Quoting Wolfram Sang <wsa@xxxxxxxxxxxxx>:
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
---
Documentation/i2c/instantiating-devices | 34
+++++++++++++++++++++++++++++++--
1 file changed, 32 insertions(+), 2 deletions(-)
diff --git a/Documentation/i2c/instantiating-devices
b/Documentation/i2c/instantiating-devices
index c70e7a7..6df095a 100644
--- a/Documentation/i2c/instantiating-devices
+++ b/Documentation/i2c/instantiating-devices
@@ -8,8 +8,8 @@ reason, the kernel code must instantiate I2C devices
explicitly. There are
several ways to achieve this, depending on the context and requirements.
-Method 1: Declare the I2C devices by bus number
------------------------------------------------
+Method 1a: Declare the I2C devices by bus number
+------------------------------------------------
This method is appropriate when the I2C bus is a system bus as is the case
for many embedded systems. On such systems, each I2C bus has a number
@@ -51,6 +51,36 @@ The devices will be automatically unbound and
destroyed when the I2C bus
they sit on goes away (if ever.)
+Method 1b: Declare the I2C devices via devicetree
+-------------------------------------------------
+
Hi Wolfram,
There is now also a means to instantiate I2C devices through
ACPI. This is documented in Documentation/acpi/enumeration.txt.
Might be worthwhile to reference it from instantiating-devices.
I guess that would be a separate patch though.
Thanks,
Guenter
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