ARM: mvebu: add initial support for the Armada 380/385 SOCs

This commit adds the basic support for the Armada 380 and Armada 385
SOCs. These SoCs share most of their IP with the Armada 370/XP
SoCs. The main difference is the use of a Cortex A9 CPU instead of the
PJ4B CPU. The Armada 380 is a single core Cortex-A9, while the Armada
385 is a dual-core Cortex-A9.

The support is introduced in board-v7.c, together with Armada 370/XP,
but a separate DT structure is added, because Armada 38x will need a
different set of SMP operations when the SMP support is introduced.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

3 files changed, 36 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/arm/armada-38x.txt b/Documentation/devicetree/bindings/arm/armada-38x.txt
new file mode 100644
index 000000000000..11f2330a6554
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/armada-38x.txt
@@ -0,0 +1,10 @@
+Marvell Armada 38x Platforms Device Tree Bindings
+-------------------------------------------------
+
+Boards with a SoC of the Marvell Armada 38x family shall have the
+following property:
+
+Required root node property:
+
+ - compatible: must contain either "marvell,armada380" or
+   "marvell,armada385" depending on the variant of the SoC being used.
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index 3b74a8450947..884b275ab056 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -51,6 +51,20 @@ config MACH_ARMADA_375
           Say 'Y' here if you want your kernel to support boards based
           on the Marvell Armada 375 SoC with device tree.
 
+config MACH_ARMADA_38X
+        bool "Marvell Armada 380/385 boards"
+        select ARM_ERRATA_720789
+        select ARM_ERRATA_753970
+        select ARM_GIC
+        select ARMADA_38X_CLK
+        select CPU_V7
+        select MACH_MVEBU_V7
+        select NEON
+        select PINCTRL_ARMADA_38X
+        help
+          Say 'Y' here if you want your kernel to support boards based
+          on the Marvell Armada 380/385 SoC with device tree.
+
 config MACH_ARMADA_XP
         bool "Marvell Armada XP boards"
         select ARMADA_XP_CLK
diff --git a/arch/arm/mach-mvebu/board-v7.c b/arch/arm/mach-mvebu/board-v7.c
index 087668c7d46a..746134ecdfc2 100644
--- a/arch/arm/mach-mvebu/board-v7.c
+++ b/arch/arm/mach-mvebu/board-v7.c
@@ -125,3 +125,15 @@ DT_MACHINE_START(ARMADA_375_DT, "Marvell Armada 375 (Device Tree)")
         .restart        = mvebu_restart,
         .dt_compat      = armada_375_dt_compat,
 MACHINE_END
+
+static const char * const armada_38x_dt_compat[] = {
+        "marvell,armada380",
+        "marvell,armada385",
+        NULL,
+};
+
+DT_MACHINE_START(ARMADA_38X_DT, "Marvell Armada 380/385 (Device Tree)")
+        .init_time      = mvebu_timer_and_clk_init,
+        .restart        = mvebu_restart,
+        .dt_compat      = armada_38x_dt_compat,
+MACHINE_END