| Message ID | 20200831075911.434-2-linux.amoon@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Enable RTC on Odroid N2 | expand |
On 31/08/2020 09:59, Anand Moon wrote: > Enable RTC PCF8563 node on Odroid-N2 SBC, In order to > support the RTC wakealarm feature for suspend and resume. > Also assign an alias to the pcf8563 to rtc0 and meson-vrtc to rtc1 > timer device to prevent it being assigned to /dev/rtc0 > which disto userspace tools assume is a clock device. > > Cc: Neil Armstrong <narmstrong@baylibre.com> > Cc: Kevin Hilman <khilman@baylibre.com> > Suggested-by: Christian Hewitt <christianshewitt@gmail.com> > Signed-off-by: Anand Moon <linux.amoon@gmail.com> > --- > Changes v4 > --Add gpio interrupt for GPIOAO.BIT7 as suggested by Neil. > Changes v3 > --Drop the INI GPIOAO.BIT7 pinctrl. > --Added missing RTC alias so that rtc get assigned correcly, > as suggested by Chris Hewitt. > changes v2 > --Fix the missing INT (GPIOAO.BIT7) pinctrl. > --Fix the missing rtcwakeup. > --Drop the clock not required clock property by the PCF8563 driver. > --- > .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > index 34fffa6d859d..3e2aaa6f48e5 100644 > --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > @@ -19,6 +19,8 @@ / { > aliases { > serial0 = &uart_AO; > ethernet0 = ðmac; > + rtc0 = &rtc0; > + rtc1 = &vrtc; > }; > > dioo2133: audio-amplifier-0 { > @@ -477,6 +479,21 @@ hdmi_tx_tmds_out: endpoint { > }; > }; > > +&i2c3 { > + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; > + pinctrl-names = "default"; > + status = "okay"; > + > + rtc0: rtc@51 { > + reg = <0x51>; > + compatible = "nxp,pcf8563"; > + /* RTC INT */ > + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; > + interrupt-parent = <&gpio_intc>; > + wakeup-source; > + }; > +}; > + > &ir { > status = "okay"; > pinctrl-0 = <&remote_input_ao_pins>; > Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Anand Moon <linux.amoon@gmail.com> writes: > Enable RTC PCF8563 node on Odroid-N2 SBC, In order to > support the RTC wakealarm feature for suspend and resume. > Also assign an alias to the pcf8563 to rtc0 and meson-vrtc to rtc1 > timer device to prevent it being assigned to /dev/rtc0 > which disto userspace tools assume is a clock device. > > Cc: Neil Armstrong <narmstrong@baylibre.com> > Cc: Kevin Hilman <khilman@baylibre.com> > Suggested-by: Christian Hewitt <christianshewitt@gmail.com> > Signed-off-by: Anand Moon <linux.amoon@gmail.com> > --- > Changes v4 > --Add gpio interrupt for GPIOAO.BIT7 as suggested by Neil. > Changes v3 > --Drop the INI GPIOAO.BIT7 pinctrl. > --Added missing RTC alias so that rtc get assigned correcly, > as suggested by Chris Hewitt. > changes v2 > --Fix the missing INT (GPIOAO.BIT7) pinctrl. > --Fix the missing rtcwakeup. > --Drop the clock not required clock property by the PCF8563 driver. > --- > .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > index 34fffa6d859d..3e2aaa6f48e5 100644 > --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > @@ -19,6 +19,8 @@ / { > aliases { > serial0 = &uart_AO; > ethernet0 = ðmac; > + rtc0 = &rtc0; > + rtc1 = &vrtc; > }; > > dioo2133: audio-amplifier-0 { > @@ -477,6 +479,21 @@ hdmi_tx_tmds_out: endpoint { > }; > }; > > +&i2c3 { > + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; > + pinctrl-names = "default"; > + status = "okay"; > + > + rtc0: rtc@51 { > + reg = <0x51>; > + compatible = "nxp,pcf8563"; > + /* RTC INT */ > + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; > + interrupt-parent = <&gpio_intc>; > + wakeup-source; > + }; > +}; There's still no pinctrl definition for the GPIO pin being used as the IRQ. It looks like you discussed this with Martin and he pointed you in the right direction in your v3 series, but I don't see it in this patch. You can see the GPIOs that the kernel knows about using the GPIO debugfs. For example: / # cat /sys/kernel/debug/gpio gpiochip1: GPIOs 412-426, parent: platform/ff800000.sys-ctrl:pinctrl@14, aobus-banks: gpio-414 ( |enable ) out lo gpio-420 ( |regulator-tflash_vdd) out hi gpio-421 ( |TF_IO ) out lo gpio-423 ( |n2:blue ) out lo gpiochip0: GPIOs 427-511, parent: platform/ff634400.bus:pinctrl@40, periphs-banks: gpio-442 ( |PHY reset ) out hi ACTIVE LOW gpio-447 ( |usb-hub-reset ) out hi gpio-448 ( |regulator-hub_5v ) out hi gpio-449 ( |regulator-usb_pwr_en) out lo gpio-464 ( |reset ) out hi ACTIVE LOW gpio-474 ( |cd ) in lo ACTIVE LOW Also, I tested this on my odroid-n2, and it does not fully wakeup[1]. At the end of the log, you can see the "resume rate" of the big and little cores, which suggests that the SoC has woken and trying to resume, but it never makes it back to the kernel. Could you be more specific with exactly what u-boot you're running (mainline version and Khadas version.) I'm running an older version of mainline u-boot: U-Boot 2019.07-rc3-00029-g47bebaa4a3-dirty (Jun 04 2019 - 17:16:32 +0200) odroid-n2 Kevin [1] / # dmesg |grep -i rtc [ 14.799773] meson-vrtc ff8000a8.rtc: registered as rtc1 [ 14.871365] rtc-pcf8563 0-0051: low voltage detected, date/time is not reliable. [ 14.871519] rtc-pcf8563 0-0051: registered as rtc0 [ 14.873536] rtc-pcf8563 0-0051: low voltage detected, date/time is not reliable. [ 14.886474] rtc-pcf8563 0-0051: hctosys: unable to read the hardware clock / # rtcwake -d rtc0 -m mem -s5 rtcwake: assuming RTC uses UTC ... rtcwake: wakeup from "mem" using rtc0 at Mon Aug 31 19:58:15 2020 [ 119.297633] PM: suspend entry (deep) [ 119.297722] Filesystems sync: 0.000 seconds [ 119.300330] Freezing user space processes ... (elapsed 0.003 seconds) done. [ 119.306667] OOM killer disabled. [ 119.309828] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 119.317184] printk: Suspending console(s) (use no_console_suspend to debug) bl30 get wakeup sources! process command 00000006 bl30 enter suspend! Little core clk suspend rate 1200000000 Big core clk suspend rate 24000000 store restore gp0 pll suspend_counter: 1 Enter ddr suspend ddr suspend time: 17us alarm=0S process command 00000001 cec ver:2018/04/19 CEC cfg:0x0000 WAKEUP GPIO cfg:0x00000000 use vddee new table! WAKEUP GPIO FAIL - invalid key fffffe71 use vddee new table! exit_reason:0x03 Enter ddr resume ddr resume time: 125us store restore gp0 pll cfg15 3b00000 cfg15 33b00000 Little core clk resume rate 1200000000 Big core clk resume rate 50000000
