1402f75d9b
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230803-dt-header-cleanups-for-soc-v2-14-d8de2cc88bff@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
193 lines
4.6 KiB
C
193 lines
4.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2012 (C), Jason Cooper <jason@lakedaemon.net>
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*
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* arch/arm/mach-mvebu/kirkwood.c
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*
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* Flattened Device Tree board initialization
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*/
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#include <linux/clk.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/mbus.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_net.h>
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <asm/hardware/cache-feroceon-l2.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include "kirkwood.h"
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#include "kirkwood-pm.h"
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#include "common.h"
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static struct resource kirkwood_cpufreq_resources[] = {
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[0] = {
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.start = CPU_CONTROL_PHYS,
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.end = CPU_CONTROL_PHYS + 3,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device kirkwood_cpufreq_device = {
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.name = "kirkwood-cpufreq",
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.id = -1,
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.num_resources = ARRAY_SIZE(kirkwood_cpufreq_resources),
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.resource = kirkwood_cpufreq_resources,
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};
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static void __init kirkwood_cpufreq_init(void)
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{
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platform_device_register(&kirkwood_cpufreq_device);
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}
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static struct resource kirkwood_cpuidle_resource[] = {
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{
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.flags = IORESOURCE_MEM,
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.start = DDR_OPERATION_BASE,
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.end = DDR_OPERATION_BASE + 3,
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},
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};
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static struct platform_device kirkwood_cpuidle = {
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.name = "kirkwood_cpuidle",
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.id = -1,
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.resource = kirkwood_cpuidle_resource,
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.num_resources = 1,
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};
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static void __init kirkwood_cpuidle_init(void)
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{
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platform_device_register(&kirkwood_cpuidle);
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}
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#define MV643XX_ETH_MAC_ADDR_LOW 0x0414
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#define MV643XX_ETH_MAC_ADDR_HIGH 0x0418
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static void __init kirkwood_dt_eth_fixup(void)
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{
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struct device_node *np;
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/*
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* The ethernet interfaces forget the MAC address assigned by u-boot
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* if the clocks are turned off. Usually, u-boot on kirkwood boards
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* has no DT support to properly set local-mac-address property.
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* As a workaround, we get the MAC address from mv643xx_eth registers
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* and update the port device node if no valid MAC address is set.
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*/
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for_each_compatible_node(np, NULL, "marvell,kirkwood-eth-port") {
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struct device_node *pnp = of_get_parent(np);
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struct clk *clk;
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struct property *pmac;
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u8 tmpmac[ETH_ALEN];
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void __iomem *io;
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u8 *macaddr;
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u32 reg;
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if (!pnp)
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continue;
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/* skip disabled nodes or nodes with valid MAC address*/
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if (!of_device_is_available(pnp) ||
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!of_get_mac_address(np, tmpmac))
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goto eth_fixup_skip;
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clk = of_clk_get(pnp, 0);
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if (IS_ERR(clk))
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goto eth_fixup_skip;
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io = of_iomap(pnp, 0);
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if (!io)
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goto eth_fixup_no_map;
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/* ensure port clock is not gated to not hang CPU */
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clk_prepare_enable(clk);
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/* store MAC address register contents in local-mac-address */
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pmac = kzalloc(sizeof(*pmac) + 6, GFP_KERNEL);
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if (!pmac)
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goto eth_fixup_no_mem;
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pmac->value = pmac + 1;
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pmac->length = 6;
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pmac->name = kstrdup("local-mac-address", GFP_KERNEL);
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if (!pmac->name) {
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kfree(pmac);
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goto eth_fixup_no_mem;
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}
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macaddr = pmac->value;
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reg = readl(io + MV643XX_ETH_MAC_ADDR_HIGH);
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macaddr[0] = (reg >> 24) & 0xff;
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macaddr[1] = (reg >> 16) & 0xff;
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macaddr[2] = (reg >> 8) & 0xff;
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macaddr[3] = reg & 0xff;
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reg = readl(io + MV643XX_ETH_MAC_ADDR_LOW);
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macaddr[4] = (reg >> 8) & 0xff;
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macaddr[5] = reg & 0xff;
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of_update_property(np, pmac);
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eth_fixup_no_mem:
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iounmap(io);
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clk_disable_unprepare(clk);
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eth_fixup_no_map:
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clk_put(clk);
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eth_fixup_skip:
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of_node_put(pnp);
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}
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}
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/*
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* Disable propagation of mbus errors to the CPU local bus, as this
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* causes mbus errors (which can occur for example for PCI aborts) to
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* throw CPU aborts, which we're not set up to deal with.
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*/
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static void kirkwood_disable_mbus_error_propagation(void)
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{
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void __iomem *cpu_config;
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cpu_config = ioremap(CPU_CONFIG_PHYS, 4);
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writel(readl(cpu_config) & ~CPU_CONFIG_ERROR_PROP, cpu_config);
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}
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static struct of_dev_auxdata auxdata[] __initdata = {
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OF_DEV_AUXDATA("marvell,kirkwood-audio", 0xf10a0000,
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"mvebu-audio", NULL),
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{ /* sentinel */ }
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};
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static void __init kirkwood_dt_init(void)
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{
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kirkwood_disable_mbus_error_propagation();
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BUG_ON(mvebu_mbus_dt_init(false));
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#ifdef CONFIG_CACHE_FEROCEON_L2
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feroceon_of_init();
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#endif
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kirkwood_cpufreq_init();
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kirkwood_cpuidle_init();
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kirkwood_pm_init();
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kirkwood_dt_eth_fixup();
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of_platform_default_populate(NULL, auxdata, NULL);
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}
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static const char * const kirkwood_dt_board_compat[] __initconst = {
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"marvell,kirkwood",
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NULL
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};
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DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
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/* Maintainer: Jason Cooper <jason@lakedaemon.net> */
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.init_machine = kirkwood_dt_init,
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.restart = mvebu_restart,
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.dt_compat = kirkwood_dt_board_compat,
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MACHINE_END
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