ARM: dts: AM33XX: Add SHAM data and documentation

Add the generic AM33XX SHAM module's device tree data and
enable it for the am335x-evm, am335x-evmsk, and am335x-bone
platforms.  Also add Documentation file describing the data
for the SHAM module.

Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Joel Fernandes <joelf@ti.com>
[joelf@ti.com: Dropped interrupt-parent property, documentation fixups]
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>

5 files changed, 49 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/crypto/omap-sham.txt b/Documentation/devicetree/bindings/crypto/omap-sham.txt
new file mode 100644
index 000000000000..f839acd6f0ee
--- /dev/null
+++ b/Documentation/devicetree/bindings/crypto/omap-sham.txt
@@ -0,0 +1,28 @@
+OMAP SoC SHA crypto Module
+
+Required properties:
+
+- compatible : Should contain entries for this and backward compatible
+  SHAM versions:
+  - "ti,omap2-sham" for OMAP2 & OMAP3.
+  - "ti,omap4-sham" for OMAP4 and AM33XX.
+  Note that these two versions are incompatible.
+- ti,hwmods: Name of the hwmod associated with the SHAM module
+- reg : Offset and length of the register set for the module
+- interrupts : the interrupt-specifier for the SHAM module.
+
+Optional properties:
+- dmas: DMA specifiers for the rx dma. See the DMA client binding,
+        Documentation/devicetree/bindings/dma/dma.txt
+- dma-names: DMA request name. Should be "rx" if a dma is present.
+
+Example:
+        /* AM335x */
+        sham: sham@53100000 {
+                compatible = "ti,omap4-sham";
+                ti,hwmods = "sham";
+                reg = <0x53100000 0x200>;
+                interrupts = <109>;
+                dmas = <&edma 36>;
+                dma-names = "rx";
+        };
diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
index 0d6334875df8..8a9802ee6380 100644
--- a/arch/arm/boot/dts/am335x-bone.dts
+++ b/arch/arm/boot/dts/am335x-bone.dts
@@ -19,3 +19,7 @@
 &mmc1 {
         vmmc-supply = <&ldo3_reg>;
 };
+
+&sham {
+        status = "okay";
+};
diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts
index 028ca096d18d..09786efc25c1 100644
--- a/arch/arm/boot/dts/am335x-evm.dts
+++ b/arch/arm/boot/dts/am335x-evm.dts
@@ -523,3 +523,7 @@
         vmmc-supply = <&vmmc_reg>;
         bus-width = <4>;
 };
+
+&sham {
+        status = "okay";
+};
diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts
index 563a2b136e0e..08d5cd9e6457 100644
--- a/arch/arm/boot/dts/am335x-evmsk.dts
+++ b/arch/arm/boot/dts/am335x-evmsk.dts
@@ -425,3 +425,7 @@
         vmmc-supply = <&vmmc_reg>;
         bus-width = <4>;
 };
+
+&sham {
+        status = "okay";
+};
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index 8aabaa0eb264..5f114a7f9484 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -712,5 +712,14 @@
                         #size-cells = <1>;
                         status = "disabled";
                 };
+
+                sham: sham@53100000 {
+                        compatible = "ti,omap4-sham";
+                        ti,hwmods = "sham";
+                        reg = <0x53100000 0x200>;
+                        interrupts = <109>;
+                        dmas = <&edma 36>;
+                        dma-names = "rx";
+                };
         };
 };