Re: [PATCH v11 1/3] firmware: qcom_scm: Add API to get waitqueue IRQ info

[Mukesh Ojha]

On Wed, Dec 17, 2025 at 08:04:19PM +0530, Shivendra Pratap wrote:
> From: Unnathi Chalicheemala <unnathi.chalicheemala@xxxxxxxxxxxxxxxx>
> 
> Bootloader and firmware for SM8650 and older chipsets expect node
> name as "qcom_scm", in order to patch the wait queue IRQ information.
> However, DeviceTree uses node name "scm" and this mismatch prevents
> firmware from correctly identifying waitqueue IRQ information. Waitqueue
> IRQ is used for signaling between secure and non-secure worlds.
> 
> To resolve this, introduce qcom_scm_get_waitq_irq() that'll get the
> hardware IRQ number to be used from firmware instead of relying on data
> provided by devicetree, thereby bypassing the DeviceTree node name
> mismatch.
> 
> This hardware IRQ number is converted to a Linux IRQ number using newly
> qcom_scm_fill_irq_fwspec_params(). This Linux IRQ number is then
> supplied to the threaded_irq call.
> 
> Reviewed-by: Bartosz Golaszewski <brgl@xxxxxxxxxx>
> Signed-off-by: Unnathi Chalicheemala <unnathi.chalicheemala@xxxxxxxxxxxxxxxx>
> Signed-off-by: Shivendra Pratap <shivendra.pratap@xxxxxxxxxxxxxxxx>

Reviewed-by: Mukesh Ojha <mukesh.ojha@xxxxxxxxxxxxxxxx>

-- 
-Mukesh Ojha