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Date:	Mon, 14 Jul 2014 08:49:15 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	Amit Kachhap <amit.kachhap@...il.com>
Cc:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Zhang Rui <rui.zhang@...el.com>,
	"Valentin, Eduardo" <eduardo.valentin@...com>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Tomasz Figa <t.figa@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	devicetree@...r.kernel.org,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jonghwa Lee <jonghwa3.lee@...sung.com>
Subject: Re: [PATCH] thermal: samsung: Add TMU support for Exynos3250 SoC

On 07/10/2014 12:36 PM, Amit Kachhap wrote:
> On Wed, Jul 9, 2014 at 8:30 AM, Chanwoo Choi <cw00.choi@...sung.com> wrote:
>> On 07/01/2014 09:33 AM, Chanwoo Choi wrote:
>>> This patch add registers, bit fields and compatible strings for Exynos3250 TMU
>>> (Thermal Management Unit). Exynos3250 uses the Cortex-A7 dual cores and has
>>> a target speed of 1.0 GHz.
>>>
>>> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
>>> [Add MUX address setting bits by Jonghwa Lee]
>>> Signed-off-by: Jonghwa Lee <jonghwa3.lee@...sung.com>
>>> Acked-by: Kyungmin Park <kyungmin.park@...sung.com>
> 
> Changes look fine to me.
> Reviewed-by: Amit Daniel Kachhap<amit.daniel@...sung.com>

Thanks for your review.

Best Regards,
Chanwoo Choi

> 
>>> ---
>>>  .../devicetree/bindings/thermal/exynos-thermal.txt |  1 +
>>>  drivers/thermal/samsung/exynos_tmu.c               |  7 +-
>>>  drivers/thermal/samsung/exynos_tmu.h               |  3 +-
>>>  drivers/thermal/samsung/exynos_tmu_data.c          | 89 ++++++++++++++++++++++
>>>  drivers/thermal/samsung/exynos_tmu_data.h          |  7 ++
>>>  5 files changed, 105 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
>>> index c949092..ae738f5 100644
>>> --- a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
>>> +++ b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
>>> @@ -3,6 +3,7 @@
>>>  ** Required properties:
>>>
>>>  - compatible : One of the following:
>>> +            "samsung,exynos3250-tmu"
>>>              "samsung,exynos4412-tmu"
>>>              "samsung,exynos4210-tmu"
>>>              "samsung,exynos5250-tmu"
>>> diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
>>> index 2412090..97ebc1e 100644
>>> --- a/drivers/thermal/samsung/exynos_tmu.c
>>> +++ b/drivers/thermal/samsung/exynos_tmu.c
>>> @@ -501,6 +501,10 @@ static irqreturn_t exynos_tmu_irq(int irq, void *id)
>>>
>>>  static const struct of_device_id exynos_tmu_match[] = {
>>>       {
>>> +             .compatible = "samsung,exynos3250-tmu",
>>> +             .data = (void *)EXYNOS3250_TMU_DRV_DATA,
>>> +     },
>>> +     {
>>>               .compatible = "samsung,exynos4210-tmu",
>>>               .data = (void *)EXYNOS4210_TMU_DRV_DATA,
>>>       },
>>> @@ -675,7 +679,8 @@ static int exynos_tmu_probe(struct platform_device *pdev)
>>>               goto err_clk_sec;
>>>       }
>>>
>>> -     if (pdata->type == SOC_ARCH_EXYNOS4210 ||
>>> +     if (pdata->type == SOC_ARCH_EXYNOS3250 ||
>>> +         pdata->type == SOC_ARCH_EXYNOS4210 ||
>>>           pdata->type == SOC_ARCH_EXYNOS4412 ||
>>>           pdata->type == SOC_ARCH_EXYNOS5250 ||
>>>           pdata->type == SOC_ARCH_EXYNOS5260 ||
>>> diff --git a/drivers/thermal/samsung/exynos_tmu.h b/drivers/thermal/samsung/exynos_tmu.h
>>> index edd08cf..1b4a644 100644
