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thermal: ti-soc-thermal: add OMAP36xx support
Add OMAP36xx support to ti-soc-thermal driver. This
chip is also unreliable. The data provided here is
based on OMAP36xx TRM:
http://www.ti.com/lit/ug/swpu177aa/swpu177aa.pdf
Signed-off-by: Eduardo Valentin <edubezva@gmail.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
+86
+7
Documentation/devicetree/bindings/thermal/ti_soc_thermal.txt
+7
Documentation/devicetree/bindings/thermal/ti_soc_thermal.txt
···
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Required properties:
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- compatible : Should be:
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- "ti,omap34xx-bandgap" : for OMAP34xx bandgap
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- "ti,omap36xx-bandgap" : for OMAP36xx bandgap
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- "ti,omap4430-bandgap" : for OMAP4430 bandgap
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- "ti,omap4460-bandgap" : for OMAP4460 bandgap
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- "ti,omap4470-bandgap" : for OMAP4470 bandgap
···
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bandgap {
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reg = <0x48002524 0x4>;
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compatible = "ti,omap34xx-bandgap";
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+
};
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+
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OMAP36xx:
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bandgap {
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reg = <0x48002524 0x4>;
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compatible = "ti,omap36xx-bandgap";
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};
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OMAP4430:
+73
drivers/thermal/ti-soc-thermal/omap3-thermal-data.c
+73
drivers/thermal/ti-soc-thermal/omap3-thermal-data.c
···
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},
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.sensor_count = 1,
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};
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+
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/*
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* OMAP36XX has one instance of thermal sensor for MPU
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* need to describe the individual bit fields
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*/
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static struct temp_sensor_registers
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omap36xx_mpu_temp_sensor_registers = {
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.temp_sensor_ctrl = 0,
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.bgap_soc_mask = BIT(9),
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.bgap_eocz_mask = BIT(8),
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.bgap_dtemp_mask = 0xFF,
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+
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.bgap_mode_ctrl = 0,
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.mode_ctrl_mask = BIT(10),
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};
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+
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/* Thresholds and limits for OMAP36XX MPU temperature sensor */
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static struct temp_sensor_data omap36xx_mpu_temp_sensor_data = {
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.min_freq = 32768,
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.max_freq = 32768,
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.max_temp = 125000,
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.min_temp = -40000,
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.hyst_val = 5000,
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};
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+
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/*
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* Temperature values in milli degree celsius
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*/
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static const int
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omap36xx_adc_to_temp[128] = {
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-40000, -40000, -40000, -40000, -40000, -40000, -40000, -40000,
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-40000, -40000, -40000, -40000, -40000, -38000, -35000, -34000,
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-32000, -30000, -28000, -26000, -24000, -22000, -20000, -18500,
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-17000, -15000, -13500, -12000, -10000, -8000, -6500, -5000, -3500,
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-1500, 0, 2000, 3500, 5000, 6500, 8500, 10000, 12000, 13500,
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15000, 17000, 19000, 21000, 23000, 25000, 27000, 28500, 30000,
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32000, 33500, 35000, 37000, 38500, 40000, 42000, 43500, 45000,
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47000, 48500, 50000, 52000, 53500, 55000, 57000, 58500, 60000,
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62000, 64000, 66000, 68000, 70000, 71500, 73500, 75000, 77000,
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78500, 80000, 82000, 83500, 85000, 87000, 88500, 90000, 92000,
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93500, 95000, 97000, 98500, 100000, 102000, 103500, 105000, 107000,
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109000, 111000, 113000, 115000, 117000, 118500, 120000, 122000,
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123500, 125000, 125000, 125000, 125000, 125000, 125000, 125000,
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125000, 125000, 125000, 125000, 125000, 125000, 125000, 125000,
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125000, 125000, 125000, 125000, 125000, 125000, 125000
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};
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+
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/* OMAP36XX data */
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const struct ti_bandgap_data omap36xx_data = {
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.features = TI_BANDGAP_FEATURE_CLK_CTRL | TI_BANDGAP_FEATURE_UNRELIABLE,
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.fclock_name = "ts_fck",
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.div_ck_name = "ts_fck",
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.conv_table = omap36xx_adc_to_temp,
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.adc_start_val = 0,
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.adc_end_val = 127,
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.expose_sensor = ti_thermal_expose_sensor,
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.remove_sensor = ti_thermal_remove_sensor,
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+
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.sensors = {
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{
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.registers = &omap36xx_mpu_temp_sensor_registers,
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.ts_data = &omap36xx_mpu_temp_sensor_data,
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.domain = "cpu",
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.slope = 0,
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.constant = 20000,
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.slope_pcb = 0,
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.constant_pcb = 20000,
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.register_cooling = NULL,
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.unregister_cooling = NULL,
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},
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},
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.sensor_count = 1,
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};
+4
drivers/thermal/ti-soc-thermal/ti-bandgap.c
+4
drivers/thermal/ti-soc-thermal/ti-bandgap.c
+2
drivers/thermal/ti-soc-thermal/ti-bandgap.h
+2
drivers/thermal/ti-soc-thermal/ti-bandgap.h
···
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#ifdef CONFIG_OMAP3_THERMAL
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extern const struct ti_bandgap_data omap34xx_data;
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extern const struct ti_bandgap_data omap36xx_data;
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#else
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#define omap34xx_data NULL
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#define omap36xx_data NULL
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#endif
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#ifdef CONFIG_OMAP4_THERMAL