On 17/07/19 22:58, Tom Rini wrote: > On Fri, Jul 12, 2019 at 02:53:47PM +0530, [email protected] wrote: > >> From: Suniel Mahesh <[email protected]> >> >> This patch disables DM watchdog support for SPL builds and uses >> the legacy omap watchdog on TI AM335x chipsets. >> >> The following build error is reported if DM watchdog support was enabled in >> SPL: >> >> CC spl/drivers/usb/gadget/rndis.o >> LD spl/drivers/usb/gadget/built-in.o >> LD spl/drivers/usb/musb-new/built-in.o >> LD spl/drivers/built-in.o >> LD spl/u-boot-spl >> arm-linux-ld.bfd: u-boot-spl section .u_boot_list will not fit in region >> .sram >> arm-linux-ld.bfd: region .sram overflowed by 440 bytes >> make[1]: *** [spl/u-boot-spl] Error 1 >> make: *** [spl/u-boot-spl] Error 2 >> >> Tested on BeagleboneBlack board. >> >> Signed-off-by: Suniel Mahesh <[email protected]> > > My concern here is that if we don't configure the watchdog we could now > end up in the case where the WDT trips while we're doing a slow boot > such as UART.
Here in SPL, watchdog is configured but it doesn't use DT and DM. It uses legacy driver(non DT/non DM). I have also tested a slow boot(UART) as you indicated on AM335X based BeagleboneBlack board. Here are the results: 1. SPL trying to load u-boot via UART, if it can't find it, then we need to reset the board: U-Boot SPL 2019.07-00058-g076875b-dirty (Jul 18 2019 - 10:39:43 +0530) Trying to boot from UART CCCCCCCCCCspl: ymodem err - Timed out SPL: failed to boot from all boot devices ### ERROR ### Please RESET the board ### 2. if we provide u-boot-dtb.bin, then it loads without any problem. Hope I gave some inputs here. As was mentioned elsewhere we might need to switch to > using platdata so this still fits? right now watchdog driver in SPL is not using platdata, its just a plain driver. Do we need to convert the driver in SPL to use platdata ? And we will need the whole of > "omap2" to build after this is applied, thanks. > yes this needs to be done, once all these are fixed and more over these patches are dependant on Marek Vasuts's patches. https://patchwork.ozlabs.org/patch/1112591/ Regards Sunil _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