>>> --- a/drivers/thermal/samsung/exynos_tmu.h
>>> +++ b/drivers/thermal/samsung/exynos_tmu.h
>>> @@ -40,7 +40,8 @@ enum calibration_mode {
>>>  };
>>>
>>>  enum soc_type {
>>> -     SOC_ARCH_EXYNOS4210 = 1,
>>> +     SOC_ARCH_EXYNOS3250 = 1,
>>> +     SOC_ARCH_EXYNOS4210,
>>>       SOC_ARCH_EXYNOS4412,
>>>       SOC_ARCH_EXYNOS5250,
>>>       SOC_ARCH_EXYNOS5260,
>>> diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c
>>> index c1d81dc..aa8e0de 100644
>>> --- a/drivers/thermal/samsung/exynos_tmu_data.c
>>> +++ b/drivers/thermal/samsung/exynos_tmu_data.c
>>> @@ -90,6 +90,95 @@ struct exynos_tmu_init_data const exynos4210_default_tmu_data = {
>>>  };
>>>  #endif
>>>
>>> +#if defined(CONFIG_SOC_EXYNOS3250)
>>> +static const struct exynos_tmu_registers exynos3250_tmu_registers = {
>>> +     .triminfo_data = EXYNOS_TMU_REG_TRIMINFO,
>>> +     .triminfo_25_shift = EXYNOS_TRIMINFO_25_SHIFT,
>>> +     .triminfo_85_shift = EXYNOS_TRIMINFO_85_SHIFT,
>>> +     .tmu_ctrl = EXYNOS_TMU_REG_CONTROL,
>>> +     .test_mux_addr_shift = EXYNOS4412_MUX_ADDR_SHIFT,
>>> +     .buf_vref_sel_shift = EXYNOS_TMU_REF_VOLTAGE_SHIFT,
>>> +     .buf_vref_sel_mask = EXYNOS_TMU_REF_VOLTAGE_MASK,
>>> +     .therm_trip_mode_shift = EXYNOS_TMU_TRIP_MODE_SHIFT,
>>> +     .therm_trip_mode_mask = EXYNOS_TMU_TRIP_MODE_MASK,
>>> +     .therm_trip_en_shift = EXYNOS_TMU_THERM_TRIP_EN_SHIFT,
>>> +     .buf_slope_sel_shift = EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT,
>>> +     .buf_slope_sel_mask = EXYNOS_TMU_BUF_SLOPE_SEL_MASK,
>>> +     .core_en_shift = EXYNOS_TMU_CORE_EN_SHIFT,
>>> +     .tmu_status = EXYNOS_TMU_REG_STATUS,
>>> +     .tmu_cur_temp = EXYNOS_TMU_REG_CURRENT_TEMP,
>>> +     .threshold_th0 = EXYNOS_THD_TEMP_RISE,
>>> +     .threshold_th1 = EXYNOS_THD_TEMP_FALL,
>>> +     .tmu_inten = EXYNOS_TMU_REG_INTEN,
>>> +     .inten_rise0_shift = EXYNOS_TMU_INTEN_RISE0_SHIFT,
>>> +     .inten_rise1_shift = EXYNOS_TMU_INTEN_RISE1_SHIFT,
>>> +     .inten_rise2_shift = EXYNOS_TMU_INTEN_RISE2_SHIFT,
>>> +     .inten_fall0_shift = EXYNOS_TMU_INTEN_FALL0_SHIFT,
>>> +     .tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
>>> +     .tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
>>> +     .intclr_fall_shift = EXYNOS_TMU_CLEAR_FALL_INT_SHIFT,
>>> +     .intclr_rise_shift = EXYNOS_TMU_RISE_INT_SHIFT,
>>> +     .intclr_rise_mask = EXYNOS_TMU_RISE_INT_MASK,
>>> +     .intclr_fall_mask = EXYNOS_TMU_FALL_INT_MASK,
>>> +     .emul_con = EXYNOS_EMUL_CON,
>>> +     .emul_temp_shift = EXYNOS_EMUL_DATA_SHIFT,
>>> +     .emul_time_shift = EXYNOS_EMUL_TIME_SHIFT,
>>> +     .emul_time_mask = EXYNOS_EMUL_TIME_MASK,
>>> +};
>>> +
>>> +#define EXYNOS3250_TMU_DATA \
>>> +     .threshold_falling = 10, \
>>> +     .trigger_levels[0] = 70, \
>>> +     .trigger_levels[1] = 95, \
>>> +     .trigger_levels[2] = 110, \
>>> +     .trigger_levels[3] = 120, \
>>> +     .trigger_enable[0] = true, \
>>> +     .trigger_enable[1] = true, \
>>> +     .trigger_enable[2] = true, \
>>> +     .trigger_enable[3] = false, \
>>> +     .trigger_type[0] = THROTTLE_ACTIVE, \
>>> +     .trigger_type[1] = THROTTLE_ACTIVE, \
>>> +     .trigger_type[2] = SW_TRIP, \
>>> +     .trigger_type[3] = HW_TRIP, \
>>> +     .max_trigger_level = 4, \
>>> +     .gain = 8, \
>>> +     .reference_voltage = 16, \
>>> +     .noise_cancel_mode = 4, \
>>> +     .cal_type = TYPE_TWO_POINT_TRIMMING, \
> Looks that this SOC is using 2 point trimming.
