VAR-SOM-AM33 Linux SDK 7 Configurations: Difference between revisions
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= Change u-boot default Ethernet port to Gbit Ethernet = | = Change u-boot default Ethernet port to Gbit Ethernet = | ||
Default ethernet port is defined in the below | Default ethernet port is defined in the below struct in board/ti/var-som-am33/board.c | ||
Changing the order of the definition of the | Changing the order of the definition of the ports determines the default port, when the last defined port is the default. | ||
<pre> | <pre> | ||
static struct cpsw_slave_data cpsw_slaves[] = { | static struct cpsw_slave_data cpsw_slaves[] = { | ||
| Line 27: | Line 27: | ||
; | ; | ||
</pre> | </pre> | ||
= Change USB-OTG port configuration to Host-only = | |||
From SW perspective, the developer should do as follows: | |||
*Download a VAR-SOM-AM33 kernel out-of-tree. | |||
*Update var-som-am33.dts, as follows: | |||
<pre> | |||
$ gedit arch/arm/boot/dts/var-som-am33.dts | |||
... | |||
usb@47401800 { | |||
status = "okay"; | |||
dr_mode = "host"; /* <<-- Add this line */ | |||
}; | |||
... | |||
</pre> | |||
*Build var-som-am33.dtb and replace it on flash / NFS. | |||
Once the var-som-am33.dtb has been replaced on flash / NFS - The USB-OTG port will function in Host-only mode. | |||
= Reference Documentation = | = Reference Documentation = | ||
Latest revision as of 11:51, 12 October 2014
VAR-SOM-AM33 SDK 7.0 typical configurations
LCD porting
Refer to:LCD porting
Installing Graphics SDK
Refer to: Installing Graphics SDK
Change u-boot default Ethernet port to Gbit Ethernet
Default ethernet port is defined in the below struct in board/ti/var-som-am33/board.c Changing the order of the definition of the ports determines the default port, when the last defined port is the default.
static struct cpsw_slave_data cpsw_slaves[] = {
{
.slave_reg_ofs = 0x308,
.sliver_reg_ofs = 0xdc0,
.phy_addr = 7,
},
{
.slave_reg_ofs = 0x208, //Default u-boot port is 10/100 port
.sliver_reg_ofs = 0xd80,
.phy_addr = 0,
},
}
;
Change USB-OTG port configuration to Host-only
From SW perspective, the developer should do as follows:
- Download a VAR-SOM-AM33 kernel out-of-tree.
- Update var-som-am33.dts, as follows:
$ gedit arch/arm/boot/dts/var-som-am33.dts
...
usb@47401800 {
status = "okay";
dr_mode = "host"; /* <<-- Add this line */
};
...
- Build var-som-am33.dtb and replace it on flash / NFS.
Once the var-som-am33.dtb has been replaced on flash / NFS - The USB-OTG port will function in Host-only mode.