1 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/mach-mediatek/mediatek.c b/arch/arm/mach-mediatek/mediatek.c
new file mode 100644
index 000000000..6910b4e0d
--- /dev/null
+++ b/arch/arm/mach-mediatek/mediatek.c
@@ -0,0 +1,62 @@
+/*
+ * Device Tree support for Mediatek SoCs
+ *
+ * Copyright (c) 2014 MundoReader S.L.
+ * Author: Matthias Brugger <matthias.bgg@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+#include <linux/init.h>
+#include <asm/mach/arch.h>
+#include <linux/of.h>
+#include <linux/clk-provider.h>
+#include <linux/clocksource.h>
+
+
+#define GPT6_CON_MT65xx 0x10008060
+#define GPT_ENABLE      0x31
+
+static void __init mediatek_timer_init(void)
+{
+	void __iomem *gpt_base;
+
+	if (of_machine_is_compatible("mediatek,mt6589") ||
+	    of_machine_is_compatible("mediatek,mt7623") ||
+	    of_machine_is_compatible("mediatek,mt7623a") ||
+	    of_machine_is_compatible("mediatek,mt8135") ||
+	    of_machine_is_compatible("mediatek,mt8127")) {
+		/* turn on GPT6 which ungates arch timer clocks */
+		gpt_base = ioremap(GPT6_CON_MT65xx, 0x04);
+
+		/* enable clock and set to free-run */
+		writel(GPT_ENABLE, gpt_base);
+		iounmap(gpt_base);
+	}
+
+	of_clk_init(NULL);
+	timer_probe();
+};
+
+static const char * const mediatek_board_dt_compat[] = {
+	"mediatek,mt2701",
+	"mediatek,mt6589",
+	"mediatek,mt6592",
+	"mediatek,mt7623",
+	"mediatek,mt7623a",
+	"mediatek,mt8127",
+	"mediatek,mt8135",
+	NULL,
+};
+
+DT_MACHINE_START(MEDIATEK_DT, "Mediatek Cortex-A7 (Device Tree)")
+	.dt_compat	= mediatek_board_dt_compat,
+	.init_time	= mediatek_timer_init,
+MACHINE_END