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by grp62
Wed Nov 18, 2015 10:42 am
Forum: Device Tree
Topic: Overlay for on/off push-button controller.
Replies: 40
Views: 20253

Re: Overlay for on/off push-button controller.

Hi all, I tried to use the gpio-poweroff-overlay (active low) on my custom board. The board boots and shutdown quickly. Just for info i only added the code below in my the device-tree. power_ctrl: power_ctrl { compatible = "gpio-poweroff"; gpios = <&gpio 26 0>; force; }; The gpio assigned to KILL is...
by grp62
Wed Nov 18, 2015 10:12 am
Forum: Compute Module
Topic: Jessie & CM
Replies: 4
Views: 1227

Re: Jessie & CM

Hi,
I reworked my device tree for the lastest kernel 4.1 and everything works fine now.
Thanks for your support.
Greg
by grp62
Mon Nov 16, 2015 9:35 am
Forum: Compute Module
Topic: Jessie & CM
Replies: 4
Views: 1227

Re: Jessie & CM

It is a customized kernel device tree blob.
Greg
by grp62
Mon Nov 16, 2015 8:48 am
Forum: Compute Module
Topic: Jessie & CM
Replies: 4
Views: 1227

Jessie & CM

Hi All, I try to boot a Jessie image (noX extension as the image available on the RPi website is too big for the CM) on a custom board based on CM. When i try to boot my linux kernel with a custom dt blob (specified with the device_tree option in config.txt), it hangs with a nice rainbow screen. If ...
by grp62
Mon Jun 08, 2015 1:40 pm
Forum: Raspbian
Topic: raspbian: kernel update
Replies: 6
Views: 1160

raspbian: kernel update

Hi All,
According to my knowledge the only way to update the firmware & the kernel is to execute "rpi-update" from the CLI.
Am i right or is there other cases where the kernel can be updated 'automatically' i mean without user intervention.
Greg
by grp62
Wed Mar 18, 2015 12:37 pm
Forum: Compute Module
Topic: drive a gpio to power_off a CM
Replies: 0
Views: 483

drive a gpio to power_off a CM

Hi all, In my hw design i have the possibility to shutdown the power supply from a GPIO. The question is where to add the code in the BSP to do that cleanly ? On the other hand i'd like to know if there is a documentation available about the mechanism related to the bcm2708_power_off function. Greg
by grp62
Thu Mar 12, 2015 2:24 pm
Forum: Compute Module
Topic: NOOBS & CM
Replies: 15
Views: 2926

Re: NOOBS & CM

Safe mode in NOOBS supported or not ?
That is the question ;)
by grp62
Thu Mar 12, 2015 1:10 pm
Forum: Compute Module
Topic: NOOBS & CM
Replies: 15
Views: 2926

Re: NOOBS & CM

I had a look to the code and i didn't see the safemode option that's why i asked the question.
Did i miss something ?
SAFE mode is mentioned in the Documentation.
by grp62
Thu Mar 12, 2015 11:14 am
Forum: Compute Module
Topic: NOOBS & CM
Replies: 15
Views: 2926

Re: NOOBS & CM

Thanks for your reply.
I was wondering if the safe mode (rescueshell) is always supported in the last version of NOOBS ?
by grp62
Thu Mar 12, 2015 10:03 am
Forum: Compute Module
Topic: NOOBS & CM
Replies: 15
Views: 2926

Re: NOOBS & CM

About the blinking, i think it came from my HDMI monitor. Now NOOBS works on my carrier board. By the way is there a way to change the GPIO assignment to trigger the recovery & safe mode. On the other hand i'd like to know if there is way to build & use NOOBS from a console through /dev/ttyAMA0 for ...
by grp62
Mon Mar 09, 2015 8:55 pm
Forum: Compute Module
Topic: NOOBS & CM
Replies: 15
Views: 2926

Re: NOOBS & CM

I re-built NOOBS from scratch by making a kernel & firmware update and it works well except that my HDMI display blinks (blue screen, console, blue screen, console) ???
Just for info the CM is populated on a custom carrier board.
Greg
by grp62
Mon Mar 09, 2015 10:35 am
Forum: Compute Module
Topic: NOOBS & CM
Replies: 15
Views: 2926

Re: NOOBS & CM

Thanks for your reply.
It doesn't work with the lastest release of NOOBS (1.4.0)
Even when i try to rebuild NOOBS from source code !!
Endless loop with the following message "Waiting for SD card to be ready" !!!
Greg
by grp62
Fri Mar 06, 2015 2:20 pm
Forum: Compute Module
Topic: NOOBS & CM
Replies: 15
Views: 2926

