[PATCH v4 1/4] dt-bindings: at24: consistently document the compatible property
From: Bartosz Golaszewski <hidden>
Date: 2017-12-28 10:50:14
Also in:
linux-i2c, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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 <redacted> --- Documentation/devicetree/bindings/eeprom/at24.txt | 58 ++++++++++++++--------- 1 file changed, 36 insertions(+), 22 deletions(-)
diff --git a/Documentation/devicetree/bindings/eeprom/at24.txt b/Documentation/devicetree/bindings/eeprom/at24.txt
index cbc80e194ac6..0c8e1341908f 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 <type> 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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2.15.1