thermal: Add driver for Armada 370/XP SoC thermal management

This driver supports both Armada 370 and Armada XP SoC
thermal management controllers.

Armada 370 has a register to check a valid temperature, whereas
Armada XP does not. Each has a different initialization (i.e. calibration)
function. The temperature conversion formula is the same for both.

The controller present in each SoC have a very similar feature set,
so it corresponds to have one driver to support both of them.

Although this driver may present similarities to Dove and Kirkwood
thermal driver, the exact differences and coincidences are not fully
known. For this reason, support is given through a separate driver.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index a764f165b589..9eddf744c94f 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -144,6 +144,14 @@ config DB8500_THERMAL
           created. Cooling devices can be bound to the trip points to cool this
           thermal zone if trip points reached.
 
+config ARMADA_THERMAL
+        tristate "Armada 370/XP thermal management"
+        depends on ARCH_MVEBU
+        depends on OF
+        help
+          Enable this option if you want to have support for thermal management
+          controller present in Armada 370 and Armada XP SoC.
+
 config DB8500_CPUFREQ_COOLING
         tristate "DB8500 cpufreq cooling"
         depends on ARCH_U8500