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| author | Ye.Li <B37916@freescale.com> | 2014-11-20 21:14:14 +0800 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2014-11-21 15:30:12 +0100 |
| commit | 7a264168473b8a9ad94352d55a0392ae251676a8 (patch) | |
| tree | 0bf7a7c8374ab2ad281bccfa0fea8747e48650c5 | |
| parent | e3568d2ecadda3e6c24ffab1670b77763df7419f (diff) | |
| download | u-boot-imx-7a264168473b8a9ad94352d55a0392ae251676a8.zip u-boot-imx-7a264168473b8a9ad94352d55a0392ae251676a8.tar.gz u-boot-imx-7a264168473b8a9ad94352d55a0392ae251676a8.tar.bz2 | |
mx6: thermal: Check cpu temperature via thermal sensor
Add imx6 thermal device to mx6 soc file. Read the cpu temperature
using this device to access onchip thermal sensor.
Signed-off-by: Ye.Li <B37916@freescale.com>
Signed-off-by: Nitin Garg <nitin.garg@freescale.com>
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 15 | ||||
| -rw-r--r-- | arch/arm/imx-common/cpu.c | 21 |
2 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index 5fd2a63..5f5f497 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -22,6 +22,8 @@ #include <asm/arch/mxc_hdmi.h> #include <asm/arch/crm_regs.h> #include <asm/bootm.h> +#include <dm.h> +#include <imx_thermal.h> enum ldo_reg { LDO_ARM, @@ -37,6 +39,19 @@ struct scu_regs { u32 fpga_rev; }; +#if defined(CONFIG_IMX6_THERMAL) +static const struct imx_thermal_plat imx6_thermal_plat = { + .regs = (void *)ANATOP_BASE_ADDR, + .fuse_bank = 1, + .fuse_word = 6, +}; + +U_BOOT_DEVICE(imx6_thermal) = { + .name = "imx_thermal", + .platdata = &imx6_thermal_plat, +}; +#endif + u32 get_nr_cpus(void) { struct scu_regs *scu = (struct scu_regs *)SCU_BASE_ADDR; diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c index 24740b8..8b2dfca 100644 --- a/arch/arm/imx-common/cpu.c +++ b/arch/arm/imx-common/cpu.c @@ -17,6 +17,7 @@ #include <asm/arch/sys_proto.h> #include <asm/arch/crm_regs.h> #include <ipu_pixfmt.h> +#include <thermal.h> #ifdef CONFIG_FSL_ESDHC #include <fsl_esdhc.h> @@ -134,6 +135,11 @@ int print_cpuinfo(void) { u32 cpurev; +#if defined(CONFIG_MX6) && defined(CONFIG_IMX6_THERMAL) + struct udevice *thermal_dev; + int cpu_tmp, ret; +#endif + cpurev = get_cpu_rev(); printf("CPU: Freescale i.MX%s rev%d.%d at %d MHz\n", @@ -141,6 +147,21 @@ int print_cpuinfo(void) (cpurev & 0x000F0) >> 4, (cpurev & 0x0000F) >> 0, mxc_get_clock(MXC_ARM_CLK) / 1000000); + +#if defined(CONFIG_MX6) && defined(CONFIG_IMX6_THERMAL) + ret = uclass_get_device(UCLASS_THERMAL, 0, &thermal_dev); + if (!ret) { + ret = thermal_get_temp(thermal_dev, &cpu_tmp); + + if (!ret) + printf("CPU: Temperature %d C\n", cpu_tmp); + else + printf("CPU: Temperature: invalid sensor data\n"); + } else { + printf("CPU: Temperature: Can't find sensor device\n"); + } +#endif + printf("Reset cause: %s\n", get_reset_cause()); return 0; } |