Hi Kevin, Thanks for your review comments and testing. On Tue, 1 Sep 2020 at 01:36, Kevin Hilman <khilman@baylibre.com> wrote: > > Anand Moon <linux.amoon@gmail.com> writes: > > > Enable RTC PCF8563 node on Odroid-N2 SBC, In order to > > support the RTC wakealarm feature for suspend and resume. > > Also assign an alias to the pcf8563 to rtc0 and meson-vrtc to rtc1 > > timer device to prevent it being assigned to /dev/rtc0 > > which disto userspace tools assume is a clock device. > > > > Cc: Neil Armstrong <narmstrong@baylibre.com> > > Cc: Kevin Hilman <khilman@baylibre.com> > > Suggested-by: Christian Hewitt <christianshewitt@gmail.com> > > Signed-off-by: Anand Moon <linux.amoon@gmail.com> > > --- > > Changes v4 > > --Add gpio interrupt for GPIOAO.BIT7 as suggested by Neil. > > Changes v3 > > --Drop the INI GPIOAO.BIT7 pinctrl. > > --Added missing RTC alias so that rtc get assigned correcly, > > as suggested by Chris Hewitt. > > changes v2 > > --Fix the missing INT (GPIOAO.BIT7) pinctrl. > > --Fix the missing rtcwakeup. > > --Drop the clock not required clock property by the PCF8563 driver. > > --- > > .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 17 +++++++++++++++++ > > 1 file changed, 17 insertions(+) > > > > diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > > index 34fffa6d859d..3e2aaa6f48e5 100644 > > --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > > +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > > @@ -19,6 +19,8 @@ / { > > aliases { > > serial0 = &uart_AO; > > ethernet0 = ðmac; > > + rtc0 = &rtc0; > > + rtc1 = &vrtc; > > }; > > > > dioo2133: audio-amplifier-0 { > > @@ -477,6 +479,21 @@ hdmi_tx_tmds_out: endpoint { > > }; > > }; > > > > +&i2c3 { > > + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; > > + pinctrl-names = "default"; > > + status = "okay"; > > + > > + rtc0: rtc@51 { > > + reg = <0x51>; > > + compatible = "nxp,pcf8563"; > > + /* RTC INT */ > > + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; > > + interrupt-parent = <&gpio_intc>; > > + wakeup-source; > > + }; > > +}; > > There's still no pinctrl definition for the GPIO pin being used as the > IRQ. It looks like you discussed this with Martin and he pointed you in > the right direction in your v3 series, but I don't see it in this > patch. > Yes I had followed the approach suggested by Martin on previous email and IRC. but it really did not work out for me in the testing. rtc-pcf8563 driver does not handle such gpio configuration. so the rtc probe will fail if we add gpio pinctl to *pinctrl-0*. So there could be an internal way the wakeup gets triggered for the u-boot. _This is the reason I have opted for Neil's suggestion._ > You can see the GPIOs that the kernel knows about using the GPIO > debugfs. For example: > Yes I had already checked this /sys/kernel/debug/gpio it's not reflecting at my end as well. > / # cat /sys/kernel/debug/gpio > gpiochip1: GPIOs 412-426, parent: platform/ff800000.sys-ctrl:pinctrl@14, aobus-banks: > gpio-414 ( |enable ) out lo > gpio-420 ( |regulator-tflash_vdd) out hi > gpio-421 ( |TF_IO ) out lo > gpio-423 ( |n2:blue ) out lo > > gpiochip0: GPIOs 427-511, parent: platform/ff634400.bus:pinctrl@40, periphs-banks: > gpio-442 ( |PHY reset ) out hi ACTIVE LOW > gpio-447 ( |usb-hub-reset ) out hi > gpio-448 ( |regulator-hub_5v ) out hi > gpio-449 ( |regulator-usb_pwr_en) out lo > gpio-464 ( |reset ) out hi ACTIVE LOW > gpio-474 ( |cd ) in lo ACTIVE LOW > > > Also, I tested this on my odroid-n2, and it does not fully wakeup[1]. > At the end of the log, you can see the "resume rate" of the big and > little cores, which suggests that the SoC has woken and trying to > resume, but it never makes it back to the kernel. I feel the RTC wakeup is handled by the u-boot bl30 since virtual RTC we pass the seconds as sleep is reflected in the logs. # rtcwake -d /dev/rtc1 -s 5 -m mem ... bl30 get wakeup sources! process command 00000006 bl30 enter suspend! Little core clk suspend rate 1398000000 Big core clk suspend rate 24000000 store restore gp0 pll suspend_counter: 1 Enter ddr suspend ddr suspend time: 16us *alarm=6S* process command 00000001 GPIOA_11/13 off cec ver:2018/04/19 CEC cfg:0x0000 WAKEUP GPIO cfg:0x00000000 ... > > Could you be more specific with exactly what u-boot you're running > (mainline version and Khadas version.) > On u-boot Mainline U-Boot 2020.10-rc2-00133-g60d5402950-dirty (Aug 16 2020 - 20:25:26 +0530) odroid-n2 [0] https://pastebin.com/GGUM7k8Q On u-boot Hardkernel U-Boot 2015.01-10 (Dec 08 2019 - 14:54:07) Arch Linux ARM (Hardkernel U-boot) [1] https://pastebin.com/WbHGFmH2 Note: Yes I have observed there is some off sync in sleep timeout. > I'm running an older version of mainline u-boot: > U-Boot 2019.07-rc3-00029-g47bebaa4a3-dirty (Jun 04 2019 - 17:16:32 +0200) odroid-n2 > > Kevin > Yes I have observed this at my end on Hardkernel u-boot. This message is because you have not sync the hwclock with the timezone. # sudo hwclock -w -f /dev/rtc0 # sudo hwclock --systohc Once you sync with the timezone these messages are resolved. > > [1] > / # dmesg |grep -i rtc > [ 14.799773] meson-vrtc ff8000a8.rtc: registered as rtc1 > [ 14.871365] rtc-pcf8563 0-0051: low voltage detected, date/time is not reliable. > [ 14.871519] rtc-pcf8563 0-0051: registered as rtc0 > [ 14.873536] rtc-pcf8563 0-0051: low voltage detected, date/time