projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| f682a218 MB |
2 | /* |
| 3 | * Device Tree support for Mediatek SoCs | |
| 4 | * | |
| 5 | * Copyright (c) 2014 MundoReader S.L. | |
| 6 | * Author: Matthias Brugger <matthias.bgg@gmail.com> | |
| f682a218 MB |
7 | */ |
| 8 | #include <linux/init.h> | |
| 62e59c4e | 9 | #include <linux/io.h> |
| f682a218 | 10 | #include <asm/mach/arch.h> |
| 9821e545 MB |
11 | #include <linux/of.h> |
| 12 | #include <linux/clk-provider.h> | |
| 13 | #include <linux/clocksource.h> | |
| 14 | ||
| 15 | ||
| 16 | #define GPT6_CON_MT65xx 0x10008060 | |
| 17 | #define GPT_ENABLE 0x31 | |
| 18 | ||
| 19 | static void __init mediatek_timer_init(void) | |
| 20 | { | |
| 21 | void __iomem *gpt_base; | |
| 22 | ||
| 23 | if (of_machine_is_compatible("mediatek,mt6589") || | |
| 601bac76 | 24 | of_machine_is_compatible("mediatek,mt7623") || |
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25 | of_machine_is_compatible("mediatek,mt8135") || |
| 26 | of_machine_is_compatible("mediatek,mt8127")) { | |
| 27 | /* turn on GPT6 which ungates arch timer clocks */ | |
| 28 | gpt_base = ioremap(GPT6_CON_MT65xx, 0x04); | |
| 29 | ||
| 30 | /* enable clock and set to free-run */ | |
| 31 | writel(GPT_ENABLE, gpt_base); | |
| 32 | iounmap(gpt_base); | |
| 33 | } | |
| 34 | ||
| 35 | of_clk_init(NULL); | |
| ba5d08c0 | 36 | timer_probe(); |
| 9821e545 | 37 | }; |
| f682a218 MB |
38 | |
| 39 | static const char * const mediatek_board_dt_compat[] = { | |
| 74d25721 | 40 | "mediatek,mt2701", |
| f682a218 | 41 | "mediatek,mt6589", |
| 4542172e | 42 | "mediatek,mt6592", |
| 31ac0d69 | 43 | "mediatek,mt7623", |
| a43379dd | 44 | "mediatek,mt7629", |
| 1ccd653c | 45 | "mediatek,mt8127", |
| 0c3fb203 | 46 | "mediatek,mt8135", |
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47 | NULL, |
| 48 | }; | |
| 49 | ||
| 50 | DT_MACHINE_START(MEDIATEK_DT, "Mediatek Cortex-A7 (Device Tree)") | |
| 51 | .dt_compat = mediatek_board_dt_compat, | |
| 9821e545 | 52 | .init_time = mediatek_timer_init, |
| f682a218 | 53 | MACHINE_END |