83f73168a8
Some musb related code is no longer in use after commit 4d62dbda85
("ARM: OMAP3: Remove legacy support for am3517-evm") and can be removed.
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* This file configures the internal USB PHY in OMAP4430. Used
|
|
* with TWL6030 transceiver and MUSB on OMAP4430.
|
|
*
|
|
* Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com
|
|
* Author: Hema HK <hemahk@ti.com>
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/io.h>
|
|
#include <linux/err.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/musb.h>
|
|
|
|
#include "soc.h"
|
|
#include "control.h"
|
|
|
|
#define CONTROL_DEV_CONF 0x300
|
|
#define PHY_PD 0x1
|
|
|
|
/**
|
|
* omap4430_phy_power_down: disable MUSB PHY during early init
|
|
*
|
|
* OMAP4 MUSB PHY module is enabled by default on reset, but this will
|
|
* prevent core retention if not disabled by SW. USB driver will
|
|
* later on enable this, once and if the driver needs it.
|
|
*/
|
|
static int __init omap4430_phy_power_down(void)
|
|
{
|
|
void __iomem *ctrl_base;
|
|
|
|
if (!cpu_is_omap44xx())
|
|
return 0;
|
|
|
|
ctrl_base = ioremap(OMAP443X_SCM_BASE, SZ_1K);
|
|
if (!ctrl_base) {
|
|
pr_err("control module ioremap failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Power down the phy */
|
|
writel_relaxed(PHY_PD, ctrl_base + CONTROL_DEV_CONF);
|
|
|
|
iounmap(ctrl_base);
|
|
|
|
return 0;
|
|
}
|
|
omap_early_initcall(omap4430_phy_power_down);
|