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header.i=@lists.infradead.org header.b="MQzrkMt2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1EEAA20B7C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=medhas.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Content-Type:Cc: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:Date:Message-ID:Subject:From:References:To:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=aJ+PhtLmzj2PQkYnxfWxu3/oHBmoXJmBZmrFcuwfheE=; b=MQzrkMt252cA5xO1po8LaknYZ xLsBgUMLLyU08Tm25CCzK/QSE9RPTMy63kqjDaNl5v9Q4sDaH2nDbu4s+FYqOBp/tcjHPOyfJjlld 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<20190807120104.ssj5cvx4hwicufrv@flea> <20190807144533.bbgtmkva34su7c5v@flea> From: Sunil Mohan Adapa Openpgp: preference=signencrypt Autocrypt: addr=sunil@medhas.org; prefer-encrypt=mutual; keydata= mQINBE6+XsABEAC+LfjiBMhv3v83RF7x8BVRE1Sxa0CNluC5KCNSuO82lsGuz08TAmDnDzRw vWM2sSmq3o/9wjDxUJdlEZCP3EfHekwhNFAwW6HIAEuIxub8oCw3NX8IVaj+jRToiEFx2g+z MIQLc5bErNLVf+LTIe3fXVmoRdGsMHf9TqGXyJxdkGYbKw7C9XF32cemVrRO3w1SSBJQQpmJ qpB0MgON4lbeLZI7Ym0U/ARlE+7r0c7szmdWlaSHjKdjlrkcLOi8OEfA8fkJctWUqjJ9LiZ6 p5fslC98/8ZRZP5ZA9Jr8JDX1aNkZu3Lz5CfhHgyizWqzxtISdI4ho+LCaUxjw6WY48AYVgq JjCxRPk5D4YGf0Fc7/yWpAGNQOR8poaxh256yd1ZfsAjzRLtfnFrGIsdmdbZp3ZyzDxnVFGh I49oONUNpNXhYlfCgGOF9gQHTPI3jeafsBzACYFKMQbqWN6EJUsP3EhUferGjdJ+Zq+z5AKg Ho8AxDVKzpnuzz2wGwcePwd7mmIZffdcWhbc6JMfwg6G4moj4EnYaC5qI97xllV/cJR3/JLD Ma8VcGCXgbOlmToSMZQAXjHcU7TJNZm5/63+CAcyibsyOmf2e15QjAE7z53vwTztTipxF2sI ZB+e9PFTkBlQVVan+Zb1mqxFgjVPzpn6NKaTNyGqdAGX/vy0/QARAQABtCRTdW5pbCBNb2hh 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48tzKSTCdUqbpxhs0SeNbYxKhNvpMoizbhlthSDM7r/N7zwsiV+HE5RJ1RwJEDbDYUQMm8lx hfYP/A9Xp4h7AK0XxAXZ8BdueE4Ov2suPTDPwaijwI0fpTtqCyFoZvA+iQ96NP6XB2YUdyt3 Isr/FfqynJ1BDRA818O7lwcLgQYvteIzaXCO9HTpRnbHPRfaGL5umfMVJVlyksO5dLDiW+Hg /F+pwXx+1U8Q9bd3zmRP/TiDrqx1BFSRh5Cw9LOn4ZQiyUjTX96Sh9+QgGv4u8oOR0LE1eGa 9VXAbMwuKeqfnqTAfuXBSazWrFeMx28navqAHCL3l0CLOSpWy4ucfHlijgXAtUeOb3JIpg52 n7GXIgUWScOZ5uU2etsX/zgLIpa4Q+8vU/PPicPV9BORVO6wox+rmj8pghBUfkLNdSGzsYBm 7ZBNPm4Hsmt56sUWpEy7N5WxUMye9ytzm5DHDYMoh3tFB/QV9/k1emHh1SrZs4GJbQfVWplH L7gVSztAskBlNMvpND7dEp4eAl6Pgvj8Adngw7HPez2+VdyDQc9ZGpMRwPmdn19s2eQ7/Z7V J0ilCIPqQh4huyE2PTBM9IxxdRzWXvK0AofqUAOr/tr0FwjLBKcdwFvdztBom2joq8KEtf2z lwGFSHsGPkuVCVH9a38qwZny9vJw2qXrKGLt12McR3upXjgX9clWulnmdlVQV7P9cbgRs79R B5MmWq/06zaN1J9dmkDo3VRd7W5P0joS/KUnFsPP Subject: Re: [PATCH v2] arm64: dts: allwinner: a64: Enable eMMC on A64-OLinuXino Message-ID: <70322b1b-2ee2-89c7-96f9-0d2dba4e0d64@medhas.org> Date: Wed, 7 Aug 2019 23:25:20 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: X-Provags-ID: V03:K1:6IOOY/IyU75/G6YipPBjM2Ygy6icnVQBANADqjZdlnlEwBOzBBE rWMV/RPAh27vqVcqDeQ68PEylnKuAblS+nSdMxR9+FKGHcKfegE/EnyEMWwpm3Fkny4oO0w nhyVQqhGftEJK9gjmlDyZlj9cwE6htC6fyVJ0JjCKL5uNRMQtuGldZQP2rtSeoC6wwAUUFK GGLnG0B9C2deJK2Z0QyrA== X-UI-Out-Filterresults: notjunk:1;V03:K0:xCiW9zExm6Y=:bNVOMwnsVcP2xy+ETCsDNo q5q8nqviiow/pJg3gDzoYixVKZBw8GmmebLy608Eg1lTmSc43mLUijJWuPJIQ9vmw0hd0NQZx pSVQ70ROuZ/qnmajlKhd791lW+GMvCn3LciDnLuBar2eAx8KZ0NL5xY1SuFmn8w/wNJ68FvdY JHnjuMHePmsh4fcom/iIJsk7lCUr74kxJjoNYgN3cyim6wigPchuZZ5S92naTTQ1Xy1pK1L7a