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| author | Peter Chen <peter.chen@nxp.com> | 2016-04-13 15:16:52 +0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@nxp.com> | 2016-05-04 13:40:31 +0800 |
| commit | 764763f0a0c81cbed4d2c7dc2b05e7173ff85b5b (patch) | |
| tree | 52c9ee5e3ff3996a24562b4f2b3d0d4025b0a5a9 /Documentation/usb | |
| parent | 4e332df63487418ec512c3c376c07df9ab3ae035 (diff) | |
| download | linux-764763f0a0c81cbed4d2c7dc2b05e7173ff85b5b.tar.bz2 | |
doc: usb: chipidea: update the doc for OTG FSM
Since we have added otg version and HNP polling support, update
related documentation.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'Documentation/usb')
| -rw-r--r-- | Documentation/usb/chipidea.txt | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/Documentation/usb/chipidea.txt b/Documentation/usb/chipidea.txt index 678741b0f213..edf7cdfddc88 100644 --- a/Documentation/usb/chipidea.txt +++ b/Documentation/usb/chipidea.txt @@ -3,14 +3,17 @@ To show how to demo OTG HNP and SRP functions via sys input files with 2 Freescale i.MX6Q sabre SD boards. -1.1 How to enable OTG FSM in menuconfig +1.1 How to enable OTG FSM --------------------------------------- -Select CONFIG_USB_OTG_FSM, rebuild kernel Image and modules. -If you want to check some internal variables for otg fsm, -mount debugfs, there are 2 files which can show otg fsm -variables and some controller registers value: +1.1.1 Select CONFIG_USB_OTG_FSM in menuconfig, rebuild kernel +Image and modules. If you want to check some internal +variables for otg fsm, mount debugfs, there are 2 files +which can show otg fsm variables and some controller registers value: cat /sys/kernel/debug/ci_hdrc.0/otg cat /sys/kernel/debug/ci_hdrc.0/registers +1.1.2 Add below entries in your dts file for your controller node + otg-rev = <0x0200>; + adp-disable; 1.2 Test operations ------------------- |