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| author | Peter Tyser <ptyser@xes-inc.com> | 2008-12-17 16:36:21 -0600 |
|---|---|---|
| committer | Andrew Fleming-AFLEMING <afleming@freescale.com> | 2008-12-19 18:11:49 -0600 |
| commit | e92739d34e2d6b6aca93b2598248210710897ce8 (patch) | |
| tree | 48e948a4280720cebc824335dab61f68558e13fc /README | |
| parent | 7a8979591171676417ab36852d8811a8c46accd8 (diff) | |
| download | u-boot-imx-e92739d34e2d6b6aca93b2598248210710897ce8.zip u-boot-imx-e92739d34e2d6b6aca93b2598248210710897ce8.tar.gz u-boot-imx-e92739d34e2d6b6aca93b2598248210710897ce8.tar.bz2 | |
Add support for PCA953x I2C gpio devices
Initial support for NXP's 4 and 8 bit I2C gpio expanders
(eg pca9537, pca9557, etc). The CONFIG_PCA953X define
enables support for the devices while the CONFIG_CMD_PCA953X
define enables the pca953x command. The CONFIG_CMD_PCA953X_INFO
define enables an 'info' sub-command which provides summary
information for the given pca953x device.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'README')
| -rw-r--r-- | README | 9 |
1 files changed, 9 insertions, 0 deletions
@@ -621,6 +621,8 @@ The following options need to be configured: CONFIG_CMD_MII * MII utility commands CONFIG_CMD_NAND * NAND support CONFIG_CMD_NET bootp, tftpboot, rarpboot + CONFIG_CMD_PCA953X * PCA953x I2C gpio commands + CONFIG_CMD_PCA953X_INFO * PCA953x I2C gpio info command CONFIG_CMD_PCI * pciinfo CONFIG_CMD_PCMCIA * PCMCIA support CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network @@ -698,6 +700,13 @@ The following options need to be configured: Note that if the RTC uses I2C, then the I2C interface must also be configured. See I2C Support, below. +- GPIO Support: + CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO + CONFIG_PCA953X_INFO - enable pca953x info command + + Note that if the GPIO device uses I2C, then the I2C interface + must also be configured. See I2C Support, below. + - Timestamp Support: When CONFIG_TIMESTAMP is selected, the timestamp |