[U-Boot] [PATCH v5 05/13] imx: mx7 dm thermal driver support
Stefano Babic
sbabic at denx.de
Sun Aug 23 18:04:19 CEST 2015
Hi Adrian,
On 11/08/2015 18:19, Adrian Alonso wrote:
> * 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 at freescale.com>
> Signed-off-by: Peng Fan <Peng.Fan at 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
> Changes for V5: 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(-)
>
Agree changing the name to CONFIG_IMX_THERMAL.
> diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c
> index e27546c..b0b75df 100644
> --- a/arch/arm/imx-common/cpu.c
> +++ b/arch/arm/imx-common/cpu.c
> @@ -154,14 +154,16 @@ 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,
> @@ -181,7 +183,7 @@ 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:
> @@ -198,6 +200,8 @@ 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 3c6c967..717f36e 100644
> --- a/drivers/thermal/imx_thermal.c
> +++ b/drivers/thermal/imx_thermal.c
> @@ -19,6 +19,14 @@
> #include <thermal.h>
> #include <imx_thermal.h>
>
Because this is a driver, and I guess that we can reuse it in future and
newer SOCs will have always this feature, I will prefer to remove CPU
related #ifdef (#ifdef CONFIG_MX6 and CONFIG_MX7).
Use in this case (even if sometimes they are defined at compile time)
the is_cpu_type() accessors, or one of the related functions. For example:
> +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)
Here - defines are quite independent, footprint also negligible without
ifdef.
> +#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);
> @@ -157,15 +231,27 @@ 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;
> + }
The same here.
> +#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 6a57841..98eb042 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
>
Best regards,
Stefano Babic
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