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b6e520b2a8
With the T-HEAD C9XX cores being designed before or during ratification of the SSCOFPMF extension, they implement a PMU extension that behaves very similar but not equal to it by providing overflow interrupts though in a slightly different registers format. The sun20i-d1 is using this core. So implement the necessary overrides to allow its pmu to be used via the standard sbi-pmu extension. For now it's also the only soc using this core, so keep the additional code in the d1-space for now. Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Guo Ren <guoren@kernel.org> Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de>