* Add thermal driver support for imx7 SoC read_cpu_temperature is SoC dependent * Redefine config macro to support imx7 and imx6 SoC
Signed-off-by: Adrian Alonso aalonso@freescale.com Signed-off-by: Peng Fan Peng.Fan@freescale.com --- Changes for V2: - Rework patch so it can be applyed on top of patch imx6: standardise OCOTP and fuse config to mx6_common Changes for V3: Resend Changes for V4: Resend
arch/arm/imx-common/cpu.c | 10 ++-- drivers/thermal/Makefile | 2 +- drivers/thermal/imx_thermal.c | 100 +++++++++++++++++++++++++++++++++++--- include/configs/embestmx6boards.h | 2 +- include/configs/gw_ventana.h | 2 +- include/configs/mx6cuboxi.h | 2 +- include/configs/mx6sabre_common.h | 2 +- include/configs/mx6slevk.h | 2 +- include/configs/mx6sxsabresd.h | 2 +- include/configs/tbs2910.h | 2 +- 10 files changed, 108 insertions(+), 18 deletions(-)
diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c index 5e56cfe..2e803f3 100644 --- a/arch/arm/imx-common/cpu.c +++ b/arch/arm/imx-common/cpu.c @@ -148,14 +148,16 @@ int print_cpuinfo(void) u32 cpurev; __maybe_unused u32 max_freq;
-#if defined(CONFIG_MX6) && defined(CONFIG_IMX6_THERMAL) +#if defined(CONFIG_IMX_THERMAL) struct udevice *thermal_dev; - int cpu_tmp, minc, maxc, ret; + int cpu_tmp, ret; #endif
cpurev = get_cpu_rev();
#if defined(CONFIG_MX6) + int minc, maxc; + printf("CPU: Freescale i.MX%s rev%d.%d", get_imx_type((cpurev & 0xFF000) >> 12), (cpurev & 0x000F0) >> 4, @@ -175,7 +177,7 @@ int print_cpuinfo(void) mxc_get_clock(MXC_ARM_CLK) / 1000000); #endif
-#if defined(CONFIG_MX6) && defined(CONFIG_IMX6_THERMAL) +#if defined(CONFIG_MX6) && defined(CONFIG_IMX_THERMAL) puts("CPU: "); switch (get_cpu_temp_grade(&minc, &maxc)) { case TEMP_AUTOMOTIVE: @@ -192,6 +194,8 @@ int print_cpuinfo(void) break; } printf("(%dC to %dC)", minc, maxc); +#endif +#if defined(CONFIG_IMX_THERMAL) ret = uclass_get_device(UCLASS_THERMAL, 0, &thermal_dev); if (!ret) { ret = thermal_get_temp(thermal_dev, &cpu_tmp); diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 6d4cacd..d768f5e 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -6,4 +6,4 @@ #
obj-$(CONFIG_DM_THERMAL) += thermal-uclass.o -obj-$(CONFIG_IMX6_THERMAL) += imx_thermal.o +obj-$(CONFIG_IMX_THERMAL) += imx_thermal.o diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index 0d893c9..046c094 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -19,6 +19,14 @@ #include <thermal.h> #include <imx_thermal.h>
+struct thermal_data { + unsigned int fuse; + int critical; + int minc; + int maxc; +}; + +#if defined(CONFIG_MX6) /* board will busyloop until this many degrees C below CPU max temperature */ #define TEMPERATURE_HOT_DELTA 5 /* CPU maxT - 5C */ #define FACTOR0 10000000 @@ -34,13 +42,6 @@ #define MISC0_REFTOP_SELBIASOFF (1 << 3) #define TEMPSENSE1_MEASURE_FREQ 0xffff
