/* * Platform setup for the Freescale mpc885ads board * * Vitaly Bordug <vbordug@ru.mvista.com> * * Copyright 2005 MontaVista Software Inc. * * Heavily modified by Scott Wood <scottwood@freescale.com> * Copyright 2007 Freescale Semiconductor, Inc. * * This file is licensed under the terms of the GNU General Public License * version 2. This program is licensed "as is" without any warranty of any * kind, whether express or implied. */ #include <linux/init.h> #include <linux/module.h> #include <linux/param.h> #include <linux/string.h> #include <linux/ioport.h> #include <linux/device.h> #include <linux/delay.h> #include <linux/fs_enet_pd.h> #include <linux/fs_uart_pd.h> #include <linux/fsl_devices.h> #include <linux/mii.h> #include <linux/of_address.h> #include <linux/of_fdt.h> #include <linux/of_platform.h> #include <asm/delay.h> #include <asm/io.h> #include <asm/machdep.h> #include <asm/page.h> #include <asm/processor.h> #include <asm/time.h> #include <asm/mpc8xx.h> #include <asm/8xx_immap.h> #include <asm/cpm1.h> #include <asm/fs_pd.h> #include <asm/udbg.h> #include "mpc885ads.h" #include "mpc8xx.h" static u32 __iomem *bcsr, *bcsr5; #ifdef CONFIG_PCMCIA_M8XX static void pcmcia_hw_setup(int slot, int enable) { if (enable) clrbits32(&bcsr[1], BCSR1_PCCEN); else setbits32(&bcsr[1], BCSR1_PCCEN); } static int pcmcia_set_voltage(int slot, int vcc, int vpp) { u32 reg = 0; switch (vcc) { case 0: break; case 33: reg |= BCSR1_PCCVCC0; break; case 50: reg |= BCSR1_PCCVCC1; break; default: return 1; } switch (vpp) { case 0: break; case 33: case 50: if (vcc == vpp) reg |= BCSR1_PCCVPP1; else return 1; break; case 120: if ((vcc == 33) || (vcc == 50)) reg |= BCSR1_PCCVPP0; else return 1; default: return 1; } /* first, turn off all power */ clrbits32(&bcsr[1], 0x00610000); /* enable new powersettings */ setbits32(&bcsr[1], reg); return 0; } #endif struct cpm_pin { int port, pin, flags; }; static struct cpm_pin mpc885ads_pins[] = { /* SMC1 */ {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */ {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */ /* SMC2 */ #ifndef CONFIG_MPC8xx_SECOND_ETH_FEC2 {CPM_PORTE, 21, CPM_PIN_INPUT}, /* RX */ {CPM_PORTE, 20, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */ #endif /* SCC3 */ {CPM_PORTA, 9, CPM_PIN_INPUT}, /* RX */ {CPM_PORTA, 8, CPM_PIN_INPUT}, /* TX */ {CPM_PORTC, 4, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* RENA */ {CPM_PORTC, 5, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CLSN */ {CPM_PORTE, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */ {CPM_PORTE, 17, CPM_PIN_INPUT}, /* CLK5 */ {CPM_PORTE, 16, CPM_PIN_INPUT}, /* CLK6 */ /* MII1 */ {CPM_PORTA, 0, CPM_PIN_INPUT}, {CPM_PORTA, 1, CPM_PIN_INPUT}, {CPM_PORTA, 2, CPM_PIN_INPUT}, {CPM_PORTA, 3, CPM_PIN_INPUT}, {CPM_PORTA, 4, CPM_PIN_OUTPUT}, {CPM_PORTA, 10, CPM_PIN_OUTPUT}, {CPM_PORTA, 11, CPM_PIN_OUTPUT}, {CPM_PORTB, 19, CPM_PIN_INPUT}, {CPM_PORTB, 31, CPM_PIN_INPUT}, {CPM_PORTC, 12, CPM_PIN_INPUT}, {CPM_PORTC, 13, CPM_PIN_INPUT}, {CPM_PORTE, 30, CPM_PIN_OUTPUT}, {CPM_PORTE, 31, CPM_PIN_OUTPUT}, /* MII2 */ #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2 {CPM_PORTE, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, {CPM_PORTE, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, {CPM_PORTE, 16, CPM_PIN_OUTPUT}, {CPM_PORTE, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, {CPM_PORTE, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, {CPM_PORTE, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, {CPM_PORTE, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, {CPM_PORTE, 