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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/arm/mach-mediatek/mediatek.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-mediatek/mediatek.c')
-rw-r--r--arch/arm/mach-mediatek/mediatek.c53
1 files changed, 53 insertions, 0 deletions
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