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usb.c contains three independent parts with no common part. Split it. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> [mpe: Drop usb.o from Makefile to fix build] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/75712b54bf9cb85ab10e47cd2772cd2a098ca895.1692199324.git.christophe.leroy@csgroup.eu
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Freescale 83xx USB SOC setup code
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*
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* Copyright (C) 2007 Freescale Semiconductor, Inc.
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* Author: Li Yang
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/io.h>
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#include <sysdev/fsl_soc.h>
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#include "mpc83xx.h"
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int __init mpc837x_usb_cfg(void)
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{
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void __iomem *immap;
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struct device_node *np = NULL;
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const void *prop;
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int ret = 0;
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np = of_find_compatible_node(NULL, NULL, "fsl-usb2-dr");
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if (!np || !of_device_is_available(np)) {
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of_node_put(np);
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return -ENODEV;
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}
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prop = of_get_property(np, "phy_type", NULL);
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if (!prop || (strcmp(prop, "ulpi") && strcmp(prop, "serial"))) {
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pr_warn("837x USB PHY type not supported\n");
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of_node_put(np);
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return -EINVAL;
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}
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/* Map IMMR space for pin and clock settings */
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immap = ioremap(get_immrbase(), 0x1000);
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if (!immap) {
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of_node_put(np);
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return -ENOMEM;
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}
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/* Configure clock */
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clrsetbits_be32(immap + MPC83XX_SCCR_OFFS, MPC837X_SCCR_USB_DRCM_11,
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MPC837X_SCCR_USB_DRCM_11);
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/* Configure pin mux for ULPI/serial */
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clrsetbits_be32(immap + MPC83XX_SICRL_OFFS, MPC837X_SICRL_USB_MASK,
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MPC837X_SICRL_USB_ULPI);
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iounmap(immap);
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of_node_put(np);
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return ret;
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}
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