Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Freescale 83xx USB SOC setup code
|
|
*
|
|
* Copyright (C) 2007 Freescale Semiconductor, Inc.
|
|
* Author: Li Yang
|
|
*/
|
|
|
|
#include <linux/stddef.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/io.h>
|
|
|
|
#include <sysdev/fsl_soc.h>
|
|
|
|
#include "mpc83xx.h"
|
|
|
|
int __init mpc837x_usb_cfg(void)
|
|
{
|
|
void __iomem *immap;
|
|
struct device_node *np = NULL;
|
|
const void *prop;
|
|
int ret = 0;
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "fsl-usb2-dr");
|
|
if (!np || !of_device_is_available(np)) {
|
|
of_node_put(np);
|
|
return -ENODEV;
|
|
}
|
|
prop = of_get_property(np, "phy_type", NULL);
|
|
|
|
if (!prop || (strcmp(prop, "ulpi") && strcmp(prop, "serial"))) {
|
|
pr_warn("837x USB PHY type not supported\n");
|
|
of_node_put(np);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Map IMMR space for pin and clock settings */
|
|
immap = ioremap(get_immrbase(), 0x1000);
|
|
if (!immap) {
|
|
of_node_put(np);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Configure clock */
|
|
clrsetbits_be32(immap + MPC83XX_SCCR_OFFS, MPC837X_SCCR_USB_DRCM_11,
|
|
MPC837X_SCCR_USB_DRCM_11);
|
|
|
|
/* Configure pin mux for ULPI/serial */
|
|
clrsetbits_be32(immap + MPC83XX_SICRL_OFFS, MPC837X_SICRL_USB_MASK,
|
|
MPC837X_SICRL_USB_ULPI);
|
|
|
|
iounmap(immap);
|
|
of_node_put(np);
|
|
return ret;
|
|
}
|