Merge tag 'mvebu-soc-3.15-2' of git://git.infradead.org/linux-mvebu into next/soc

Merge "mvebu soc changes for v3.15 (incremental pull #2)" from Jason Cooper:

 - mvebu
    - Add Armada 375, 380 and 385 SoCs

 - kirkwood
    - move kirkwood DT support to mach-mvebu
    - add mostly DT support for HP T5325 thin client

* tag 'mvebu-soc-3.15-2' of git://git.infradead.org/linux-mvebu:
  ARM: kirkwood: Add HP T5325 thin client
  ARM: kirkwood: select dtbs based on SoC
  ARM: kirkwood: Remove redundant kexec code
  ARM: mvebu: Armada 375/38x depend on MULTI_V7
  ARM: mvebu: Simplify headers and make local
  ARM: mvebu: Enable mvebu-soc-id on Kirkwood
  ARM: mvebu: Let kirkwood use the system controller for restart
  ARM: mvebu: Move kirkwood DT boards into mach-mvebu
  ARM: MM Enable building Feroceon L2 cache controller with ARCH_MVEBU
  ARM: Fix default CPU selection for ARCH_MULTI_V5
  ARM: MM: Add DT binding for Feroceon L2 cache
  ARM: orion: Move cache-feroceon-l2.h out of plat-orion
  ARM: mvebu: Add ARCH_MULTI_V7 to SoCs
  ARM: kirkwood: ioremap memory control register
  ARM: kirkwood: ioremap the cpu_config register before using it.
  ARM: kirkwood: Separate board-dt from common and pcie code.
  ARM: kirkwood: Drop printing the SoC type and revision
  ARM: kirkwood: Convert mv88f6281gtw_ge switch setup to DT
  ARM: kirkwood: Give pm.c its own header file.
  ARM: mvebu: Rename the ARCH_MVEBU menu option

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

2 files changed, 45 insertions, 2 deletions

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 1f8fed94c2a4..dccd7e177653 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -855,7 +855,7 @@ config OUTER_CACHE_SYNC
 
 config CACHE_FEROCEON_L2
 	bool "Enable the Feroceon L2 cache controller"
-	depends on ARCH_KIRKWOOD || ARCH_MV78XX0
+	depends on ARCH_KIRKWOOD || ARCH_MV78XX0 || ARCH_MVEBU
 	default y
 	select OUTER_CACHE
 	help
diff --git a/arch/arm/mm/cache-feroceon-l2.c b/arch/arm/mm/cache-feroceon-l2.c
index 48bc3c0a87ce..8dc1a2b5a8ed 100644
--- a/arch/arm/mm/cache-feroceon-l2.c
+++ b/arch/arm/mm/cache-feroceon-l2.c
@@ -13,10 +13,15 @@
  */
 
 #include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
 #include <linux/highmem.h>
+#include <linux/io.h>
 #include <asm/cacheflush.h>
 #include <asm/cp15.h>
-#include <plat/cache-feroceon-l2.h>
+#include <asm/hardware/cache-feroceon-l2.h>
+
+#define L2_WRITETHROUGH_KIRKWOOD	BIT(4)
 
 /*
  * Low-level cache maintenance operations.
@@ -350,3 +355,41 @@ void __init feroceon_l2_init(int __l2_wt_override)
 	printk(KERN_INFO "Feroceon L2: Cache support initialised%s.\n",
 			 l2_wt_override ? ", in WT override mode" : "");
 }
+#ifdef CONFIG_OF
+static const struct of_device_id feroceon_ids[] __initconst = {
+	{ .compatible = "marvell,kirkwood-cache"},
+	{ .compatible = "marvell,feroceon-cache"},
+	{}
+};
+
+int __init feroceon_of_init(void)
+{
+	struct device_node *node;
+	void __iomem *base;
+	bool l2_wt_override = false;
+	struct resource res;
+
+#if defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH)
+	l2_wt_override = true;
+#endif
+
+	node = of_find_matching_node(NULL, feroceon_ids);
+	if (node && of_device_is_compatible(node, "marvell,kirkwood-cache")) {
+		if (of_address_to_resource(node, 0, &res))
+			return -ENODEV;
+
+		base = ioremap(res.start, resource_size(&res));
+		if (!base)
+			return -ENOMEM;
+
+		if (l2_wt_override)
+			writel(readl(base) | L2_WRITETHROUGH_KIRKWOOD, base);
+		else
+			writel(readl(base) & ~L2_WRITETHROUGH_KIRKWOOD, base);
+	}
+
+	feroceon_l2_init(l2_wt_override);
+
+	return 0;
+}
+#endif