", "atmel,24c01", "atmel,24c02", "atmel,24c04",
- "atmel,24c08", "atmel,24c16", "atmel,24c32", "atmel,24c64",
- "atmel,24c128", "atmel,24c256", "atmel,24c512", "atmel,24c1024"
-
- "catalyst,24c32"
-
- "microchip,24c128"
-
- "ramtron,24c64"
-
- "renesas,r1ex24002"
-
- The following manufacturers values have been deprecated:
- "at", "at24"
-
- If there is no specific driver for <manufacturer>, a generic
- device with <type> and manufacturer "atmel" should be used.
- Possible types are:
- "24c00", "24c01", "24c02", "24c04", "24c08", "24c16", "24c32", "24c64",
- "24c128", "24c256", "24c512", "24c1024", "spd"
+ - compatible: Must be a "<manufacturer>,<model>" pair. The following <model>
+ values are supported (assuming "atmel" as manufacturer):
+
+ "atmel,24c00",
+ "atmel,24c01",
+ "atmel,24c02",
+ "atmel,spd",
+ "atmel,24c04",
+ "atmel,24c08",
+ "atmel,24c16",
+ "atmel,24c32",
+ "atmel,24c64",
+ "atmel,24c128",
+ "atmel,24c256",
+ "atmel,24c512",
+ "atmel,24c1024",
+
+ If <manufacturer> is not "atmel", then a fallback must be used
+ with the same <model> and "atmel" as manufacturer.
+
+ Example:
+ compatible = "microchip,24c128", "atmel,24c128";
+
+ Supported manufacturers are:
+
+ "catalyst",
+ "microchip",
+ "ramtron",
+ "renesas",
+ "nxp",
+ "st",
+
+ Some vendors use different model names for chips which are just
+ variants of the above. Known such exceptions are listed below:
+
+ "renesas,r1ex24002" - the fallback is "atmel,24c02"
- reg : the I2C address of the EEPROM

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