From owner-freebsd-arm@freebsd.org Wed Mar 10 17:26:53 2021 Return-Path: Delivered-To: freebsd-arm@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 394245716C5 for ; Wed, 10 Mar 2021 17:26:53 +0000 (UTC) (envelope-from maciphone2@googlemail.com) Received: from mail-wr1-x429.google.com (mail-wr1-x429.google.com [IPv6:2a00:1450:4864:20::429]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DwfC02njZz3sTR; Wed, 10 Mar 2021 17:26:52 +0000 (UTC) (envelope-from maciphone2@googlemail.com) Received: by mail-wr1-x429.google.com with SMTP id b18so24219449wrn.6; Wed, 10 Mar 2021 09:26:52 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:content-transfer-encoding:mime-version :subject:date:references:to:in-reply-to:message-id; bh=pPyKLgVM8h28x6Zq8fjNEWTdIbIYPLqrkQufnzqVbFw=; b=bnzpB+wbk1ReQ9s+syrS74IYO7CjmmSlYfPJZ0aCHA4HiaskXL2sXC0ICgknAYjWEM 4dTUSzcPqq4EcRjgwtlN4F7Vyu+HW+LXr4reZml7fh90yN7pmp+ibNiCstKu3LSIZnGb r1agSIAH+UcY7z9EF7Ign78ALyIBAAVnKufxAKz7da1Sj11jdCLTsWqYJHwo1fnwXlUL wQH54IvbcD7xEnjV8VZDuFOj7LPFFI/E+1KQO6+HIv42Y2a6IaVKxXHGwxWnuQ83iCJB oDQBE2q1lvZ0zAyBMff1lSIETNsS06yHh+obJy5e7whIgwcdCSD/pvK6tl4Q2v8Pb90B iY0w== X-Gm-Message-State: AOAM531IC9fvMewgXF++izRyoB/fDj//6HQJWDXcX1EgWFQX3WbQhbOe vRnjaNj0H0Gi9gnGPZkUCnyEbjd2ekoDiw== X-Google-Smtp-Source: ABdhPJyduc+Vi2rE5X++qmBFSaxp+E3X1kFYRNekcRTeG+kUE4RJHVxXdllcTXC5QtwEB5yVqpi7Ww== X-Received: by 2002:a5d:4903:: with SMTP id x3mr4595634wrq.143.1615397211027; Wed, 10 Mar 2021 09:26:51 -0800 (PST) Received: from [192.168.1.167] (dynamic-046-114-155-134.46.114.pool.telefonica.de. [46.114.155.134]) by smtp.googlemail.com with ESMTPSA id a17sm130520wmj.9.2021.03.10.09.26.50 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 10 Mar 2021 09:26:50 -0800 (PST) From: =?utf-8?Q?Klaus_K=C3=BCchemann?= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.60.0.2.21\)) Subject: Re: RPI4/8GB i2c not working? Date: Wed, 10 Mar 2021 18:26:48 +0100 References: <0D013C24-3CDD-4262-922C-524916ACCB10@FreeBSD.org> <599EDCF7-D716-4645-8832-E429C5E17F6E@yahoo.com> <526E2EA2-DF46-4CF0-B75C-1D1118AA4FD8@googlemail.com> To: Mark Murray , freebsd-arm@freebsd.org In-Reply-To: <526E2EA2-DF46-4CF0-B75C-1D1118AA4FD8@googlemail.com> Message-Id: <3B3786FE-7A47-4D29-8F99-98C1F483C0AA@googlemail.com> X-Mailer: Apple Mail (2.3654.60.0.2.21) X-Rspamd-Queue-Id: 4DwfC02njZz3sTR X-Spamd-Bar: / X-Spamd-Result: default: False [0.13 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[googlemail.com]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[googlemail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[googlemail.com,quarantine]; FROM_EQ_ENVFROM(0.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; R_MIXED_CHARSET(0.62)[subject]; FREEMAIL_ENVFROM(0.00)[googlemail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[googlemail.com:dkim]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[googlemail.com:s=20161025]; RECEIVED_SPAMHAUS_PBL(0.00)[46.114.155.134:received]; FROM_HAS_DN(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[2a00:1450:4864:20::429:from]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; NEURAL_SPAM_SHORT(1.00)[1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; SPAMHAUS_ZRD(0.00)[2a00:1450:4864:20::429:from:127.0.2.255]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::429:from]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-arm] X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Porting FreeBSD to ARM processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Mar 2021 17:26:53 -0000 root@generic:~ # i2c -f /dev/iic0 -s -v dev: /dev/iic0, addr: 0x40100401, r/w: r, offset: 0x00, width: 8, count: = 1 Hardware may not support START/STOP scanning; trying less-reliable read = method. =E2=80=94=E2=80=94 So the device is there ! .... root@generic:~ # ktrace -t+ i2c -s -f /dev/iic0 root@generic:~ # kdump .... 1287 i2c RET open 3 1287 i2c CALL read(0x3,0x4027cc18,0x80) 1287 i2c GIO fd 3 read 128 bytes 0x0000 4568 6e74 0100 0000 8000 0000 d500 0000 = |Ehnt............| 0x0010 0000 0000 d400 0000 0000 0000 0000 0000 = |................| 0x0020 0000 0000 0000 0000 0000 0000 0000 0000 = |................| 0x0030 0000 0000 0000 0000 0000 0000 0000 0000 = |................| 0x0040 0000 0000 0000 0000 0000 0000 0000 0000 = |................| 0x0050 0000 0000 0000 0000 0000 0000 0000 0000 = |................| 0x0060 0000 0000 0000 0000 0000 0000 0000 0000 = |................| 0x0070 0000 0000 0000 0000 0000 0000 0000 0000 = |................| =E2=80=94 successful GIO fd 3 read looks quite good working !=E2=80=A6 But then loops in the end : 1287 i2c RET ioctl -1 errno 35 Resource temporarily unavailable 1287 i2c CALL ioctl(0x3,I2CRSTCARD,0xffffffffea70) 1287 i2c RET ioctl 0 1287 i2c CALL ioctl(0x3,I2CRDWR,0xffffffffe998) 1287 i2c RET ioctl -1 errno 35 Resource temporarily unavailable 1287 i2c CALL ioctl(0x3,I2CRSTCARD,0xffffffffea70) since I don't have an i2c-gadget to test at the moment , can't say which = device exactly=20 supports START/STOP scanning and which not. Also possibly some things cood depend on loaded overlays/config.txt=20 and which corresponding GPIO-pins are configured=20 K.