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Commit 2f4d91e3 authored by Tony Lindgren's avatar Tony Lindgren
Browse files

Merge tag 'for_3.8-pm-omap4-core-ret' of...

Merge tag 'for_3.8-pm-omap4-core-ret' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into omap-for-v3.8/pm-part2

Add support for full-chip retention in suspend for OMAP4 SoCs.
parents 3d70f8c6 4fd7a412
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+32 −0
Original line number Diff line number Diff line
@@ -33,6 +33,38 @@
#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 */
	__raw_writel(PHY_PD, ctrl_base + CONTROL_DEV_CONF);

	iounmap(ctrl_base);

	return 0;
}
early_initcall(omap4430_phy_power_down);

void am35x_musb_reset(void)
{
	u32	regval;
+0 −7
Original line number Diff line number Diff line
@@ -100,13 +100,6 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
	if (!strncmp(pwrdm->name, "cpu", 3))
		return 0;

	/*
	 * FIXME: Remove this check when core retention is supported
	 * Only MPUSS power domain is added in the list.
	 */
	if (strcmp(pwrdm->name, "mpu_pwrdm"))
		return 0;

	pwrst = kmalloc(sizeof(struct power_state), GFP_ATOMIC);
	if (!pwrst)
		return -ENOMEM;