Official RTC Shield for Odroid C2

blackride · September 15, 2016 at 5:08 PM

Hi.
I have Official RTC Shield for Odroid C2.
Support added module PCF8563 in kernel for image "LibreELEC 7.0.1" (16.1 28.May.2016) and higher.

Can add a module to the LibreELEC 7.90.0XX (8.00)? :s

Thank you!

blackride · September 17, 2016 at 9:11 AM

Why developers pass this problem???

**gdachs** · September 17, 2016 at 11:03 PM

Quote from blackride

Why developers pass this problem???

Maybe because there is just no need for it?

Gerald

blackride · September 18, 2016 at 5:56 AM

Quote from gdachs

Maybe because there is just no need for it?

Gerald

Why is there no need?
The module already exists. And what is the complexity of adding it to the official image?

Could you please add to the official release? :s

GDPR-1 · September 18, 2016 at 7:06 AM

You're posting in the community build section which is maintained by wrxtasy and as far as I know wrxtasy doesn't do 7.9 builds yet.

I'm guessing it wouldn't be hard to include the module since it's just a change in the kernel config.

blackride · September 28, 2016 at 6:12 AM

Quote from Raybuntu

I'm guessing it wouldn't be hard to include the module since it's just a change in the kernel config.

The news on site libreelec.tv says that the HK RTС Shield support has been added:

Add support for HK RTC shield on Odroid C2

I yesterday installed img LibreELEC-Odroid_C2.aarch64-7.90.006.img.gz

But HK Official RTC Shield is not detected:

Code

dmesg | grep rtc
[ 2.662196] drivers/rtc/hctosys.c: [color=#FF0000]unable to open rtc device (rtc0)[/color]

Code

lsmod
Module Size Used by
rt2800usb 21137 0
rt2800lib 73748 1 rt2800usb
rt2x00usb 9180 1 rt2800usb
rt2x00lib 37814 3 rt2x00usb,rt2800lib,rt2800usb
mac80211 418477 3 rt2x00lib,rt2x00usb,rt2800lib
cfg80211 438289 2 mac80211,rt2x00lib
8021q 18959 0
ir_jvc_decoder 1583 0
ir_lirc_codec 4380 3
lirc_dev 8568 1 ir_lirc_codec
ir_mce_kbd_decoder 3092 0
ir_sanyo_decoder 1563 0
ir_sony_decoder 1601 0
ir_rc6_decoder 1927 0
ir_rc5_decoder 1527 0
ir_nec_decoder 1719 0
meson_ir 2967 0
autofs4 25155 0
fbcon 37361 0
bitblit 4492 1 fbcon
softcursor 1184 1 bitblit
font 7279 1 fbcon

Display More

This means that the module rtc_pcf8563 is not loaded.

I think one that the developers do not speak the truth?
OR
Support add HK RTC Shield in release 7.90.007?

**gdachs** · September 28, 2016 at 3:12 PM

Quote from blackride

Why is there no need?

The LibreELEC developers may not need the time from the RTC, because all their devices are connected to the internet and the time they get from there is good enough.

Gerald

blackride · September 28, 2016 at 4:18 PM

Quote from gdachs

The LibreELEC developers may not need the time from the RTC, because all their devices are connected to the internet and the time they get from there is good enough.

Gerald

Why you are responsible for all developers?
I did not ask you to respond. OK?

**Klojum** · September 28, 2016 at 4:43 PM Official Post

Quote from blackride

Why is there no need?
The module already exists. And what is the complexity of adding it to the official image?

Could you please add to the official release?

In general, just because there is some hardware extension for the Odroid computer, does not mean LibreELEC is obligated to support it. Mind you, LibreELEC is not commercially linked to Odroid, nor are we Odroid employees.

"What is the complexity of adding it to the official image?"
Clearly you don't have any programming experience. If every problem could be solved in 15 seconds, LibreELEC would be so incredibly stable by now. Each problem has its own challenges. Some are easy to solve, others are not.

Moreover, LibreELEC is currently still in the Alpha stages with its Krypton release. That means: things break, or might not work correctly even though functionality is added.