is not reliable. > [ 14.886474] rtc-pcf8563 0-0051: hctosys: unable to read the hardware clock > / # rtcwake -d rtc0 -m mem -s5 > rtcwake: assuming RTC uses UTC ... > rtcwake: wakeup from "mem" using rtc0 at Mon Aug 31 19:58:15 2020 > [ 119.297633] PM: suspend entry (deep) > [ 119.297722] Filesystems sync: 0.000 seconds > [ 119.300330] Freezing user space processes ... (elapsed 0.003 seconds) done. > [ 119.306667] OOM killer disabled. > [ 119.309828] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. > [ 119.317184] printk: Suspending console(s) (use no_console_suspend to debug) > bl30 get wakeup sources! > process command 00000006 > bl30 enter suspend! > Little core clk suspend rate 1200000000 > Big core clk suspend rate 24000000 > store restore gp0 pll > suspend_counter: 1 > Enter ddr suspend > ddr suspend time: 17us > alarm=0S > process command 00000001 > cec ver:2018/04/19 > CEC cfg:0x0000 > WAKEUP GPIO cfg:0x00000000 > use vddee new table! > WAKEUP GPIO FAIL - invalid key > fffffe71 > use vddee new table! > exit_reason:0x03 > Enter ddr resume > ddr resume time: 125us > store restore gp0 pll > cfg15 3b00000 > cfg15 33b00000 > Little core clk resume rate 1200000000 > Big core clk resume rate 50000000 > > Best Regards -Anand
On 01/09/2020 12:14, Anand Moon wrote: > Hi Kevin, > > Thanks for your review comments and testing. > > On Tue, 1 Sep 2020 at 01:36, Kevin Hilman <khilman@baylibre.com> wrote: >> >> Anand Moon <linux.amoon@gmail.com> writes: >> >>> Enable RTC PCF8563 node on Odroid-N2 SBC, In order to >>> support the RTC wakealarm feature for suspend and resume. >>> Also assign an alias to the pcf8563 to rtc0 and meson-vrtc to rtc1 >>> timer device to prevent it being assigned to /dev/rtc0 >>> which disto userspace tools assume is a clock device. >>> >>> Cc: Neil Armstrong <narmstrong@baylibre.com> >>> Cc: Kevin Hilman <khilman@baylibre.com> >>> Suggested-by: Christian Hewitt <christianshewitt@gmail.com> >>> Signed-off-by: Anand Moon <linux.amoon@gmail.com> >>> --- >>> Changes v4 >>> --Add gpio interrupt for GPIOAO.BIT7 as suggested by Neil. >>> Changes v3 >>> --Drop the INI GPIOAO.BIT7 pinctrl. >>> --Added missing RTC alias so that rtc get assigned correcly, >>> as suggested by Chris Hewitt. >>> changes v2 >>> --Fix the missing INT (GPIOAO.BIT7) pinctrl. >>> --Fix the missing rtcwakeup. >>> --Drop the clock not required clock property by the PCF8563 driver. >>> --- >>> .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 17 +++++++++++++++++ >>> 1 file changed, 17 insertions(+) >>> >>> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts >>> index 34fffa6d859d..3e2aaa6f48e5 100644 >>> --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts >>> +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts >>> @@ -19,6 +19,8 @@ / { >>> aliases { >>> serial0 = &uart_AO; >>> ethernet0 = ðmac; >>> + rtc0 = &rtc0; >>> + rtc1 = &vrtc; >>> }; >>> >>> dioo2133: audio-amplifier-0 { >>> @@ -477,6 +479,21 @@ hdmi_tx_tmds_out: endpoint { >>> }; >>> }; >>> >>> +&i2c3 { >>> + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; >>> + pinctrl-names = "default"; >>> + status = "okay"; >>> + >>> + rtc0: rtc@51 { >>> + reg = <0x51>; >>> + compatible = "nxp,pcf8563"; >>> + /* RTC INT */ >>> + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; >>> + interrupt-parent = <&gpio_intc>; >>> + wakeup-source; >>> + }; >>> +}; >> >> There's still no pinctrl definition for the GPIO pin being used as the >> IRQ. It looks like you discussed this with Martin and he pointed you in >> the right direction in your v3 series, but I don't see it in this >> patch. >> > Yes I had followed the approach suggested by Martin on previous email and IRC. > but it really did not work out for me in the testing. > > rtc-pcf8563 driver does not handle such gpio configuration. > so the rtc probe will fail if we add gpio pinctl to *pinctrl-0*. No need for multiple pinctrl-*, simple add a new pinctrl to the rtc node like: @@ -18,6 +18,8 @@ aliases { serial0 = &uart_AO; ethernet0 = ðmac; + rtc0 = &rtc0; + rtc1 = &vrtc; }; chosen { @@ -266,6 +268,17 @@ status = "okay"; }; +&ao_pinctrl { + rtc_int_pins: rtc-int { + mux { + groups = "GPIOAO_7"; + function = "gpio_aobus"; + bias-disable; + output-disable; + }; + }; +}; + &cec_AO { pinctrl-0 = <&cec_ao_a_h_pins>; pinctrl-names = "default"; @@ -391,6 +404,23 @@ }; }; +&i2c3 { + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; + pinctrl-names = "default"; + status = "okay"; + + rtc0: rtc@51 { + pinctrl-0 = <&rtc_int_pins>; + pinctrl-names = "default"; + reg = <0x51>; + compatible = "nxp,pcf8563"; + /* RTC INT */ + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; + interrupt-parent = <&gpio_intc>; + wakeup-source; + }; +}; + &ir { status = "okay"; pinctrl-0 = <&remote_input_ao_pins>; DISCALIMER: not built or run tested Neil > > So there could be an internal way the wakeup gets triggered for the u-boot. > _This is the reason I have opted for Neil's suggestion._ > >> You can see the GPIOs that the kernel knows about using the GPIO >> debugfs. For example: >> > > Yes I had already checked this /sys/kernel/debug/gpio > it's not reflecting at my end as well. > >> / # cat /sys/kernel/debug/gpio >> gpiochip1: GPIOs 412-426, parent: platform/ff800000.sys-ctrl:pinctrl@14, aobus-banks: >> gpio-414 ( |enable ) out lo >> gpio-420 ( |regulator-tflash_vdd) out hi >> gpio-421 ( |TF_IO ) out lo >> gpio-423 ( |n2:blue ) out lo >> >> gpiochip0: GPIOs 427-511, parent: platform/ff634400.bus:pinctrl@40, periphs-banks: >> gpio-442 ( |PHY reset ) out hi ACTIVE LOW >> gpio-447 ( |usb-hub-reset ) out hi >> gpio-448 ( |regulator-hub_5v ) out hi >> gpio-449 ( |regulator-usb_pwr_en) out lo >> gpio-464 ( |reset ) out hi ACTIVE LOW >> gpio-474 ( |cd ) in lo ACTIVE LOW >> >> >> Also, I tested this on my odroid-n2, and it does not fully wakeup[1]. >> At the end of the