Re: [PATCH] clk: ultrarisc: Register DP1000 clock provider earlier

[Brian Masney <bmasney@redhat.com>]

On Thu, Aug 20, 2026 at 10:50:47AM +0800, Jia Wang wrote:
> The DP1000 PCIe and clock drivers both register at the device initcall
> level. Since the PCIe driver is linked first, its probe runs before the
> clock provider is available and defers.
> 
> sysfb_init() runs at the same initcall level before deferred probes are
> retried. It claims the firmware framebuffer aperture, so the later PCIe
> host probe cannot allocate the overlapping prefetchable window and the
> GPU is not enumerated.
> 
> Register the clock provider with subsys_initcall() when built in so PCIe
> host probing completes before sysfb_init(). Keep module builds using the
> normal module init and exit paths.
> 
> Fixes: 3948a36be42b ("clk: ultrarisc: Add DP1000 clock driver")
> Signed-off-by: Jia Wang <wangjia@ultrarisc.com>

Reviewed-by: Brian Masney <bmasney@redhat.com>

I see this same pattern is also used by lots of qcom gcc drivers, 4
Renesas drivers, and a few other drivers.

Brian