arch/arm/mach-mmp/pxa168.c

   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
  34 static 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
  44 void __init pxa168_init_irq(void)
  45 {
  46         icu_init_irq();
  47 }
  48
  49 static 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 }
  61 postcore_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
  67 void __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
  81 void 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 */
  92 PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
  93 PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);
  94 PXA168_DEVICE(uart3, "pxa2xx-uart", 2, UART3, 0xd4026000, 0x30, 23, 24);
  95 PXA168_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
  96 PXA168_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);
  97 PXA168_DEVICE(pwm1, "pxa168-pwm", 0, NONE, 0xd401a000, 0x10);
  98 PXA168_DEVICE(pwm2, "pxa168-pwm", 1, NONE, 0xd401a400, 0x10);
  99 PXA168_DEVICE(pwm3, "pxa168-pwm", 2, NONE, 0xd401a800, 0x10);
 100 PXA168_DEVICE(pwm4, "pxa168-pwm", 3, NONE, 0xd401ac00, 0x10);
 101 PXA168_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99);
 102 PXA168_DEVICE(ssp1, "pxa168-ssp", 0, SSP1, 0xd401b000, 0x40, 52, 53);
 103 PXA168_DEVICE(ssp2, "pxa168-ssp", 1, SSP2, 0xd401c000, 0x40, 54, 55);
 104 PXA168_DEVICE(ssp3, "pxa168-ssp", 2, SSP3, 0xd401f000, 0x40, 56, 57);
 105 PXA168_DEVICE(ssp4, "pxa168-ssp", 3, SSP4, 0xd4020000, 0x40, 58, 59);
 106 PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000, 0x40, 60, 61);
 107 PXA168_DEVICE(fb, "pxa168-fb", -1, LCD, 0xd420b000, 0x1c8);
 108 PXA168_DEVICE(keypad, "pxa27x-keypad", -1, KEYPAD, 0xd4012000, 0x4c);
 109 PXA168_DEVICE(eth, "pxa168-eth", -1, MFU, 0xc0800000, 0x0fff);
 110
 111 struct 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
 124 struct 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
 131 struct 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
 153 static u64 pxa168_usb_host_dmamask = DMA_BIT_MASK(32);
 154 struct 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
 166 int __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
 172 void pxa168_restart(enum reboot_mode mode, const char *cmd)
 173 {
 174         soft_restart(0xffff0000);
 175 }