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refactor(st-clock): support deactivated STGEN in stm32mp_stgen_config

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Update function stm32mp_stgen_config() to support deactivated STGEN
when frequency is 0, for example on STOP2 exit for STM32MP25.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: Id371c4602a614bbfa0ecc7ce2d2e0ac5261e1d52
This commit is contained in:
Patrick Delaunay 2023-10-11 17:12:53 +02:00 • committed by Yann Gautier
parent bfe8a12eea
commit 3b3a9afdeb
1 changed files with 4 additions and 2 deletions

6
drivers/st/clk/stm32mp_clkfunc.c
View file

@ -350,9 +350,11 @@ void stm32mp_stgen_config(unsigned long rate)
}
mmio_clrbits_32(STGEN_BASE + CNTCR_OFF, CNTCR_EN);
counter = stm32mp_stgen_get_counter() * rate / cntfid0;
stgen_set_counter(counter);
if (cntfid0 != 0U) {
counter = stm32mp_stgen_get_counter() * rate / cntfid0;
stgen_set_counter(counter);
}
mmio_write_32(STGEN_BASE + CNTFID_OFF, rate);
mmio_setbits_32(STGEN_BASE + CNTCR_OFF, CNTCR_EN);