diff options
| author | Wolfgang Denk <wd@denx.de> | 2010-10-25 08:06:52 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-10-25 08:06:52 +0200 |
| commit | c163f4478ca72f51b28b55f74addc8fe029d7b83 (patch) | |
| tree | 914495b79944d55ff161fd7611d46ee7ab523978 /doc | |
| parent | 9038e0e7029e47ec1700128351281225f711545e (diff) | |
| parent | 6d79c39958aa0245e59f33860cd1ddd589119968 (diff) | |
Merge branch 'master' of ssh://gemini/home/wd/git/u-boot/master
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.LED_display | 1 | ||||
| -rw-r--r-- | doc/README.POST | 19 |
2 files changed, 13 insertions, 7 deletions
diff --git a/doc/README.LED_display b/doc/README.LED_display index 521746e129..19977ea7e0 100644 --- a/doc/README.LED_display +++ b/doc/README.LED_display @@ -14,7 +14,6 @@ This function should control the state of the LED display. Argument is an ORed combination of the following values: DISPLAY_CLEAR -- clear the display DISPLAY_HOME -- set the position to the beginning of display - DISPLAY_MARK -- enable mark (decimal point), if implemented int display_putc(char c); diff --git a/doc/README.POST b/doc/README.POST index eeb218d39c..6815d491cf 100644 --- a/doc/README.POST +++ b/doc/README.POST @@ -659,12 +659,19 @@ not need any modifications for porting them to another board/CPU. 2.2.2.1. I2C test For verifying the I2C bus, a full I2C bus scanning will be performed -using the i2c_probe() routine. If any I2C device is found, the test -will be considered as passed, otherwise failed. This particular way -will be used because it provides the most common method of testing. -For example, using the internal loopback mode of the CPM I2C -controller for testing would not work on boards where the software -I2C driver (also known as bit-banged driver) is used. +using the i2c_probe() routine. If a board defines +CONFIG_SYS_POST_I2C_ADDRS the I2C test will pass if all devices +listed in CONFIG_SYS_POST_I2C_ADDRS are found, and no additional +devices are detected. If CONFIG_SYS_POST_I2C_ADDRS is not defined +the test will pass if any I2C device is found. + +The CONFIG_SYS_POST_I2C_IGNORES define can be used to list I2C +devices which may or may not be present when using +CONFIG_SYS_POST_I2C_ADDRS. The I2C POST test will pass regardless +if the devices in CONFIG_SYS_POST_I2C_IGNORES are found or not. +This is useful in cases when I2C devices are optional (eg on a +daughtercard that may or may not be present) or not critical +to board operation. 2.2.2.2. Watchdog timer test |