[PATCH/RFC 0/5] arm64: dts: renesas: Break out common board support

Geert Uytterhoeven geert at linux-m68k.org
Wed Apr 26 04:11:55 EDT 2017

Hi Simon,

CC Vladimir (which I forgot to CC initially, sorry for that)

On Wed, Apr 26, 2017 at 10:06 AM, Simon Horman <horms at verge.net.au> wrote:
> On Fri, Apr 21, 2017 at 02:55:16PM +0200, Geert Uytterhoeven wrote:
>> The Renesas Salvator-X and ULCB development board can be equipped with
>> either an R-Car H3 or M3-W SiP, which are pin-compatible.  All boards
>> use separate DTBs, but currently there's no sharing of board-specific
>> devices in DTS.
>> This series reduces duplication by extracting common board support into
>> their own .dtsi files.  As the level of support varies across boards and
>> SoCs, this requires the addition of a few external clocks and
>> placeholder devices on R-Car M3-W, so the common board support DTS can
>> refer to them.
>>   - Patches 1 and 2 add the external audio and PCIe bus clocks on R-Car
>>     M3-W, which are present in r8a7795.dtsi, and used in
>>     r8a7795-salvator-x.dts,
>>   - RFC patch 3 adds placeholders for devices that are not yet supported
>>     and/or tested on R-Car M3-W, but used on R-Car H3,
>>   - RFC patch 4 extracts common Salvator-X board support,
>>   - RFC patch 5 extracts common ULCB board support.
>> For R-Car H3 based boards, there are no functional changes.
>> For R-Car M3-W based boards, some new devices are now described in DT.
>> Dependencies:
>>   - renesas-devel-20170420-v4.11-rc7,
>>   - Patches 1 and 2 can be applied as-is,
>>   - Patches 4 and 5 depend on "[PATCH 0/8] arm64: dts: renesas: Break
>>     out R-Car H3 and M3-W SiP"
>>     (http://www.spinics.net/lists/devicetree/msg173820.html).
>> DTB changes have been inspected using scripts/dtc/dtx_diff.
>> This has been tested on Salvator-X (both H3 and M3-W).
>> This has not been tested on H3ULCB and M3ULCB due to lack of hardware.
>> Thanks for your comments!
> Thanks for tackling this important problem. I have looked over the changes
> and they seem nice to me. I would, however, be more comfortable applying
> them if they were rested on the ULCB boards.


I've pushed a branch for testing to topic/rcar3-dtsi-sharing in




Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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