imx8m: soc: probe clock device in arch_cpu_init_dm

Because we need to get cpu freq in print_cpuinfo at very early stage,
so we need to make sure the ccm be probed.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c
index 3a54db4..f904049 100644 (file)
--- a/arch/arm/mach-imx/imx8m/soc.c
+++ b/arch/arm/mach-imx/imx8m/soc.c
@@ -14,6 +14,7 @@
 #include <asm/mach-imx/boot_mode.h>
 #include <asm/mach-imx/syscounter.h>
 #include <asm/armv8/mmu.h>
+#include <dm/uclass.h>
 #include <errno.h>
 #include <fdt_support.h>
 #include <fsl_wdog.h>
@@ -228,6 +229,22 @@ static void imx_set_wdog_powerdown(bool enable)
        writew(enable, &wdog3->wmcr);
 }
 
+int arch_cpu_init_dm(void)
+{
+       struct udevice *dev;
+       int ret;
+
+       ret = uclass_get_device_by_name(UCLASS_CLK,
+                                       "clock-controller@30380000",
+                                       &dev);
+       if (ret < 0) {
+               printf("Failed to find clock node. Check device tree\n");
+               return ret;
+       }
+
+       return 0;
+}
+
 int arch_cpu_init(void)
 {
        struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;