vx+qZpTFSyL1mAS3hl4sDwR3fugEWtl+MOum78nVOSAoSOiaKhcHfFbzUiooQVZSzRpZctDBd 8iu+QhYh37DcpNVpK4ys82zhgCc4/ftSfmb/3QaDVI8gVwtqvIOd9struK7owwlSFX9l3PP0+ fQEV/BG1/W3xDpKEEf3Wh5oHkipdsyp75Hco0tNwDCDdSyf0WuI433XbjBmHcnAx3r5+D2yew +xUJ5rAzLoSbgl9ZTnarpvJioDnjTCEKzR2EL4zhQCSQu7hLrzfoXFb4nMs6QYUx0bHTtAs2c e8aHEVeY3C/o6snXswLuw98CfN7xw+cv4JSZWnUnz081ek5d5Mv67ytz+w7z4yeJhcNY6rnSY 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boundary="l0W2RWQOlWKrprhxDE0SOR9OWjGbAJSRS" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --l0W2RWQOlWKrprhxDE0SOR9OWjGbAJSRS Content-Type: multipart/mixed; boundary="CN8cvDI24KuDzx2gAlveLvkX7PGuY4B79"; protected-headers="v1" From: Sunil Mohan Adapa To: Chen-Yu Tsai , Maxime Ripard Cc: Martin Ayotte , linux-arm-kernel Message-ID: <70322b1b-2ee2-89c7-96f9-0d2dba4e0d64@medhas.org> Subject: Re: [PATCH v2] arm64: dts: allwinner: a64: Enable eMMC on A64-OLinuXino References: <20190727210307.17607-1-sunil@medhas.org> <1955D9AD572C4F57A2D66B15EB8CF79C@GirolesWin7> <20190807120104.ssj5cvx4hwicufrv@flea> <20190807144533.bbgtmkva34su7c5v@flea> In-Reply-To: --CN8cvDI24KuDzx2gAlveLvkX7PGuY4B79 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 07/08/19 10:12 pm, Chen-Yu Tsai wrote: > On Wed, Aug 7, 2019 at 10:45 PM Maxime Ripard wrote: >> >> Hi, >> >> On Wed, Aug 07, 2019 at 08:09:19PM +0800, Chen-Yu Tsai wrote: >>> On Wed, Aug 7, 2019 at 8:01 PM Maxime Ripard wrote: >>>> >>>> On Tue, Aug 06, 2019 at 02:25:17PM +0800, Chen-Yu Tsai wrote: >>>>> On Mon, Aug 5, 2019 at 8:58 PM Martin Ayotte wrote: >>>>>> >>>>>> Fine for me too. >>>>>> >>>>>> Thanks . >>>>>> >>>>>> -----Message d'origine----- >>>>>> De : Sunil Mohan Adapa [mailto:sunil@medhas.org] >>>>>> Envoy=C3=A9 : Monday, August 05, 2019 1:25 AM >>>>>> =C4=84 : Chen-Yu Tsai >>>>>> Cc : Maxime Ripard; Martin Ayotte; linux-arm-kernel >>>>>> Objet : Re: [PATCH v2] arm64: dts: allwinner: a64: Enable eMMC on >>>>>> A64-OLinuXino >>>>>> >>>>>> On 04/08/19 8:33 pm, Chen-Yu Tsai wrote: >>>>>>> On Fri, Aug 2, 2019 at 2:47 AM Sunil Mohan Adapa wrote: >>>>>>>> >>>>>>>> On 01/08/19 6:49 am, Martin Ayotte wrote: >>>>>>>>> If my SOB could help here, I don't mind since I've done the com= mit >>>>>>>>> more than a year ago for Armbian ... >>>>>>>>> >>>>>>>>> Signed-off-by: Martin Ayotte >>>>>>>>> Tested-by: Martin Ayotte >>>>>>>> gmai.com is likely a typo. >>>>>>>> >>>>>>>>> On Wed, Jul 31, 2019 at 10:42 PM Chen-Yu Tsai >>>>>>>> >>>>>>>>>> Thanks. The patch looks good overall. The authorship is a litt= le >>>>>>>>>> confusing though. If it was initially done by Martin (CC-ed), = then >>>>>>>>>> he should be the author, and we should get his Signed-off-by i= f >>>>>>>>>> possible. >>>>>>>> >>>>>>>> Martin is indeed the original author of the patch. Thank you for= >>>>>> reviewing. >>>>>>> >>>>>>> I'd like to apply this patch with Martin as the author, if that's= OK with >>>>>> you >>>>>>> both? >>>>>> >>>>>> That is completely okay with me. >>>>> >>>>> Applied for 5.4. >>>>> >>>>> I reordered the tags so they make more sense: >>>>> >>>>> https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git/com= mit/?h=3Dsunxi/dt-for-5.4&id=3D0834887732df5af41b59b2e4d530fc1f5478965f >>>> >>>> Sorry for being late on this, but