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103 lines
2.3 KiB
103 lines
2.3 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* arch/powerpc/platforms/83xx/mpc837x_mds.c |
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* |
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* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. |
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* |
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* MPC837x MDS board specific routines |
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*/ |
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#include <linux/pci.h> |
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#include <linux/of.h> |
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#include <linux/of_platform.h> |
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#include <asm/time.h> |
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#include <asm/ipic.h> |
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#include <asm/udbg.h> |
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#include <asm/prom.h> |
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#include <sysdev/fsl_pci.h> |
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#include "mpc83xx.h" |
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#define BCSR12_USB_SER_MASK 0x8a |
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#define BCSR12_USB_SER_PIN 0x80 |
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#define BCSR12_USB_SER_DEVICE 0x02 |
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static int mpc837xmds_usb_cfg(void) |
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{ |
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struct device_node *np; |
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const void *phy_type, *mode; |
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void __iomem *bcsr_regs = NULL; |
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u8 bcsr12; |
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int ret; |
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ret = mpc837x_usb_cfg(); |
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if (ret) |
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return ret; |
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/* Map BCSR area */ |
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np = of_find_compatible_node(NULL, NULL, "fsl,mpc837xmds-bcsr"); |
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if (np) { |
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bcsr_regs = of_iomap(np, 0); |
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of_node_put(np); |
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} |
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if (!bcsr_regs) |
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return -1; |
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np = of_find_node_by_name(NULL, "usb"); |
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if (!np) { |
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ret = -ENODEV; |
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goto out; |
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} |
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phy_type = of_get_property(np, "phy_type", NULL); |
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if (phy_type && !strcmp(phy_type, "ulpi")) { |
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clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN); |
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} else if (phy_type && !strcmp(phy_type, "serial")) { |
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mode = of_get_property(np, "dr_mode", NULL); |
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bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK; |
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bcsr12 |= BCSR12_USB_SER_PIN; |
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if (mode && !strcmp(mode, "peripheral")) |
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bcsr12 |= BCSR12_USB_SER_DEVICE; |
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out_8(bcsr_regs + 12, bcsr12); |
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} else { |
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printk(KERN_ERR "USB DR: unsupported PHY\n"); |
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} |
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of_node_put(np); |
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out: |
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iounmap(bcsr_regs); |
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return ret; |
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} |
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/* ************************************************************************ |
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* |
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* Setup the architecture |
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* |
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*/ |
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static void __init mpc837x_mds_setup_arch(void) |
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{ |
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mpc83xx_setup_arch(); |
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mpc837xmds_usb_cfg(); |
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} |
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machine_device_initcall(mpc837x_mds, mpc83xx_declare_of_platform_devices); |
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/* |
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* Called very early, MMU is off, device-tree isn't unflattened |
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*/ |
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static int __init mpc837x_mds_probe(void) |
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{ |
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return of_machine_is_compatible("fsl,mpc837xmds"); |
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} |
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define_machine(mpc837x_mds) { |
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.name = "MPC837x MDS", |
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.probe = mpc837x_mds_probe, |
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.setup_arch = mpc837x_mds_setup_arch, |
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.discover_phbs = mpc83xx_setup_pci, |
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.init_IRQ = mpc83xx_ipic_init_IRQ, |
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.get_irq = ipic_get_irq, |
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.restart = mpc83xx_restart, |
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.time_init = mpc83xx_time_init, |
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.calibrate_decr = generic_calibrate_decr, |
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.progress = udbg_progress, |
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};
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