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fd99ac5055
The ralink_of_remap() function is repeated several times on SoC specific source files. They have the same structure, but just differ in compatible strings. In order to make commonly use of these codes, this patch introduces a newly designed mtmips_of_remap_node() function to match and remap all supported system controller and memory controller nodes. Build and run tested on MT7620 and MT7628. Signed-off-by: Shiji Yang <yangshiji66@outlook.com> Reviewed-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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*
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* Parts of this file are based on Ralink's 2.6.21 BSP
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*
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* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
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* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2013 John Crispin <john@phrozen.org>
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/sys_soc.h>
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#include <asm/mipsregs.h>
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#include <asm/mach-ralink/ralink_regs.h>
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#include <asm/mach-ralink/rt3883.h>
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#include "common.h"
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static struct ralink_soc_info *soc_info_ptr;
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static unsigned int __init rt3883_get_soc_name0(void)
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{
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return __raw_readl(RT3883_SYSC_BASE + RT3883_SYSC_REG_CHIPID0_3);
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}
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static unsigned int __init rt3883_get_soc_name1(void)
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{
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return __raw_readl(RT3883_SYSC_BASE + RT3883_SYSC_REG_CHIPID4_7);
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}
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static bool __init rt3883_soc_valid(void)
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{
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if (rt3883_get_soc_name0() == RT3883_CHIP_NAME0 &&
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rt3883_get_soc_name1() == RT3883_CHIP_NAME1)
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return true;
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else
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return false;
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}
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static const char __init *rt3883_get_soc_name(void)
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{
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if (rt3883_soc_valid())
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return "RT3883";
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else
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return "invalid";
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}
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static unsigned int __init rt3883_get_soc_id(void)
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{
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return __raw_readl(RT3883_SYSC_BASE + RT3883_SYSC_REG_REVID);
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}
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static unsigned int __init rt3883_get_soc_ver(void)
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{
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return (rt3883_get_soc_id() >> RT3883_REVID_VER_ID_SHIFT) & RT3883_REVID_VER_ID_MASK;
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}
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static unsigned int __init rt3883_get_soc_rev(void)
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{
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return (rt3883_get_soc_id() & RT3883_REVID_ECO_ID_MASK);
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}
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static int __init rt3883_soc_dev_init(void)
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{
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struct soc_device *soc_dev;
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struct soc_device_attribute *soc_dev_attr;
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soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
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if (!soc_dev_attr)
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return -ENOMEM;
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soc_dev_attr->family = "Ralink";
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soc_dev_attr->soc_id = rt3883_get_soc_name();
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soc_dev_attr->data = soc_info_ptr;
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soc_dev = soc_device_register(soc_dev_attr);
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if (IS_ERR(soc_dev)) {
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kfree(soc_dev_attr);
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return PTR_ERR(soc_dev);
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}
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return 0;
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}
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device_initcall(rt3883_soc_dev_init);
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void __init prom_soc_init(struct ralink_soc_info *soc_info)
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{
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if (rt3883_soc_valid())
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soc_info->compatible = "ralink,rt3883-soc";
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else
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panic("rt3883: unknown SoC, n0:%08x n1:%08x",
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rt3883_get_soc_name0(), rt3883_get_soc_name1());
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snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN,
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"Ralink %s ver:%u eco:%u",
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rt3883_get_soc_name(),
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rt3883_get_soc_ver(),
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rt3883_get_soc_rev());
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soc_info->mem_base = RT3883_SDRAM_BASE;
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soc_info->mem_size_min = RT3883_MEM_SIZE_MIN;
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soc_info->mem_size_max = RT3883_MEM_SIZE_MAX;
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ralink_soc = RT3883_SOC;
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soc_info_ptr = soc_info;
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}
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