104 lines
2.4 KiB
C
104 lines
2.4 KiB
C
// 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_address.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 <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 __init 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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