From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick Menschel Subject: Re: Testing CAN on Allwinner A20 / Banana Pi Date: Sat, 19 Mar 2016 13:27:53 +0100 Message-ID: <56ED45C9.7080803@posteo.de> References: <55F3E7A0.9020309@posteo.de> <55F3ECAC.7040508@pengutronix.de> Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms020101090305000509060406" Return-path: Received: from mout01.posteo.de ([185.67.36.65]:55311 "EHLO mout01.posteo.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753980AbcCSM2A (ORCPT ); Sat, 19 Mar 2016 08:28:00 -0400 Received: from dovecot03.posteo.de (dovecot03.posteo.de [172.16.0.13]) by mout01.posteo.de (Postfix) with ESMTPS id 6657F2047C for ; Sat, 19 Mar 2016 13:27:54 +0100 (CET) In-Reply-To: <55F3ECAC.7040508@pengutronix.de> Sender: linux-can-owner@vger.kernel.org List-ID: To: Marc Kleine-Budde , linux-can This is a cryptographically signed message in MIME format. --------------ms020101090305000509060406 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hello Marc, you mentioned that you have a running Bpi with mainline kernel. My question would be if you're also running mainline u-boot with device tree bindings. I'm now running mainline kernel from stable branch compiled with sunxi_defconfig thus CAN driver is built-in and mainline u-boot according to http://linux-sunxi.org/Mainline_Kernel_Howto http://linux-sunxi.org/Mainline_U-boot =2E I've added can0 entries manually to arch/arm/boot/dts/sun7i-a20.dtsi arch/arm/boot/dts/sun7i-a20-bananapi.dts since they are missing in the stable branch. Compiling to dtb and back to dts now resolves to can@01c2bc00 { compatible =3D "allwinner,sun4i-a10-can"; reg =3D <0x1c2bc00 0x400>; interrupts =3D <0x0 0x1a 0x4>; clocks =3D <0x31 0x4>; status =3D "okay"; pinctrl-names =3D "default"; pinctrl-0 =3D <0x32>; }; That does look plausible from my perspective. Unfortunately I'm still missing /dev/can0 and have no clue why. If your Bpi works with legacy u-boot, I would try that next. Thanks and Best Regards, Patrick Am 12.09.2015 um 11:13 schrieb Marc Kleine-Budde: > On 09/12/2015 10:51 AM, Patrick Menschel wrote: >=20 >> I'm new to socketcan and like to test the recent driver for the >> Allwinner A20 on a BPi. >> >> I've got a BPi running CAN4Linux and like to setup a second BPi runnin= g >> socketcan. >=20 > Is your CAN4Linux setup working? It's good to have a working CAN statio= n > to talk to. >=20 >> I have some basic questions prior to get started with the project: >> >> 1. >> Which kernel version is necessary for the current socketcan? >> I use the standard linux-sunxi kernel from the repos as this worked we= ll >> with CAN4Linux. >> https://github.com/linux-sunxi/linux-sunxi.git >=20 > I'm using mainline linux on my Bpi. Works quite well. I don't use the > graphics, though. >=20 >> 2. >> I haven't been able to locate the recent driver on the repos. >> https://git.kernel.org/cgit/linux/kernel/git/mkl/linux-can-next.git/ >> https://git.kernel.org/cgit/linux/kernel/git/mkl/linux-can.git/ >> >> Did I miss something, because none of the related commits I see in the= >> mailing list are present in the repo? >=20 > The driver by Gerhard Bertelsmann is still under review, you have to > apply the patches: >=20 > http://article.gmane.org/gmane.linux.can/8511/raw > http://article.gmane.org/gmane.linux.can/8512/raw >=20 > to your kernel manually. You have to switch on the CAN driver in you dt= s > as documented in patch 8511. Note: When using the patch from the gmane > archive you have to replace the " " by a "@" sign. >=20 > Marc >=20 --------------ms020101090305000509060406 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC CfcwggSvMIIDl6ADAgECAhEA4CPLFRKDU4mtYW56VGdrITANBgkqhkiG9w0BAQsFADBvMQsw CQYDVQQGEwJTRTEUMBIGA1UEChMLQWRkVHJ1c3QgQUIxJjAkBgNVBAsTHUFkZFRydXN0IEV4 dGVybmFsIFRUUCBOZXR3b3JrMSIwIAYDVQQDExlBZGRUcnVzdCBFeHRlcm5hbCBDQSBSb290 MB4XDTE0MTIyMjAwMDAwMFoXDTIwMDUzMDEwNDgzOFowgZsxCzAJBgNVBAYTAkdCMRswGQYD VQQIExJHcmVhdGVyIE1hbmNoZXN0ZXIxEDAOBgNVBAcTB1NhbGZvcmQxGjAYBgNVBAoTEUNP TU9ETyBDQSBMaW1pdGVkMUEwPwYDVQQDEzhDT01PRE8gU0hBLTI1NiBDbGllbnQgQXV0aGVu dGljYXRpb24gYW5kIFNlY3VyZSBFbWFpbCBDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCC 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