89f3729642
Actually, the support is already there, but it requires newer U-Boots (to fill-in clock-frequency, and setup pin multiplexing). Though, it appears that on RDB boards USBB pins aren't multiplexed between USB and eSDHC (unlike MDS boards, where USB and eSDHC share pctl and pwrfault pins). So, for RDB boards we can safely setup pinmux and manually fill-in clock-frequency, thus making eSDHC work even with older u-boots. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
127 lines
3.0 KiB
C
127 lines
3.0 KiB
C
/*
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* arch/powerpc/platforms/83xx/mpc837x_rdb.c
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*
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* Copyright (C) 2007 Freescale Semicondutor, Inc. All rights reserved.
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*
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* MPC837x RDB board specific routines
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/pci.h>
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#include <linux/of_platform.h>
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#include <asm/time.h>
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#include <asm/ipic.h>
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#include <asm/udbg.h>
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#include <sysdev/fsl_soc.h>
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#include <sysdev/fsl_pci.h>
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#include "mpc83xx.h"
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static void mpc837x_rdb_sd_cfg(void)
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{
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void __iomem *im;
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im = ioremap(get_immrbase(), 0x1000);
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if (!im) {
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WARN_ON(1);
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return;
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}
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/*
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* On RDB boards (in contrast to MDS) USBB pins are used for SD only,
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* so we can safely mux them away from the USB block.
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*/
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clrsetbits_be32(im + MPC83XX_SICRL_OFFS, MPC837X_SICRL_USBB_MASK,
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MPC837X_SICRL_SD);
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clrsetbits_be32(im + MPC83XX_SICRH_OFFS, MPC837X_SICRH_SPI_MASK,
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MPC837X_SICRH_SD);
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iounmap(im);
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}
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/* ************************************************************************
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*
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* Setup the architecture
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*
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*/
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static void __init mpc837x_rdb_setup_arch(void)
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{
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#ifdef CONFIG_PCI
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struct device_node *np;
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#endif
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if (ppc_md.progress)
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ppc_md.progress("mpc837x_rdb_setup_arch()", 0);
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#ifdef CONFIG_PCI
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for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
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mpc83xx_add_bridge(np);
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for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
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mpc83xx_add_bridge(np);
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#endif
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mpc837x_usb_cfg();
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mpc837x_rdb_sd_cfg();
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}
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static struct of_device_id mpc837x_ids[] = {
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{ .type = "soc", },
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{ .compatible = "soc", },
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{ .compatible = "simple-bus", },
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{ .compatible = "gianfar", },
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{},
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};
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static int __init mpc837x_declare_of_platform_devices(void)
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{
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/* Publish of_device */
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of_platform_bus_probe(NULL, mpc837x_ids, NULL);
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return 0;
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}
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machine_device_initcall(mpc837x_rdb, mpc837x_declare_of_platform_devices);
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static void __init mpc837x_rdb_init_IRQ(void)
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{
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struct device_node *np;
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np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
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if (!np)
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return;
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ipic_init(np, 0);
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/* Initialize the default interrupt mapping priorities,
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* in case the boot rom changed something on us.
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*/
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ipic_set_default_priority();
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}
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/*
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* Called very early, MMU is off, device-tree isn't unflattened
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*/
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static int __init mpc837x_rdb_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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return of_flat_dt_is_compatible(root, "fsl,mpc8377rdb") ||
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of_flat_dt_is_compatible(root, "fsl,mpc8378rdb") ||
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of_flat_dt_is_compatible(root, "fsl,mpc8379rdb") ||
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of_flat_dt_is_compatible(root, "fsl,mpc8377wlan");
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}
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define_machine(mpc837x_rdb) {
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.name = "MPC837x RDB/WLAN",
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.probe = mpc837x_rdb_probe,
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.setup_arch = mpc837x_rdb_setup_arch,
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.init_IRQ = mpc837x_rdb_init_IRQ,
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.get_irq = ipic_get_irq,
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.restart = mpc83xx_restart,
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.time_init = mpc83xx_time_init,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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};
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