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kirkwood_setup_wins is the last manual caller of mbus in kirkwood, don't call it for DT boards and rely on the DT having a mbus node with a proper ranges property to setup these windows. Move all the mbus ranges properties for all boards into kirkwood.dtsi, since they are currently all the same. This makes the DT self consistent, since the physical address of the NAND and CRYPTO are both referenced internally. The arbitary Linux constants KIRKWOOD_NAND_MEM_PHYS_BASE and KIRKWOOD_SRAM_PHYS_BASE no longer have to match the DT values. Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
129 lines
3.2 KiB
C
129 lines
3.2 KiB
C
/*
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* Copyright 2012 (C), Jason Cooper <jason@lakedaemon.net>
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*
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* arch/arm/mach-kirkwood/board-dt.c
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*
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* Flattened Device Tree board initialization
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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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/of.h>
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#include <linux/of_platform.h>
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#include <linux/clk-provider.h>
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#include <linux/clocksource.h>
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#include <linux/dma-mapping.h>
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#include <linux/irqchip.h>
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#include <linux/kexec.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <mach/bridge-regs.h>
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#include <linux/platform_data/usb-ehci-orion.h>
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#include <plat/irq.h>
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#include <plat/common.h>
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#include "common.h"
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/*
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* There are still devices that doesn't know about DT yet. Get clock
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* gates here and add a clock lookup alias, so that old platform
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* devices still work.
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*/
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static void __init kirkwood_legacy_clk_init(void)
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{
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struct device_node *np = of_find_compatible_node(
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NULL, NULL, "marvell,kirkwood-gating-clock");
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struct of_phandle_args clkspec;
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struct clk *clk;
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clkspec.np = np;
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clkspec.args_count = 1;
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clkspec.args[0] = CGC_BIT_PEX0;
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orion_clkdev_add("0", "pcie",
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of_clk_get_from_provider(&clkspec));
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clkspec.args[0] = CGC_BIT_PEX1;
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orion_clkdev_add("1", "pcie",
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of_clk_get_from_provider(&clkspec));
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/*
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* The ethernet interfaces forget the MAC address assigned by
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* u-boot if the clocks are turned off. Until proper DT support
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* is available we always enable them for now.
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*/
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clkspec.args[0] = CGC_BIT_GE0;
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clk = of_clk_get_from_provider(&clkspec);
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clk_prepare_enable(clk);
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clkspec.args[0] = CGC_BIT_GE1;
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clk = of_clk_get_from_provider(&clkspec);
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clk_prepare_enable(clk);
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}
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static void __init kirkwood_dt_time_init(void)
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{
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of_clk_init(NULL);
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clocksource_of_init();
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}
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static void __init kirkwood_dt_init_early(void)
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{
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mvebu_mbus_init("marvell,kirkwood-mbus",
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BRIDGE_WINS_BASE, BRIDGE_WINS_SZ,
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DDR_WINDOW_CPU_BASE, DDR_WINDOW_CPU_SZ);
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}
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static void __init kirkwood_dt_init(void)
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{
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pr_info("Kirkwood: %s, TCLK=%d.\n", kirkwood_id(), kirkwood_tclk);
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/*
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* Disable propagation of mbus errors to the CPU local bus,
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* as this causes mbus errors (which can occur for example
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* for PCI aborts) to throw CPU aborts, which we're not set
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* up to deal with.
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*/
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writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG);
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BUG_ON(mvebu_mbus_dt_init());
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kirkwood_l2_init();
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kirkwood_cpufreq_init();
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/* Setup clocks for legacy devices */
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kirkwood_legacy_clk_init();
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kirkwood_cpuidle_init();
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#ifdef CONFIG_KEXEC
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kexec_reinit = kirkwood_enable_pcie;
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#endif
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if (of_machine_is_compatible("marvell,mv88f6281gtw-ge"))
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mv88f6281gtw_ge_init();
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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}
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static const char * const kirkwood_dt_board_compat[] = {
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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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.map_io = kirkwood_map_io,
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.init_early = kirkwood_dt_init_early,
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.init_time = kirkwood_dt_time_init,
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.init_machine = kirkwood_dt_init,
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.restart = kirkwood_restart,
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.dt_compat = kirkwood_dt_board_compat,
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MACHINE_END
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