it looks like the eMMC, NAND and S= PI >>>> pins are conflicting on the A64-Olinuxino design. >>>> >>>> There's no configuration with a NAND, so we don't really need to wor= ry >>>> about that, but if we merge this in the main DT, we'll prevent anyon= e >>>> from using that DT on an olinuxino with a SPI flash. >>>> >>>> I think we should just create emmc and SPI-flash variants of that DT= =2E >>> >>> Actually they aren't. Olimex specifically uses eMMC modules that don'= t >>> use the data strobe line, so SPI can be used together. >> >> Ah, right. >> >> Still, this creates a precedent that I'm not really comfortable >> with. Three actually. >> >> Merging this in the main DT means three things: >> - We're not consistent anymore, including within the olinuxino >> boards only. A20 Olinuxino is pretty much in the same situation, >> yet we dealt with it differently. >> - This means that this will create a spurious device and report >> errors in the kernel message and whenever someone will try to >> access the device on boards that don't have it wired. This >> shouldn't happen and we really shouldn't expose devices that just >> aren't there, just like you don't have all the devices that are >> not connected on your USB connector. >> - Finally, this means that in order to keep it somewhat consistent, >> we would have to merge the SPI flash in the main DT too. This will= >> prevent people without a SPI flash to use the SPI signals on the >> UEXT connector for something else, which again goes against the >> policy we've had for basically any other board. >=20 > OK. Shall we back it out and figure out something else? I can try to help with alternate implementation with some guidance. I can also test any patches on an A64-OLinuXino model with eMMC. So, do we create a new -emmc.dts like in case of A20 OLinuXino? BTW, a basic question: how does u-boot know which variant of dtb (with -emmc or without) it has load before booting Linux? Does this need to be hardcoded now into the boot script? Currently, in Debian the DTB name is chosen by u-boot and not present in the boot script. Thanks, --=20 Sunil --CN8cvDI24KuDzx2gAlveLvkX7PGuY4B79-- --l0W2RWQOlWKrprhxDE0SOR9OWjGbAJSRS Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE5xPDY9ZyWnWupXSBQ+oc/wqnxfIFAl1LwFAACgkQQ+oc/wqn xfLTIQ//XfA1HRmcmD+Sw5r+IOOo+ulnuKD4nTveLzksBat9G+ejFhUYICPsodab 9dFZhDuWdEVgLS/rwdRR5bdNnXhNir4D6fdey2XN4qmIs/ElQFW34cVE0BRlUTUx BlqNvLn2VCUfkpA7QtQ0lY3qPYfSDf7niEWYee+gPKO0ala2AseifQoK7GfEeTxH kvXoryk8zz9rfi2cZnRkWqHRwN7PixB8jysgeNQ1f6UP18waggJCs4F+mgcPFAvj DB3Lz62RDPRu/pgfDHVDTii+h1hRd6WqeK1kDE4krRqiGcxIxdY3AgJ19L3y8kj4 ko7lRYPoPGw/V3aqOeRaTOlsb7dh9nBUwfUo9mi67ud+VQWAy9GMcG3N8YAaXb0Q y3CIzwD5HffqgUxPcISyy37vH7wj1ZMPNoVFPctll7kfAr+fd/pPxmeup3i+q10b 7UDPsjca2ACBgo8MZqfPYJ63B9/pFgv83OWxI2FYyr22Nh0wyr7l0Ntgq6sAmYLu /efdNgEGnSRseNqrpAshkkmgefFn6d/9qYinQEEuBaF29XLG9uvJOWPpPB0Xps8d wpM/OoULrmF39kRFNlsMG3zGgzevNXZ4cAmL0+YKGgYcl+dB68C7TAtu0KrJPIFT vjGJu8BJjWqxlOut5eYqsIgvocxka3uqLfUj0Oh37iVm/vMUflM= =60tZ -----END PGP SIGNATURE----- --l0W2RWQOlWKrprhxDE0SOR9OWjGbAJSRS-- --===============4582220333452092554== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============4582220333452092554==--