log, you can see the "resume rate" of the big and >> little cores, which suggests that the SoC has woken and trying to >> resume, but it never makes it back to the kernel. > > I feel the RTC wakeup is handled by the u-boot bl30 > since virtual RTC we pass the seconds as sleep > is reflected in the logs. > > # rtcwake -d /dev/rtc1 -s 5 -m mem > ... > bl30 get wakeup sources! > process command 00000006 > bl30 enter suspend! > Little core clk suspend rate 1398000000 > Big core clk suspend rate 24000000 > store restore gp0 pll > suspend_counter: 1 > Enter ddr suspend > ddr suspend time: 16us > *alarm=6S* > process command 00000001 > GPIOA_11/13 off > cec ver:2018/04/19 > CEC cfg:0x0000 > WAKEUP GPIO cfg:0x00000000 > ... > >> >> Could you be more specific with exactly what u-boot you're running >> (mainline version and Khadas version.) >> > > On u-boot Mainline > U-Boot 2020.10-rc2-00133-g60d5402950-dirty (Aug 16 2020 - 20:25:26 > +0530) odroid-n2 > > [0] https://pastebin.com/GGUM7k8Q > > On u-boot Hardkernel > U-Boot 2015.01-10 (Dec 08 2019 - 14:54:07) Arch Linux ARM (Hardkernel U-boot) > > [1] https://pastebin.com/WbHGFmH2 > > Note: Yes I have observed there is some off sync in sleep timeout. > >> I'm running an older version of mainline u-boot: >> U-Boot 2019.07-rc3-00029-g47bebaa4a3-dirty (Jun 04 2019 - 17:16:32 +0200) odroid-n2 >> >> Kevin >> > > Yes I have observed this at my end on Hardkernel u-boot. > This message is because you have not sync the hwclock with the timezone. > > # sudo hwclock -w -f /dev/rtc0 > # sudo hwclock --systohc > > Once you sync with the timezone these messages are resolved. >> >> [1] >> / # dmesg |grep -i rtc >> [ 14.799773] meson-vrtc ff8000a8.rtc: registered as rtc1 >> [ 14.871365] rtc-pcf8563 0-0051: low voltage detected, date/time is not reliable. >> [ 14.871519] rtc-pcf8563 0-0051: registered as rtc0 >> [ 14.873536] rtc-pcf8563 0-0051: low voltage detected, date/time is not reliable. >> [ 14.886474] rtc-pcf8563 0-0051: hctosys: unable to read the hardware clock >> / # rtcwake -d rtc0 -m mem -s5 >> rtcwake: assuming RTC uses UTC ... >> rtcwake: wakeup from "mem" using rtc0 at Mon Aug 31 19:58:15 2020 >> [ 119.297633] PM: suspend entry (deep) >> [ 119.297722] Filesystems sync: 0.000 seconds >> [ 119.300330] Freezing user space processes ... (elapsed 0.003 seconds) done. >> [ 119.306667] OOM killer disabled. >> [ 119.309828] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. >> [ 119.317184] printk: Suspending console(s) (use no_console_suspend to debug) >> bl30 get wakeup sources! >> process command 00000006 >> bl30 enter suspend! >> Little core clk suspend rate 1200000000 >> Big core clk suspend rate 24000000 >> store restore gp0 pll >> suspend_counter: 1 >> Enter ddr suspend >> ddr suspend time: 17us >> alarm=0S >> process command 00000001 >> cec ver:2018/04/19 >> CEC cfg:0x0000 >> WAKEUP GPIO cfg:0x00000000 >> use vddee new table! >> WAKEUP GPIO FAIL - invalid key >> fffffe71 >> use vddee new table! >> exit_reason:0x03 >> Enter ddr resume >> ddr resume time: 125us >> store restore gp0 pll >> cfg15 3b00000 >> cfg15 33b00000 >> Little core clk resume rate 1200000000 >> Big core clk resume rate 50000000 >> >> > > Best Regards > -Anand >
Hi Neil, On Tue, 1 Sep 2020 at 18:42, Neil Armstrong <narmstrong@baylibre.com> wrote: > > On 01/09/2020 12:14, Anand Moon wrote: > > Hi Kevin, > > > > Thanks for your review comments and testing. > > > > On Tue, 1 Sep 2020 at 01:36, Kevin Hilman <khilman@baylibre.com> wrote: > >> > >> Anand Moon <linux.amoon@gmail.com> writes: > >> > >>> Enable RTC PCF8563 node on Odroid-N2 SBC, In order to > >>> support the RTC wakealarm feature for suspend and resume. > >>> Also assign an alias to the pcf8563 to rtc0 and meson-vrtc to rtc1 > >>> timer device to prevent it being assigned to /dev/rtc0 > >>> which disto userspace tools assume is a clock device. > >>> > >>> Cc: Neil Armstrong <narmstrong@baylibre.com> > >>> Cc: Kevin Hilman <khilman@baylibre.com> > >>> Suggested-by: Christian Hewitt <christianshewitt@gmail.com> > >>> Signed-off-by: Anand Moon <linux.amoon@gmail.com> > >>> --- > >>> Changes v4 > >>> --Add gpio interrupt for GPIOAO.BIT7 as suggested by Neil. > >>> Changes v3 > >>> --Drop the INI GPIOAO.BIT7 pinctrl. > >>> --Added missing RTC alias so that rtc get assigned correcly, > >>> as suggested by Chris Hewitt. > >>> changes v2 > >>> --Fix the missing INT (GPIOAO.BIT7) pinctrl. > >>> --Fix the missing rtcwakeup. > >>> --Drop the clock not required clock property by the PCF8563 driver. > >>> --- > >>> .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 17 +++++++++++++++++ > >>> 1 file changed, 17 insertions(+) > >>> > >>> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > >>> index 34fffa6d859d..3e2aaa6f48e5 100644 > >>> --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > >>> +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > >>> @@ -19,6 +19,8 @@ / { > >>> aliases { > >>> serial0 = &uart_AO; > >>> ethernet0 = ðmac; > >>> + rtc0 = &rtc0; > >>> + rtc1 = &vrtc; > >>> }; > >>> > >>> dioo2133: audio-amplifier-0 { > >>> @@ -477,6 +479,21 @@ hdmi_tx_tmds_out: endpoint { > >>> }; > >>> }; > >>> > >>> +&i2c3 { > >>> + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; > >>> + pinctrl-names = "default"; > >>> + status = "okay"; > >>> + > >>> + rtc0: rtc@51 { > >>> + reg = <0x51>; > >>> + compatible = "nxp,pcf8563"; > >>> + /* RTC INT */ > >>> + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; > >>> + interrupt-parent = <&gpio_intc>; > >>> + wakeup-source; > >>> + }; > >>> +}; > >> > >> There's still no pinctrl definition for the GPIO pin being used as the > >> IRQ. It looks like you discussed this with Martin and he pointed you in > >> the right direction in your v3 series, but I don't see it in this > >> patch. > >> > > Yes I had followed the approach suggested by