diff options
Diffstat (limited to 'arch/arm/mach-w90x900/cpu.c')
| -rw-r--r-- | arch/arm/mach-w90x900/cpu.c | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/arch/arm/mach-w90x900/cpu.c b/arch/arm/mach-w90x900/cpu.c deleted file mode 100644 index aeaafc2ebb01..000000000000 --- a/arch/arm/mach-w90x900/cpu.c +++ /dev/null @@ -1,238 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * linux/arch/arm/mach-w90x900/cpu.c - * - * Copyright (c) 2009 Nuvoton corporation. - * - * Wan ZongShun <mcuos.com@gmail.com> - * - * NUC900 series cpu common support - */ - -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/interrupt.h> -#include <linux/list.h> -#include <linux/timer.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/serial_8250.h> -#include <linux/delay.h> - -#include <asm/mach/arch.h> -#include <asm/mach/map.h> -#include <asm/mach/irq.h> -#include <asm/irq.h> -#include <asm/system_misc.h> - -#include <mach/hardware.h> -#include <mach/regs-serial.h> -#include <mach/regs-clock.h> -#include "regs-ebi.h" -#include "regs-timer.h" - -#include "cpu.h" -#include "clock.h" -#include "nuc9xx.h" - -/* Initial IO mappings */ - -static struct map_desc nuc900_iodesc[] __initdata = { - IODESC_ENT(IRQ), - IODESC_ENT(GCR), - IODESC_ENT(UART), - IODESC_ENT(TIMER), - IODESC_ENT(EBI), - IODESC_ENT(GPIO), -}; - -/* Initial clock declarations. */ -static DEFINE_CLK(lcd, 0); -static DEFINE_CLK(audio, 1); -static DEFINE_CLK(fmi, 4); -static DEFINE_SUBCLK(ms, 0); -static DEFINE_SUBCLK(sd, 1); -static DEFINE_CLK(dmac, 5); -static DEFINE_CLK(atapi, 6); -static DEFINE_CLK(emc, 7); -static DEFINE_SUBCLK(rmii, 2); -static DEFINE_CLK(usbd, 8); -static DEFINE_CLK(usbh, 9); -static DEFINE_CLK(g2d, 10); -static DEFINE_CLK(pwm, 18); -static DEFINE_CLK(ps2, 24); -static DEFINE_CLK(kpi, 25); -static DEFINE_CLK(wdt, 26); -static DEFINE_CLK(gdma, 27); -static DEFINE_CLK(adc, 28); -static DEFINE_CLK(usi, 29); -static DEFINE_CLK(ext, 0); -static DEFINE_CLK(timer0, 19); -static DEFINE_CLK(timer1, 20); -static DEFINE_CLK(timer2, 21); -static DEFINE_CLK(timer3, 22); -static DEFINE_CLK(timer4, 23); - -static struct clk_lookup nuc900_clkregs[] = { - DEF_CLKLOOK(&clk_lcd, "nuc900-lcd", NULL), - DEF_CLKLOOK(&clk_audio, "nuc900-ac97", NULL), - DEF_CLKLOOK(&clk_fmi, "nuc900-fmi", NULL), - DEF_CLKLOOK(&clk_ms, "nuc900-fmi", "MS"), - DEF_CLKLOOK(&clk_sd, "nuc900-fmi", "SD"), - DEF_CLKLOOK(&clk_dmac, "nuc900-dmac", NULL), - DEF_CLKLOOK(&clk_atapi, "nuc900-atapi", NULL), - DEF_CLKLOOK(&clk_emc, "nuc900-emc", NULL), - DEF_CLKLOOK(&clk_rmii, "nuc900-emc", "RMII"), - DEF_CLKLOOK(&clk_usbd, "nuc900-usbd", NULL), - DEF_CLKLOOK(&clk_usbh, "nuc900-usbh", NULL), - DEF_CLKLOOK(&clk_g2d, "nuc900-g2d", NULL), - DEF_CLKLOOK(&clk_pwm, "nuc900-pwm", NULL), - DEF_CLKLOOK(&clk_ps2, "nuc900-ps2", NULL), - DEF_CLKLOOK(&clk_kpi, "nuc900-kpi", NULL), - DEF_CLKLOOK(&clk_wdt, "nuc900-wdt", NULL), - DEF_CLKLOOK(&clk_gdma, "nuc900-gdma", NULL), - DEF_CLKLOOK(&clk_adc, "nuc900-ts", NULL), - DEF_CLKLOOK(&clk_usi, "nuc900-spi", NULL), - DEF_CLKLOOK(&clk_ext, NULL, "ext"), - DEF_CLKLOOK(&clk_timer0, NULL, "timer0"), - DEF_CLKLOOK(&clk_timer1, NULL, "timer1"), - DEF_CLKLOOK(&clk_timer2, NULL, "timer2"), - DEF_CLKLOOK(&clk_timer3, NULL, "timer3"), - DEF_CLKLOOK(&clk_timer4, NULL, "timer4"), -}; - -/* Initial