102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* arch/powerpc/platforms/83xx/mpc834x_mds.c
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*
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* MPC834x MDS board specific routines
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*
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* Maintainer: Kumar Gala <galak@kernel.crashing.org>
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/reboot.h>
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#include <linux/pci.h>
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#include <linux/kdev_t.h>
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#include <linux/major.h>
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#include <linux/console.h>
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#include <linux/delay.h>
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#include <linux/seq_file.h>
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#include <linux/root_dev.h>
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#include <linux/of_platform.h>
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#include <linux/atomic.h>
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#include <asm/time.h>
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#include <asm/io.h>
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#include <asm/machdep.h>
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#include <asm/ipic.h>
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#include <asm/irq.h>
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#include <asm/prom.h>
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#include <asm/udbg.h>
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#include <sysdev/fsl_soc.h>
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#include <sysdev/fsl_pci.h>
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#include "mpc83xx.h"
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#define BCSR5_INT_USB 0x02
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static int mpc834xemds_usb_cfg(void)
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{
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struct device_node *np;
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void __iomem *bcsr_regs = NULL;
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u8 bcsr5;
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mpc834x_usb_cfg();
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/* Map BCSR area */
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np = of_find_node_by_name(NULL, "bcsr");
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if (np) {
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struct resource res;
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of_address_to_resource(np, 0, &res);
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bcsr_regs = ioremap(res.start, resource_size(&res));
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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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/*
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* if Processor Board is plugged into PIB board,
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* force to use the PHY on Processor Board
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*/
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bcsr5 = in_8(bcsr_regs + 5);
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if (!(bcsr5 & BCSR5_INT_USB))
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out_8(bcsr_regs + 5, (bcsr5 | BCSR5_INT_USB));
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iounmap(bcsr_regs);
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return 0;
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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 mpc834x_mds_setup_arch(void)
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{
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mpc83xx_setup_arch();
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mpc834xemds_usb_cfg();
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}
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machine_device_initcall(mpc834x_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 mpc834x_mds_probe(void)
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{
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return of_machine_is_compatible("MPC834xMDS");
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}
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define_machine(mpc834x_mds) {
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.name = "MPC834x MDS",
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.probe = mpc834x_mds_probe,
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.setup_arch = mpc834x_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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