[PATCH v5 2/2] PCI: mediatek-gen3: Add 2-lanes mode support for Airoha AN7581

[Bjorn Helgaas]

On Thu, Aug 06, 2026 at 06:53:32PM +0200, Christian Marangi wrote:
> The Airoha AN7581 SoC supports configuring the first PCIe0 lane to 2-lanes
> mode (x2 link) by bonding it with the second PCIe lane (PCIe1). This is
> done by configuring the PCIe MUX in the SCU register.
> 
> To correctly configure PCIe0 in x2 link, define in DT the following
> additional properties:
> 
>   - additional reg, 'sec-pcie-mac' for the secondary PCIe.
>   - PERSTOUT reset for both main and secondary PCIE0, called 'perstout' and
>     'sec-perstout'
>   - 'airoha,scu' property to correctly configure the SCU register for the
>     PCIe MUX
>   - 'num-lanes' set to '2' to enable PCIe0 in x2 link
> 
> In such configuration the EQ preset are configured to the same values.
> 
> To permit correct configuration of the PCIe link, additional logic is added
> to assert and deassert the PERSTOUT resets. Support of these additional
> reset was introduced in Airoha clk driver with commit
> 6712f48eb3a1 ("clk: en7523: add support for dedicated PCIe PERSTOUT reset")
> and on backporting of this commit also the clk driver change will be
> needed.

I don't see 6712f48eb3a1 in upstream or linux-next.  Is this SHA1
going to valid if we merge this for v7.3?