From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Thu, 11 Apr 2024 10:27:49 +0200
Subject: Adding upstream version 6.6.15.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/arm/mach-mediatek/mediatek.c | 53 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 arch/arm/mach-mediatek/mediatek.c

(limited to 'arch/arm/mach-mediatek/mediatek.c')

diff --git a/arch/arm/mach-mediatek/mediatek.c b/arch/arm/mach-mediatek/mediatek.c
new file mode 100644
index 0000000000..e6e9f93a1f
--- /dev/null
+++ b/arch/arm/mach-mediatek/mediatek.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Device Tree support for Mediatek SoCs
+ *
+ * Copyright (c) 2014 MundoReader S.L.
+ * Author: Matthias Brugger <matthias.bgg@gmail.com>
+ */
+#include <linux/init.h>
+#include <linux/io.h>
+#include <asm/mach/arch.h>
+#include <linux/of.h>
+#include <linux/of_clk.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,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,mt7629",
+	"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
-- 
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