Martin on previous email and IRC. > > but it really did not work out for me in the testing. > > > > rtc-pcf8563 driver does not handle such gpio configuration. > > so the rtc probe will fail if we add gpio pinctl to *pinctrl-0*. > > No need for multiple pinctrl-*, simple add a new pinctrl to the rtc node like: > > > @@ -18,6 +18,8 @@ > aliases { > serial0 = &uart_AO; > ethernet0 = ðmac; > + rtc0 = &rtc0; > + rtc1 = &vrtc; > }; > > chosen { > @@ -266,6 +268,17 @@ > status = "okay"; > }; > > +&ao_pinctrl { > + rtc_int_pins: rtc-int { > + mux { > + groups = "GPIOAO_7"; > + function = "gpio_aobus"; > + bias-disable; > + output-disable; > + }; > + }; > +}; > + > &cec_AO { > pinctrl-0 = <&cec_ao_a_h_pins>; > pinctrl-names = "default"; > @@ -391,6 +404,23 @@ > }; > }; > > +&i2c3 { > + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; > + pinctrl-names = "default"; > + status = "okay"; > + > + rtc0: rtc@51 { > + pinctrl-0 = <&rtc_int_pins>; > + pinctrl-names = "default"; > + reg = <0x51>; > + compatible = "nxp,pcf8563"; > + /* RTC INT */ > + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; > + interrupt-parent = <&gpio_intc>; > + wakeup-source; > + }; > +}; > + > &ir { > status = "okay"; > pinctrl-0 = <&remote_input_ao_pins>; > > DISCALIMER: not built or run tested > > Neil > I have built this and tested, but still this gpio pin # cat /sys/kernel/debug/gpio gpiochip1: GPIOs 412-426, parent: platform/ff800000.sys-ctrl:pinctrl@14, aobus-banks: gpio-414 ( |enable ) out lo gpio-420 ( |regulator-tflash_vdd) out hi gpio-421 ( |TF_IO ) out lo gpio-423 ( |n2:blue ) out lo gpiochip0: GPIOs 427-511, parent: platform/ff634400.bus:pinctrl@40, periphs-banks: gpio-442 ( |PHY reset ) out hi ACTIVE LOW gpio-447 ( |usb-hub-reset ) out hi gpio-448 ( |regulator-hub_5v ) out hi gpio-449 ( |regulator-usb_pwr_en) out lo gpio-464 ( |reset ) out hi ACTIVE LOW gpio-474 ( |cd ) in lo ACTIVE LOW This change fails on *u-boot Hardkernel* There is some timing issue, some time it wakes up and some time it gets stuck. # rtcwake -d /dev/rtc0 -s 10 rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Sep 1 14:05:47 2020 [ 35.565415] PM: suspend entry (deep) [ 35.565589] Filesystems sync: 0.000 seconds [ 72.670162] cfg80211: failed to load regulatory.db [ 72.670164] Freezing user space processes ... (elapsed 0.001 seconds) done. [ 72.676235] OOM killer disabled. [ 72.679418] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 72.688636] meson8b-dwmac ff3f0000.ethernet eth0: Link is Down [ 72.709953] sd 0:0:0:0: [sda] Synchronizing SCSI cache [ 72.830228] Disabling non-boot CPUs ... [ 72.831157] CPU1: shutdown [ 72.832204] psci: CPU1 killed (polled 0 ms) [ 72.837376] CPU2: shutdown [ 72.837974] psci: CPU2 killed (polled 0 ms) [ 72.843880] CPU3: shutdown [ 72.844742] psci: CPU3 killed (polled 0 ms) [ 72.850925] CPU4: shutdown [ 72.851557] psci: CPU4 killed (polled 0 ms) [ 72.858185] CPU5: shutdown [ 72.858372] psci: CPU5 killed (polled 0 ms) bl30 get wakeup sources! process command 00000006 bl30 enter suspend! Little core clk suspend rate 66700000 Big core clk suspend rate 24000000 store restore gp0 pll suspend_counter: 1 Enter ddr suspend ddr suspend time: 17us alarm=0S process command 00000001 cec ver:2018/04/19 CEC cfg:0x0000 WAKEUP GPIO cfg:0x00000000 use vddee new table! kern log_addr:0x00 cec T: 00 err: tx not finish flag cec reset Set cec pinmux:0x11 Set cec log_addr:0x10,ADDR0:10 customer pwrkeys for IR is NULL, use defaults! Best Regards -Anand
On 01/09/2020 17:29, Anand Moon wrote: > Hi Neil, > > On Tue, 1 Sep 2020 at 18:42, Neil Armstrong <narmstrong@baylibre.com> wrote: >> >> On 01/09/2020 12:14, Anand Moon wrote: >>> Hi Kevin, >>> >>> Thanks for your review comments and testing. >>> >>> On Tue, 1 Sep 2020 at 01:36, Kevin Hilman <khilman@baylibre.com> wrote: >>>> >>>> Anand Moon <linux.amoon@gmail.com> writes: >>>> >>>>> Enable RTC PCF8563 node on Odroid-N2 SBC, In order to >>>>> support the RTC wakealarm feature for suspend and resume. >>>>> Also assign an alias to the pcf8563 to rtc0 and meson-vrtc to rtc1 >>>>> timer device to prevent it being assigned to /dev/rtc0 >>>>> which disto userspace tools assume is a clock device. >>>>> >>>>> Cc: Neil Armstrong <narmstrong@baylibre.com> >>>>> Cc: Kevin Hilman <khilman@baylibre.com> >>>>> Suggested-by: Christian Hewitt <christianshewitt@gmail.com> >>>>> Signed-off-by: Anand Moon <linux.amoon@gmail.com> >>>>> --- >>>>> Changes v4 >>>>> --Add gpio interrupt for GPIOAO.BIT7 as suggested by Neil. >>>>> Changes v3 >>>>> --Drop the INI GPIOAO.BIT7 pinctrl. >>>>> --Added missing RTC alias so that rtc get assigned correcly, >>>>> as suggested by Chris Hewitt. >>>>> changes v2 >>>>> --Fix the missing INT (GPIOAO.BIT7) pinctrl. >>>>> --Fix the missing rtcwakeup. >>>>> --Drop the clock not required clock property by the PCF8563 driver. >>>>> --- >>>>> .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 17 +++++++++++++++++ >>>>> 1 file changed, 17 insertions(+) >>>>> >>>>> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts >>>>> index 34fffa6d859d..3e2aaa6f48e5 100644 >>>>> --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts >>>>> +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts >>>>> @@ -19,6 +19,8 @@ / { >>>>> aliases { >>>>> serial0 = &uart_AO; >>>>> ethernet0 = ðmac; >>>>> + rtc0 = &rtc0; >>>>> + rtc1 = &vrtc; >>>>> }; >>>>> >>>>> dioo2133: audio-amplifier-0 { >>>>> @@ -477,6 +479,21 @@ hdmi_tx_tmds_out: endpoint { >>>>> }; >>>>> }; >>>>> >>>>> +&i2c3 { >>>>> + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; >>>>> + pinctrl-names = "default"; >>>>> + status = "okay"; >>>>> + >>>>> + rtc0: rtc@51 { >>>>> + reg = <0x51>; >>>>> + compatible = "nxp,pcf8563"; >>>>> + /* RTC INT */ >>>>> + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; >>>>> + interrupt-parent = <&gpio_intc>; >>>>> + wakeup-source; >>>>> + }; >>>>> +}; >>>> >>>> There's