When rebooting an OMAP3530 at 125 MHz, the reboot hangs.
This patch adds a generic power save script, which resets the TWL4030 when a
warm reset occures. This way the OMAP3530 does not hang on reboot.
Signed-off-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>
---
arch/arm/mach-omap2/board-igep0020.c | 36 ++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c
index 48d5e41..9ba1c4b 100644
--- a/arch/arm/mach-omap2/board-igep0020.c
+++ b/arch/arm/mach-omap2/board-igep0020.c
@@ -487,11 +487,47 @@ static struct twl4030_keypad_data igep2_keypad_pdata = {
.rep = 1,
};
+static struct twl4030_ins wrst_seq[] __initdata = {
+ {MSG_SINGULAR(DEV_GRP_NULL, 0x1b, RES_STATE_OFF), 2},
+ {MSG_SINGULAR(DEV_GRP_P1, 0xf, RES_STATE_WRST), 15},
+ {MSG_SINGULAR(DEV_GRP_P1, 0x10, RES_STATE_WRST), 15},
+ {MSG_SINGULAR(DEV_GRP_P1, 0x7, RES_STATE_WRST), 0x60},
+ {MSG_SINGULAR(DEV_GRP_P1, 0x19, RES_STATE_ACTIVE), 2},
+ {MSG_SINGULAR(DEV_GRP_NULL, 0x1b, RES_STATE_ACTIVE), 2},
+};
+
+static struct twl4030_script wrst_script __initdata = {
+ .script = wrst_seq,
+ .size = ARRAY_SIZE(wrst_seq),
+ .flags = TWL4030_WRST_SCRIPT,
+};
+
+static struct twl4030_script *twl4030_scripts[] __initdata = {
+ &wrst_script,
+};
+
+static struct twl4030_resconfig twl4030_rconfig[] = {
+ { .resource = RES_HFCLKOUT, .devgroup = DEV_GRP_P3, .type = -1,
+ .type2 = -1 },
+ { .resource = RES_VDD1, .devgroup = DEV_GRP_P1, .type = -1,
+ .type2 = -1 },
+ { .resource = RES_VDD2, .devgroup = DEV_GRP_P1, .type = -1,
+ .type2 = -1 },
+ { 0, 0},
+};
+
+static struct twl4030_power_data igep_twl4030_power_data = {
+ .scripts = twl4030_scripts,
+ .num = ARRAY_SIZE(twl4030_scripts),
+ .resource_config = twl4030_rconfig,
+};
+
static struct twl4030_platform_data igep_twldata = {
/* platform_data for children goes here */
.gpio = &igep_twl4030_gpio_pdata,
.vmmc1 = &igep_vmmc1,
.vio = &igep_vio,
+ .power = &igep_twl4030_power_data,
};
static struct i2c_board_info __initdata igep2_i2c3_boardinfo[] = {
--
1.7.9.5
--
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