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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020 MediaTek Inc.
*
* Author: Weijie Gao <weijie.gao@mediatek.com>
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <dm/uclass.h>
#include <dt-bindings/clock/mt7628-clk.h>
#include <linux/io.h>
#include "mt7628.h"
DECLARE_GLOBAL_DATA_PTR;
static void set_init_timer_freq(void)
{
void __iomem *sysc;
u32 bs, val, timer_freq_post;
sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
/* We can't use the clk driver as the DM has not been initialized yet */
bs = readl(sysc + SYSCTL_SYSCFG0_REG);
if ((bs & XTAL_FREQ_SEL) == XTAL_25MHZ) {
gd->arch.timer_freq = 25000000;
timer_freq_post = 575000000;
} else {
gd->arch.timer_freq = 40000000;
timer_freq_post = 580000000;
}
val = readl(sysc + SYSCTL_CLKCFG0_REG);
if (!(val & (CPU_PLL_FROM_BBP | CPU_PLL_FROM_XTAL)))
gd->arch.timer_freq = timer_freq_post;
}
void mt7628_init(void)
{
set_init_timer_freq();
mt7628_ddr_init();
}
int print_cpuinfo(void)
{
void __iomem *sysc;
struct udevice *clkdev;
u32 val, ver, eco, pkg, ddr, chipmode, ee;
ulong cpu_clk, bus_clk, xtal_clk, timer_freq;
struct clk clk;
int ret;
sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
val = readl(sysc + SYSCTL_CHIP_REV_ID_REG);
ver = (val & VER_M) >> VER_S;
eco = (val & ECO_M) >> ECO_S;
pkg = !!(val & PKG_ID);
val = readl(sysc + SYSCTL_SYSCFG0_REG);
ddr = val & DRAM_TYPE;
chipmode = (val & CHIP_MODE_M) >> CHIP_MODE_S;
val = readl(sysc + SYSCTL_EFUSE_CFG_REG);
ee = val & EFUSE_MT7688;
printf("CPU: MediaTek MT%u%c ver:%u eco:%u\n",
ee ? 7688 : 7628, pkg ? 'A' : 'K', ver, eco);
printf("Boot: DDR%s, SPI-NOR %u-Byte Addr, CPU clock from %s\n",
ddr ? "" : "2", chipmode & 0x01 ? 4 : 3,
chipmode & 0x02 ? "XTAL" : "CPLL");
ret = uclass_get_device_by_driver(UCLASS_CLK, DM_GET_DRIVER(mt7628_clk),
&clkdev);
if (ret)
return ret;
clk.dev = clkdev;
clk.id = CLK_CPU;
cpu_clk = clk_get_rate(&clk);
clk.id = CLK_SYS;
bus_clk = clk_get_rate(&clk);
clk.id = CLK_XTAL;
xtal_clk = clk_get_rate(&clk);
clk.id = CLK_MIPS_CNT;
timer_freq = clk_get_rate(&clk);
/* Set final timer frequency */
if (timer_freq)
gd->arch.timer_freq = timer_freq;
printf("Clock: CPU: %luMHz, Bus: %luMHz, XTAL: %luMHz\n",
cpu_clk / 1000000, bus_clk / 1000000, xtal_clk / 1000000);
return 0;
}
ulong notrace get_tbclk(void)
{
return gd->arch.timer_freq;
}
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