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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.p1022ds | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/doc/README.p1022ds b/doc/README.p1022ds new file mode 100644 index 0000000000..473ecf6217 --- /dev/null +++ b/doc/README.p1022ds @@ -0,0 +1,24 @@ +Overview +-------- +P1022ds is a Low End Dual core platform supporting the P1022 processor +of QorIQ series. P1022 is an e500 based dual core SOC. + + +Pin Multiplex(hwconfig setting) +------------------------------- +Add the environment 'usb2', 'audclk' and 'tdm' to support pin multiplex +via hwconfig, i.e: +'setenv hwconfig usb2' to enable USB2 and disable eTsec2 +'setenv hwconfig tdm' to enable TDM and disable Audio +'setenv hwconfig audclk:12' to enable Audio(codec clock sources is 12MHz) + and disable TDM +'setenv hwconfig 'usb2;tdm' to enable USB2 and TDM, disable eTsec2 and Audio +'setenv hwconfig 'usb2;audclk:11' to enable USB2 and Audio(codec clock sources + is 11MHz), disable eTsec2 and TDM + +Warning: TDM and AUDIO can not enable simultaneous ! +and AUDIO codec clock sources only setting as 11MHz or 12MHz ! +'setenv hwconfig 'audclk:12;tdm' --- error ! +'setenv hwconfig 'audclk:11;tdm' --- error ! +'setenv hwconfig 'audclk:10' --- error ! + |