"I did not ask you to respond. OK?"
Don't start being a smartass. There is little patience here with such people.

blackride · September 28, 2016 at 4:54 PM

I make

Code

# modprobe rtc-pcf8563

and

Code

# lsmod
Module                  Size  Used by
rtc_pcf8563             3567  0
rt2800usb              21137  0
rt2800lib              73748  1 rt2800usb
rt2x00usb               9180  1 rt2800usb
rt2x00lib              37814  3 rt2x00usb,rt2800lib,rt2800usb
mac80211              418477  3 rt2x00lib,rt2x00usb,rt2800lib
cfg80211              438289  2 mac80211,rt2x00lib
8021q                  18959  0
ir_lirc_codec           4380  3
lirc_dev                8568  1 ir_lirc_codec
ir_mce_kbd_decoder      3092  0
ir_sanyo_decoder        1563  0
ir_sony_decoder         1601  0
ir_rc6_decoder          1927  0
ir_rc5_decoder          1527  0
ir_nec_decoder          1719  0
ir_jvc_decoder          1583  0
meson_ir                2967  0
autofs4                25155  0
fbcon                  37361  0
bitblit                 4492  1 fbcon
softcursor              1184  1 bitblit
font                    7279  1 fbcon

Display More

But comand

Code

# dmesg | grep rtc
[    2.692209] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)

don't see device.

Any ideas?

GDPR-1 · September 28, 2016 at 7:45 PM

Sorry blackride but this subforum is for community builds by wrxtasy and rtc shield is supported in those builds.

Please watch your tone blackride. We all want to stay polite here!? Gerald was just trying to help you. We all do this for free in our free time and there is no need to blame someone.

There are a lot of changes going on for official LE on Amlogic devices (Odroid C2 included). We have a brand new kernel and not everything is up to shape right now. Like Klojum said we are still in alpha stage. Please be patient.

**gdachs** · September 28, 2016 at 10:10 PM

Quote from blackride

Why you are responsible for all developers?
I did not ask you to respond. OK?

What makes you think that I feel responsible for all developers? My English is not the best, but "may not need" should explain you that I never thought I am responsible for them.
As there is code from me in LibreELEC for the Odroid C2 and I know the LibreELEC developers very good, I still think that my post is true, but that doesn't make me responsible for them.

It is true that you didn't ask me to respond, but you didn't ask anyone else to respond. So does this mean nobody was allowed to respond? But then your post is senseless.

Gerald

**chewitt** · September 29, 2016 at 7:45 AM Official Post

LibreELEC.tv/linux.aarch64.conf at master · LibreELEC/LibreELEC.tv · GitHub

support for the kernel module is compiled in. If it needs more than that, someone will need to tell us what.

**wrxtasy** · October 3, 2016 at 11:39 AM

I've stumbled across the cause of the issue I believe today:

HardKernel's C2 Device Tree for the i2c connected PFC8563 RTC:
linux/meson64_odroidc2.dts at odroidc2-3.14.y · hardkernel/linux · GitHub

And what is being used in the LibreELEC master Kernel:
linux-amlogic/meson64_odroidc2.dts at amlogic-3.14.y · LibreELEC/linux-amlogic · GitHub

blackride · October 4, 2016 at 4:33 AM

Quote from wrxtasy

I've stumbled across the cause of the issue I believe today:

wrxtasy, thank you very much!

But how to remake comand for our boot.ini?

Code

fdtput -t s /path/to/your/dtb/meson64_odroidc2.dtb /i2c@c1108500/pcf8563@51 status "okay"

GDPR-1 · October 4, 2016 at 6:42 AM

Sorry for posting so late. The whole DTS entry is missing:
linux-amlogic/meson64_odroidc2.dts at amlogic-3.14.y · LibreELEC/linux-amlogic · GitHub

Code

&i2c_a {
    status = "okay";


    /* Hardkernel I2C RTC */
    pcf8563: pcf8563@51    {
        status = "disabled";
        compatible = "nxp,pcf8563";
        reg = <0x51>;
        #clock-cells = <0>;
    };
};

Display More

I'll try to build master with this dts entry and test it with my rtc shield. If it works I'll prepare a patch.

GDPR-1 · October 4, 2016 at 9:57 AM

I've tested and with the fixed Device Tree entry it's working.
Don't know the reason why status is disabled. I'll try to come up with a boot.ini option.

blackride · October 4, 2016 at 2:40 PM

Quote from Raybuntu

I've tested and with the fixed Device Tree entry it's working.

It works?
Do I understand correctly that it is necessary to add this line

Code

fdtput -t s meson64_odroidc2.dtb /i2c@c1108500/pcf8563@51 status "okay"

in file "boot.ini" ?

And it should work in the next release LE?