[U-Boot] [PATCH 1/9] sunxi: axp209: Disable interrupts when intializing the axp209

Hans de Goede
2015-01-18T12:23:24Z

We do not use the axp209 interrupt, and at least in my mini-x (which does not
have a power button) the pwr-button pin and the irq pin are soldered together,
so if the axp209 keeps it irq asserted to long it will see a 10s pwr-button
press and hard power off the board, disabling the irqs fixes this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
drivers/power/axp209.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c
index 3b1a6a7..4565398 100644
--- a/drivers/power/axp209.c
+++ b/drivers/power/axp209.c
@@ -16,6 +16,11 @@ enum axp209_reg {
AXP209_DCDC3_VOLTAGE = 0x27,
AXP209_LDO24_VOLTAGE = 0x28,
AXP209_LDO3_VOLTAGE = 0x29,
+ AXP209_IRQ_ENABLE1 = 0x40,
+ AXP209_IRQ_ENABLE2 = 0x41,
+ AXP209_IRQ_ENABLE3 = 0x42,
+ AXP209_IRQ_ENABLE4 = 0x43,
+ AXP209_IRQ_ENABLE5 = 0x44,
AXP209_IRQ_STATUS5 = 0x4c,
AXP209_SHUTDOWN = 0x32,
AXP209_GPIO0_CTRL = 0x90,
@@ -143,7 +148,7 @@ int axp209_set_ldo4(int mvolt)
int axp209_init(void)
{
u8 ver;
- int rc;
+ int i, rc;

rc = axp209_read(AXP209_CHIP_VERSION, &ver);
if (rc)
@@ -155,6 +160,13 @@ int axp209_init(void)
if (ver != 0x1)
return -1;

+ /* Mask all interrupts */
+ for (i = AXP209_IRQ_ENABLE1; i <= AXP209_IRQ_ENABLE5; i++) {
+ rc = axp209_write(i, 0);
+ if (rc)
+ return rc;
+ }
+
return 0;
}

--
2.1.0