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Author	SHA1	Message	Date
Sunil V L	bc7a78f41b	lib/utils/cppc: Emulate REFERENCE_CTR and DELIVERED_CTR locally ... Currently, REFERENCE_CTR and DELIVERED_CTR are always read by sending an RPMI message to the controller. This does not scale well since these registers are typically polled frequently by CPU frequency governors. The reference counter can be simply the TIME csr, so it can be read locally without going over RPMI. If the fast channel is supported, the delivered counter can also be emulated locally: the fast channel exposes the current frequency, which is multiplied by the elapsed TIME csr ticks since the last read to calculate the delivered performance counter. Signed-off-by: Sunil V L <sunilvl@oss.qualcomm.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20260703050530.2460037-3-sunilvl@oss.qualcomm.com Signed-off-by: Anup Patel <anup@brainfault.org>	2026-08-20 17:57:47 +05:30
Sunil V L	6499c02254	lib/sbi/sbi_timer: Add sbi_timer_frequency() function ... Drivers and other library code sometimes need the timer frequency outside of lib/sbi/sbi_timer.c, but there is currently no accessor for it. Add sbi_timer_frequency() to expose the frequency of the registered timer device. Signed-off-by: Sunil V L <sunilvl@oss.qualcomm.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20260703050530.2460037-2-sunilvl@oss.qualcomm.com Signed-off-by: Anup Patel <anup@brainfault.org>	2026-08-20 17:57:45 +05:30