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101 lines
2.2 KiB
101 lines
2.2 KiB
// 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 <[email protected]> |
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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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