NOOBS & CM

Hi all,
I am wondering if NOOBS runs on CM ?
I ask the question because i did a test and i got the following message: mmc0: error -110 whilst initialising SD card (eMMC on CM)
Sometimes the menu appears with the following message Waiting for SD card to be ready and the "blue" display blinks.
Greg
by grp62
Sat Dec 20, 2014 2:47 pm
Forum: Compute Module
Topic: Compute Module Ethernet MAC Address
Replies: 10
Views: 5539

Re: Compute Module Ethernet MAC Address

By the way, what is the way to remove the default mac address initialized by the firmware ?
Let's assume for instance that i want to use the MAC address stored into the attached eeprom of the LAN9514 ?
BR,
Greg
by grp62
Fri Dec 19, 2014 4:22 pm
Forum: Compute Module
Topic: rpiboot
Replies: 3
Views: 926

Re: rpiboot

Indeed, it works with the lastest revision.
Thanks a lot.
Greg
by grp62
Fri Dec 19, 2014 3:04 pm
Forum: Compute Module
Topic: rpiboot
Replies: 3
Views: 926

rpiboot

Hi, I noticed that the GPIO5 seems to be driven low during the rpiboot process (input pull up by default). Unfortunately, this I/O in our case can shutoff the power supply. So when after loading the msd.bin & usbbootcode.bin, the power supply is cut off and consequently i can't see the eMMC partitio...
by grp62
Wed Dec 17, 2014 11:17 am
Forum: Compute Module
Topic: BSP support for product based on CM
Replies: 1
Views: 755

BSP support for product based on CM

Hi,
I'd like to know if it's possible to push a patch to git://github.com/raspberrypi/linux.git for a custom product based on CM.
If yes, what is the way to do ?
If no, what do you suggest ?
BR,
Greg
by grp62
Wed Oct 01, 2014 8:41 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: About SPI0 chip select
Replies: 1
Views: 639

About SPI0 chip select

Hi all,
I noticed in the linux bcm2708-spi driver that the number of chipselect was initialized to 3.
In the datasheet SPI0_CE0_N & SPI0_CE1_N are only available on the GPIO.
Is it really the case ?
Is there a way to use SPI0_CE2_N ?
Greg
by grp62
Thu Sep 25, 2014 12:11 pm
Forum: General discussion
Topic: Linux driver for SD1 interface
Replies: 2
Views: 781

Re: Linux driver for SD1 interface

Hi mimi,
Thanks for your feedback.
Greg
by grp62
Thu Sep 25, 2014 11:19 am
Forum: General discussion
Topic: Linux driver for auxiliary peripherals
Replies: 2
Views: 973

Re: Linux driver for auxiliary peripherals

Hi joan,
Thanks for your feedback.
Greg
by grp62
Thu Sep 25, 2014 10:19 am
Forum: General discussion
Topic: Linux driver for SD1 interface
Replies: 2
Views: 781

Linux driver for SD1 interface

Hi all,
I was wondering if the SD1 interface (GPIO[22..27] = ALT3) was supported in the linux kernel ?
Greg
by grp62
Thu Sep 25, 2014 9:35 am
Forum: General discussion
Topic: Linux driver for auxiliary peripherals
Replies: 2
Views: 973

Linux driver for auxiliary peripherals

Hi all,
I was wondering if the auxiliary devices (SPI1, SPI2, UART1 aka miniUART) were supported in the linux kernel ?
Greg
by grp62
Mon Aug 18, 2014 7:36 am
Forum: Compute Module
Topic: Compute module boot issue (solved)
Replies: 17
Views: 4494

Re: Compute module boot issue

Gordon,
Where can i find some information about the modification on the default pulls / alternate settings.
Greg
by grp62
Thu Aug 14, 2014 7:23 am
Forum: Compute Module
Topic: Compute module boot issue (solved)
Replies: 17
Views: 4494

Re: Compute module boot issue

Gordon, Thanks for your feedback. But why after issuing an rpi-update then our board boots normally everytime ? The RUN pin doesn't float (CM schematic) and all the GPIOs have internal pull resistors (except gpio28/29 and gpio44/45 but we have populated PD resistors on our carrier board) I will also...
by grp62
Wed Aug 13, 2014 5:08 pm
Forum: Compute Module
Topic: Compute module won't boot
Replies: 6
Views: 2149

Re: Compute module won't boot

Hi florent,
Did you check the power sequencing ?
What image did you flash on the CM ?
Do you have a console available on a serial port and/or HDMI output ?
Greg

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