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http://www.storm.mg/lifestyle/91281

cannot submit datapipe for urb0, error -28: not enough bandwidth

https://forums.gentoo.org/viewtopic-t-862035-start-0.html

jetson tx1 serial output example

https://developer.ridgerun.com/wiki/index.php?title=Jetson_TX1_serial_port_output

Tegra tegradc framebuffer fbset 配置 fb0 為 HDMI

Tegra K1 内建 2 個顯示控制器 tegradc.0 與 tegradc.1, R21.2 核心配置同時配置 framebuffer 裝置 fb0 與 fb1, tegradc.0 為 fb0, tegradc.1 為 fb1. 

ubuntu@tegra-ubuntu:~$ ls /dev/fb*
/dev/fb0 /dev/fb1

fb1 為 HDMI 顯示器. fb0 為 DSI WXGA 顯示器, 定義於 board-ardbeg-panel.c::ardbeg_panel_configure(). 

default:
        panel = &dsi_p_wuxga_10_1;
        tegra_io_dpd_enable(&dsic_io);
        tegra_io_dpd_enable(&dsid_io);
break;

可使用 fbset 取得 framebuffer 裝置資訊.

http://artistehsu.pixnet.net/blog/post/278200951-%E9%85%8D%E7%BD%AE-fb0-%E7%82%BA-hdmi

When probe() get called?

http://stackoverflow.com/questions/7578582/who-calls-the-probe-of-driver