2 * linux/arch/arm/mach-mmp/pxa168.c
4 * Code specific to PXA168
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <linux/module.h>
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/list.h>
16 #include <linux/clk.h>
18 #include <asm/mach/time.h>
19 #include <mach/addr-map.h>
20 #include <mach/cputype.h>
21 #include <mach/regs-apbc.h>
22 #include <mach/regs-apmu.h>
23 #include <mach/irqs.h>
24 #include <mach/gpio.h>
26 #include <mach/devices.h>
32 #define MFPR_VIRT_BASE (APB_VIRT_BASE + 0x1e000)
34 static struct mfp_addr_map pxa168_mfp_addr_map[] __initdata =
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),
44 #define APMASK(i) (GPIO_REGS_VIRT + BANK_OFF(i) + 0x09c)
46 static void __init pxa168_init_gpio(void)
50 /* enable GPIO clock */
51 __raw_writel(APBC_APBCLK | APBC_FNCLK, APBC_PXA168_GPIO);
53 /* unmask GPIO edge detection for all 4 banks - APMASKx */
54 for (i = 0; i < 4; i++)
55 __raw_writel(0xffffffff, APMASK(i));
57 pxa_init_gpio(IRQ_PXA168_GPIOX, 0, 127, NULL);
60 void __init pxa168_init_irq(void)
66 /* APB peripheral clocks */
67 static APBC_CLK(uart1, PXA168_UART1, 1, 14745600);
68 static APBC_CLK(uart2, PXA168_UART2, 1, 14745600);
69 static APBC_CLK(twsi0, PXA168_TWSI0, 1, 33000000);
70 static APBC_CLK(twsi1, PXA168_TWSI1, 1, 33000000);
71 static APBC_CLK(pwm1, PXA168_PWM1, 1, 13000000);
72 static APBC_CLK(pwm2, PXA168_PWM2, 1, 13000000);
73 static APBC_CLK(pwm3, PXA168_PWM3, 1, 13000000);
74 static APBC_CLK(pwm4, PXA168_PWM4, 1, 13000000);
75 static APBC_CLK(ssp1, PXA168_SSP1, 4, 0);
76 static APBC_CLK(ssp2, PXA168_SSP2, 4, 0);
77 static APBC_CLK(ssp3, PXA168_SSP3, 4, 0);
78 static APBC_CLK(ssp4, PXA168_SSP4, 4, 0);
79 static APBC_CLK(ssp5, PXA168_SSP5, 4, 0);
81 static APMU_CLK(nand, NAND, 0x01db, 208000000);
83 /* device and clock bindings */
84 static struct clk_lookup pxa168_clkregs[] = {
85 INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL),
86 INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL),
87 INIT_CLKREG(&clk_twsi0, "pxa2xx-i2c.0", NULL),
88 INIT_CLKREG(&clk_twsi1, "pxa2xx-i2c.1", NULL),
89 INIT_CLKREG(&clk_pwm1, "pxa168-pwm.0", NULL),
90 INIT_CLKREG(&clk_pwm2, "pxa168-pwm.1", NULL),
91 INIT_CLKREG(&clk_pwm3, "pxa168-pwm.2", NULL),
92 INIT_CLKREG(&clk_pwm4, "pxa168-pwm.3", NULL),
93 INIT_CLKREG(&clk_ssp1, "pxa168-ssp.0", NULL),
94 INIT_CLKREG(&clk_ssp2, "pxa168-ssp.1", NULL),
95 INIT_CLKREG(&clk_ssp3, "pxa168-ssp.2", NULL),
96 INIT_CLKREG(&clk_ssp4, "pxa168-ssp.3", NULL),
97 INIT_CLKREG(&clk_ssp5, "pxa168-ssp.4", NULL),
98 INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
101 static int __init pxa168_init(void)
103 if (cpu_is_pxa168()) {
104 mfp_init_base(MFPR_VIRT_BASE);
105 mfp_init_addr(pxa168_mfp_addr_map);
106 pxa_init_dma(IRQ_PXA168_DMA_INT0, 32);
107 clkdev_add_table(ARRAY_AND_SIZE(pxa168_clkregs));
112 postcore_initcall(pxa168_init);
114 /* system timer - clock enabled, 3.25MHz */
115 #define TIMER_CLK_RST (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))
117 static void __init pxa168_timer_init(void)
119 /* this is early, we have to initialize the CCU registers by
120 * ourselves instead of using clk_* API. Clock rate is defined
121 * by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running
123 __raw_writel(APBC_APBCLK | APBC_RST, APBC_PXA168_TIMERS);
125 /* 3.25MHz, bus/functional clock enabled, release reset */
126 __raw_writel(TIMER_CLK_RST, APBC_PXA168_TIMERS);
128 timer_init(IRQ_PXA168_TIMER1);
131 struct sys_timer pxa168_timer = {
132 .init = pxa168_timer_init,
135 /* on-chip devices */
136 PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
137 PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);
138 PXA168_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
139 PXA168_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);
140 PXA168_DEVICE(pwm1, "pxa168-pwm", 0, NONE, 0xd401a000, 0x10);
141 PXA168_DEVICE(pwm2, "pxa168-pwm", 1, NONE, 0xd401a400, 0x10);
142 PXA168_DEVICE(pwm3, "pxa168-pwm", 2, NONE, 0xd401a800, 0x10);
143 PXA168_DEVICE(pwm4, "pxa168-pwm", 3, NONE, 0xd401ac00, 0x10);
144 PXA168_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99);
145 PXA168_DEVICE(ssp1, "pxa168-ssp", 0, SSP1, 0xd401b000, 0x40, 52, 53);
146 PXA168_DEVICE(ssp2, "pxa168-ssp", 1, SSP2, 0xd401c000, 0x40, 54, 55);
147 PXA168_DEVICE(ssp3, "pxa168-ssp", 2, SSP3, 0xd401f000, 0x40, 56, 57);
148 PXA168_DEVICE(ssp4, "pxa168-ssp", 3, SSP4, 0xd4020000, 0x40, 58, 59);
149 PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000, 0x40, 60, 61);