On 2016-11-30 16:41, Ralf Ramsauer wrote: > On 11/30/2016 04:31 PM, Ralf Ramsauer wrote: >> There is UART0 (0x70006000) exposed to the expansion header J21. >> Claudio's patches currently use this one. Surprisingly, this one is >> called the "debug uart", besides the fact that there is another header >> which is called "J17 - UART". (find picture attached) >> >> According to "Jetson TX1 Developer Kit Carrier Board Specification" it's >> 3.3V compliant. >> >> The problem is, that only the 'debug uart' UART0 is enabled in mainline >> device tree of the TX1. Without powering up its clocks (what we >> currently don't support on ARM64) or patching the device tree to enable >> it, we won't be able to use it. I didn't even test that connector so far... >> >> And even then, UART1 is probably connected to 0x70006040, if it follows >> the same scheme as tegra124 SoCs. >> >> To answer your question: No, I don't see 0x70006300, the debug UART we >> use on TK1, be exposed to any header of the TX1. > One addition: > > UART2 as well as UART0 are available on J10, but that's a 2x30, 0.5mm > pitch connector... > > And in deed, UART3, which is probably available through 0x70006300, is > exposed to the camera connector, (again 2x60, 0.5mm pitch, but there's > already the camera mounted on top of it). > > So for the moment and without the need to modify the kernel, the best is > to use 0x70006000 on the TX1, as everyone will have it available. >
In that case, pick the most suitable UART for the TX1 and use a separate mach for it. Jan -- Siemens AG, Corporate Technology, CT RDA ITP SES-DE Corporate Competence Center Embedded Linux -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
