aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/i2c/chips/pca9539
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2008-07-18 05:39:39 -0400
committerDavid S. Miller <davem@davemloft.net>2008-07-18 05:39:39 -0400
commit49997d75152b3d23c53b0fa730599f2f74c92c65 (patch)
tree46e93126170d02cfec9505172e545732c1b69656 /Documentation/i2c/chips/pca9539
parenta0c80b80e0fb48129e4e9d6a9ede914f9ff1850d (diff)
parent5b664cb235e97afbf34db9c4d77f08ebd725335e (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: Documentation/powerpc/booting-without-of.txt drivers/atm/Makefile drivers/net/fs_enet/fs_enet-main.c drivers/pci/pci-acpi.c net/8021q/vlan.c net/iucv/iucv.c
Diffstat (limited to 'Documentation/i2c/chips/pca9539')
-rw-r--r--Documentation/i2c/chips/pca953910
1 files changed, 9 insertions, 1 deletions
diff --git a/Documentation/i2c/chips/pca9539 b/Documentation/i2c/chips/pca9539
index 1d81c530c4a5..6aff890088b1 100644
--- a/Documentation/i2c/chips/pca9539
+++ b/Documentation/i2c/chips/pca9539
@@ -7,7 +7,7 @@ drivers/gpio/pca9539.c instead.
7Supported chips: 7Supported chips:
8 * Philips PCA9539 8 * Philips PCA9539
9 Prefix: 'pca9539' 9 Prefix: 'pca9539'
10 Addresses scanned: 0x74 - 0x77 10 Addresses scanned: none
11 Datasheet: 11 Datasheet:
12 http://www.semiconductors.philips.com/acrobat/datasheets/PCA9539_2.pdf 12 http://www.semiconductors.philips.com/acrobat/datasheets/PCA9539_2.pdf
13 13
@@ -23,6 +23,14 @@ The input sense can also be inverted.
23The 16 lines are split between two bytes. 23The 16 lines are split between two bytes.
24 24
25 25
26Detection
27---------
28
29The PCA9539 is difficult to detect and not commonly found in PC machines,
30so you have to pass the I2C bus and address of the installed PCA9539
31devices explicitly to the driver at load time via the force=... parameter.
32
33
26Sysfs entries 34Sysfs entries
27------------- 35-------------
28 36