dtc: "syntax error" linked to &{label/subnode} syntax
Tom Rini
trini at konsulko.com
Fri Jan 31 17:01:40 CET 2025
On Fri, Jan 31, 2025 at 03:41:37PM +0100, Patrice CHOTARD wrote:
>
>
> On 1/29/25 23:01, Tom Rini wrote:
> > On Tue, Jan 28, 2025 at 09:04:26AM -0600, Tom Rini wrote:
> >> On Tue, Jan 28, 2025 at 08:04:56AM -0600, Tom Rini wrote:
> >>> On Tue, Jan 28, 2025 at 08:47:37AM +0100, Patrice CHOTARD wrote:
> >>>>
> >>>>
> >>>> On 1/15/25 15:44, Tom Rini wrote:
> >>>>> On Wed, Jan 15, 2025 at 03:39:20PM +0100, Patrice CHOTARD wrote:
> >>>>>>
> >>>>>>
> >>>>>> On 1/15/25 15:24, Patrice CHOTARD wrote:
> >>>>>>>
> >>>>>>>
> >>>>>>> On 1/15/25 14:19, Simon Glass wrote:
> >>>>>>>> Hi Patrice,
> >>>>>>>>
> >>>>>>>> On Wed, 15 Jan 2025 at 03:19, Patrice CHOTARD
> >>>>>>>> <patrice.chotard at foss.st.com> wrote:
> >>>>>>>>>
> >>>>>>>>> Hi
> >>>>>>>>>
> >>>>>>>>> I am currently converting STM32MP platforms to OF_UPSTREAM.
> >>>>>>>>> As we use same binary for several boards, flags CONFIG_OF_UPSTREAM_BUILD_VENDOR=y
> >>>>>>>>> and CONFIG_OF_UPSTREAM_VENDOR="st" are set.
> >>>>>>>>>
> >>>>>>>>> So all dts/upstream/src/arm/st/* dts files are compiled.
> >>>>>>>>>
> >>>>>>>>> I am facing an issue with dts/upstream/src/arm/st/stm32mp151a-prtt1* and
> >>>>>>>>> dts/upstream/src/arm/st/stm32mp15*-mec*.* files.
> >>>>>>>>>
> >>>>>>>>> To be more precise, these files are using a syntax which follows this
> >>>>>>>>> format &{label/subnode} to override some nodes.
> >>>>>>>>>
> >>>>>>>>> This leads to DTC error:
> >>>>>>>>>
> >>>>>>>>> AR drivers/usb/gadget/built-in.o
> >>>>>>>>> LD u-boot
> >>>>>>>>> OBJCOPY u-boot.srec
> >>>>>>>>> OBJCOPY u-boot-nodtb.bin
> >>>>>>>>> SYM u-boot.sym
> >>>>>>>>> DTC dts/upstream/src/arm/st/stm32mp157c-dhcom-picoitx.dtb
> >>>>>>>>> DTC dts/upstream/src/arm/st/stm32h750i-art-pi.dtb
> >>>>>>>>> DTC dts/upstream/src/arm/st/stm32mp157a-microgea-stm32mp1-microdev2.0-of7.dtb
> >>>>>>>>> DTC dts/upstream/src/arm/st/stm32mp157a-iot-box.dtb
> >>>>>>>>> DTC dts/upstream/src/arm/st/stm32746g-eval.dtb
> >>>>>>>>> DTC dts/upstream/src/arm/st/stm32mp151c-mecio1r0.dtb
> >>>>>>>>> DTC dts/upstream/src/arm/st/stm32mp157a-dhcor-avenger96.dtb
> >>>>>>>>> DTC dts/upstream/src/arm/st/ste-nomadik-s8815.dtb
> >>>>>>>>> Error: ../dts/upstream/src/arm/st/stm32mp15x-mecio1-io.dtsi:338.1-2 syntax error
> >>>>>>>>> FATAL ERROR: Unable to parse input tree
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>> At line 338 in dts/upstream/src/arm/st/stm32mp15x-mecio1-io.dtsi we got :
> >>>>>>>>>
> >>>>>>>>> &{qspi_bk1_pins_a/pins} {
> >>>>>>>>> pinmux = <STM32_PINMUX('F', 8, AF10)>, /* QSPI_BK1_IO0 */
> >>>>>>>>> <STM32_PINMUX('F', 9, AF10)>, /* QSPI_BK1_IO1 */
> >>>>>>>>> <STM32_PINMUX('F', 7, AF9)>, /* QSPI_BK1_IO2 */
> >>>>>>>>> <STM32_PINMUX('F', 6, AF9)>; /* QSPI_BK1_IO3 */