21, CPM_PIN_OUTPUT}, {CPM_PORTE, 22, CPM_PIN_OUTPUT}, {CPM_PORTE, 23, CPM_PIN_OUTPUT}, {CPM_PORTE, 24, CPM_PIN_OUTPUT}, {CPM_PORTE, 25, CPM_PIN_OUTPUT}, {CPM_PORTE, 26, CPM_PIN_OUTPUT}, {CPM_PORTE, 27, CPM_PIN_OUTPUT}, {CPM_PORTE, 28, CPM_PIN_OUTPUT}, {CPM_PORTE, 29, CPM_PIN_OUTPUT}, #endif /* I2C */ {CPM_PORTB, 26, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN}, {CPM_PORTB, 27, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN}, }; static void __init init_ioports(void) { int i; for (i = 0; i < ARRAY_SIZE(mpc885ads_pins); i++) { struct cpm_pin *pin = &mpc885ads_pins[i]; cpm1_set_pin(pin->port, pin->pin, pin->flags); } cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX); cpm1_clk_setup(CPM_CLK_SMC2, CPM_BRG2, CPM_CLK_RTX); cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK5, CPM_CLK_TX); cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK6, CPM_CLK_RX); /* Set FEC1 and FEC2 to MII mode */ clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180); } static void __init mpc885ads_setup_arch(void) { struct device_node *np; cpm_reset(); init_ioports(); np = of_find_compatible_node(NULL, NULL, "fsl,mpc885ads-bcsr"); if (!np) { printk(KERN_CRIT "Could not find fsl,mpc885ads-bcsr node\n"); return; } bcsr = of_iomap(np, 0); bcsr5 = of_iomap(np, 1); of_node_put(np); if (!bcsr || !bcsr5) { printk(KERN_CRIT "Could not remap BCSR\n"); return; } clrbits32(&bcsr[1], BCSR1_RS232EN_1); #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2 setbits32(&bcsr[1], BCSR1_RS232EN_2); #else clrbits32(&bcsr[1], BCSR1_RS232EN_2); #endif clrbits32(bcsr5, BCSR5_MII1_EN); setbits32(bcsr5, BCSR5_MII1_RST); udelay(1000); clrbits32(bcsr5, BCSR5_MII1_RST); #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2 clrbits32(bcsr5, BCSR5_MII2_EN); setbits32(bcsr5, BCSR5_MII2_RST); udelay(1000); clrbits32(bcsr5, BCSR5_MII2_RST); #else setbits32(bcsr5, BCSR5_MII2_EN); #endif #ifdef CONFIG_MPC8xx_SECOND_ETH_SCC3 clrbits32(&bcsr[4], BCSR4_ETH10_RST); udelay(1000); setbits32(&bcsr[4], BCSR4_ETH10_RST); setbits32(&bcsr[1], BCSR1_ETHEN); np = of_find_node_by_path("/soc@ff000000/cpm@9c0/serial@a80"); #else np = of_find_node_by_path("/soc@ff000000/cpm@9c0/ethernet@a40"); #endif /* The SCC3 enet registers overlap the SMC1 registers, so * one of the two must be removed from the device tree. */ if (np) { of_detach_node(np); of_node_put(np); } #ifdef CONFIG_PCMCIA_M8XX /* Set up board specific hook-ups.*/ m8xx_pcmcia_ops.hw_ctrl = pcmcia_hw_setup; m8xx_pcmcia_ops.voltage_set = pcmcia_set_voltage; #endif } static int __init mpc885ads_probe(void) { unsigned long root = of_get_flat_dt_root(); return of_flat_dt_is_compatible(root, "fsl,mpc885ads"); } static struct of_device_id __initdata of_bus_ids[] = { { .name = "soc", }, { .name = "cpm", }, { .name = "localbus", }, {}, }; static int __init declare_of_platform_devices(void) { /* Publish the QE devices */ of_platform_bus_probe(NULL, of_bus_ids, NULL); return 0; } machine_device_initcall(mpc885_ads, declare_of_platform_devices); define_machine(mpc885_ads) { .name = "Freescale MPC885 ADS", .probe = mpc885ads_probe, .setup_arch = mpc885ads_setup_arch, .init_IRQ = mpc8xx_pics_init, .get_irq = mpc8xx_get_irq, .restart = mpc8xx_restart, .calibrate_decr = mpc8xx_calibrate_decr, .set_rtc_time = mpc8xx_set_rtc_time, .get_rtc_time = mpc8xx_get_rtc_time, .progress = udbg_progress, };