[PATCH v4 1/2] arm64: dts: meson-g12b-odroid-n2: Enable RTC controller node
Anand Moon
linux.amoon at gmail.com
Wed Sep 2 08:38:48 EDT 2020
hi Neil,
On Wed, 2 Sep 2020 at 12:48, Neil Armstrong <narmstrong at 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 at 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 at baylibre.com> wrote:
> >>>>
> >>>> Anand Moon <linux.amoon at 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 at baylibre.com>
> >>>>> Cc: Kevin Hilman <khilman at baylibre.com>
> >>>>> Suggested-by: Christian Hewitt <christianshewitt at gmail.com>
> >>>>> Signed-off-by: Anand Moon <linux.amoon at 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 at 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 at 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 at 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
More information about the linux-arm-kernel
mailing list