[PATCH v4 3/3] clk: stm32: Update clock management for STM32MP13/25

[Patrick DELAUNAY]

Hi,

On 1/16/26 19:57, Patrice Chotard wrote:
> During clock's registration, clock's name are used to establish parent -
> child relation. On STM32MP13 and STM32MP25, most of SCMI clocks are parent
> clocks.
>
> Since commit fdb1bffe2827 ("clk: scmi: Postpone clock name resolution"),
> all scmi clocks are named by default "scmi-%zu" until they are enabled,
> it breaks clocks registration and boot process for STM32MP13/25
> platforms.
>
> Rework the STM32 core clock driver and STM32MP13/25 clock description
> to use clock index instead of their real name.
>
> Introduce struct clk_parent_data which allows to identify parent clock
> either by index or by name. Name is only used for particular clocks
> provided by IP which are clock provider as i2s/i2s_ckin, usb0/ck_usbo_48m,
> and ltdc/ck_ker_ltdc.
>
> STM32_GATE() and STM32_COMPOSITE_NOMUX macros are updated in order to
> use parent clock index.
>
> As STM32MP13 supports both SPL and SCMI boot, keep using an array
> with clock's name for SPL.
>
> Fixes: fdb1bffe2827 ("clk: scmi: Postpone clock name resolution")
> Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
> ---
>   drivers/clk/stm32/clk-stm32-core.c | 116 +++++++++--
>   drivers/clk/stm32/clk-stm32-core.h |  42 ++--
>   drivers/clk/stm32/clk-stm32mp13.c  | 417 ++++++++++++++++++++++++++-----------
>   drivers/clk/stm32/clk-stm32mp25.c  | 405 +++++++++++++++++++++--------------
>   4 files changed, 671 insertions(+), 309 deletions(-)
>

Reviewed-by: Patrick Delaunay <patrick.delaunay at foss.st.com>

Thanks
Patrick