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Subject[PATCH V2 1/4] gpio: sprd: In the sleep state, the eic debounce clk must be forced open
Date
In the sleep state, Eic debounce has no clock and the clk of
debounce needs to be forced open, so that eic can wake up normally.

Fixes: 2788938b7946 ("gpio: eic-sprd: Make the irqchip immutable")

Signed-off-by: Wenhua Lin <Wenhua.Lin@unisoc.com>
---
drivers/gpio/gpio-eic-sprd.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/gpio/gpio-eic-sprd.c b/drivers/gpio/gpio-eic-sprd.c
index 84352a6f4973..bfa8a4c7515a 100644
--- a/drivers/gpio/gpio-eic-sprd.c
+++ b/drivers/gpio/gpio-eic-sprd.c
@@ -23,6 +23,7 @@
#define SPRD_EIC_DBNC_IC 0x24
#define SPRD_EIC_DBNC_TRIG 0x28
#define SPRD_EIC_DBNC_CTRL0 0x40
+#define SPRD_EIC_DBNC_FORCE_CLK 0x8000

#define SPRD_EIC_LATCH_INTEN 0x0
#define SPRD_EIC_LATCH_INTRAW 0x4
@@ -214,6 +215,7 @@ static int sprd_eic_set_debounce(struct gpio_chip *chip, unsigned int offset,
u32 value = readl_relaxed(base + reg) & ~SPRD_EIC_DBNC_MASK;

value |= (debounce / 1000) & SPRD_EIC_DBNC_MASK;
+ value |= SPRD_EIC_DBNC_FORCE_CLK;
writel_relaxed(value, base + reg);

return 0;
--
2.17.1
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