> 
> Bartlomiej,
> 
> Please reformat your clean up series which is deleting this feature.
> https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg665748.html.
> 
> Regards,
> Amit D
> 
> 
>>> +     .efuse_value = 55, \
>>> +     .min_efuse_value = 40, \
>>> +     .max_efuse_value = 100, \
>>> +     .first_point_trim = 25, \
>>> +     .second_point_trim = 85, \
>>> +     .default_temp_offset = 50, \
>>> +     .freq_tab[0] = { \
>>> +             .freq_clip_max = 800 * 1000, \
>>> +             .temp_level = 70, \
>>> +     }, \
>>> +     .freq_tab[1] = { \
>>> +             .freq_clip_max = 400 * 1000, \
>>> +             .temp_level = 95, \
>>> +     }, \
>>> +     .freq_tab_count = 2, \
>>> +     .registers = &exynos3250_tmu_registers, \
>>> +     .features = (TMU_SUPPORT_EMULATION | \
>>> +                     TMU_SUPPORT_FALLING_TRIP | TMU_SUPPORT_READY_STATUS | \
>>> +                     TMU_SUPPORT_EMUL_TIME)
>>> +#endif
>>> +
>>> +#if defined(CONFIG_SOC_EXYNOS3250)
>>> +struct exynos_tmu_init_data const exynos3250_default_tmu_data = {
>>> +     .tmu_data = {
>>> +             {
>>> +                     EXYNOS3250_TMU_DATA,
>>> +                     .type = SOC_ARCH_EXYNOS3250,
>>> +                     .test_mux = EXYNOS4412_MUX_ADDR_VALUE,
>>> +             },
>>> +     },
>>> +     .tmu_count = 1,
>>> +};
>>> +#endif
>>> +
>>>  #if defined(CONFIG_SOC_EXYNOS4412) || defined(CONFIG_SOC_EXYNOS5250)
>>>  static const struct exynos_tmu_registers exynos4412_tmu_registers = {
>>>       .triminfo_data = EXYNOS_TMU_REG_TRIMINFO,
>>> diff --git a/drivers/thermal/samsung/exynos_tmu_data.h b/drivers/thermal/samsung/exynos_tmu_data.h
>>> index d268981..f0979e5 100644
>>> --- a/drivers/thermal/samsung/exynos_tmu_data.h
>>> +++ b/drivers/thermal/samsung/exynos_tmu_data.h
>>> @@ -148,6 +148,13 @@
>>>  #define EXYNOS5440_TMU_TH_RISE4_SHIFT                24
>>>  #define EXYNOS5440_EFUSE_SWAP_OFFSET         8
>>>
>>> +#if defined(CONFIG_SOC_EXYNOS3250)
>>> +extern struct exynos_tmu_init_data const exynos3250_default_tmu_data;
>>> +#define EXYNOS3250_TMU_DRV_DATA (&exynos3250_default_tmu_data)
>>> +#else
>>> +#define EXYNOS3250_TMU_DRV_DATA (NULL)
>>> +#endif
>>> +
>>>  #if defined(CONFIG_CPU_EXYNOS4210)
>>>  extern struct exynos_tmu_init_data const exynos4210_default_tmu_data;
>>>  #define EXYNOS4210_TMU_DRV_DATA (&exynos4210_default_tmu_data)
>>>
>>
>> Ping.
>>
>> Best Regards,
>> Chanwoo Choi
>> --
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