> >>>>>>>>> /delete-property/ bias-disable;
> >>>>>>>>> bias-pull-up;
> >>>>>>>>> };
> >>>>>>>>>
> >>>>>>>>> If i update it as following , the DTC compilation is OK :
> >>>>>>>>>
> >>>>>>>>> &qspi_bk1_pins_a {
> >>>>>>>>> pins {
> >>>>>>>>> pinmux = <STM32_PINMUX('F', 8, AF10)>, /* QSPI_BK1_IO0 */
> >>>>>>>>> <STM32_PINMUX('F', 9, AF10)>, /* QSPI_BK1_IO1 */
> >>>>>>>>> <STM32_PINMUX('F', 7, AF9)>, /* QSPI_BK1_IO2 */
> >>>>>>>>> <STM32_PINMUX('F', 6, AF9)>; /* QSPI_BK1_IO3 */
> >>>>>>>>> /delete-property/ bias-disable;
> >>>>>>>>> bias-pull-up;
> >>>>>>>>> };
> >>>>>>>>> };
> >>>>>>>>>
> >>>>>>>>> On kernel side, the DTC compilation is ok, but not on U-Boot side. I am not able to understand the difference.
> >>>>>>>>>
> >>>>>>>>
> >>>>>>>> Could it be that the kernel dtc is newer?
> >>>>>>>
> >>>>>>> I have tested with dtc Version: DTC 1.7.0-gbcd02b52 which is the same dtc version than kernel tag next-20250114
> >>>>>>
> >>>>>> I mean, it's ok with newer version of dtc : DTC 1.7.0-gbcd02b52.
> >>>>>
> >>>>> Ah, so, sigh, we need to update DTC. I stopped my last upgrade there
> >>>>> because other changes it made grew the binary size for everyone and
> >>>>> didn't get back to it. I guess another attempt is in order.
> >>>>>
> >>>>
> >>>> Hi Tom
> >>>>
> >>>> Do you know when you will be able to provide a DTC update in master or next branch ?
> >>>
> >>> Unfortunately trying to update resync-dtc-v1.6.0-31-gcbca977ea121-v5 to
> >>> be on top of current (the first step to moving to 1.7.0 or 1.7.1)
> >>> produced some test failures that don't exist when using the host dtc.
> >>> Can you confirm if dtc 1.7.0 is new enough for this syntax? We might
> >>> just need to change to building pylibfdt and not dtc as well (as having
> >>> pylibfdt come via system python or pipx is differently tricky it seems).
> >>
> >> The pipeline is at
> >> https://source.denx.de/u-boot/u-boot/-/pipelines/24243 and that's just
> >> the v5 branch currently under WIP/ rebased to then-current master.
> >
> > To push this as far as I can at least, there's now also
> > WIP/resync-dtc-v1.7.1-v1 which brings us to dtc-1.7.1 (good!) but also
> > some silent failure to boot on a least one of the TI K3 platforms I
> > have, and some other failures in CI too.
> >
> Hi Tom
>
> I rebase my "STM32 OF_UPSTREAM" series on top of your branch WIP/resync-dtc-v1.7.1-v1,
> that fixes the issue i described in my initial mail.
>
> Thanks for this update
Well, please note that branch is a problem. I have no idea why some
tests, and then some platforms fail. I also don't have the time to look
in to it. I posted this so that at least the groundwork is done for
someone else with motivation / need to finish fixing things.
--
Tom
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