mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-21 02:33:07 +00:00
ff6d1948dc
The MT7688KN is a multi-chip package with 8MiB DDR1 KGD. So the DDR type from bootstrap register must be ignored, and always be assumed as DDR1. This patch fixes the displayed DDR type of mt7628. Signed-off-by: Weijie Gao <weijie.gao@mediatek.com> Reviewed-by: Stefan Roese <sr@denx.de>
113 lines
2.5 KiB
C
113 lines
2.5 KiB
C
// 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 <asm/global_data.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;
|
|
|
|
if (pkg == PKG_ID_KN)
|
|
ddr = DRAM_DDR1;
|
|
|
|
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_DRIVER_GET(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;
|
|
}
|