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/irqs.h>
23 #include <mach/gpio.h>
25 #include <mach/devices.h>
30 #define APMASK(i) (GPIO_REGS_VIRT + BANK_OFF(i) + 0x09c)
32 static void __init pxa168_init_gpio(void)
36 /* enable GPIO clock */
37 __raw_writel(APBC_APBCLK | APBC_FNCLK, APBC_PXA168_GPIO);
39 /* unmask GPIO edge detection for all 4 banks - APMASKx */
40 for (i = 0; i < 4; i++)
41 __raw_writel(0xffffffff, APMASK(i));
43 pxa_init_gpio(IRQ_PXA168_GPIOX, 0, 127, NULL);
46 void __init pxa168_init_irq(void)
52 /* APB peripheral clocks */
53 static APBC_CLK(uart1, PXA168_UART1, 1, 14745600);
54 static APBC_CLK(uart2, PXA168_UART2, 1, 14745600);
56 /* device and clock bindings */
57 static struct clk_lookup pxa168_clkregs[] = {
58 INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL),
59 INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL),
62 static int __init pxa168_init(void)
64 if (cpu_is_pxa168()) {
65 pxa_init_dma(IRQ_PXA168_DMA_INT0, 32);
66 clks_register(ARRAY_AND_SIZE(pxa168_clkregs));
71 postcore_initcall(pxa168_init);
73 /* system timer - clock enabled, 3.25MHz */
74 #define TIMER_CLK_RST (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))
76 static void __init pxa168_timer_init(void)
78 /* this is early, we have to initialize the CCU registers by
79 * ourselves instead of using clk_* API. Clock rate is defined
80 * by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running
82 __raw_writel(APBC_APBCLK | APBC_RST, APBC_PXA168_TIMERS);
84 /* 3.25MHz, bus/functional clock enabled, release reset */
85 __raw_writel(TIMER_CLK_RST, APBC_PXA168_TIMERS);
87 timer_init(IRQ_PXA168_TIMER1);
90 struct sys_timer pxa168_timer = {
91 .init = pxa168_timer_init,
95 PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
96 PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);