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53 lines
1.3 KiB
53 lines
1.3 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Device Tree support for Mediatek SoCs |
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* |
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* Copyright (c) 2014 MundoReader S.L. |
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* Author: Matthias Brugger <[email protected]> |
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*/ |
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#include <linux/init.h> |
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#include <linux/io.h> |
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#include <asm/mach/arch.h> |
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#include <linux/of.h> |
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#include <linux/of_clk.h> |
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#include <linux/clocksource.h> |
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#define GPT6_CON_MT65xx 0x10008060 |
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#define GPT_ENABLE 0x31 |
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static void __init mediatek_timer_init(void) |
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{ |
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void __iomem *gpt_base; |
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if (of_machine_is_compatible("mediatek,mt6589") || |
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of_machine_is_compatible("mediatek,mt7623") || |
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of_machine_is_compatible("mediatek,mt8135") || |
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of_machine_is_compatible("mediatek,mt8127")) { |
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/* turn on GPT6 which ungates arch timer clocks */ |
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gpt_base = ioremap(GPT6_CON_MT65xx, 0x04); |
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/* enable clock and set to free-run */ |
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writel(GPT_ENABLE, gpt_base); |
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iounmap(gpt_base); |
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} |
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of_clk_init(NULL); |
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timer_probe(); |
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}; |
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static const char * const mediatek_board_dt_compat[] = { |
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"mediatek,mt2701", |
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"mediatek,mt6589", |
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"mediatek,mt6592", |
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"mediatek,mt7623", |
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"mediatek,mt7629", |
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"mediatek,mt8127", |
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"mediatek,mt8135", |
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NULL, |
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}; |
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DT_MACHINE_START(MEDIATEK_DT, "Mediatek Cortex-A7 (Device Tree)") |
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.dt_compat = mediatek_board_dt_compat, |
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.init_time = mediatek_timer_init, |
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MACHINE_END
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