[U-Boot] [PATCH 6/8] imx8: cpu: get temperature when print cpu desc

Peng Fan
2019-04-12T07:55:06Z

Read the temperature when print cpu inforation.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
arch/arm/mach-imx/imx8/cpu.c | 35 +++++++++++++++++++++++++++++++++--
1 file changed, 33 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c
index 4bbc956f9d..25b010489b 100644
--- 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>
@@ -571,15 +572,45 @@ const char *get_core_name(void)
return "?";
}

+#if defined(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;
+}
+#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@%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;
}
--
2.16.4