hw/misc/stm32l4x5_rcc: Propagate period when enabling a clock
The "clock_set_mul_div" function doesn't propagate the clock period
to the children if it is changed (e.g. by enabling/disabling a clock
multiplexer).
This was overlooked during the implementation due to late changes.
This commit propagates the change if the multiplier or divider changes.
Fixes: ec7d83acbd ("hw/misc/stm32l4x5_rcc: Add an internal clock multiplexer object")
Signed-off-by: Arnaud Minier <arnaud.minier@telecom-paris.fr>
Signed-off-by: Inès Varhol <ines.varhol@telecom-paris.fr>
Message-ID: <20240317103918.44375-2-arnaud.minier@telecom-paris.fr>
[PMD: Check clock_set_mul_div() return value]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20240325152827.73817-4-philmd@linaro.org>
diff --git a/hw/misc/stm32l4x5_rcc.c b/hw/misc/stm32l4x5_rcc.c
index 49b90af..ed2dbd9 100644
--- a/hw/misc/stm32l4x5_rcc.c
+++ b/hw/misc/stm32l4x5_rcc.c
@@ -61,7 +61,7 @@
freq_multiplier = mux->divider;
}
- clock_set_mul_div(mux->out, freq_multiplier, mux->multiplier);
+ clk_changed |= clock_set_mul_div(mux->out, freq_multiplier, mux->multiplier);
clk_changed |= clock_set(mux->out, clock_get(current_source));
if (clk_changed) {
clock_propagate(mux->out);
