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SubjectRe: [PATCH 2/5] thermal: rockchip: Support the RV1108 SoC in thermal driver
From
Date
在 2017年09月15日 10:10, Caesar Wang 写道:
> Hi Rocky,
>
> 在 2017年08月24日 18:27, Rocky Hao 写道:
>> RV1108 SOC has one Temperature Sensor for CPU.
>>
>> Signed-off-by: Rocky Hao <rocky.hao@rock-chips.com>

Reviewed-by: Caesar Wang <wxt@rock-chips.com>

>> ---
>> drivers/thermal/rockchip_thermal.c | 67
>> ++++++++++++++++++++++++++++++++++++++
>> 1 file changed, 67 insertions(+)
>>
>> diff --git a/drivers/thermal/rockchip_thermal.c
>> b/drivers/thermal/rockchip_thermal.c
>> index 9da3e1819210..299a8ade71fa 100644
>> --- a/drivers/thermal/rockchip_thermal.c
>> +++ b/drivers/thermal/rockchip_thermal.c
>> @@ -242,6 +242,45 @@ struct tsadc_table {
>> int temp;
>> };
>> +static const struct tsadc_table rv1108_table[] = {
>> + {0, -40000},
>> + {374, -40000},
>> + {382, -35000},
>> + {389, -30000},
>> + {397, -25000},
>> + {405, -20000},
>> + {413, -15000},
>> + {421, -10000},
>> + {429, -5000},
>> + {436, 0},
>> + {444, 5000},
>> + {452, 10000},
>> + {460, 15000},
>> + {468, 20000},
>> + {476, 25000},
>> + {483, 30000},
>> + {491, 35000},
>> + {499, 40000},
>> + {507, 45000},
>> + {515, 50000},
>> + {523, 55000},
>> + {531, 60000},
>> + {539, 65000},
>> + {547, 70000},
>> + {555, 75000},
>> + {562, 80000},
>> + {570, 85000},
>> + {578, 90000},
>> + {586, 95000},
>> + {594, 100000},
>> + {602, 105000},
>> + {610, 110000},
>> + {618, 115000},
>> + {626, 120000},
>> + {634, 125000},
>> + {TSADCV2_DATA_MASK, 125000},
>> +};
>> +
>
> From the RV1108 TRM said, this table was used for the negative
> temperature coefficient.
> But the default table is positive temperature coefficient, why?
> I think you don't need to use the negative temperature coefficient.

Sorry, the RV1108 TRM document is old on my hand, from the lastest
document Rockchip RV1108 TRM V1.0 Part1-20170505.pdf said,
The RV1108 is negative temprature coefficient, so please set this bit as
1'b1 :(

>
>> static const struct tsadc_table rk3228_code_table[] = {
>> {0, -40000},
>> {588, -40000},
>> @@ -779,6 +818,30 @@ static void rk_tsadcv2_tshut_mode(int chn, void
>> __iomem *regs,
>> writel_relaxed(val, regs + TSADCV2_INT_EN);
>> }
>> +static const struct rockchip_tsadc_chip rv1108_tsadc_data = {
>> + .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
>> + .chn_num = 1, /* one channel for tsadc */
>> +
>> + .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give
>> PMIC */
>> + .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
>> + .tshut_temp = 95000,
>> +
>> + .initialize = rk_tsadcv2_initialize,
>> + .irq_ack = rk_tsadcv3_irq_ack,
>> + .control = rk_tsadcv3_control,
>
> If you will use the positive temperature coefficient, we need change it.
>
> .control = rk_tsadcv2_control,
>
>
>
>> + .get_temp = rk_tsadcv2_get_temp,
>> + .set_alarm_temp = rk_tsadcv2_alarm_temp,
>> + .set_tshut_temp = rk_tsadcv2_tshut_temp,
>> + .set_tshut_mode = rk_tsadcv2_tshut_mode,
>> +
>> + .table = {
>> + .id = rv1108_table,
>> + .length = ARRAY_SIZE(rv1108_table),
>> + .data_mask = TSADCV2_DATA_MASK,
>> + .mode = ADC_INCREMENT,
>
> Ditto
>
> -Caesar
>
>
>> + },
>> +};
>> +
>> static const struct rockchip_tsadc_chip rk3228_tsadc_data = {
>> .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
>> .chn_num = 1, /* one channel for tsadc */
>> @@ -928,6 +991,10 @@ static void rk_tsadcv2_tshut_mode(int chn, void
>> __iomem *regs,
>> static const struct of_device_id of_rockchip_thermal_match[] = {
>> {
>> + .compatible = "rockchip,rv1108-tsadc",
>> + .data = (void *)&rv1108_tsadc_data,
>> + },
>> + {
>> .compatible = "rockchip,rk3228-tsadc",
>> .data = (void *)&rk3228_tsadc_data,
>> },
>
>
>
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> Linux-rockchip@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-rockchip


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