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174 lines
4.3 KiB
174 lines
4.3 KiB
/* |
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* Platform setup for the Embedded Planet EP88xC board |
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* |
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* Author: Scott Wood <[email protected]> |
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* Copyright 2007 Freescale Semiconductor, Inc. |
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* |
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* This file is licensed under the terms of the GNU General Public License |
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* version 2. This program is licensed "as is" without any warranty of any |
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* kind, whether express or implied. |
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*/ |
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#include <linux/init.h> |
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#include <linux/of_address.h> |
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#include <linux/of_fdt.h> |
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#include <linux/of_platform.h> |
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#include <asm/machdep.h> |
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#include <asm/io.h> |
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#include <asm/udbg.h> |
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#include <asm/cpm1.h> |
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#include "mpc8xx.h" |
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struct cpm_pin { |
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int port, pin, flags; |
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}; |
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static struct cpm_pin ep88xc_pins[] = { |
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/* SMC1 */ |
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{1, 24, CPM_PIN_INPUT}, /* RX */ |
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{1, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */ |
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/* SCC2 */ |
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{0, 12, CPM_PIN_INPUT}, /* TX */ |
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{0, 13, CPM_PIN_INPUT}, /* RX */ |
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{2, 8, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CD */ |
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{2, 9, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CTS */ |
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{2, 14, CPM_PIN_INPUT}, /* RTS */ |
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/* MII1 */ |
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{0, 0, CPM_PIN_INPUT}, |
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{0, 1, CPM_PIN_INPUT}, |
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{0, 2, CPM_PIN_INPUT}, |
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{0, 3, CPM_PIN_INPUT}, |
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{0, 4, CPM_PIN_OUTPUT}, |
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{0, 10, CPM_PIN_OUTPUT}, |
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{0, 11, CPM_PIN_OUTPUT}, |
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{1, 19, CPM_PIN_INPUT}, |
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{1, 31, CPM_PIN_INPUT}, |
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{2, 12, CPM_PIN_INPUT}, |
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{2, 13, CPM_PIN_INPUT}, |
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{3, 8, CPM_PIN_INPUT}, |
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{4, 30, CPM_PIN_OUTPUT}, |
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{4, 31, CPM_PIN_OUTPUT}, |
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/* MII2 */ |
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{4, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
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{4, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
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{4, 16, CPM_PIN_OUTPUT}, |
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{4, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
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{4, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
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{4, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
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{4, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
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{4, 21, CPM_PIN_OUTPUT}, |
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{4, 22, CPM_PIN_OUTPUT}, |
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{4, 23, CPM_PIN_OUTPUT}, |
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{4, 24, CPM_PIN_OUTPUT}, |
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{4, 25, CPM_PIN_OUTPUT}, |
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{4, 26, CPM_PIN_OUTPUT}, |
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{4, 27, CPM_PIN_OUTPUT}, |
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{4, 28, CPM_PIN_OUTPUT}, |
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{4, 29, CPM_PIN_OUTPUT}, |
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/* USB */ |
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{0, 6, CPM_PIN_INPUT}, /* CLK2 */ |
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{0, 14, CPM_PIN_INPUT}, /* USBOE */ |
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{0, 15, CPM_PIN_INPUT}, /* USBRXD */ |
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{2, 6, CPM_PIN_OUTPUT}, /* USBTXN */ |
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{2, 7, CPM_PIN_OUTPUT}, /* USBTXP */ |
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{2, 10, CPM_PIN_INPUT}, /* USBRXN */ |
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{2, 11, CPM_PIN_INPUT}, /* USBRXP */ |
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/* Misc */ |
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{1, 26, CPM_PIN_INPUT}, /* BRGO2 */ |
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{1, 27, CPM_PIN_INPUT}, /* BRGO1 */ |
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}; |
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static void __init init_ioports(void) |
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{ |
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int i; |
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for (i = 0; i < ARRAY_SIZE(ep88xc_pins); i++) { |
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struct cpm_pin *pin = &ep88xc_pins[i]; |
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cpm1_set_pin(pin->port, pin->pin, pin->flags); |
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} |
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cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX); |
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cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_TX); /* USB */ |
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cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX); |
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cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX); |
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cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX); |
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} |
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static u8 __iomem *ep88xc_bcsr; |
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#define BCSR7_SCC2_ENABLE 0x10 |
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#define BCSR8_PHY1_ENABLE 0x80 |
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#define BCSR8_PHY1_POWER 0x40 |
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#define BCSR8_PHY2_ENABLE 0x20 |
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#define BCSR8_PHY2_POWER 0x10 |
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#define BCSR9_USB_ENABLE 0x80 |
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#define BCSR9_USB_POWER 0x40 |
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#define BCSR9_USB_HOST 0x20 |
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#define BCSR9_USB_FULL_SPEED_TARGET 0x10 |
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static void __init ep88xc_setup_arch(void) |
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{ |
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struct device_node *np; |
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cpm_reset(); |
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init_ioports(); |
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np = of_find_compatible_node(NULL, NULL, "fsl,ep88xc-bcsr"); |
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if (!np) { |
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printk(KERN_CRIT "Could not find fsl,ep88xc-bcsr node\n"); |
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return; |
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} |
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ep88xc_bcsr = of_iomap(np, 0); |
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of_node_put(np); |
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if (!ep88xc_bcsr) { |
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printk(KERN_CRIT "Could not remap BCSR\n"); |
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return; |
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} |
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setbits8(&ep88xc_bcsr[7], BCSR7_SCC2_ENABLE); |
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setbits8(&ep88xc_bcsr[8], BCSR8_PHY1_ENABLE | BCSR8_PHY1_POWER | |
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BCSR8_PHY2_ENABLE | BCSR8_PHY2_POWER); |
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} |
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static int __init ep88xc_probe(void) |
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{ |
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return of_machine_is_compatible("fsl,ep88xc"); |
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} |
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static const struct of_device_id of_bus_ids[] __initconst = { |
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{ .name = "soc", }, |
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{ .name = "cpm", }, |
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{ .name = "localbus", }, |
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{}, |
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}; |
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static int __init declare_of_platform_devices(void) |
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{ |
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/* Publish the QE devices */ |
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of_platform_bus_probe(NULL, of_bus_ids, NULL); |
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return 0; |
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} |
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machine_device_initcall(ep88xc, declare_of_platform_devices); |
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define_machine(ep88xc) { |
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.name = "Embedded Planet EP88xC", |
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.probe = ep88xc_probe, |
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.setup_arch = ep88xc_setup_arch, |
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.init_IRQ = mpc8xx_pics_init, |
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.get_irq = mpc8xx_get_irq, |
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.restart = mpc8xx_restart, |
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.calibrate_decr = mpc8xx_calibrate_decr, |
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.progress = udbg_progress, |
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};
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