Commit b840b6e6 authored by Eduardo Valentin's avatar Eduardo Valentin

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.pdfSigned-off-by: default avatarEduardo Valentin <edubezva@gmail.com>
Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
parent 9c5c87e5
......@@ -11,6 +11,7 @@ to the silicon temperature.
Required properties:
- compatible : Should be:
- "ti,omap34xx-bandgap" : for OMAP34xx bandgap
- "ti,omap36xx-bandgap" : for OMAP36xx bandgap
- "ti,omap4430-bandgap" : for OMAP4430 bandgap
- "ti,omap4460-bandgap" : for OMAP4460 bandgap
- "ti,omap4470-bandgap" : for OMAP4470 bandgap
......@@ -32,6 +33,12 @@ bandgap {
compatible = "ti,omap34xx-bandgap";
};
OMAP36xx:
bandgap {
reg = <0x48002524 0x4>;
compatible = "ti,omap36xx-bandgap";
};
OMAP4430:
bandgap {
reg = <0x4a002260 0x4 0x4a00232C 0x4>;
......
......@@ -101,3 +101,76 @@ const struct ti_bandgap_data omap34xx_data = {
},
.sensor_count = 1,
};
/*
* OMAP36XX has one instance of thermal sensor for MPU
* need to describe the individual bit fields
*/
static struct temp_sensor_registers
omap36xx_mpu_temp_sensor_registers = {
.temp_sensor_ctrl = 0,
.bgap_soc_mask = BIT(9),
.bgap_eocz_mask = BIT(8),
.bgap_dtemp_mask = 0xFF,
.bgap_mode_ctrl = 0,
.mode_ctrl_mask = BIT(10),
};
/* Thresholds and limits for OMAP36XX MPU temperature sensor */
static struct temp_sensor_data omap36xx_mpu_temp_sensor_data = {
.min_freq = 32768,
.max_freq = 32768,
.max_temp = 125000,
.min_temp = -40000,
.hyst_val = 5000,
};
/*
* Temperature values in milli degree celsius
*/
static const int
omap36xx_adc_to_temp[128] = {
-40000, -40000, -40000, -40000, -40000, -40000, -40000, -40000,
-40000, -40000, -40000, -40000, -40000, -38000, -35000, -34000,
-32000, -30000, -28000, -26000, -24000, -22000, -20000, -18500,
-17000, -15000, -13500, -12000, -10000, -8000, -6500, -5000, -3500,
-1500, 0, 2000, 3500, 5000, 6500, 8500, 10000, 12000, 13500,
15000, 17000, 19000, 21000, 23000, 25000, 27000, 28500, 30000,
32000, 33500, 35000, 37000, 38500, 40000, 42000, 43500, 45000,
47000, 48500, 50000, 52000, 53500, 55000, 57000, 58500, 60000,
62000, 64000, 66000, 68000, 70000, 71500, 73500, 75000, 77000,
78500, 80000, 82000, 83500, 85000, 87000, 88500, 90000, 92000,
93500, 95000, 97000, 98500, 100000, 102000, 103500, 105000, 107000,
109000, 111000, 113000, 115000, 117000, 118500, 120000, 122000,
123500, 125000, 125000, 125000, 125000, 125000, 125000, 125000,
125000, 125000, 125000, 125000, 125000, 125000, 125000, 125000,
125000, 125000, 125000, 125000, 125000, 125000, 125000
};
/* OMAP36XX data */
const struct ti_bandgap_data omap36xx_data = {
.features = TI_BANDGAP_FEATURE_CLK_CTRL | TI_BANDGAP_FEATURE_UNRELIABLE,
.fclock_name = "ts_fck",
.div_ck_name = "ts_fck",
.conv_table = omap36xx_adc_to_temp,
.adc_start_val = 0,
.adc_end_val = 127,
.expose_sensor = ti_thermal_expose_sensor,
.remove_sensor = ti_thermal_remove_sensor,
.sensors = {
{
.registers = &omap36xx_mpu_temp_sensor_registers,
.ts_data = &omap36xx_mpu_temp_sensor_data,
.domain = "cpu",
.slope = 0,
.constant = 20000,
.slope_pcb = 0,
.constant_pcb = 20000,
.register_cooling = NULL,
.unregister_cooling = NULL,
},
},
.sensor_count = 1,
};
......@@ -1588,6 +1588,10 @@ static const struct of_device_id of_ti_bandgap_match[] = {
.compatible = "ti,omap34xx-bandgap",
.data = (void *)&omap34xx_data,
},
{
.compatible = "ti,omap36xx-bandgap",
.data = (void *)&omap36xx_data,
},
#endif
#ifdef CONFIG_OMAP4_THERMAL
{
......
......@@ -395,8 +395,10 @@ int ti_bandgap_get_trend(struct ti_bandgap *bgp, int id, int *trend);
#ifdef CONFIG_OMAP3_THERMAL
extern const struct ti_bandgap_data omap34xx_data;
extern const struct ti_bandgap_data omap36xx_data;
#else
#define omap34xx_data NULL
#define omap36xx_data NULL
#endif
#ifdef CONFIG_OMAP4_THERMAL
......
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