still no pinctrl definition for the GPIO pin being used as the >>>> IRQ. It looks like you discussed this with Martin and he pointed you in >>>> the right direction in your v3 series, but I don't see it in this >>>> patch. >>>> >>> Yes I had followed the approach suggested by Martin on previous email and IRC. >>> but it really did not work out for me in the testing. >>> >>> rtc-pcf8563 driver does not handle such gpio configuration. >>> so the rtc probe will fail if we add gpio pinctl to *pinctrl-0*. >> >> No need for multiple pinctrl-*, simple add a new pinctrl to the rtc node like: >> >> >> @@ -18,6 +18,8 @@ >> aliases { >> serial0 = &uart_AO; >> ethernet0 = ðmac; >> + rtc0 = &rtc0; >> + rtc1 = &vrtc; >> }; >> >> chosen { >> @@ -266,6 +268,17 @@ >> status = "okay"; >> }; >> >> +&ao_pinctrl { >> + rtc_int_pins: rtc-int { >> + mux { >> + groups = "GPIOAO_7"; >> + function = "gpio_aobus"; >> + bias-disable; >> + output-disable; >> + }; >> + }; >> +}; >> + >> &cec_AO { >> pinctrl-0 = <&cec_ao_a_h_pins>; >> pinctrl-names = "default"; >> @@ -391,6 +404,23 @@ >> }; >> }; >> >> +&i2c3 { >> + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; >> + pinctrl-names = "default"; >> + status = "okay"; >> + >> + rtc0: rtc@51 { >> + pinctrl-0 = <&rtc_int_pins>; >> + pinctrl-names = "default"; >> + reg = <0x51>; >> + compatible = "nxp,pcf8563"; >> + /* RTC INT */ >> + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; >> + interrupt-parent = <&gpio_intc>; >> + wakeup-source; >> + }; >> +}; >> + >> &ir { >> status = "okay"; >> pinctrl-0 = <&remote_input_ao_pins>; >> >> DISCALIMER: not built or run tested >> >> Neil >> > > I have built this and tested, but still this gpio pin Can you remove the "bias-disable" in rtc_int_pins and retry ? The default bias is pull-up, removing it may cause this. If it works, can you try "bias-pull-up" ? if it works, keep it and resend with my ack. Neil > > # cat /sys/kernel/debug/gpio > gpiochip1: GPIOs 412-426, parent: > platform/ff800000.sys-ctrl:pinctrl@14, aobus-banks: > gpio-414 ( |enable ) out lo > gpio-420 ( |regulator-tflash_vdd) out hi > gpio-421 ( |TF_IO ) out lo > gpio-423 ( |n2:blue ) out lo > > gpiochip0: GPIOs 427-511, parent: platform/ff634400.bus:pinctrl@40, > periphs-banks: > gpio-442 ( |PHY reset ) out hi ACTIVE LOW > gpio-447 ( |usb-hub-reset ) out hi > gpio-448 ( |regulator-hub_5v ) out hi > gpio-449 ( |regulator-usb_pwr_en) out lo > gpio-464 ( |reset ) out hi ACTIVE LOW > gpio-474 ( |cd ) in lo ACTIVE LOW > > This change fails on *u-boot Hardkernel* > There is some timing issue, some time it wakes up and > some time it gets stuck. > > # rtcwake -d /dev/rtc0 -s 10 > rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Sep 1 14:05:47 2020 > [ 35.565415] PM: suspend entry (deep) > [ 35.565589] Filesystems sync: 0.000 seconds > [ 72.670162] cfg80211: failed to load regulatory.db > [ 72.670164] Freezing user space processes ... (elapsed 0.001 seconds) done. > [ 72.676235] OOM killer disabled. > [ 72.679418] Freezing remaining freezable tasks ... (elapsed 0.001 > seconds) done. > [ 72.688636] meson8b-dwmac ff3f0000.ethernet eth0: Link is Down > [ 72.709953] sd 0:0:0:0: [sda] Synchronizing SCSI cache > [ 72.830228] Disabling non-boot CPUs ... > [ 72.831157] CPU1: shutdown > [ 72.832204] psci: CPU1 killed (polled 0 ms) > [ 72.837376] CPU2: shutdown > [ 72.837974] psci: CPU2 killed (polled 0 ms) > [ 72.843880] CPU3: shutdown > [ 72.844742] psci: CPU3 killed (polled 0 ms) > [ 72.850925] CPU4: shutdown > [ 72.851557] psci: CPU4 killed (polled 0 ms) > [ 72.858185] CPU5: shutdown > [ 72.858372] psci: CPU5 killed (polled 0 ms) > bl30 get wakeup sources! > process command 00000006 > bl30 enter suspend! > Little core clk suspend rate 66700000 > Big core clk suspend rate 24000000 > store restore gp0 pll > suspend_counter: 1 > Enter ddr suspend > ddr suspend time: 17us > alarm=0S > process command 00000001 > cec ver:2018/04/19 > CEC cfg:0x0000 > WAKEUP GPIO cfg:0x00000000 > use vddee new table! > kern log_addr:0x00 > cec T: 00 > err: tx not finish flag > cec reset > Set cec pinmux:0x11 > Set cec log_addr:0x10,ADDR0:10 > customer pwrkeys for IR is NULL, use defaults! > > Best Regards > -Anand >
hi Neil, On Wed, 2 Sep 2020 at 12:48, Neil Armstrong <narmstrong@baylibre.com> wrote: > > On 01/09/2020 17:29, Anand Moon wrote: > > Hi Neil, > > > > On Tue, 1 Sep 2020 at 18:42, Neil Armstrong <narmstrong@baylibre.com> wrote: > >> > >> On 01/09/2020 12:14, Anand Moon wrote: > >>> Hi Kevin, > >>> > >>> Thanks for your review comments and testing. > >>> > >>> On Tue, 1 Sep 2020 at 01:36, Kevin Hilman <khilman@baylibre.com> wrote: > >>>> > >>>> Anand Moon <linux.amoon@gmail.com> writes: > >>>> > >>>>> Enable RTC PCF8563 node on Odroid-N2 SBC, In order to > >>>>> support the RTC wakealarm feature for suspend and resume. > >>>>> Also assign an alias to the pcf8563 to rtc0 and meson-vrtc to rtc1 > >>>>> timer device to prevent it being assigned to /dev/rtc0 > >>>>> which disto userspace tools assume is a clock device. > >>>>> > >>>>> Cc: Neil Armstrong <narmstrong@baylibre.com> > >>>>> Cc: Kevin Hilman <khilman@baylibre.com> > >>>>> Suggested-by: Christian Hewitt <christianshewitt@gmail.com> > >>>>> Signed-off-by: Anand Moon <linux.amoon@gmail.com> > >>>>> --- > >>>>> Changes v4 > >>>>> --Add gpio interrupt for GPIOAO.BIT7 as suggested by Neil. > >>>>> Changes v3 > >>>>> --Drop the INI GPIOAO.BIT7 pinctrl. > >>>>> --Added missing RTC alias so that rtc get assigned correcly, > >>>>> as suggested by Chris Hewitt. > >>>>> changes v2 > >>>>> --Fix the missing INT (GPIOAO.BIT7) pinctrl. > >>>>> --Fix the missing rtcwakeup. > >>>>> --Drop the clock not required clock property by the PCF8563 driver. > >>>>> --- > >>>>> .