On 12/19/21 4:53 AM, Geert Uytterhoeven wrote: >> By the way, did you ever figure out how to get the first serial port to work on >> qemu so qemu-system-sh4 doesn't have to "-serial null -serial mon:stdio" to get >> a serial console? > > Nope, same as last time you asked ;-) Well it had been a couple years, you never know... > However, upon a fresh look at linux/arch/sh/boards/mach-r2d/setup.c, > I noticed something I missed before: the SCI port is not available > as a UART, as it is used to talk SPI to an RTC. /* Single Epson RTC-9701JE attached on CS0 */ Huh. That does explain the CONFIG_RTC_DRV_R9701=y in rts7751r2d*_defconfig. (And also SPI SPI_SH_SCI MFD_SM501 RTC_CLASS and RTC_DRV_SH RTC_HCTOSYS which I've never gotten connected to QEMU.) > So that means qemu > has the hardware description wrong? It would be nice if qemu-system-sh4 grew an RTC. Looks like Sato-san and Magnus Damm are the qemu-system-sh4 maintainers? (cc'd) Thanks, Rob
