diff options
| -rw-r--r-- | arch/arm/cpu/armv8/imx8m/soc.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/imx8m/soc.c b/arch/arm/cpu/armv8/imx8m/soc.c index 1a1e908d00..8602c4a596 100644 --- a/arch/arm/cpu/armv8/imx8m/soc.c +++ b/arch/arm/cpu/armv8/imx8m/soc.c @@ -473,6 +473,37 @@ add_status: } } + /* Disable the CPU idle for A0 chip since the HW does not support it */ + if (is_soc_rev(CHIP_REV_1_0)) { + const char *nodes_path[] = { + "/cpus/cpu@0", + "/cpus/cpu@1", + "/cpus/cpu@2", + "/cpus/cpu@3", + }; + + int i = 0; + int rc; + int nodeoff; + + for (i = 0; i < ARRAY_SIZE(nodes_path); i++) { + nodeoff = fdt_path_offset(blob, nodes_path[i]); + if (nodeoff < 0) + continue; /* Not found, skip it */ + + printf("Found %s node\n", nodes_path[i]); + + rc = fdt_delprop(blob, nodeoff, "cpu-idle-states"); + if (rc) { + printf("Unable to update property %s:%s, err=%s\n", + nodes_path[i], "status", fdt_strerror(rc)); + } else { + printf("Remove %s:%s\n", + nodes_path[i], "cpu-idle-states"); + } + } + } + return ft_add_optee_node(blob, bd); } #endif |