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 17 +++++++++++++++++ > >>>>> 1 file changed, 17 insertions(+) > >>>>> > >>>>> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > >>>>> index 34fffa6d859d..3e2aaa6f48e5 100644 > >>>>> --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > >>>>> +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > >>>>> @@ -19,6 +19,8 @@ / { > >>>>> aliases { > >>>>> serial0 = &uart_AO; > >>>>> ethernet0 = ðmac; > >>>>> + rtc0 = &rtc0; > >>>>> + rtc1 = &vrtc; > >>>>> }; > >>>>> > >>>>> dioo2133: audio-amplifier-0 { > >>>>> @@ -477,6 +479,21 @@ hdmi_tx_tmds_out: endpoint { > >>>>> }; > >>>>> }; > >>>>> > >>>>> +&i2c3 { > >>>>> + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; > >>>>> + pinctrl-names = "default"; > >>>>> + status = "okay"; > >>>>> + > >>>>> + rtc0: rtc@51 { > >>>>> + reg = <0x51>; > >>>>> + compatible = "nxp,pcf8563"; > >>>>> + /* RTC INT */ > >>>>> + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; > >>>>> + interrupt-parent = <&gpio_intc>; > >>>>> + wakeup-source; > >>>>> + }; > >>>>> +}; > >>>> > >>>> There's still no pinctrl definition for the GPIO pin being used as the > >>>> IRQ. It looks like you discussed this with Martin and he pointed you in > >>>> the right direction in your v3 series, but I don't see it in this > >>>> patch. > >>>> > >>> Yes I had followed the approach suggested by Martin on previous email and IRC. > >>> but it really did not work out for me in the testing. > >>> > >>> rtc-pcf8563 driver does not handle such gpio configuration. > >>> so the rtc probe will fail if we add gpio pinctl to *pinctrl-0*. > >> > >> No need for multiple pinctrl-*, simple add a new pinctrl to the rtc node like: > >> > >> > >> @@ -18,6 +18,8 @@ > >> aliases { > >> serial0 = &uart_AO; > >> ethernet0 = ðmac; > >> + rtc0 = &rtc0; > >> + rtc1 = &vrtc; > >> }; > >> > >> chosen { > >> @@ -266,6 +268,17 @@ > >> status = "okay"; > >> }; > >> > >> +&ao_pinctrl { > >> + rtc_int_pins: rtc-int { > >> + mux { > >> + groups = "GPIOAO_7"; > >> + function = "gpio_aobus"; > >> + bias-disable; > >> + output-disable; > >> + }; > >> + }; > >> +}; > >> + > >> &cec_AO { > >> pinctrl-0 = <&cec_ao_a_h_pins>; > >> pinctrl-names = "default"; > >> @@ -391,6 +404,23 @@ > >> }; > >> }; > >> > >> +&i2c3 { > >> + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; > >> + pinctrl-names = "default"; > >> + status = "okay"; > >> + > >> + rtc0: rtc@51 { > >> + pinctrl-0 = <&rtc_int_pins>; > >> + pinctrl-names = "default"; > >> + reg = <0x51>; > >> + compatible = "nxp,pcf8563"; > >> + /* RTC INT */ > >> + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; > >> + interrupt-parent = <&gpio_intc>; > >> + wakeup-source; > >> + }; > >> +}; > >> + > >> &ir { > >> status = "okay"; > >> pinctrl-0 = <&remote_input_ao_pins>; > >> > >> DISCALIMER: not built or run tested > >> > >> Neil > >> > > > > I have built this and tested, but still this gpio pin > > Can you remove the "bias-disable" in rtc_int_pins and retry ? > > The default bias is pull-up, removing it may cause this. > > If it works, can you try "bias-pull-up" ? if it works, keep it and resend with my ack. > > Neil > Thanks, I was trying on the same lines, but I wanted to tested some stable kernel where suspend / resume was working, so I picked 5.7.x stable branch I observed the following opps (warning) when the device resumes after suspend, after that the device hangs [1] I am trying to make this work on 5.7.x tree so that we can test on 5.9.x /* RTC INT */ interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; After this small change the device comes back to command prompt. despite the WARNING. Problem is on u-boot (Harkernel) is work it breaks on u-boot (mainline). I observe after suspend /resume the IRQ count is increasing. # cat /proc/interrupts | grep rtc 28: 3 0 0 0 0 0 meson-gpio-irqchip 7 Level rtc-pcf8563 Best Regards -Anand [1] -------------- [root@archl-on2e ~]# rtcwake -d rtc0 -m mem -s 30 rtcwake: wakeup from "mem" using rtc0 at Wed Sep 2 11:30:09 2020 [ 285.299119] PM: suspend entry (deep) [ 285.299318] Filesystems sync: 0.000 seconds [ 285.503588] Freezing user space processes ... (elapsed 0.001 seconds) done. [ 285.506269] OOM killer disabled. [ 285.509474] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 285.518362] meson8b-dwmac ff3f0000.ethernet eth0: Link is Down [ 285.532810] sd 0:0:0:0: [sda] Synchronizing SCSI cache [ 285.660882] Disabling non-boot CPUs ... [ 285.661343] CPU1: shutdown [ 285.661762] psci: CPU1 killed (polled 0 ms) [ 285.667843] CPU2: shutdown [ 285.668575] psci: CPU2 killed (polled 0 ms) [ 285.674892] CPU3: shutdown [ 285.675389] psci: CPU3 killed (polled 0 ms) [ 285.681862] CPU4: shutdown [ 285.682202] psci: CPU4 killed (polled 0 ms) [ 285.688581] CPU5: shutdown [ 285.689035] psci: CPU5 killed (polled 0 ms) bl30 get wakeup sources! process command 00000006 bl30 enter suspend! Little core clk suspend rate 1896000000 Big core clk suspend rate 24000000 store restore gp0 pll suspend_counter: 1 Enter ddr suspend ddr suspend time: 17us alarm=0S process command 00000001 GPIOA_11/13 off cec ver:2018/04/19 CEC cfg:0x0000 WAKEUP GPIO cfg:0x00000000 use vddee new table! kern log_addr:0x00 cec T: 00 err: tx not finish flag cec reset Set cec pinmux:0x11 Set cec log_addr:0x10,ADDR0:10 use vddee new table! exit_reason:0x03 Enter ddr resume ddr resume time: 125us store restore gp0 pll cfg15 3b00000 cfg15 33b00000 Li[ 285.695732] Enabling non-boot CPUs ... [ 285.696098] Detected VIPT I-cache on CPU1 [ 285.696139] CPU1: Booted secondary processor 0x0000000001 [0x410fd034] [ 285.696523] CPU1 is up [ 285.707551] Detected VIPT I-cache on CPU2 [ 285.707592] arch_timer: CPU2: Trapping CNTVCT access [ 285.707605] CPU2: Booted secondary processor 0x0000000100 [0x410fd092] [ 285.708481] cpufreq: cpufreq_online: CPU2: Running at unlisted freq: 999999 KHz [ 285.729456] cpufreq: cpufreq_online: CPU2: Unlisted initial frequency changed