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hikey: Disable VBUS_DET interrupt for PMIC 

After disconnect Jumper pin 1-2 in J15 header, the signal VBUS_DET is to
be pulled down to low level. This will assert the interrupt signal in
PMIC and trigger IRQ in GIC; the asserted signal from VBUS_DET is level
triggered and kernel reports the warning for unhooked interrupt handling;
and VBUS_DET stays with low level, this triggers IRQ storm in kernel.

This patch is to disable interrupt for VBUS_DET in PMIC, this can
dismiss the verbose log and IRQ storm after kernel booting.

[   40.835279] irq 57: nobody cared (try booting with the "irqpoll" option)
[   40.842075] CPU: 0 PID: 980 Comm: irq/57-hi655x-p Not tainted 4.4.77-568944-g576a0114dec8-dirty #667
[   40.851303] Hardware name: HiKey Development Board (DT)
[   40.856580] Call trace:
[   40.859060] [<ffffff800808c4cc>] dump_backtrace+0x0/0x1e0
[   40.864516] [<ffffff800808c8ac>] show_stack+0x20/0x28
[   40.869622] [<ffffff80084b9688>] dump_stack+0xa8/0xe0
[   40.874729] [<ffffff800812dd5c>] __report_bad_irq+0x40/0xec
[   40.880360] [<ffffff800812e0bc>] note_interrupt+0x1e4/0x2d8
[   40.885992] [<ffffff800812b11c>] handle_irq_event_percpu+0xd8/0x268
[   40.892324] [<ffffff800812b2f8>] handle_irq_event+0x4c/0x7c
[   40.897955] [<ffffff800812ecbc>] handle_level_irq+0xcc/0x178
[   40.903672] [<ffffff800812a778>] generic_handle_irq+0x34/0x4c
[   40.909481] [<ffffff80085074c8>] pl061_irq_handler+0xa8/0x124
[   40.915286] [<ffffff800812a778>] generic_handle_irq+0x34/0x4c
[   40.921092] [<ffffff800812a820>] __handle_domain_irq+0x90/0xf8
[   40.926985] [<ffffff8008082620>] gic_handle_irq+0x58/0xa8

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
This commit is contained in:
Leo Yan 2017-07-26 14:36:01 +08:00
parent aa965e1583
commit c9e8774cb8
2 changed files with 6 additions and 0 deletions
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5
plat/hisilicon/hikey/hikey_bl1_setup.c
View File

@ -288,6 +288,11 @@ static void hikey_hi6553_init(void)
/* select 32.764KHz */
mmio_write_8(HI6553_CLK19M2_600_586_EN, 0x01);
/* Disable vbus_det interrupts */
data = mmio_read_8(HI6553_IRQ2_MASK);
data = data | 0x3;
mmio_write_8(HI6553_IRQ2_MASK, data);
}
static void init_mmc0_pll(void)

1
plat/hisilicon/hikey/include/hi6553.h
View File

@ -19,6 +19,7 @@
#define DISABLE6_XO_CLK_RF2 (1 << 4)
#define HI6553_VERSION_REG (PMUSSI_BASE + (0x000 << 2))
#define HI6553_IRQ2_MASK (PMUSSI_BASE + (0x008 << 2))
#define HI6553_ENABLE2_LDO1_8 (PMUSSI_BASE + (0x029 << 2))
#define HI6553_DISABLE2_LDO1_8 (PMUSSI_BASE + (0x02a << 2))
#define HI6553_ONOFF_STATUS2_LDO1_8 (PMUSSI_BASE + (0x02b << 2))