pxa168.c (4897B)
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}