to: 1000000 KHz [ 285.738099] CPU2 is up [ 285.740422] Detected VIPT I-cache on CPU3 [ 285.740444] arch_timer: CPU3: Trapping CNTVCT access [ 285.740452] CPU3: Booted secondary processor 0x0000000101 [0x410fd092] [ 285.740762] CPU3 is up [ 285.758076] Detected VIPT I-cache on CPU4 [ 285.758098] arch_timer: CPU4: Trapping CNTVCT access [ 285.758106] CPU4: Booted secondary processor 0x0000000102 [0x410fd092] [ 285.758443] CPU4 is up [ 285.775753] Detected VIPT I-cache on CPU5 [ 285.775775] arch_timer: CPU5: Trapping CNTVCT access [ 285.775783] CPU5: Booted secondary processor 0x0000000103 [0x410fd092] [ 285.776120] CPU5 is up [ 285.793825] ------------[ cut here ]------------ [ 285.797760] Unbalanced IRQ 28 wake disable [ 285.801830] WARNING: CPU: 3 PID: 420 at kernel/irq/manage.c:800 irq_set_irq_wake+0x154/0x19c [ 285.810180] Modules linked in: rfkill snd_soc_hdmi_codec dw_hdmi_i2s_audio dw_hdmi_cec meson_gxl meson_dw_hdmi meson_drm dw_hdmi axg_audio snd_soc_meson_axg_tdmout realtek cec dwmac_generic sclk_div clk_phase meson_canvas rtc_pcf8563 crct10dif_ce snd_soc_meson_axg_sound_card snd_soc_meson_g12a_tohdmitx snd_soc_meson_axg_frddr snd_soc_meson_codec_glue reset_meson_audio_arb snd_soc_meson_axg_fifo snd_soc_meson_card_utils meson_rng drm_kms_helper rc_odroid rng_core dwmac_meson8b mdio_mux_meson_g12a pwm_meson stmmac_platform meson_ir rc_core stmmac rtc_meson_vrtc mdio_xpcs snd_soc_meson_axg_tdm_interface snd_soc_meson_axg_tdm_formatter display_connector nvmem_meson_efuse drm ip_tables x_tables ipv6 nf_defrag_ipv6 [ 285.872542] CPU: 3 PID: 420 Comm: rtcwake Not tainted 5.7.19-00001-g28f8adf17e0e-dirty #1 [ 285.880646] Hardware name: Hardkernel ODROID-N2 (DT) [ 285.885564] pstate: 80000085 (Nzcv daIf -PAN -UAO) [ 285.890308] pc : irq_set_irq_wake+0x154/0x19c [ 285.894620] lr : irq_set_irq_wake+0x154/0x19c [ 285.898931] sp : ffff80001310bba0 [ 285.902209] x29: ffff80001310bba0 x28: ffff0000c84a0e00 [ 285.907469] x27: 0000000000000000 x26: 0000000000000000 [ 285.912731] x25: 0000000000000003 x24: 0000000000000000 [ 285.917992] x23: 0000000000000000 x22: ffff0000c84a0e00 [ 285.923253] x21: 00000000ffffffea x20: 000000000000001c [ 285.928514] x19: ffff0000f2771600 x18: 0000000000000030 [ 285.933775] x17: 0000000000000001 x16: 0000000000000003 [ 285.939037] x15: ffff0000c84a1270 x14: ffffffffffffffff [ 285.944298] x13: ffff80009310b8c7 x12: ffff80001310b8cf [ 285.949559] x11: ffff800011a91000 x10: ffff800011c8a6c8 [ 285.954820] x9 : 0000000000000000 x8 : 3220515249206465 [ 285.960082] x7 : 636e616c61626e55 x6 : 00000000000001c9 [ 285.965343] x5 : 0000000000000001 x4 : 0000000000000000 [ 285.970604] x3 : 0000000000000000 x2 : 0000000000000007 [ 285.975866] x1 : efc3665be56abd00 x0 : 0000000000000000 [ 285.981127] Call trace: [ 285.983545] irq_set_irq_wake+0x154/0x19c [ 285.987515] dev_pm_disarm_wake_irq+0x38/0x70 [ 285.991824] device_wakeup_disarm_wake_irqs+0x44/0xa0 [ 285.996826] dpm_resume_noirq+0x18/0x30 [ 286.000622] suspend_devices_and_enter+0x2bc/0x4ac [ 286.005365] pm_suspend+0x22c/0x2a0 [ 286.008815] state_store+0x8c/0x110 [ 286.012266] kobj_attr_store+0x18/0x30 [ 286.015974] sysfs_kf_write+0x44/0x54 [ 286.019595] kernfs_fop_write+0xfc/0x220 [ 286.023478] __vfs_write+0x1c/0x50 [ 286.026841] vfs_write+0xe4/0x1cc [ 286.030119] ksys_write+0x6c/0x100 [ 286.033482] __arm64_sys_write+0x1c/0x30 [ 286.037366] el0_svc_common.constprop.0+0x6c/0x170 [ 286.042108] do_el0_svc+0x24/0x90 [ 286.045386] el0_sync_handler+0x114/0x180 [ 286.049352] el0_sync+0x158/0x180 [ 286.052629] ---[ end trace cb15e81a7b13bf49 ]--- [ 286.058128] meson8b-dwmac ff3f0000.ethernet eth0: No Safety Features support found [ 286.064731] meson8b-dwmac ff3f0000.ethernet eth0: configuring for phy/rgmii link mode ttle core clk resume rate 1896000000 Big core clk resume rate 5000[ 286.083729] usb usb1: root hub lost power or was reset [ 286.083982] usb usb2: root hub lost power or was reset 0000 [ 286.338419] dwc3-meson-g12a ffe09000.usb: switching to Device Mode [ 286.442707] usb 2-1: reset SuperSpeed Gen 1 USB device number 2 using xhci-hcd [ 286.594290] usb 1-1: reset high-speed USB device number 2 using xhci-hcd [ 286.820893] usb 2-1.1: reset SuperSpeed Gen 1 USB device number 3 using xhci-hcd
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts index 34fffa6d859d..3e2aaa6f48e5 100644 --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts @@ -19,6 +19,8 @@ / { aliases { serial0 = &uart_AO; ethernet0 = ðmac; + rtc0 = &rtc0; + rtc1 = &vrtc; }; dioo2133: audio-amplifier-0 { @@ -477,6 +479,21 @@ hdmi_tx_tmds_out: endpoint { }; }; +&i2c3 { + pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>; + pinctrl-names = "default"; + status = "okay"; + + rtc0: rtc@51 { + reg = <0x51>; + compatible = "nxp,pcf8563"; + /* RTC INT */ + interrupts = <GPIOAO_7 IRQ_TYPE_LEVEL_LOW>; + interrupt-parent = <&gpio_intc>; + wakeup-source; + }; +}; + &ir { status = "okay"; pinctrl-0 = <&remote_input_ao_pins>;
Enable RTC PCF8563 node on Odroid-N2 SBC, In order to support the RTC wakealarm feature for suspend and resume. Also assign an alias to the pcf8563 to rtc0 and meson-vrtc to rtc1 timer device to prevent it being assigned to /dev/rtc0 which disto userspace tools assume is a clock device. Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Kevin Hilman <khilman@baylibre.com> Suggested-by: Christian Hewitt <christianshewitt@gmail.com> Signed-off-by: Anand Moon <linux.amoon@gmail.com> --- Changes v4 --Add gpio interrupt for GPIOAO.BIT7 as suggested by Neil. Changes v3 --Drop the INI GPIOAO.BIT7 pinctrl. --Added missing RTC alias so that rtc get assigned correcly, as suggested by Chris Hewitt. changes v2 --Fix the missing INT (GPIOAO.BIT7) pinctrl. --Fix the missing rtcwakeup. --Drop the clock not required clock property by the PCF8563 driver. --- .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)