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Commit 15753b65 authored by John Crispin's avatar John Crispin
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MIPS: lantiq: fix bootselect bits on XRX200 SoC 



The XRX200 SoC family has a different register layout for reading the boot
selection bits.

Signed-off-by: default avatarJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4519
parent a15d129a

arch/mips/lantiq/xway/reset.c

+15 −7
Original line number Diff line number Diff line
@@ -34,11 +34,12 @@ 
/* reset cause */

#define RCU_STAT_SHIFT		26

/* boot selection */

#define RCU_BOOT_SEL_SHIFT	26

#define RCU_BOOT_SEL_MASK	0x7

#define RCU_BOOT_SEL(x)		((x >> 18) & 0x7)

#define RCU_BOOT_SEL_XRX200(x)	(((x >> 17) & 0xf) | ((x >> 8) & 0x10))



/* remapped base addr of the reset control unit */

static void __iomem *ltq_rcu_membase;

static struct device_node *ltq_rcu_np;



/* This function is used by the watchdog driver */

int ltq_reset_cause(void)
@@ -52,7 +53,11 @@ EXPORT_SYMBOL_GPL(ltq_reset_cause); 
unsigned char ltq_boot_select(void)

{

	u32 val = ltq_rcu_r32(RCU_RST_STAT);

	return (val >> RCU_BOOT_SEL_SHIFT) & RCU_BOOT_SEL_MASK;



	if (of_device_is_compatible(ltq_rcu_np, "lantiq,rcu-xrx200"))

		return RCU_BOOT_SEL_XRX200(val);



	return RCU_BOOT_SEL(val);

}



/* reset a io domain for u micro seconds */
@@ -85,14 +90,17 @@ static void ltq_machine_power_off(void) 
static int __init mips_reboot_setup(void)

{

	struct resource res;

	struct device_node *np =

		of_find_compatible_node(NULL, NULL, "lantiq,rcu-xway");



	ltq_rcu_np = of_find_compatible_node(NULL, NULL, "lantiq,rcu-xway");

	if (!ltq_rcu_np)

		ltq_rcu_np = of_find_compatible_node(NULL, NULL,

							"lantiq,rcu-xrx200");



	/* check if all the reset register range is available */

	if (!np)

	if (!ltq_rcu_np)

		panic("Failed to load reset resources from devicetree");



	if (of_address_to_resource(np, 0, &res))

	if (of_address_to_resource(ltq_rcu_np, 0, &res))

		panic("Failed to get rcu memory range");



	if (request_mem_region(res.start, resource_size(&res), res.name) < 0)