diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.2/0062-MIPS-cleanup-reset-code.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.2/0062-MIPS-cleanup-reset-code.patch | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.2/0062-MIPS-cleanup-reset-code.patch b/target/linux/lantiq/patches-3.2/0062-MIPS-cleanup-reset-code.patch new file mode 100644 index 0000000000..e6fae3fe4f --- /dev/null +++ b/target/linux/lantiq/patches-3.2/0062-MIPS-cleanup-reset-code.patch @@ -0,0 +1,103 @@ +From 1748dc7b4974109040d0249ac1fc322c120eb528 Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Fri, 16 Mar 2012 15:49:32 +0100 +Subject: [PATCH 62/70] MIPS: cleanup reset code + +--- + arch/mips/lantiq/xway/reset.c | 59 ++++++++++++++++++++++++++++++++++------ + 1 files changed, 50 insertions(+), 9 deletions(-) + +diff --git a/arch/mips/lantiq/xway/reset.c b/arch/mips/lantiq/xway/reset.c +index ca2212a..8a5dff1 100644 +--- a/arch/mips/lantiq/xway/reset.c ++++ b/arch/mips/lantiq/xway/reset.c +@@ -11,6 +11,7 @@ + #include <linux/ioport.h> + #include <linux/pm.h> + #include <linux/export.h> ++#include <linux/delay.h> + #include <asm/reboot.h> + + #include <lantiq_soc.h> +@@ -20,12 +21,45 @@ + #define ltq_rcu_w32(x, y) ltq_w32((x), ltq_rcu_membase + (y)) + #define ltq_rcu_r32(x) ltq_r32(ltq_rcu_membase + (x)) + +-/* register definitions */ +-#define LTQ_RCU_RST 0x0010 +-#define LTQ_RCU_RST_ALL 0x40000000 +- +-#define LTQ_RCU_RST_STAT 0x0014 +-#define LTQ_RCU_STAT_SHIFT 26 ++/* reset request register */ ++#define RCU_RST_REQ 0x0010 ++/* reset status register */ ++#define RCU_RST_STAT 0x0014 ++ ++/* reset cause */ ++#define RCU_STAT_SHIFT 26 ++/* Global SW Reset */ ++#define RCU_RD_SRST BIT(30) ++/* Memory Controller */ ++#define RCU_RD_MC BIT(14) ++/* PCI core */ ++#define RCU_RD_PCI BIT(13) ++/* Voice DFE/AFE */ ++#define RCU_RD_DFE_AFE BIT(12) ++/* DSL AFE */ ++#define RCU_RD_DSL_AFE BIT(11) ++/* SDIO core */ ++#define RCU_RD_SDIO BIT(10) ++/* DMA core */ ++#define RCU_RD_DMA BIT(9) ++/* PPE core */ ++#define RCU_RD_PPE BIT(8) ++/* ARC/DFE core */ ++#define RCU_RD_ARC_DFE BIT(7) ++/* AHB bus */ ++#define RCU_RD_AHB BIT(6) ++/* Ethernet MAC1 */ ++#define RCU_RD_ENET_MAC1 BIT(5) ++/* USB and Phy core */ ++#define RCU_RD_USB BIT(4) ++/* CPU1 subsystem */ ++#define RCU_RD_CPU1 BIT(3) ++/* FPI bus */ ++#define RCU_RD_FPI BIT(2) ++/* CPU0 subsystem */ ++#define RCU_RD_CPU0 BIT(1) ++/* HW reset via HRST pin */ ++#define RCU_RD_HRST BIT(0) + + static struct resource ltq_rcu_resource = + MEM_RES("rcu", LTQ_RCU_BASE_ADDR, LTQ_RCU_SIZE); +@@ -36,16 +70,23 @@ static void __iomem *ltq_rcu_membase; + /* This function is used by the watchdog driver */ + int ltq_reset_cause(void) + { +- u32 val = ltq_rcu_r32(LTQ_RCU_RST_STAT); +- return val >> LTQ_RCU_STAT_SHIFT; ++ u32 val = ltq_rcu_r32(RCU_RST_STAT); ++ return val >> RCU_STAT_SHIFT; + } + EXPORT_SYMBOL_GPL(ltq_reset_cause); + ++void ltq_reset_once(unsigned int module, ulong usec) ++{ ++ ltq_rcu_w32(ltq_rcu_r32(RCU_RST_REQ) | module, RCU_RST_REQ); ++ udelay(usec); ++ ltq_rcu_w32(ltq_rcu_r32(RCU_RST_REQ) & ~module, RCU_RST_REQ); ++} ++ + static void ltq_machine_restart(char *command) + { + pr_notice("System restart\n"); + local_irq_disable(); +- ltq_rcu_w32(ltq_rcu_r32(LTQ_RCU_RST) | LTQ_RCU_RST_ALL, LTQ_RCU_RST); ++ ltq_rcu_w32(ltq_rcu_r32(RCU_RST_REQ) | RCU_RD_SRST, RCU_RST_REQ); + unreachable(); + } + +-- +1.7.7.1 + |