-struct thermal_data { - unsigned int fuse; - int critical; - int minc; - int maxc; -}; - static int read_cpu_temperature(struct udevice *dev) { int temperature; @@ -124,6 +125,79 @@ static int read_cpu_temperature(struct udevice *dev) return temperature; }
+#elif defined(CONFIG_MX7) +#define TEMPERATURE_MIN -40 +#define TEMPERATURE_HOT 85 +#define TEMPERATURE_MAX 125 +#define MEASURE_FREQ 327 + +static int read_cpu_temperature(struct udevice *dev) +{ + unsigned int reg, tmp, start; + unsigned int raw_25c, te1; + int temperature; + unsigned int *priv = dev_get_priv(dev); + u32 fuse = *priv; + struct mxc_ccm_anatop_reg *ccm_anatop = (struct mxc_ccm_anatop_reg *) + ANATOP_BASE_ADDR; + /* + * fuse data layout: + * [31:21] sensor value @ 25C + * [20:18] hot temperature value + * [17:9] sensor value of room + * [8:0] sensor value of hot + */ + + raw_25c = fuse >> 21; + if (raw_25c == 0) + raw_25c = 25; + + te1 = (fuse >> 9) & 0x1ff; + + /* + * now we only use single measure, every time we read + * the temperature, we will power on/down anadig thermal + * module + */ + writel(TEMPMON_HW_ANADIG_TEMPSENSE1_POWER_DOWN_MASK, &ccm_anatop->tempsense1_clr); + writel(PMU_REF_REFTOP_SELFBIASOFF_MASK, &ccm_anatop->ref_set); + + /* write measure freq */ + reg = readl(&ccm_anatop->tempsense1); + reg &= ~TEMPMON_HW_ANADIG_TEMPSENSE1_MEASURE_FREQ_MASK; + reg |= TEMPMON_HW_ANADIG_TEMPSENSE1_MEASURE_FREQ(MEASURE_FREQ); + writel(reg, &ccm_anatop->tempsense1); + + writel(TEMPMON_HW_ANADIG_TEMPSENSE1_MEASURE_TEMP_MASK, &ccm_anatop->tempsense1_clr); + writel(TEMPMON_HW_ANADIG_TEMPSENSE1_FINISHED_MASK, &ccm_anatop->tempsense1_clr); + writel(TEMPMON_HW_ANADIG_TEMPSENSE1_MEASURE_TEMP_MASK, &ccm_anatop->tempsense1_set); + + start = get_timer(0); + /* Wait max 100ms */ + do { + /* + * Since we can not rely on finish bit, use 1ms delay to get + * temperature. From RM, 17us is enough to get data, but + * to gurantee to get the data, delay 100ms here. + */ + reg = readl(&ccm_anatop->tempsense1); + tmp = (reg & TEMPMON_HW_ANADIG_TEMPSENSE1_TEMP_VALUE_MASK) + >> TEMPMON_HW_ANADIG_TEMPSENSE1_TEMP_VALUE_SHIFT; + } while (get_timer(0) < (start + 100)); + + writel(TEMPMON_HW_ANADIG_TEMPSENSE1_FINISHED_MASK, &ccm_anatop->tempsense1_clr); + + /* power down anatop thermal sensor */ + writel(TEMPMON_HW_ANADIG_TEMPSENSE1_POWER_DOWN_MASK, &ccm_anatop->tempsense1_set); + writel(PMU_REF_REFTOP_SELFBIASOFF_MASK, &ccm_anatop->ref_clr); + + /* Single point */ + temperature = tmp - (te1 - raw_25c); + + return temperature; +} +#endif + int imx_thermal_get_temp(struct udevice *dev, int *temp) { struct thermal_data *priv = dev_get_priv(dev); @@ -161,15 +235,27 @@ static int imx_thermal_probe(struct udevice *dev) /* Read Temperature calibration data fuse */ fuse_read(pdata->fuse_bank, pdata->fuse_word, &fuse);
