linux/arch/arm/mach-mmp/pxa168.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *  linux/arch/arm/mach-mmp/pxa168.c
   4 *
   5 *  Code specific to PXA168
   6 */
   7#include <linux/module.h>
   8#include <linux/kernel.h>
   9#include <linux/init.h>
  10#include <linux/list.h>
  11#include <linux/io.h>
  12#include <linux/clk.h>
  13#include <linux/clk/mmp.h>
  14#include <linux/platform_device.h>
  15#include <linux/platform_data/mv_usb.h>
  16#include <linux/dma-mapping.h>
  17
  18#include <asm/mach/time.h>
  19#include <asm/system_misc.h>
  20
  21#include "addr-map.h"
  22#include "common.h"
  23#include <linux/soc/mmp/cputype.h>
  24#include "devices.h"
  25#include "irqs.h"
  26#include "mfp.h"
  27#include "pxa168.h"
  28#include "regs-apbc.h"
  29#include "regs-apmu.h"
  30#include "regs-usb.h"
  31
  32#define MFPR_VIRT_BASE  (APB_VIRT_BASE + 0x1e000)
  33
  34static struct mfp_addr_map pxa168_mfp_addr_map[] __initdata =
  35{
  36        MFP_ADDR_X(GPIO0,   GPIO36,  0x04c),
  37        MFP_ADDR_X(GPIO37,  GPIO55,  0x000),
  38        MFP_ADDR_X(GPIO56,  GPIO123, 0x0e0),
  39        MFP_ADDR_X(GPIO124, GPIO127, 0x0f4),
  40
  41        MFP_ADDR_END,
  42};
  43
  44void __init pxa168_init_irq(void)
  45{
  46        icu_init_irq();
  47}
  48
  49static int __init pxa168_init(void)
  50{
  51        if (cpu_is_pxa168()) {
  52                mfp_init_base(MFPR_VIRT_BASE);
  53                mfp_init_addr(pxa168_mfp_addr_map);
  54                pxa168_clk_init(APB_PHYS_BASE + 0x50000,
  55                                AXI_PHYS_BASE + 0x82800,
  56                                APB_PHYS_BASE + 0x15000);
  57        }
  58
  59        return 0;
  60}
  61postcore_initcall(pxa168_init);
  62
  63/* system timer - clock enabled, 3.25MHz */
  64#define TIMER_CLK_RST   (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))
  65#define APBC_TIMERS     APBC_REG(0x34)
  66
  67void __init pxa168_timer_init(void)
  68{
  69        /* this is early, we have to initialize the CCU registers by
  70         * ourselves instead of using clk_* API. Clock rate is defined
  71         * by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running
  72         */
  73        __raw_writel(APBC_APBCLK | APBC_RST, APBC_TIMERS);
  74
  75        /* 3.25MHz, bus/functional clock enabled, release reset */
  76        __raw_writel(TIMER_CLK_RST, APBC_TIMERS);
  77
  78        mmp_timer_init(IRQ_PXA168_TIMER1, 3250000);
  79}
  80
  81void pxa168_clear_keypad_wakeup(void)
  82{
  83        uint32_t val;
  84        uint32_t mask = APMU_PXA168_KP_WAKE_CLR;
  85
  86        /* wake event clear is needed in order to clear keypad interrupt */
  87        val = __raw_readl(APMU_WAKE_CLR);
  88        __raw_writel(val |  mask, APMU_WAKE_CLR);
  89}
  90
  91/* on-chip devices */
  92PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
  93PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);
  94PXA168_DEVICE(uart3, "pxa2xx-uart", 2, UART3, 0xd4026000, 0x30, 23, 24);
  95PXA168_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
  96PXA168_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);
  97PXA168_DEVICE(pwm1, "pxa168-pwm", 0, NONE, 0xd401a000, 0x10);
