clk: stm32mp: enable RTCAPB clock for dual-core chips
In order to correctly manage the bring-up of non boot CPUs, the RTCAPB
clock needs to be enabled.
It controls the access to backup registers, where the CPU entrypoint
will be stored.
Change-Id: Ifeeceb4faf64bc9e0778030444f437cc0bb27272
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
diff --git a/drivers/st/clk/stm32mp1_clk.c b/drivers/st/clk/stm32mp1_clk.c
index 76e6e6f..f3b9f0c 100644
--- a/drivers/st/clk/stm32mp1_clk.c
+++ b/drivers/st/clk/stm32mp1_clk.c
@@ -1912,9 +1912,18 @@
}
}
+static void sync_earlyboot_clocks_state(void)
+{
+ if (!stm32mp_is_single_core()) {
+ stm32mp1_clk_enable_secure(RTCAPB);
+ }
+}
+
int stm32mp1_clk_probe(void)
{
stm32mp1_osc_init();
+ sync_earlyboot_clocks_state();
+
return 0;
}