DT: newbie questions

Chris Moore moore at free.fr
Mon May 15 21:18:39 PDT 2017

Le 15/05/2017 à 11:28, Chris Moore a écrit :
> Hi,
> Sorry for these newbie questions :(
> I would like to add support for the cheap Chinese KI PLUS S905 boxes 
> which seem very popular.
> They are re-branded (or cloned) by several different vendors.
> In particular the most serious seem to be:-
> VideoStrong (http://www.videostrong.com/product.asp?sid=257)
> Acemax 
> (http://www.acemax.net.cn/droid-world/droid-box/hybrid-android-dvb-t2-dvb-s2/kii-pro-ki-plus-s2-t2-combo-149.html#.WRls_GjyiUk)
> I actually have an Xtreamer mxV (http://www.xtreamer.net/mxv) which 
> seems to be an exact clone.
> My first question is what to put in the compatible line.
> I could put:
> a) compatible = "videostrong,kiplus", "acemax,kiplus", "xtreamer,mxv", 
> "amlogic,meson-gxbb";
> but there are many other KI PLUS vendors so I could maybe omit the 
> vendor:
> b) compatible = "kiplus", "xtreamer,mxv", "amlogic,meson-gxbb";
> but this poses the problem of what to put in amlogic.txt which seems 
> to require a vendor.

Another solution to the multi-vendor problem could be to create a 
pseudo-vendor "generic" (or similar) and then have:
c) compatible = "generic,kiplus", "xtreamer,mxv", "amlogic,meson-gxbb";
Would this be acceptable?

> My second question is what to base my patch on:
> Should it be v4.12/dt64 in Kevin's linux-amlogic.git?
> My third question concerns the SDIO WiFi.
> The WiFi chip seems to vary between boards.
> My board has a Realtek RTL8189ETV.
> I note that its (unfortunately out of tree) driver is loaded even if 
> the DT specifies a Broadcom chip.
> Is it really necessary to specify the chip in the DT?
> (It seems that the SDIO, like the PCI and USB buses, recognizes 
> connected devices by their IDs.)
> My final question is how to submit my patch.
> Should I send an RFC to this list for approval before possibly 
> spamming others?
> I thank you in advance for your replies and your tolerance.
> Cheers,
> Chris Moore
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