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Date:	Thu, 10 Jul 2014 09:06:31 +0530
From:	Amit Kachhap <amit.kachhap@...il.com>
To:	Chanwoo Choi <cw00.choi@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:	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 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>

>> ---
>>  .../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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