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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/powerpc/platforms/44x/canyonlands.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/powerpc/platforms/44x/canyonlands.c')
-rw-r--r-- | kernel/arch/powerpc/platforms/44x/canyonlands.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/platforms/44x/canyonlands.c b/kernel/arch/powerpc/platforms/44x/canyonlands.c new file mode 100644 index 000000000..22ca5430c --- /dev/null +++ b/kernel/arch/powerpc/platforms/44x/canyonlands.c @@ -0,0 +1,134 @@ +/* + * This contain platform specific code for APM PPC460EX based Canyonlands + * board. + * + * Copyright (c) 2010, Applied Micro Circuits Corporation + * Author: Rupjyoti Sarmah <rsarmah@apm.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <asm/pci-bridge.h> +#include <asm/ppc4xx.h> +#include <asm/udbg.h> +#include <asm/uic.h> +#include <linux/of_platform.h> +#include <linux/delay.h> +#include "44x.h" + +#define BCSR_USB_EN 0x11 + +static const struct of_device_id ppc460ex_of_bus[] __initconst = { + { .compatible = "ibm,plb4", }, + { .compatible = "ibm,opb", }, + { .compatible = "ibm,ebc", }, + { .compatible = "simple-bus", }, + {}, +}; + +static int __init ppc460ex_device_probe(void) +{ + of_platform_bus_probe(NULL, ppc460ex_of_bus, NULL); + + return 0; +} +machine_device_initcall(canyonlands, ppc460ex_device_probe); + +/* Using this code only for the Canyonlands board. */ + +static int __init ppc460ex_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + if (of_flat_dt_is_compatible(root, "amcc,canyonlands")) { + pci_set_flags(PCI_REASSIGN_ALL_RSRC); + return 1; + } + return 0; +} + +/* USB PHY fixup code on Canyonlands kit. */ + +static int __init ppc460ex_canyonlands_fixup(void) +{ + u8 __iomem *bcsr ; + void __iomem *vaddr; + struct device_node *np; + int ret = 0; + + np = of_find_compatible_node(NULL, NULL, "amcc,ppc460ex-bcsr"); + if (!np) { + printk(KERN_ERR "failed did not find amcc, ppc460ex bcsr node\n"); + return -ENODEV; + } + + bcsr = of_iomap(np, 0); + of_node_put(np); + + if (!bcsr) { + printk(KERN_CRIT "Could not remap bcsr\n"); + ret = -ENODEV; + goto err_bcsr; + } + + np = of_find_compatible_node(NULL, NULL, "ibm,ppc4xx-gpio"); + if (!np) { + printk(KERN_ERR "failed did not find ibm,ppc4xx-gpio node\n"); + return -ENODEV; + } + + vaddr = of_iomap(np, 0); + of_node_put(np); + + if (!vaddr) { + printk(KERN_CRIT "Could not get gpio node address\n"); + ret = -ENODEV; + goto err_gpio; + } + /* Disable USB, through the BCSR7 bits */ + setbits8(&bcsr[7], BCSR_USB_EN); + + /* Wait for a while after reset */ + msleep(100); + + /* Enable USB here */ + clrbits8(&bcsr[7], BCSR_USB_EN); + + /* + * Configure multiplexed gpio16 and gpio19 as alternate1 output + * source after USB reset. In this configuration gpio16 will be + * USB2HStop and gpio19 will be USB2DStop. For more details refer to + * table 34-7 of PPC460EX user manual. + */ + setbits32((vaddr + GPIO0_OSRH), 0x42000000); + setbits32((vaddr + GPIO0_TSRH), 0x42000000); +err_gpio: + iounmap(vaddr); +err_bcsr: + iounmap(bcsr); + return ret; +} +machine_device_initcall(canyonlands, ppc460ex_canyonlands_fixup); +define_machine(canyonlands) { + .name = "Canyonlands", + .probe = ppc460ex_probe, + .progress = udbg_progress, + .init_IRQ = uic_init_tree, + .get_irq = uic_get_irq, + .restart = ppc4xx_reset_system, + .calibrate_decr = generic_calibrate_decr, +}; |