Ivan Vecera a047497f95 dpll: zl3073x: Fix ref frequency setting ... The frequency for an input reference is computed as: frequency = freq_base * freq_mult * freq_ratio_m / freq_ratio_n Before commit 5bc02b190a ("dpll: zl3073x: Cache all reference properties in zl3073x_ref"), zl3073x_dpll_input_pin_frequency_set() explicitly wrote 1 to both the REF_RATIO_M and REF_RATIO_N hardware registers whenever a new frequency was set. This ensured the FEC ratio was always reset to 1:1 alongside the new base/multiplier values. The refactoring in that commit introduced zl3073x_ref_freq_set() to update the cached ref state, but this helper only sets freq_base and freq_mult without resetting freq_ratio_m and freq_ratio_n to 1. Because zl3073x_ref_state_set() uses a compare-and-write strategy, unchanged ratio fields are never written to the hardware. If the device previously had non-unity FEC ratio values, they remain in effect after a frequency change, resulting in an incorrect computed frequency. Explicitly set freq_ratio_m and freq_ratio_n to 1 in zl3073x_ref_freq_set() to restore the original behavior. Fixes: 5bc02b190a ("dpll: zl3073x: Cache all reference properties in zl3073x_ref") Signed-off-by: Ivan Vecera <ivecera@redhat.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20260216194007.680416-1-ivecera@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2026-02-17 17:06:51 -08:00
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zl3073x	dpll: zl3073x: Fix ref frequency setting	2026-02-17 17:06:51 -08:00
dpll_core.c	dpll: Add reference count tracking support	2026-02-05 15:57:46 +01:00
dpll_core.h	dpll: Add reference count tracking support	2026-02-05 15:57:46 +01:00
dpll_netlink.c	dpll: Add notifier chain for dpll events	2026-02-05 15:57:46 +01:00
dpll_netlink.h	dpll: add reference sync get/set	2025-06-27 16:38:02 -07:00
dpll_nl.c	dpll: add dpll_device op to set working mode	2026-01-19 12:04:53 -08:00
dpll_nl.h	tools: ynl-gen: add regeneration comment	2025-11-25 19:20:42 -08:00
Kconfig	dpll: Add reference count tracking support	2026-02-05 15:57:46 +01:00
Makefile	dpll: Add basic Microchip ZL3073x support	2025-07-09 19:08:52 -07:00