From 764763f0a0c81cbed4d2c7dc2b05e7173ff85b5b Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Wed, 13 Apr 2016 15:16:52 +0800 Subject: [PATCH] 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 --- Documentation/usb/chipidea.txt | 13 ++++++++----- 1 file 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 ------------------- -- 2.39.5