diff options
Diffstat (limited to 'arch/arm/mach-mediatek/mediatek.c')
| -rw-r--r-- | arch/arm/mach-mediatek/mediatek.c | 53 |
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 |