  98PXA168_DEVICE(pwm2, "pxa168-pwm", 1, NONE, 0xd401a400, 0x10);
  99PXA168_DEVICE(pwm3, "pxa168-pwm", 2, NONE, 0xd401a800, 0x10);
 100PXA168_DEVICE(pwm4, "pxa168-pwm", 3, NONE, 0xd401ac00, 0x10);
 101PXA168_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99);
 102PXA168_DEVICE(ssp1, "pxa168-ssp", 0, SSP1, 0xd401b000, 0x40, 52, 53);
 103PXA168_DEVICE(ssp2, "pxa168-ssp", 1, SSP2, 0xd401c000, 0x40, 54, 55);
 104PXA168_DEVICE(ssp3, "pxa168-ssp", 2, SSP3, 0xd401f000, 0x40, 56, 57);
 105PXA168_DEVICE(ssp4, "pxa168-ssp", 3, SSP4, 0xd4020000, 0x40, 58, 59);
 106PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000, 0x40, 60, 61);
 107PXA168_DEVICE(fb, "pxa168-fb", -1, LCD, 0xd420b000, 0x1c8);
 108PXA168_DEVICE(keypad, "pxa27x-keypad", -1, KEYPAD, 0xd4012000, 0x4c);
 109PXA168_DEVICE(eth, "pxa168-eth", -1, MFU, 0xc0800000, 0x0fff);
 110
 111struct resource pxa168_resource_gpio[] = {
 112        {
 113                .start  = 0xd4019000,
 114                .end    = 0xd4019fff,
 115                .flags  = IORESOURCE_MEM,
 116        }, {
 117                .start  = IRQ_PXA168_GPIOX,
 118                .end    = IRQ_PXA168_GPIOX,
 119                .name   = "gpio_mux",
 120                .flags  = IORESOURCE_IRQ,
 121        },
 122};
 123
 124struct platform_device pxa168_device_gpio = {
 125        .name           = "mmp-gpio",
 126        .id             = -1,
 127        .num_resources  = ARRAY_SIZE(pxa168_resource_gpio),
 128        .resource       = pxa168_resource_gpio,
 129};
 130
 131struct resource pxa168_usb_host_resources[] = {
 132        /* USB Host conroller register base */
 133        [0] = {
 134                .start  = PXA168_U2H_REGBASE + U2x_CAPREGS_OFFSET,
 135                .end    = PXA168_U2H_REGBASE + USB_REG_RANGE,
 136                .flags  = IORESOURCE_MEM,
 137                .name   = "capregs",
 138        },
 139        /* USB PHY register base */
 140        [1] = {
 141                .start  = PXA168_U2H_PHYBASE,
 142                .end    = PXA168_U2H_PHYBASE + USB_PHY_RANGE,
 143                .flags  = IORESOURCE_MEM,
 144                .name   = "phyregs",
 145        },
 146        [2] = {
 147                .start  = IRQ_PXA168_USB2,
 148                .end    = IRQ_PXA168_USB2,
 149                .flags  = IORESOURCE_IRQ,
 150        },
 151};
 152
 153static u64 pxa168_usb_host_dmamask = DMA_BIT_MASK(32);
 154struct platform_device pxa168_device_usb_host = {
 155        .name = "pxa-sph",
 156        .id   = -1,
 157        .dev  = {
 158                .dma_mask = &pxa168_usb_host_dmamask,
 159                .coherent_dma_mask = DMA_BIT_MASK(32),
 160        },
 161
 162        .num_resources = ARRAY_SIZE(pxa168_usb_host_resources),
 163        .resource      = pxa168_usb_host_resources,
 164};
 165
 166int __init pxa168_add_usb_host(struct mv_usb_platform_data *pdata)
 167{
 168        pxa168_device_usb_host.dev.platform_data = pdata;
 169        return platform_device_register(&pxa168_device_usb_host);
 170}
 171
 172void pxa168_restart(enum reboot_mode mode, const char *cmd)
 173{
 174        soft_restart(0xffff0000);
 175}
 176