Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright 2010-2011, 2013 Freescale Semiconductor, Inc.
 *
 * Author: Roy Zang <tie-fei.zang@freescale.com>
 *
 * Description:
 * P1023 RDB Board Setup
 */
 
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/fsl_devices.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>
 
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <mm/mmu_decl.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <asm/mpic.h>
#include "smp.h"
 
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
 
#include "mpc85xx.h"
 
/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init mpc85xx_rdb_setup_arch(void)
{
<------>struct device_node *np;
 
<------>if (ppc_md.progress)
<------><------>ppc_md.progress("p1023_rdb_setup_arch()", 0);
 
<------>/* Map BCSR area */
<------>np = of_find_node_by_name(NULL, "bcsr");
<------>if (np != NULL) {
<------><------>static u8 __iomem *bcsr_regs;
 
<------><------>bcsr_regs = of_iomap(np, 0);
<------><------>of_node_put(np);
 
<------><------>if (!bcsr_regs) {
<------><------><------>printk(KERN_ERR
<------><------><------>       "BCSR: Failed to map bcsr register space\n");
<------><------><------>return;
<------><------>} else {
#define BCSR15_I2C_BUS0_SEG_CLR		0x07
#define BCSR15_I2C_BUS0_SEG2		0x02
/*
 * Note: Accessing exclusively i2c devices.
 *
 * The i2c controller selects initially ID EEPROM in the u-boot;
 * but if menu configuration selects RTC support in the kernel,
 * the i2c controller switches to select RTC chip in the kernel.
 */
#ifdef CONFIG_RTC_CLASS
<------><------><------>/* Enable RTC chip on the segment #2 of i2c */
<------><------><------>clrbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG_CLR);
<------><------><------>setbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG2);
#endif
 
<------><------><------>iounmap(bcsr_regs);
<------><------>}
<------>}
 
<------>mpc85xx_smp_init();
 
<------>fsl_pci_assign_primary();
}
 
machine_arch_initcall(p1023_rdb, mpc85xx_common_publish_devices);
 
static void __init mpc85xx_rdb_pic_init(void)
{
<------>struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
<------><------>MPIC_SINGLE_DEST_CPU,
<------><------>0, 256, " OpenPIC  ");
 
<------>BUG_ON(mpic == NULL);
 
<------>mpic_init(mpic);
}
 
static int __init p1023_rdb_probe(void)
{
<------>return of_machine_is_compatible("fsl,P1023RDB");
 
}
 
define_machine(p1023_rdb) {
<------>.name			= "P1023 RDB",
<------>.probe			= p1023_rdb_probe,
<------>.setup_arch		= mpc85xx_rdb_setup_arch,
<------>.init_IRQ		= mpc85xx_rdb_pic_init,
<------>.get_irq		= mpic_get_irq,
<------>.calibrate_decr		= generic_calibrate_decr,
<------>.progress		= udbg_progress,
#ifdef CONFIG_PCI
<------>.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
<------>.pcibios_fixup_phb      = fsl_pcibios_fixup_phb,
#endif
};