Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-26 Thread Tony Lindgren
* Gupta, Pekon pe...@ti.com [140618 01:52]: Hi, From: Jason Kridner [mailto:jkrid...@gmail.com] On Tue, Jun 17, 2014 at 3:11 AM, Gupta, Pekon pe...@ti.com wrote: From: Jason Kridner [...] * The devicetree sources, including the primary boot .dts files, will eventually be removed from

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-26 Thread Tom Rini
On 06/26/2014 03:50 AM, Tony Lindgren wrote: * Gupta, Pekon pe...@ti.com [140618 01:52]: Hi, From: Jason Kridner [mailto:jkrid...@gmail.com] On Tue, Jun 17, 2014 at 3:11 AM, Gupta, Pekon pe...@ti.com wrote: From: Jason Kridner [...] * The devicetree sources, including the primary boot .dts

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-26 Thread Jason Kridner
On Thu, Jun 26, 2014 at 9:06 AM, Tom Rini tr...@ti.com wrote: On 06/26/2014 03:50 AM, Tony Lindgren wrote: * Gupta, Pekon pe...@ti.com [140618 01:52]: Hi, From: Jason Kridner [mailto:jkrid...@gmail.com] On Tue, Jun 17, 2014 at 3:11 AM, Gupta, Pekon pe...@ti.com wrote: From: Jason Kridner

RE: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-18 Thread Gupta, Pekon
Hi, From: Jason Kridner [mailto:jkrid...@gmail.com] On Tue, Jun 17, 2014 at 3:11 AM, Gupta, Pekon pe...@ti.com wrote: From: Jason Kridner [...] * The devicetree sources, including the primary boot .dts files, will eventually be removed from the kernel source tree. I'm not too sure if and when

RE: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Gupta, Pekon
Hi Jason, From: Jason Kridner Adding devicetree and linux-arm-kernel lists based on feedback on IRC... On Tue, Jun 10, 2014 at 12:46 PM, Jason Kridner jkrid...@gmail.com wrote: I'd like to discuss moving our current library of cape devicetree overlay sources into a single tree, including the

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Russell King - ARM Linux
On Mon, Jun 16, 2014 at 09:22:50AM -0400, Jason Kridner wrote: Adding devicetree and linux-arm-kernel lists based on feedback on IRC... On Tue, Jun 10, 2014 at 12:46 PM, Jason Kridner jkrid...@gmail.com wrote: I'd like to discuss moving our current library of cape devicetree overlay

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Tom Rini
On 06/17/2014 05:09 AM, Russell King - ARM Linux wrote: On Mon, Jun 16, 2014 at 09:22:50AM -0400, Jason Kridner wrote: Adding devicetree and linux-arm-kernel lists based on feedback on IRC... On Tue, Jun 10, 2014 at 12:46 PM, Jason Kridner jkrid...@gmail.com wrote: I'd like to discuss moving

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Russell King - ARM Linux
On Tue, Jun 17, 2014 at 08:37:09AM -0400, Tom Rini wrote: On 06/17/2014 05:09 AM, Russell King - ARM Linux wrote: A good way that this could have been done is to put an I2C EEPROM on each cape, and have that store the DT fragment. The boot loader could have then read that from each cape,

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Matt Porter
On Tue, Jun 17, 2014 at 10:09:31AM +0100, Russell King wrote: On Mon, Jun 16, 2014 at 09:22:50AM -0400, Jason Kridner wrote: Adding devicetree and linux-arm-kernel lists based on feedback on IRC... On Tue, Jun 10, 2014 at 12:46 PM, Jason Kridner jkrid...@gmail.com wrote: I'd like to

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Russell King - ARM Linux
On Tue, Jun 17, 2014 at 08:58:31AM -0400, Matt Porter wrote: On Tue, Jun 17, 2014 at 10:09:31AM +0100, Russell King wrote: Why should kernel developers go to the extent of adding support for DT modification at runtime when the platform you want this for doesn't even support hotplugging of

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Matt Porter
On Tue, Jun 17, 2014 at 02:15:22PM +0100, Russell King wrote: On Tue, Jun 17, 2014 at 08:58:31AM -0400, Matt Porter wrote: On Tue, Jun 17, 2014 at 10:09:31AM +0100, Russell King wrote: Why should kernel developers go to the extent of adding support for DT modification at runtime when the

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Pantelis Antoniou
Hi Russell, CCing gcl. On Jun 17, 2014, at 4:15 PM, Russell King - ARM Linux wrote: On Tue, Jun 17, 2014 at 08:58:31AM -0400, Matt Porter wrote: On Tue, Jun 17, 2014 at 10:09:31AM +0100, Russell King wrote: Why should kernel developers go to the extent of adding support for DT modification

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Vladimir Pantelic
On 06/17/2014 11:09 AM, Russell King - ARM Linux wrote: Here's the most obvious question in the world on this topic. Are capes hot-pluggable? capes as in Beaglebone capes might not be due to the mechanical constraints you listed. capes as a concept of pluggable hardware might well be.

