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5951b62ba4
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
90 lines
2.4 KiB
C
90 lines
2.4 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 mpc834x_usb_cfg(void)
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{
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unsigned long sccr, sicrl, sicrh;
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void __iomem *immap;
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struct device_node *np = NULL;
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int port0_is_dr = 0, port1_is_dr = 0;
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const void *prop, *dr_mode;
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immap = ioremap(get_immrbase(), 0x1000);
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if (!immap)
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return -ENOMEM;
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/* Read registers */
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/* Note: DR and MPH must use the same clock setting in SCCR */
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sccr = in_be32(immap + MPC83XX_SCCR_OFFS) & ~MPC83XX_SCCR_USB_MASK;
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sicrl = in_be32(immap + MPC83XX_SICRL_OFFS) & ~MPC834X_SICRL_USB_MASK;
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sicrh = in_be32(immap + MPC83XX_SICRH_OFFS) & ~MPC834X_SICRH_USB_UTMI;
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np = of_find_compatible_node(NULL, NULL, "fsl-usb2-dr");
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if (np) {
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sccr |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */
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prop = of_get_property(np, "phy_type", NULL);
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port1_is_dr = 1;
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if (prop &&
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(!strcmp(prop, "utmi") || !strcmp(prop, "utmi_wide"))) {
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sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1;
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sicrh |= MPC834X_SICRH_USB_UTMI;
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port0_is_dr = 1;
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} else if (prop && !strcmp(prop, "serial")) {
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dr_mode = of_get_property(np, "dr_mode", NULL);
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if (dr_mode && !strcmp(dr_mode, "otg")) {
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sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1;
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port0_is_dr = 1;
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} else {
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sicrl |= MPC834X_SICRL_USB1;
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}
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} else if (prop && !strcmp(prop, "ulpi")) {
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sicrl |= MPC834X_SICRL_USB1;
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} else {
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pr_warn("834x USB PHY type not supported\n");
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}
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of_node_put(np);
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}
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np = of_find_compatible_node(NULL, NULL, "fsl-usb2-mph");
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if (np) {
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sccr |= MPC83XX_SCCR_USB_MPHCM_11; /* 1:3 */
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prop = of_get_property(np, "port0", NULL);
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if (prop) {
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if (port0_is_dr)
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pr_warn("834x USB port0 can't be used by both DR and MPH!\n");
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sicrl &= ~MPC834X_SICRL_USB0;
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}
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prop = of_get_property(np, "port1", NULL);
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if (prop) {
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if (port1_is_dr)
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pr_warn("834x USB port1 can't be used by both DR and MPH!\n");
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sicrl &= ~MPC834X_SICRL_USB1;
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}
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of_node_put(np);
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}
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/* Write back */
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out_be32(immap + MPC83XX_SCCR_OFFS, sccr);
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out_be32(immap + MPC83XX_SICRL_OFFS, sicrl);
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out_be32(immap + MPC83XX_SICRH_OFFS, sicrh);
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iounmap(immap);
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return 0;
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}
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