arm: mach-k3: am62p: Fixup a53 max cpu frequency by speed-grade
AM62P SoC has multiple speed grades. Add function to delete
non-relevant CPU frequency nodes, based on the information
retrieved from hardware registers. Fastest grade's maximum
frequency also depends on PMIC voltage, hence to simplify
implementation use the smaller value.
Signed-off-by: Aparna Patra <a-patra@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
diff --git a/arch/arm/mach-k3/am62px/am62p5_fdt.c b/arch/arm/mach-k3/am62px/am62p5_fdt.c
index 96194ce..2c40fa5 100644
--- a/arch/arm/mach-k3/am62px/am62p5_fdt.c
+++ b/arch/arm/mach-k3/am62px/am62p5_fdt.c
@@ -74,12 +74,24 @@
}
}
+static void fdt_fixup_cpu_freq_nodes_am62p(void *blob, int max_freq)
+{
+ if (max_freq >= 1250000000)
+ return;
+
+ if (max_freq <= 1000000000) {
+ fdt_del_node_path(blob, "/opp-table/opp-1250000000");
+ fdt_del_node_path(blob, "/opp-table/opp-1400000000");
+ }
+}
+
int ft_system_setup(void *blob, struct bd_info *bd)
{
fdt_fixup_cores_wdt_nodes_am62p(blob, k3_get_core_nr());
fdt_fixup_video_codec_nodes_am62p(blob, k3_has_video_codec());
fdt_fixup_canfd_nodes_am62p(blob, k3_has_canfd());
fdt_fixup_thermal_zone_nodes_am62p(blob, k3_get_max_temp());
+ fdt_fixup_cpu_freq_nodes_am62p(blob, k3_get_a53_max_frequency());
fdt_fixup_reserved(blob, "tfa", CONFIG_K3_ATF_LOAD_ADDR, 0x80000);
fdt_fixup_reserved(blob, "optee", CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);