Re: [PATCH v2] arm64: dts: qcom: sda660-inforce-ifc6560: fix ADV7535 interrupt pin

[Dmitry Baryshkov]

On Mon, Oct 19, 2026 at 05:30:08PM +0300, Dmitry Baryshkov wrote:
> Probing the ADV7535 HDMI bridge fails on the IFC6560:
> 
>   gpio gpiochip3: (800f000.spmi:pmic@2:gpio@c000): gpiochip_lock_as_irq: tried to flag a GPIO set as output for IRQ
>   gpio gpiochip3: (800f000.spmi:pmic@2:gpio@c000): unable to lock HW IRQ 10 for IRQ
> 
> The bridge's interrupt line is PM660L GPIO11, but the board never
> configures that pad. pmic_gpio_populate() reads back the state left by
> the bootloader, which is PMIC_GPIO_MODE_DIGITAL_OUTPUT, so
> pmic_gpio_get_direction() reports GPIO_LINE_DIRECTION_OUT and
> gpiochip_lock_as_irq() refuses the line. Requesting the interrupt then
> fails and the bridge does not probe.
> 
> Add a default pinctrl state switching the pad to digital input, applied
> by pinctrl_bind_pins() before the driver requests the interrupt. The
> ADV7535 INT pin is open-drain and pulled up on the board, so leave the
> internal bias disabled.
> 
> Fixes: 34279d6e3f32 ("arm64: dts: qcom: sdm660: Add initial Inforce IFC6560 board support")
> Reviewed-by: Abel Vesa <abel.vesa@xxxxxxxxxxxxxxxx>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> ---
> Changes in v2:
> - Dropped extra empty line (Konrad)
> - Added a note about pull-up for the IRQ line present on the PCB.
> - Link to v1: https://patch.msgid.link/20260920-ifc6560-adv-v1-1-89b1435d00c2@xxxxxxxxxxxxxxxx
> ---
>  arch/arm64/boot/dts/qcom/sda660-inforce-ifc6560.dts | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
Other than Sashiko's mention of output-disable, I'd also need to correct
the PMIC that provides a GPIO, so there will be a v3.

-- 
With best wishes
Dmitry