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Commit 406c8f6c authored by Chris Brand's avatar Chris Brand Committed by Florian Fainelli
Browse files

ARM: bcm21664: Remove reset code 



The kona reset driver now provides this functionality.

Signed-off-by: default avatarChris Brand <chris.brand@broadcom.com>
Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
parent 1a695a90

arch/arm/mach-bcm/board_bcm21664.c

+0 −42
Original line number Diff line number Diff line
@@ -11,53 +11,12 @@ 
 * GNU General Public License for more details.

 */



#include <linux/of_address.h>

#include <linux/of_platform.h>

#include <linux/io.h>



#include <asm/mach/arch.h>



#include "kona_l2_cache.h"



#define RSTMGR_DT_STRING		"brcm,bcm21664-resetmgr"



#define RSTMGR_REG_WR_ACCESS_OFFSET	0

#define RSTMGR_REG_CHIP_SOFT_RST_OFFSET	4



#define RSTMGR_WR_PASSWORD		0xa5a5

#define RSTMGR_WR_PASSWORD_SHIFT	8

#define RSTMGR_WR_ACCESS_ENABLE		1



static void bcm21664_restart(enum reboot_mode mode, const char *cmd)

{

	void __iomem *base;

	struct device_node *resetmgr;



	resetmgr = of_find_compatible_node(NULL, NULL, RSTMGR_DT_STRING);

	if (!resetmgr) {

		pr_emerg("Couldn't find " RSTMGR_DT_STRING "\n");

		return;

	}

	base = of_iomap(resetmgr, 0);

	if (!base) {

		pr_emerg("Couldn't map " RSTMGR_DT_STRING "\n");

		return;

	}



	/*

	 * A soft reset is triggered by writing a 0 to bit 0 of the soft reset

	 * register. To write to that register we must first write the password

	 * and the enable bit in the write access enable register.

	 */

	writel((RSTMGR_WR_PASSWORD << RSTMGR_WR_PASSWORD_SHIFT) |

		RSTMGR_WR_ACCESS_ENABLE,

		base + RSTMGR_REG_WR_ACCESS_OFFSET);

	writel(0, base + RSTMGR_REG_CHIP_SOFT_RST_OFFSET);



	/* Wait for reset */

	while (1);

}



static void __init bcm21664_init(void)

{

	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
@@ -71,6 +30,5 @@ static const char * const bcm21664_dt_compat[] = { 


DT_MACHINE_START(BCM21664_DT, "BCM21664 Broadcom Application Processor")

	.init_machine = bcm21664_init,

	.restart = bcm21664_restart,

	.dt_compat = bcm21664_dt_compat,

MACHINE_END