[RFC PATCH 0/1] Categorize ARM dts directory

[Rob Herring]

On Tue, May 2, 2023 at 3:15 AM Arnd Bergmann <arnd at arndb.de> wrote:
>
> On Tue, Apr 25, 2023, at 17:57, Rob Herring wrote:
> > On Tue, Apr 25, 2023 at 2:28 AM Geert Uytterhoeven <geert at linux-m68k.org> wrote:
> >
> >> Does your script also cater for .dts files not matching any pattern,
> >> but including a .dtsi file that does match a pattern?
> >
> > I assume I built everything after moving, but maybe not...
> >
> > That's all just "details". First, we need agreement on a) moving
> > things to subdirs and b) doing it 1-by-1 or all at once. So far we've
> > been stuck on a) for being 'too much churn'.
>
> Sorry for missing most of the discussion last week. The script sounds
> fine to me, the only reason I didn't want to do this in the past is that
> we had the plan to move platforms out of the kernel tree to an external
> repository and I wanted to do this platform at a time and also only move
> each one once. I don't think that is going to happen anytime soon now,
> so let's just do your script.
>
> Can you send me the script and/or a pull request of the resulting
> tree based on my soc/dt branch? Everything is merged upstream,
> and I think git-merge would handle the remaining merges with any
> other changes in mainline.

I've dusted off my script and made a branch[1] with the result.
There's just a couple of fixes needed after the script is run (see the
top commit). The cross arch includes are all fixed up by the script.
dtbs_install maintains a flat install. I compared the number of .dtbs
before and after to check the script.

I think the only issue remaining is finalizing the mapping of
platforms to subdirs. What I have currently is a mixture of SoC
families and vendors. The most notable are all the Freescale/NXP
platforms, pxa, socfpga, and stm32. It's not consistent with arm64
either. Once that's finalized, I still need to go update MAINTAINERS.

Here's the current mapping:

vendor_map = {
    'alphascale' : 'alphascale',
    'alpine' : 'alpine',
    'artpec' : 'axis',
    'axm' : 'lsi',
    'cx9' : 'cnxt',
    'ecx' : 'calxeda',
    'highbank' : 'calxeda',
    'ep7' : 'cirrus',
    'mxs': 'mxs',
    'imx23': 'mxs',
    'imx28': 'mxs',
    'sun' : 'allwinner',
    'imx': 'imx',
    'e6' : 'imx',
    'e7' : 'imx',
    'mba6' : 'imx',
    'ls': 'fsl',
    'vf': 'fsl',
    'qcom': 'qcom',
    'am3' : 'ti',
    'am4' : 'ti',
    'am5' : 'ti',
    'dra' : 'ti',
    'keystone' : 'ti',
    'omap' : 'ti',
    'compulab' : 'ti',
    'logicpd' : 'ti',
    'elpida' : 'ti',
    'motorola' : 'ti',
    'twl' : 'ti',
    'da' : 'ti',
    'dm' : 'ti',
    'nspire' : 'nspire',
    'armada' : 'marvell',
    'dove' : 'marvell',
    'kirkwood' : 'marvell',
    'orion' : 'marvell',
    'mvebu' : 'marvell',
    'mmp' : 'marvell',
    'berlin' : 'berlin',
    'pxa2' : 'pxa',
    'pxa3' : 'pxa',
    'pxa' : 'marvell',
    'arm-' : 'arm',
    'integ' : 'arm',
    'mps' : 'arm',
    've' : 'arm',
    'aspeed' : 'aspeed',
    'ast2' : 'aspeed',
    'facebook' : 'aspeed',
    'ibm' : 'aspeed',
    'openbmc' : 'aspeed',
    'en7' : 'airoha',
    'at91' : 'microchip',
    'sama' : 'microchip',
    'sam9' : 'microchip',
    'usb_' : 'microchip',
    'tny_' : 'microchip',
    'mpa1600' : 'microchip',
    'animeo_ip' : 'microchip',
    'aks-cdu' : 'microchip',
    'ethernut5' : 'microchip',
    'evk-pro3' : 'microchip',
    'pm9g45' : 'microchip',
    'ge86' : 'microchip',
    'bcm' : 'brcm',
    'exynos' : 'samsung',
    's3c' : 'samsung',
    's5p' : 'samsung',
    'gemini' : 'gemini',
    'hi3' : 'hisilicon',
    'hip' : 'hisilicon',
    'hisi' : 'hisilicon',
    'sd5' : 'hisilicon',
    'hpe' : 'hpe',
    'intel': 'intel',
    'mt' : 'mediatek',
    'meson' : 'meson',
    'moxa' : 'moxa',
    'mstar' : 'mstar',
    'nuvo' : 'nuvoton',
    'lpc' : 'lpc',
    'lan96' : 'microchip',
    'owl' : 'actions',
    'ox8' : 'oxsemi',
    'rda' : 'rda',
    'rtd' : 'realtek',
    'r7' : 'renesas',
    'r8' : 'renesas',
    'r9' : 'renesas',
    'emev2' : 'renesas',
    'sh73a' : 'renesas',
    'gr-' : 'renesas',
    'iwg' : 'renesas',
    'rk' : 'rockchip',
    'rv11' : 'rockchip',
    'rockchip' : 'rockchip',
    'socfpga' : 'socfpga',
    'stm' : 'stm32',
    'sti' : 'sti',
    'st-pin' : 'sti',
    'ste' : 'st-ericsson',
    'spear' : 'spear',
    'axp' : 'allwinner',
    'tegra' : 'nvidia',
    'milbeaut' : 'socionext',
    'uniph' : 'socionext',
    'vt8500' : 'vt8500',
    'wm8' : 'vt8500',
    'xen' : 'xen',
    'zx' : 'zte',
    'zynq' : 'xilinx',
}

Rob

[1] git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git arm-dts-move-v2