imx8: cpu: get temperature when print cpu desc

Read the temperature when print cpu inforation.

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

diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c
index aa78444d8ffcdbf0a3fb22f4d259c347d0825562..f2fa262ac8981cee91253bbc42283121c5a155b9 100644 (file)
--- a/arch/arm/mach-imx/imx8/cpu.c
+++ b/arch/arm/mach-imx/imx8/cpu.c
@@ -11,6 +11,7 @@
 #include <dm/lists.h>
 #include <dm/uclass.h>
 #include <errno.h>
+#include <thermal.h>
 #include <asm/arch/sci/sci.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/arch-imx/cpu.h>
@@ -573,15 +574,50 @@ const char *get_core_name(void)
                return "?";
 }
 
+#if IS_ENABLED(CONFIG_IMX_SCU_THERMAL)
+static int cpu_imx_get_temp(void)
+{
+       struct udevice *thermal_dev;
+       int cpu_tmp, ret;
+
+       ret = uclass_get_device_by_name(UCLASS_THERMAL, "cpu-thermal0",
+                                       &thermal_dev);
+
+       if (!ret) {
+               ret = thermal_get_temp(thermal_dev, &cpu_tmp);
+               if (ret)
+                       return 0xdeadbeef;
+       } else {
+               return 0xdeadbeef;
+       }
+
+       return cpu_tmp;
+}
+#else
+static int cpu_imx_get_temp(void)
+{
+       return 0;
+}
+#endif
+
 int cpu_imx_get_desc(struct udevice *dev, char *buf, int size)
 {
        struct cpu_imx_platdata *plat = dev_get_platdata(dev);
+       int ret;
 
        if (size < 100)
                return -ENOSPC;
 
-       snprintf(buf, size, "NXP i.MX8%s Rev%s %s at %u MHz\n",
-                plat->type, plat->rev, plat->name, plat->freq_mhz);
+       ret = snprintf(buf, size, "NXP i.MX8%s Rev%s %s at %u MHz",
+                      plat->type, plat->rev, plat->name, plat->freq_mhz);
+
+       if (IS_ENABLED(CONFIG_IMX_SCU_THERMAL)) {
+               buf = buf + ret;
+               size = size - ret;
+               ret = snprintf(buf, size, " at %dC", cpu_imx_get_temp());
+       }
+
+       snprintf(buf + ret, size - ret, "\n");
 
        return 0;
 }