serial platform data */ - -struct plat_serial8250_port nuc900_uart_data[] = { - NUC900_8250PORT(UART0), - {}, -}; - -struct platform_device nuc900_serial_device = { - .name = "serial8250", - .id = PLAT8250_DEV_PLATFORM, - .dev = { - .platform_data = nuc900_uart_data, - }, -}; - -/*Set NUC900 series cpu frequence*/ -static int __init nuc900_set_clkval(unsigned int cpufreq) -{ - unsigned int pllclk, ahbclk, apbclk, val; - - pllclk = 0; - ahbclk = 0; - apbclk = 0; - - switch (cpufreq) { - case 66: - pllclk = PLL_66MHZ; - ahbclk = AHB_CPUCLK_1_1; - apbclk = APB_AHB_1_2; - break; - - case 100: - pllclk = PLL_100MHZ; - ahbclk = AHB_CPUCLK_1_1; - apbclk = APB_AHB_1_2; - break; - - case 120: - pllclk = PLL_120MHZ; - ahbclk = AHB_CPUCLK_1_2; - apbclk = APB_AHB_1_2; - break; - - case 166: - pllclk = PLL_166MHZ; - ahbclk = AHB_CPUCLK_1_2; - apbclk = APB_AHB_1_2; - break; - - case 200: - pllclk = PLL_200MHZ; - ahbclk = AHB_CPUCLK_1_2; - apbclk = APB_AHB_1_2; - break; - } - - __raw_writel(pllclk, REG_PLLCON0); - - val = __raw_readl(REG_CLKDIV); - val &= ~(0x03 << 24 | 0x03 << 26); - val |= (ahbclk << 24 | apbclk << 26); - __raw_writel(val, REG_CLKDIV); - - return 0; -} -static int __init nuc900_set_cpufreq(char *str) -{ - unsigned long cpufreq, val; - - if (!*str) - return 0; - - if (kstrtoul(str, 0, &cpufreq)) - return 0; - - nuc900_clock_source(NULL, "ext"); - - nuc900_set_clkval(cpufreq); - - mdelay(1); - - val = __raw_readl(REG_CKSKEW); - val &= ~0xff; - val |= DEFAULTSKEW; - __raw_writel(val, REG_CKSKEW); - - nuc900_clock_source(NULL, "pll0"); - - return 1; -} - -__setup("cpufreq=", nuc900_set_cpufreq); - -/*Init NUC900 evb io*/ - -void __init nuc900_map_io(struct map_desc *mach_desc, int mach_size) -{ - unsigned long idcode = 0x0; - - iotable_init(mach_desc, mach_size); - iotable_init(nuc900_iodesc, ARRAY_SIZE(nuc900_iodesc)); - - idcode = __raw_readl(NUC900PDID); - if (idcode == NUC910_CPUID) - printk(KERN_INFO "CPU type 0x%08lx is NUC910\n", idcode); - else if (idcode == NUC920_CPUID) - printk(KERN_INFO "CPU type 0x%08lx is NUC920\n", idcode); - else if (idcode == NUC950_CPUID) - printk(KERN_INFO "CPU type 0x%08lx is NUC950\n", idcode); - else if (idcode == NUC960_CPUID) - printk(KERN_INFO "CPU type 0x%08lx is NUC960\n", idcode); -} - -/*Init NUC900 clock*/ - -void __init nuc900_init_clocks(void) -{ - clkdev_add_table(nuc900_clkregs, ARRAY_SIZE(nuc900_clkregs)); -} - -#define WTCR (TMR_BA + 0x1C) -#define WTCLK (1 << 10) -#define WTE (1 << 7) -#define WTRE (1 << 1) - -void nuc9xx_restart(enum reboot_mode mode, const char *cmd) -{ - if (mode == REBOOT_SOFT) { - /* Jump into ROM at address 0 */ - soft_restart(0); - } else { - __raw_writel(WTE | WTRE | WTCLK, WTCR); - } -} |