diff options
Diffstat (limited to 'arch/arm/mach-kirkwood/board-dt.c')
| -rw-r--r-- | arch/arm/mach-kirkwood/board-dt.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c new file mode 100644 index 00000000..e9647b80 --- /dev/null +++ b/arch/arm/mach-kirkwood/board-dt.c @@ -0,0 +1,201 @@ +/* + * Copyright 2012 (C), Jason Cooper <jason@lakedaemon.net> + * + * arch/arm/mach-kirkwood/board-dt.c + * + * Flattened Device Tree board initialization + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/clk-provider.h> +#include <linux/clk/mvebu.h> +#include <linux/kexec.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <mach/bridge-regs.h> +#include <linux/platform_data/usb-ehci-orion.h> +#include <plat/irq.h> +#include <plat/common.h> +#include "common.h" + +static struct of_device_id kirkwood_dt_match_table[] __initdata = { + { .compatible = "simple-bus", }, + { } +}; + +/* + * There are still devices that doesn't know about DT yet. Get clock + * gates here and add a clock lookup alias, so that old platform + * devices still work. +*/ + +static void __init kirkwood_legacy_clk_init(void) +{ + + struct device_node *np = of_find_compatible_node( + NULL, NULL, "marvell,kirkwood-gating-clock"); + struct of_phandle_args clkspec; + struct clk *clk; + + clkspec.np = np; + clkspec.args_count = 1; + + clkspec.args[0] = CGC_BIT_PEX0; + orion_clkdev_add("0", "pcie", + of_clk_get_from_provider(&clkspec)); + + clkspec.args[0] = CGC_BIT_PEX1; + orion_clkdev_add("1", "pcie", + of_clk_get_from_provider(&clkspec)); + + clkspec.args[0] = CGC_BIT_SDIO; + orion_clkdev_add(NULL, "mvsdio", + of_clk_get_from_provider(&clkspec)); + + /* + * The ethernet interfaces forget the MAC address assigned by + * u-boot if the clocks are turned off. Until proper DT support + * is available we always enable them for now. + */ + clkspec.args[0] = CGC_BIT_GE0; + clk = of_clk_get_from_provider(&clkspec); + orion_clkdev_add(NULL, "mv643xx_eth_port.0", clk); + clk_prepare_enable(clk); + + clkspec.args[0] = CGC_BIT_GE1; + clk = of_clk_get_from_provider(&clkspec); + orion_clkdev_add(NULL, "mv643xx_eth_port.1", clk); + clk_prepare_enable(clk); +} + +static void __init kirkwood_of_clk_init(void) +{ + mvebu_clocks_init(); + kirkwood_legacy_clk_init(); +} + +static void __init kirkwood_dt_init(void) +{ + pr_info("Kirkwood: %s, TCLK=%d.\n", kirkwood_id(), kirkwood_tclk); + + /* + * Disable propagation of mbus errors to the CPU local bus, + * as this causes mbus errors (which can occur for example + * for PCI aborts) to throw CPU aborts, which we're not set + * up to deal with. + */ + writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG); + + kirkwood_setup_wins(); + + kirkwood_l2_init(); + + /* Setup root of clk tree */ + kirkwood_of_clk_init(); + + kirkwood_cpuidle_init(); + +#ifdef CONFIG_KEXEC + kexec_reinit = kirkwood_enable_pcie; +#endif + + if (of_machine_is_compatible("globalscale,dreamplug")) + dreamplug_init(); + + if (of_machine_is_compatible("globalscale,guruplug")) + guruplug_dt_init(); + + if (of_machine_is_compatible("dlink,dns-kirkwood")) + dnskw_init(); + + if (of_machine_is_compatible("iom,iconnect")) + iconnect_init(); + + if (of_machine_is_compatible("raidsonic,ib-nas62x0")) + ib62x0_init(); + + if (of_machine_is_compatible("qnap,ts219")) + qnap_dt_ts219_init(); + + if (of_machine_is_compatible("seagate,dockstar")) + dockstar_dt_init(); + + if (of_machine_is_compatible("seagate,goflexnet")) + goflexnet_init(); + + if (of_machine_is_compatible("buffalo,lsxl")) + lsxl_init(); + + if (of_machine_is_compatible("iom,ix2-200")) + iomega_ix2_200_init(); + + if (of_machine_is_compatible("keymile,km_kirkwood")) + km_kirkwood_init(); + + if (of_machine_is_compatible("lacie,cloudbox") || + of_machine_is_compatible("lacie,inetspace_v2") || + of_machine_is_compatible("lacie,netspace_lite_v2") || + of_machine_is_compatible("lacie,netspace_max_v2") || + of_machine_is_compatible("lacie,netspace_mini_v2") || + of_machine_is_compatible("lacie,netspace_v2")) + ns2_init(); + + if (of_machine_is_compatible("mpl,cec4")) + mplcec4_init(); + + if (of_machine_is_compatible("netgear,readynas-duo-v2")) + netgear_readynas_init(); + + if (of_machine_is_compatible("plathome,openblocks-a6")) + openblocks_a6_init(); + + if (of_machine_is_compatible("usi,topkick")) + usi_topkick_init(); + + of_platform_populate(NULL, kirkwood_dt_match_table, NULL, NULL); +} + +static const char * const kirkwood_dt_board_compat[] = { + "globalscale,dreamplug", + "globalscale,guruplug", + "dlink,dns-320", + "dlink,dns-325", + "iom,iconnect", + "raidsonic,ib-nas62x0", + "qnap,ts219", + "seagate,dockstar", + "seagate,goflexnet", + "buffalo,lsxl", + "iom,ix2-200", + "keymile,km_kirkwood", + "lacie,cloudbox", + "lacie,inetspace_v2", + "lacie,netspace_lite_v2", + "lacie,netspace_max_v2", + "lacie,netspace_mini_v2", + "lacie,netspace_v2", + "mpl,cec4", + "netgear,readynas-duo-v2", + "plathome,openblocks-a6", + "usi,topkick", + "zyxel,nsa310", + NULL +}; + +DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)") + /* Maintainer: Jason Cooper <jason@lakedaemon.net> */ + .map_io = kirkwood_map_io, + .init_early = kirkwood_init_early, + .init_irq = orion_dt_init_irq, + .init_time = kirkwood_timer_init, + .init_machine = kirkwood_dt_init, + .restart = kirkwood_restart, + .dt_compat = kirkwood_dt_board_compat, +MACHINE_END |