cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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mediatek.c (1286B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 * Device Tree support for Mediatek SoCs
      4 *
      5 * Copyright (c) 2014 MundoReader S.L.
      6 * Author: Matthias Brugger <matthias.bgg@gmail.com>
      7 */
      8#include <linux/init.h>
      9#include <linux/io.h>
     10#include <asm/mach/arch.h>
     11#include <linux/of.h>
     12#include <linux/of_clk.h>
     13#include <linux/clocksource.h>
     14
     15
     16#define GPT6_CON_MT65xx 0x10008060
     17#define GPT_ENABLE      0x31
     18
     19static void __init mediatek_timer_init(void)
     20{
     21	void __iomem *gpt_base;
     22
     23	if (of_machine_is_compatible("mediatek,mt6589") ||
     24	    of_machine_is_compatible("mediatek,mt7623") ||
     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);
     36	timer_probe();
     37};
     38
     39static const char * const mediatek_board_dt_compat[] = {
     40	"mediatek,mt2701",
     41	"mediatek,mt6589",
     42	"mediatek,mt6592",
     43	"mediatek,mt7623",
     44	"mediatek,mt7629",
     45	"mediatek,mt8127",
     46	"mediatek,mt8135",
     47	NULL,
     48};
     49
     50DT_MACHINE_START(MEDIATEK_DT, "Mediatek Cortex-A7 (Device Tree)")
     51	.dt_compat	= mediatek_board_dt_compat,
     52	.init_time	= mediatek_timer_init,
     53MACHINE_END