| Message ID | 20240104024244.12163-2-Wenhua.Lin@unisoc.com |
|---|---|
| State | New |
| Headers | show |
| Series | gpio: eic-sprd: Modification of UNISOC Platform EIC Driver | expand |
On Thu, Jan 4, 2024 at 4:43 AM Wenhua Lin <Wenhua.Lin@unisoc.com> wrote: > > The eic debounce does not have a clock of rtc_1k in the sleep state, > but the eic debounce will be used to wake up the system, therefore the > clock of rtc_1k needs to be kept open. ... > +#define SPRD_EIC_DBNC_FORCE_CLK 0x8000 BIT(15) ?
On Thu, Jan 4, 2024 at 9:00 PM Andy Shevchenko <andy.shevchenko@gmail.com> wrote: > > On Thu, Jan 4, 2024 at 4:43 AM Wenhua Lin <Wenhua.Lin@unisoc.com> wrote: > > > > The eic debounce does not have a clock of rtc_1k in the sleep state, > > but the eic debounce will be used to wake up the system, therefore the > > clock of rtc_1k needs to be kept open. > > ... > > > +#define SPRD_EIC_DBNC_FORCE_CLK 0x8000 > > BIT(15) ? > Yes, writing 1 to bit15 of the register can ensure that the clock of rtc_1k remains normally on. > -- > With Best Regards, > Andy Shevchenko
On Fri, 5 Jan 2024 at 10:11, wenhua lin <wenhua.lin1994@gmail.com> wrote: > > On Thu, Jan 4, 2024 at 9:00 PM Andy Shevchenko > <andy.shevchenko@gmail.com> wrote: > > > > On Thu, Jan 4, 2024 at 4:43 AM Wenhua Lin <Wenhua.Lin@unisoc.com> wrote: > > > > > > The eic debounce does not have a clock of rtc_1k in the sleep state, > > > but the eic debounce will be used to wake up the system, therefore the > > > clock of rtc_1k needs to be kept open. > > > > ... > > > > > +#define SPRD_EIC_DBNC_FORCE_CLK 0x8000 > > > > BIT(15) ? > > > > Yes, writing 1 to bit15 of the register can ensure that the clock of > rtc_1k remains normally on. Andy's comment means that you should use BIT(15) instead of 0x8000. > > > -- > > With Best Regards, > > Andy Shevchenko
On Fri, Jan 5, 2024 at 10:18 AM Chunyan Zhang <zhang.lyra@gmail.com> wrote: > > On Fri, 5 Jan 2024 at 10:11, wenhua lin <wenhua.lin1994@gmail.com> wrote: > > > > On Thu, Jan 4, 2024 at 9:00 PM Andy Shevchenko > > <andy.shevchenko@gmail.com> wrote: > > > > > > On Thu, Jan 4, 2024 at 4:43 AM Wenhua Lin <Wenhua.Lin@unisoc.com> wrote: > > > > > > > > The eic debounce does not have a clock of rtc_1k in the sleep state, > > > > but the eic debounce will be used to wake up the system, therefore the > > > > clock of rtc_1k needs to be kept open. > > > > > > ... > > > > > > > +#define SPRD_EIC_DBNC_FORCE_CLK 0x8000 > > > > > > BIT(15) ? > > > > > > > Yes, writing 1 to bit15 of the register can ensure that the clock of > > rtc_1k remains normally on. > > Andy's comment means that you should use BIT(15) instead of 0x8000. > OK, thank you very much for your explanation, I will make changes in patch v4. > > > > > -- > > > With Best Regards, > > > Andy Shevchenko
On Thu, 4 Jan 2024 at 10:43, Wenhua Lin <Wenhua.Lin@unisoc.com> wrote: > > The eic debounce does not have a clock of rtc_1k in the sleep state, > but the eic debounce will be used to wake up the system, therefore the > clock of rtc_1k needs to be kept open. It seems that this issue is not in the latest SoCs. I would suggest not changing for the time being. Thanks, Chunyan > > 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 be7f2fa5aa7b..bdcb3510a208 100644 > --- a/drivers/gpio/gpio-eic-sprd.c > +++ b/drivers/gpio/gpio-eic-sprd.c > @@ -24,6 +24,7 @@ > #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 > @@ -223,6 +224,7 @@ 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 >
On Fri, Jan 5, 2024 at 11:26 AM Chunyan Zhang <zhang.lyra@gmail.com> wrote: > > On Thu, 4 Jan 2024 at 10:43, Wenhua Lin <Wenhua.Lin@unisoc.com> wrote: > > > > The eic debounce does not have a clock of rtc_1k in the sleep state, > > but the eic debounce will be used to wake up the system, therefore the > > clock of rtc_1k needs to be kept open. > > It seems that this issue is not in the latest SoCs. I would suggest > not changing for the time being. > OK, we will delete this modification on pacth v4. > Thanks, > Chunyan > > > > > > 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 be7f2fa5aa7b..bdcb3510a208 100644 > > --- a/drivers/gpio/gpio-eic-sprd.c > > +++ b/drivers/gpio/gpio-eic-sprd.c > > @@ -24,6 +24,7 @@ > > #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 > > @@ -223,6 +224,7 @@ 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 > >
diff --git a/drivers/gpio/gpio-eic-sprd.c b/drivers/gpio/gpio-eic-sprd.c index be7f2fa5aa7b..bdcb3510a208 100644 --- a/drivers/gpio/gpio-eic-sprd.c +++ b/drivers/gpio/gpio-eic-sprd.c @@ -24,6 +24,7 @@ #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 @@ -223,6 +224,7 @@ 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;
The eic debounce does not have a clock of rtc_1k in the sleep state, but the eic debounce will be used to wake up the system, therefore the clock of rtc_1k needs to be kept open. Signed-off-by: Wenhua Lin <Wenhua.Lin@unisoc.com> --- drivers/gpio/gpio-eic-sprd.c | 2 ++ 1 file changed, 2 insertions(+)