Re: [PATCH 0/2] arm64: dts: allwinner: fix Orange Pi Zero 3 PMIC interrupt routing

Hi Michal,

Dne nedelja, 8. marec 2026 ob 06:16:50 Srednjeevropski standardni čas je Michal Piekos napisal(a):

This fixes a kernel hang during boot on the Orange Pi Zero 3 caused by
incorrect interrupt routing for the AXP313A PMIC.

The PMIC interrupt on is connected to PL bank GPIO handled by the R_PIO
controller. However current dts routes the interrupts to PIO controller.
This causes the kernel to select wrong pinctrl instance when configuring
the interrupt which leads to invalid register access and a kernel hang
during boot.

Where did you get that info? Publicly available schematic clearly shows
PMIC interrupt pin being connected to PC9. Additionally, R_PIO controller
on H616 is very basic and has only pins PL0 and PL1, which are used for
PMIC communication already. Neither of those pins is interrupt capable.

The problem existed previously but became visible after the commit
01e10d0272b9 (pinctrl: sunxi: Implement gpiochip::get_direction()),
which causes gpiolib to call the gpiochip::get_direction() callback
during interrupt setup.

I think proposed solution just bypasses the problem, not actually fixes
it. Can you share kernel crash report?

Sidenote: Tested-by: tag doesn't have any value if you're also the author
of the patch. It's already implied that you tested your solution/improvements.

Best regards,
Jernej

Patch 1 declares R_PIO node as interrupt controller so it can be used as
interrupt parrent.

Patch 2 fixes the board device tree by routing the interrupt to R_PIO

---
Michal Piekos (2):
      arm64: dts: allwinner: h616: declare r_pio as interrupt controller
      arm64: dts: allwinner: orangepi-zero3: fix axp313 interrupt parrent

 arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi               | 2 ++
 arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero3.dts | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)
---
base-commit: 4ae12d8bd9a830799db335ee661d6cbc6597f838
change-id: 20260308-rc2-boot-hang-269e8546635b

Best regards,