Hi all, On Thu, Jan 26, 2023 at 3:38 PM Tony Dinh <mibo...@gmail.com> wrote: > > Hi all, > > I ran some tests today (Pogo V4 and NSA310S boards) with the latest > master branch and saw the same behavior we've seen before. The boards > hung, and the serial console was silent after kwboot finished > transferring the u-boot image. I'm running with this DTSI patch below > (to enable dm-pre-reloc for uart0). > > If I deselected DM_SERIAL then both boards booted OK with kwboot. > > diff --git a/arch/arm/dts/kirkwood-nsa310s.dts > b/arch/arm/dts/kirkwood-nsa310s.dts > index 09ee76c2a2..6c5a991fde 100644 > --- a/arch/arm/dts/kirkwood-nsa310s.dts > +++ b/arch/arm/dts/kirkwood-nsa310s.dts > @@ -317,3 +317,8 @@ > &pcie0 { > status = "okay"; > }; > + > +&uart0 { > + u-boot,dm-pre-reloc; > + status = "okay"; > +}; > diff --git a/arch/arm/dts/kirkwood-pogoplug-series-4.dts > b/arch/arm/dts/kirkwood-pogoplug-series-4.dts > index 5aa4669ae2..ef495d69f5 100644 > --- a/arch/arm/dts/kirkwood-pogoplug-series-4.dts > +++ b/arch/arm/dts/kirkwood-pogoplug-series-4.dts > @@ -98,6 +98,7 @@ > }; > > &uart0 { > + u-boot,dm-pre-reloc; > status = "okay"; > }; > > @Michael, it would be great if you could try with your Buffalo board, > and see if you will experience the same behavior.
Looks like this commit was the indirect cause of the problem. Convert CONFIG_SYS_NS16550_MEM32 et al to Kconfig https://github.com/u-boot/u-boot/commit/9591b63531fa5a34698ee7bb3800af6c4ea6ba2f -CONFIG_SYS_NS16550=y +CONFIG_SYS_NS16550_SERIAL=y +CONFIG_SYS_NS16550_REG_SIZE=-4 Later, when we enabled DM_SERIAL, CONFIG_SYS_NS16550_SERIAL and CONFIG_SYS_NS16550_REG_SIZE got deselected. But CONFIG_SYS_NS16550 is needed again. So bring it back and it will work. diff --git a/configs/pogo_v4_defconfig b/configs/pogo_v4_defconfig index 3860ad30d3..f98e6cdc6e 100644 --- a/configs/pogo_v4_defconfig +++ b/configs/pogo_v4_defconfig @@ -70,8 +70,7 @@ CONFIG_PCI=y CONFIG_PCI_MVEBU=y CONFIG_DM_RTC=y CONFIG_RTC_EMULATION=y -CONFIG_SYS_NS16550_SERIAL=y -CONFIG_SYS_NS16550_REG_SIZE=-4 +CONFIG_SYS_NS16550=y CONFIG_USB=y CONFIG_USB_XHCI_HCD=y CONFIG_USB_XHCI_PCI=y All the best, Tony