Re: [PATCH] pinctrl: qcom: nord: fix GPIO interrupt target width

[Shawn Guo]

On Wed, Sep 16, 2026 at 04:57:20PM +0800, Zhangfei Gao wrote:
> The TARGET_PROC field in the Nord GPIO_INTR_CFG registers occupies bits
> 11:8. Describe it as four bits wide so the common Qualcomm pinctrl code
> clears the complete field before routing an interrupt to the application
> processor.
> 
> Without intr_target_width, the common code uses its three-bit default
> mask. Since GPIO_INTR_CFG resets with TARGET_PROC set to 0xf (NONE), bit
> 11 remains set when the driver programs HMSS target 3. The resulting
> target is 0xb (HPASS_DSP_1), observed as an interrupt configuration value
> of 0xb1b instead of 0x31b.
> 
> The GPIO interrupt status is consequently latched, but the HMSS TLMM
> summary interrupt at GIC SPI 208 is never asserted. This affects all Nord
> GPIO interrupts using the TLMM summary path, including the Ethernet PHY
> interrupts on GPIO55 and GPIO141.
> 
> Fixes: c24dd0826f06 ("pinctrl: qcom: add the TLMM driver for the Nord platforms")
> Signed-off-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxxxxxxxx>

Reviewed-by: Shawn Guo <shengchao.guo@xxxxxxxxxxxxxxxx>