summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/armv7/omap-common/clocks-common.c1
-rw-r--r--arch/arm/cpu/armv7/omap-common/reset.c4
-rw-r--r--arch/arm/cpu/armv7/omap5/hwinit.c19
-rw-r--r--arch/arm/cpu/armv7/omap5/prcm-regs.c2
-rw-r--r--arch/arm/include/asm/arch-omap4/sys_proto.h1
-rw-r--r--arch/arm/include/asm/arch-omap5/clocks.h10
-rw-r--r--arch/arm/include/asm/arch-omap5/sys_proto.h10
-rw-r--r--arch/arm/include/asm/omap_common.h1
8 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c
index 2b955c7..99910cd 100644
--- a/arch/arm/cpu/armv7/omap-common/clocks-common.c
+++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c
@@ -716,6 +716,7 @@ void prcm_init(void)
setup_non_essential_dplls();
enable_non_essential_clocks();
#endif
+ setup_warmreset_time();
break;
default:
break;
diff --git a/arch/arm/cpu/armv7/omap-common/reset.c b/arch/arm/cpu/armv7/omap-common/reset.c
index 587bb47..57ea9d9 100644
--- a/arch/arm/cpu/armv7/omap-common/reset.c
+++ b/arch/arm/cpu/armv7/omap-common/reset.c
@@ -39,3 +39,7 @@ u32 __weak warm_reset(void)
{
return (readl(PRM_RSTST) & PRM_RSTST_WARM_RESET_MASK);
}
+
+void __weak setup_warmreset_time(void)
+{
+}
diff --git a/arch/arm/cpu/armv7/omap5/hwinit.c b/arch/arm/cpu/armv7/omap5/hwinit.c
index 2f4b247..d29df78 100644
--- a/arch/arm/cpu/armv7/omap5/hwinit.c
+++ b/arch/arm/cpu/armv7/omap5/hwinit.c
@@ -363,3 +363,22 @@ u32 warm_reset(void)
{
return readl((*prcm)->prm_rstst) & PRM_RSTST_WARM_RESET_MASK;
}
+
+void setup_warmreset_time(void)
+{
+ u32 rst_time, rst_val;
+
+#ifndef CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC
+ rst_time = CONFIG_DEFAULT_OMAP_RESET_TIME_MAX_USEC;
+#else
+ rst_time = CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC;
+#endif
+ rst_time = usec_to_32k(rst_time) << RSTTIME1_SHIFT;
+
+ if (rst_time > RSTTIME1_MASK)
+ rst_time = RSTTIME1_MASK;
+
+ rst_val = readl((*prcm)->prm_rsttime) & ~RSTTIME1_MASK;
+ rst_val |= rst_time;
+ writel(rst_val, (*prcm)->prm_rsttime);
+}
diff --git a/arch/arm/cpu/armv7/omap5/prcm-regs.c b/arch/arm/cpu/armv7/omap5/prcm-regs.c
index b8a61fe..e9f6a32 100644
--- a/arch/arm/cpu/armv7/omap5/prcm-regs.c
+++ b/arch/arm/cpu/armv7/omap5/prcm-regs.c
@@ -729,6 +729,7 @@ struct prcm_regs const omap5_es2_prcm = {
.cm_wkupaon_io_srcomp_clkctrl = 0x4ae07998,
.prm_rstctrl = 0x4ae07c00,
.prm_rstst = 0x4ae07c04,
+ .prm_rsttime = 0x4ae07c08,
.prm_vc_val_bypass = 0x4ae07ca0,
.prm_vc_cfg_i2c_mode = 0x4ae07cb4,
.prm_vc_cfg_i2c_clk = 0x4ae07cb8,
@@ -952,6 +953,7 @@ struct prcm_regs const dra7xx_prcm = {
.cm_wkupaon_scrm_clkctrl = 0x4ae07890,
.prm_rstctrl = 0x4ae07d00,
.prm_rstst = 0x4ae07d04,
+ .prm_rsttime = 0x4ae07d08,
.prm_vc_val_bypass = 0x4ae07da0,
.prm_vc_cfg_i2c_mode = 0x4ae07db4,
.prm_vc_cfg_i2c_clk = 0x4ae07db8,
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
index d5f1868..ac9c1f8 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -58,6 +58,7 @@ void omap_vc_init(u16 speed_khz);
int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data);
u32 warm_reset(void);
void force_emif_self_refresh(void);
+void setup_warmreset_time(void);
/*
* This is used to verify if the configuration header
* was executed by Romcode prior to control of transfer
diff --git a/arch/arm/include/asm/arch-omap5/clocks.h b/arch/arm/include/asm/arch-omap5/clocks.h
index cfde374..68afa76 100644
--- a/arch/arm/include/asm/arch-omap5/clocks.h
+++ b/arch/arm/include/asm/arch-omap5/clocks.h
@@ -190,6 +190,10 @@
#define OPTFCLKEN_SRCOMP_FCLK_SHIFT 8
#define OPTFCLKEN_SRCOMP_FCLK_MASK (1 << 8)
+/* PRM_RSTTIME */
+#define RSTTIME1_SHIFT 0
+#define RSTTIME1_MASK (0x3ff << 0)
+
/* Clock frequencies */
#define OMAP_SYS_CLK_FREQ_38_4_MHZ 38400000
#define OMAP_SYS_CLK_IND_38_4_MHZ 6
@@ -251,4 +255,10 @@
#define DPLL_NO_LOCK 0
#define DPLL_LOCK 1
+/*
+ * MAX value for PRM_RSTTIME[9:0]RSTTIME1 stored is 0x3ff.
+ * 0x3ff is in the no of FUNC_32K_CLK cycles. Converting cycles
+ * into microsec and passing the value.
+ */
+#define CONFIG_DEFAULT_OMAP_RESET_TIME_MAX_USEC 31219
#endif /* _CLOCKS_OMAP5_H_ */
diff --git a/arch/arm/include/asm/arch-omap5/sys_proto.h b/arch/arm/include/asm/arch-omap5/sys_proto.h
index e66ab44..393c8bf 100644
--- a/arch/arm/include/asm/arch-omap5/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap5/sys_proto.h
@@ -64,6 +64,7 @@ u32 warm_reset(void);
void force_emif_self_refresh(void);
void get_ioregs(const struct ctrl_ioregs **regs);
void srcomp_enable(void);
+void setup_warmreset_time(void);
/*
* This is used to verify if the configuration header
@@ -122,4 +123,13 @@ static inline u32 omap_hw_init_context(void)
#endif
}
+static inline u32 div_round_up(u32 num, u32 den)
+{
+ return (num + den - 1)/den;
+}
+
+static inline u32 usec_to_32k(u32 usec)
+{
+ return div_round_up(32768 * usec, 1000000);
+}
#endif
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index 091ddb5..6d377d5 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -316,6 +316,7 @@ struct prcm_regs {
u32 cm_wkupaon_io_srcomp_clkctrl;
u32 prm_rstctrl;
u32 prm_rstst;
+ u32 prm_rsttime;
u32 prm_vc_val_bypass;
u32 prm_vc_cfg_i2c_mode;
u32 prm_vc_cfg_i2c_clk;