+#if defined(CONFIG_MX6) /* Check for valid fuse */ if (fuse == 0 || fuse == ~0) { printf("CPU: Thermal invalid data, fuse: 0x%x\n", fuse); return -EPERM; } +#elif defined(CONFIG_MX7) + /* No Calibration data in FUSE? */ + if ((fuse & 0x3ffff) == 0) { + printf("CPU: Thermal invalid data, fuse: 0x%x\n", fuse); + return -EPERM; + } +#else +#error "Not support thermal driver" +#endif
+#if defined(CONFIG_MX6) /* set critical cooling temp */ get_cpu_temp_grade(&priv->minc, &priv->maxc); priv->critical = priv->maxc - TEMPERATURE_HOT_DELTA; +#endif priv->fuse = fuse;
enable_thermal_clk(); diff --git a/include/configs/embestmx6boards.h b/include/configs/embestmx6boards.h index 12744a6..58cee96 100644 --- a/include/configs/embestmx6boards.h +++ b/include/configs/embestmx6boards.h @@ -19,7 +19,7 @@
#define PHYS_SDRAM_SIZE (1u * 1024 * 1024 * 1024)
-#define CONFIG_IMX6_THERMAL +#define CONFIG_IMX_THERMAL
/* Size of malloc() pool */ #define CONFIG_SYS_MALLOC_LEN (10 * SZ_1M) diff --git a/include/configs/gw_ventana.h b/include/configs/gw_ventana.h index 7c90812..397a5ab 100644 --- a/include/configs/gw_ventana.h +++ b/include/configs/gw_ventana.h @@ -57,7 +57,7 @@ #define CONFIG_CMD_GPIO
/* Thermal */ -#define CONFIG_IMX6_THERMAL +#define CONFIG_IMX_THERMAL
/* Serial */ #define CONFIG_MXC_UART diff --git a/include/configs/mx6cuboxi.h b/include/configs/mx6cuboxi.h index 634a09f..6e89dd1 100644 --- a/include/configs/mx6cuboxi.h +++ b/include/configs/mx6cuboxi.h @@ -14,7 +14,7 @@ #define CONFIG_SPL_MMC_SUPPORT #include "imx6_spl.h"
-#define CONFIG_IMX6_THERMAL +#define CONFIG_IMX_THERMAL
#define CONFIG_SYS_MALLOC_LEN (10 * SZ_1M) #define CONFIG_BOARD_EARLY_INIT_F diff --git a/include/configs/mx6sabre_common.h b/include/configs/mx6sabre_common.h index 8007044..ff24027 100644 --- a/include/configs/mx6sabre_common.h +++ b/include/configs/mx6sabre_common.h @@ -11,7 +11,7 @@
#include "mx6_common.h"
-#define CONFIG_IMX6_THERMAL +#define CONFIG_IMX_THERMAL
/* Size of malloc() pool */ #define CONFIG_SYS_MALLOC_LEN (10 * SZ_1M) diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h index 3cecd94..58e59d8 100644 --- a/include/configs/mx6slevk.h +++ b/include/configs/mx6slevk.h @@ -190,6 +190,6 @@ #define CONFIG_SYS_MMC_ENV_DEV 1 /* SDHC2*/ #endif
-#define CONFIG_IMX6_THERMAL +#define CONFIG_IMX_THERMAL
#endif /* __CONFIG_H */ diff --git a/include/configs/mx6sxsabresd.h b/include/configs/mx6sxsabresd.h index 848bdcd..381eaa2 100644 --- a/include/configs/mx6sxsabresd.h +++ b/include/configs/mx6sxsabresd.h @@ -176,7 +176,7 @@ #define CONFIG_PCIE_IMX_POWER_GPIO IMX_GPIO_NR(2, 1) #endif
-#define CONFIG_IMX6_THERMAL +#define CONFIG_IMX_THERMAL
#define CONFIG_CMD_TIME
diff --git a/include/configs/tbs2910.h b/include/configs/tbs2910.h index 14985f8..4f390c3 100644 --- a/include/configs/tbs2910.h +++ b/include/configs/tbs2910.h @@ -21,7 +21,7 @@ #define CONFIG_SYS_PROMPT "Matrix U-Boot> " #define CONFIG_SYS_HZ 1000
-#define CONFIG_IMX6_THERMAL +#define CONFIG_IMX_THERMAL
/* Physical Memory Map */ #define CONFIG_NR_DRAM_BANKS 1