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thermal: armada: Support Armada 380 SoC 

Now that a generic infrastructure is in place, it's possible to support
the Armada 380 SoC thermal sensor. This sensor is similar to the one
available in the already supported SoCs, with its specific temperature formula
and specific sensor initialization.

Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Ezequiel Garcia 2014-05-06 13:59:51 -03:00 committed by Zhang Rui
parent e2d5f05b74
commit e6e0a68c6c
2 changed files with 32 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/devicetree/bindings/thermal/armada-thermal.txt
View File

@ -1,4 +1,4 @@
* Marvell Armada 370/375/XP thermal management
* Marvell Armada 370/375/380/XP thermal management
Required properties:
@ -6,6 +6,7 @@ Required properties:
marvell,armada370-thermal
marvell,armada375-thermal
marvell,armada375-z1-thermal
marvell,armada380-thermal
marvell,armadaxp-thermal
Note: As the name suggests, "marvell,armada375-z1-thermal"

30
drivers/thermal/armada_thermal.c
View File

@ -43,6 +43,7 @@
#define A375_UNIT_CONTROL_MASK 0x7
#define A375_READOUT_INVERT BIT(15)
#define A375_HW_RESETn BIT(8)
#define A380_HW_RESET BIT(8)
struct armada_thermal_data;
@ -149,6 +150,19 @@ static void armada375_init_sensor(struct platform_device *pdev,
mdelay(50);
}
static void armada380_init_sensor(struct platform_device *pdev,
struct armada_thermal_priv *priv)
{
unsigned long reg = readl_relaxed(priv->control);
/* Reset hardware once */
if (!(reg & A380_HW_RESET)) {
reg |= A380_HW_RESET;
writel(reg, priv->control);
mdelay(10);
}
}
static bool armada_is_valid(struct armada_thermal_priv *priv)
{
unsigned long reg = readl_relaxed(priv->sensor);
@ -220,6 +234,18 @@ static const struct armada_thermal_data armada375_data = {
.coef_div = 13616,
};
static const struct armada_thermal_data armada380_data = {
.is_valid = armada_is_valid,
.init_sensor = armada380_init_sensor,
.is_valid_shift = 10,
.temp_shift = 0,
.temp_mask = 0x3ff,
.coef_b = 1169498786UL,
.coef_m = 2000000UL,
.coef_div = 4289,
.inverted = true,
};
static const struct of_device_id armada_thermal_id_table[] = {
{
.compatible = "marvell,armadaxp-thermal",
@ -237,6 +263,10 @@ static const struct of_device_id armada_thermal_id_table[] = {
.compatible = "marvell,armada375-z1-thermal",
.data = &armada375_data,
},
{
.compatible = "marvell,armada380-thermal",
.data = &armada380_data,
},
{
/* sentinel */
},