ARM: STi: STiH416: Add reset controller support.

This patch adds a reset controller node to the SOC device tree and also
adds new header files with reset lines required for other device tree
nodes.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>

2 files changed, 27 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/stih416.dtsi b/arch/arm/boot/dts/stih416.dtsi
index b7ab47b95816..e5bec660c55e 100644
--- a/arch/arm/boot/dts/stih416.dtsi
+++ b/arch/arm/boot/dts/stih416.dtsi
@@ -10,6 +10,7 @@
 #include "stih416-clock.dtsi"
 #include "stih416-pinctrl.dtsi"
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/reset-controller/stih416-resets.h>
 / {
         L2: cache-controller {
                 compatible = "arm,pl310-cache";
@@ -27,6 +28,11 @@
                 ranges;
                 compatible      = "simple-bus";
 
+                powerdown: powerdown-controller {
+                        #reset-cells = <1>;
+                        compatible = "st,stih416-powerdown";
+                };
+
                 syscfg_sbc:sbc-syscfg@fe600000{
                         compatible      = "st,stih416-sbc-syscfg", "syscon";
                         reg             = <0xfe600000 0x1000>;
diff --git a/include/dt-bindings/reset-controller/stih416-resets.h b/include/dt-bindings/reset-controller/stih416-resets.h
new file mode 100644
index 000000000000..d7da55f08cd6
--- /dev/null
+++ b/include/dt-bindings/reset-controller/stih416-resets.h
@@ -0,0 +1,21 @@
+/*
+ * This header provides constants for the reset controller
+ * based peripheral powerdown requests on the STMicroelectronics
+ * STiH416 SoC.
+ */
+#ifndef _DT_BINDINGS_RESET_CONTROLLER_STIH416
+#define _DT_BINDINGS_RESET_CONTROLLER_STIH416
+
+#define STIH416_EMISS_POWERDOWN         0
+#define STIH416_NAND_POWERDOWN          1
+#define STIH416_KEYSCAN_POWERDOWN       2
+#define STIH416_USB0_POWERDOWN          3
+#define STIH416_USB1_POWERDOWN          4
+#define STIH416_USB2_POWERDOWN          5
+#define STIH416_USB3_POWERDOWN          6
+#define STIH416_SATA0_POWERDOWN         7
+#define STIH416_SATA1_POWERDOWN         8
+#define STIH416_PCIE0_POWERDOWN         9
+#define STIH416_PCIE1_POWERDOWN         10
+
+#endif /* _DT_BINDINGS_RESET_CONTROLLER_STIH416 */