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Grant Likely
On Tue, 17 Jun 2014 10:09:31 +0100, Russell King - ARM Linux li...@arm.linux.org.uk wrote: On Mon, Jun 16, 2014 at 09:22:50AM -0400, Jason Kridner wrote: Adding devicetree and linux-arm-kernel lists based on feedback on IRC... On Tue, Jun 10, 2014 at 12:46 PM, Jason Kridner

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Iain Paton
On 17/06/14 10:09, Russell King - ARM Linux wrote: Why should kernel developers go to the extent of adding support for DT modification at runtime when the platform you want this for doesn't even support hotplugging of these capes? I'm not convinced you should, but Grant Likely seemed to be

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Tom Rini
On 06/17/2014 08:56 AM, Russell King - ARM Linux wrote: On Tue, Jun 17, 2014 at 08:37:09AM -0400, Tom Rini wrote: On 06/17/2014 05:09 AM, Russell King - ARM Linux wrote: A good way that this could have been done is to put an I2C EEPROM on each cape, and have that store the DT fragment. The

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Russell King - ARM Linux
On Tue, Jun 17, 2014 at 04:32:11PM +0300, Pantelis Antoniou wrote: The complexity is absolutely required, and it has nothing to do with beaglebone capes. The fact of the matter is that reconfigurable hardware is here, on shipping system, and we, as the linux kernel community have to make

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Jason Kridner
On Tue, Jun 17, 2014 at 12:01 PM, Russell King - ARM Linux li...@arm.linux.org.uk wrote: On Tue, Jun 17, 2014 at 04:32:11PM +0300, Pantelis Antoniou wrote: The complexity is absolutely required, and it has nothing to do with beaglebone capes. The fact of the matter is that reconfigurable

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Jason Kridner
On Tue, Jun 17, 2014 at 3:11 AM, Gupta, Pekon pe...@ti.com wrote: Hi Jason, From: Jason Kridner Adding devicetree and linux-arm-kernel lists based on feedback on IRC... On Tue, Jun 10, 2014 at 12:46 PM, Jason Kridner jkrid...@gmail.com wrote: I'd like to discuss moving our current library of

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Pantelis Antoniou
Hi Russell, On Jun 17, 2014, at 7:01 PM, Russell King - ARM Linux wrote: On Tue, Jun 17, 2014 at 04:32:11PM +0300, Pantelis Antoniou wrote: The complexity is absolutely required, and it has nothing to do with beaglebone capes. The fact of the matter is that reconfigurable hardware is here,

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Russell King - ARM Linux
On Tue, Jun 17, 2014 at 07:59:21PM +0300, Pantelis Antoniou wrote: That case might already work on FPGA people's trees. I know Altera for sure uses overlays, and some xilinx guys popped up on past discussions. Their vendor trees probably use an older revision of the patches. BTW, there is

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Pantelis Antoniou
Hi Russell, On Jun 17, 2014, at 8:05 PM, Russell King - ARM Linux wrote: On Tue, Jun 17, 2014 at 07:59:21PM +0300, Pantelis Antoniou wrote: That case might already work on FPGA people's trees. I know Altera for sure uses overlays, and some xilinx guys popped up on past discussions. Their

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Russell King - ARM Linux
On Tue, Jun 17, 2014 at 08:10:46PM +0300, Pantelis Antoniou wrote: Hi Russell, On Jun 17, 2014, at 8:05 PM, Russell King - ARM Linux wrote: DRM is not hotpluggable in any shape or form, and David Airlie has indicated that he does strongly opposes moving it in that direction. DRM

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-17 Thread Pantelis Antoniou
Hi Rusell, On Jun 17, 2014, at 8:41 PM, Russell King - ARM Linux wrote: On Tue, Jun 17, 2014 at 08:10:46PM +0300, Pantelis Antoniou wrote: Hi Russell, On Jun 17, 2014, at 8:05 PM, Russell King - ARM Linux wrote: DRM is not hotpluggable in any shape or form, and David Airlie has indicated

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-16 Thread Jason Kridner
Adding devicetree and linux-arm-kernel lists based on feedback on IRC... On Tue, Jun 10, 2014 at 12:46 PM, Jason Kridner jkrid...@gmail.com wrote: I'd like to discuss moving our current library of cape devicetree overlay sources into a single tree, including the boot .dtb files for

Re: Unifying cape overlays into boot .dtb for BeagleBoard.org boards

2014-06-10 Thread Jason Kridner
Adding devicetree and linux-arm-kernel lists based on feedback on IRC... On Tue, Jun 10, 2014 at 12:46 PM, Jason Kridner jkrid...@gmail.com wrote: I'd like to discuss moving our current library of cape devicetree overlay sources into a single tree, including the boot .dtb files for