diff options
Diffstat (limited to '')
-rw-r--r-- | arch/powerpc/platforms/83xx/mpc837x_mds.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/83xx/mpc837x_mds.c b/arch/powerpc/platforms/83xx/mpc837x_mds.c new file mode 100644 index 000000000..fa3538803 --- /dev/null +++ b/arch/powerpc/platforms/83xx/mpc837x_mds.c @@ -0,0 +1,103 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * arch/powerpc/platforms/83xx/mpc837x_mds.c + * + * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. + * + * MPC837x MDS board specific routines + */ + +#include <linux/pci.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> + +#include <asm/time.h> +#include <asm/ipic.h> +#include <asm/udbg.h> +#include <sysdev/fsl_pci.h> + +#include "mpc83xx.h" + +#define BCSR12_USB_SER_MASK 0x8a +#define BCSR12_USB_SER_PIN 0x80 +#define BCSR12_USB_SER_DEVICE 0x02 + +static int __init mpc837xmds_usb_cfg(void) +{ + struct device_node *np; + const void *phy_type, *mode; + void __iomem *bcsr_regs = NULL; + u8 bcsr12; + int ret; + + ret = mpc837x_usb_cfg(); + if (ret) + return ret; + /* Map BCSR area */ + np = of_find_compatible_node(NULL, NULL, "fsl,mpc837xmds-bcsr"); + if (np) { + bcsr_regs = of_iomap(np, 0); + of_node_put(np); + } + if (!bcsr_regs) + return -1; + + np = of_find_node_by_name(NULL, "usb"); + if (!np) { + ret = -ENODEV; + goto out; + } + phy_type = of_get_property(np, "phy_type", NULL); + if (phy_type && !strcmp(phy_type, "ulpi")) { + clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN); + } else if (phy_type && !strcmp(phy_type, "serial")) { + mode = of_get_property(np, "dr_mode", NULL); + bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK; + bcsr12 |= BCSR12_USB_SER_PIN; + if (mode && !strcmp(mode, "peripheral")) + bcsr12 |= BCSR12_USB_SER_DEVICE; + out_8(bcsr_regs + 12, bcsr12); + } else { + printk(KERN_ERR "USB DR: unsupported PHY\n"); + } + + of_node_put(np); +out: + iounmap(bcsr_regs); + return ret; +} + +/* ************************************************************************ + * + * Setup the architecture + * + */ +static void __init mpc837x_mds_setup_arch(void) +{ + mpc83xx_setup_arch(); + mpc837xmds_usb_cfg(); +} + +machine_device_initcall(mpc837x_mds, mpc83xx_declare_of_platform_devices); + +/* + * Called very early, MMU is off, device-tree isn't unflattened + */ +static int __init mpc837x_mds_probe(void) +{ + return of_machine_is_compatible("fsl,mpc837xmds"); +} + +define_machine(mpc837x_mds) { + .name = "MPC837x MDS", + .probe = mpc837x_mds_probe, + .setup_arch = mpc837x_mds_setup_arch, + .discover_phbs = mpc83xx_setup_pci, + .init_IRQ = mpc83xx_ipic_init_IRQ, + .get_irq = ipic_get_irq, + .restart = mpc83xx_restart, + .time_init = mpc83xx_time_init, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; |