From patchwork Wed Dec 11 23:10:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Leach X-Patchwork-Id: 11286543 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DF6B814E3 for ; Wed, 11 Dec 2019 23:12:09 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BA7E02073D for ; Wed, 11 Dec 2019 23:12:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="LYG668VM"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="p2xub6V5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BA7E02073D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.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-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=yk38RPn/+pxHp+Llp8LOqmQnQX2nvDBRh4eDtGrDFA4=; b=LYG 668VM0JHSaIRQs9ycmtZpfHzXXslkV5boeqisbhzGe6ih/jN6+8av9jQDvMvu7GsuLgA7yfAFtoTX yl//AVhO3EAMm/6QYgsvunrB+c7ptR0DChBSf3/39E5CU2qFofu+H4wg2bVvWbA4LvYMkNFbhBJxx k7vTz81N90TOEQi1mCi+ezNqP5oNO+jKnCr9Sh5nYR6Qs1bj2PMGSWHkP9BLsGd1ssRbnHFWzXqhy P01H6pHjY73BD+eU7yZGZdkReKSsG7sWoziPz4QOabMNMf+UAp9LM910V8bmdjrGT6D9ku/b0VX1k Thw+BqRxPFUKw/ZMoRCwPJBKA9SZ+3A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ifB9N-0003S3-6i; Wed, 11 Dec 2019 23:12:09 +0000 Received: from mail-wr1-x442.google.com ([2a00:1450:4864:20::442]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ifB7f-0001rO-UH for linux-arm-kernel@lists.infradead.org; Wed, 11 Dec 2019 23:10:28 +0000 Received: by mail-wr1-x442.google.com with SMTP id c14so515171wrn.7 for ; Wed, 11 Dec 2019 15:10:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=K/OQ1Jgex7gK828pBxgz7p1Ugpl7TPPOgqjJJN6erjc=; b=p2xub6V5d0HwDx9AtJt8B/VnFwtCprwrjWhVyJLXmPDkb8p0RBJiDwfAxXFqhfTWY/ ioSrG8MtTPf/MaPSuNRWoZCN2lmSHUkzmDu1OmXIKk56A/bk0NjwwYF4FGKDOHk590sR GdoUqwN6FTG3UBRkxN9eUyYmIzCzCQzA2toNugJHl8QlEn3FrvQ9s4lSuPmm6MpFiEFi TqgN7FwepYGwBUwj0rnBmzG6huubXBUJyvNb5g4MWamFg7PkTceVdij1soACez2ijNuX //2SW+UzS3PMoxlbtO5J2hUw9b/uS9Dwa7uPG+1UCGEaHyY+fMWbFOPP/xKZivWSNo7n XaWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=K/OQ1Jgex7gK828pBxgz7p1Ugpl7TPPOgqjJJN6erjc=; b=PTc3plSWTfIWPFmD6yhHCI0cvr5dwneZfCyk37zsTVAv447hpNXWVaKnPrh14aJqzC zjEtI5n6KdN68aTbSqXe6tLfw7Dmn4TDJcWroe79cbWOszpI6hKkUD10cw/oEkl+sswZ LbPrRXjHKu4h4PD6ZU6m79vLQxNXT+u3RI9t1nrplTP6pwodwkR40IMlkrqzmI88P3bc nHzPn13c0GvU4GC5RF5nMuvoUe2xMA0T7Sgvr+AN6iHeSpyV9BVYpn3KlfGCFoF5Zs5q HVDP54Ar+wclanKuz8M+4vo3C9SAehw42nrcAkbQlcaMIHM30eZy+Snkv2Ln2Fsfw93O k6Fg== X-Gm-Message-State: APjAAAVB3ElOb4cElHDXauTb7CFS6muDb77H93qnLKmThUWrfD53r63F MGVDBT/fABE+/3AJ5Zto0s7y3w== X-Google-Smtp-Source: APXvYqy9motU4hDfKLRzWWMC0bjjkzFj3OuqE7x+CkEeOFSMXFgCENuClUOiRPmnaOuHGZYWb19lFw== X-Received: by 2002:adf:f847:: with SMTP id d7mr2591565wrq.35.1576105820794; Wed, 11 Dec 2019 15:10:20 -0800 (PST) Received: from linaro.org ([2a00:23c5:6815:3901:140f:3f8d:647c:49b0]) by smtp.gmail.com with ESMTPSA id f16sm4042806wrm.65.2019.12.11.15.10.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Dec 2019 15:10:20 -0800 (PST) From: Mike Leach To: mike.leach@linaro.org, linux-arm-kernel@lists.infradead.org, coresight@lists.linaro.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org Subject: [PATCH v6 14/15] docs: sysfs: coresight: Add sysfs ABI documentation for CTI Date: Wed, 11 Dec 2019 23:10:14 +0000 Message-Id: <20191211231014.5634-1-mike.leach@linaro.org> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191211_151024_064422_73B195F6 X-CRM114-Status: UNSURE ( 9.76 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:442 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lorenzo.pieralisi@arm.com, mathieu.poirier@linaro.org, suzuki.poulose@arm.com, corbet@lwn.net, liviu.dudau@arm.com, agross@kernel.org, robh+dt@kernel.org, sudeep.holla@arm.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add API usage document for sysfs API in CTI driver. Signed-off-by: Mike Leach --- .../testing/sysfs-bus-coresight-devices-cti | 221 ++++++++++++++++++ 1 file changed, 221 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-cti diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti new file mode 100644 index 000000000000..5ed54d196a17 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti @@ -0,0 +1,221 @@ +What: /sys/bus/coresight/devices//enable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Enable/Disable the CTI hardware. + +What: /sys/bus/coresight/devices//ctmid +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Display the associated CTM ID + +What: /sys/bus/coresight/devices//nr_trigger_cons +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Number of devices connected to triggers on this CTI + +What: /sys/bus/coresight/devices//triggers/name +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Name of connected device + +What: /sys/bus/coresight/devices//triggers/in_signals +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Input trigger signals from connected device + +What: /sys/bus/coresight/devices//triggers/in_types +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Functional types for the input trigger signals + from connected device + +What: /sys/bus/coresight/devices//triggers/out_signals +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Output trigger signals to connected device + +What: /sys/bus/coresight/devices//triggers/out_types +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Functional types for the output trigger signals + to connected device + +What: /sys/bus/coresight/devices//regs/inout_sel +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Select the index for inen and outen registers. + +What: /sys/bus/coresight/devices//regs/inen +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write the CTIINEN register selected by inout_sel. + +What: /sys/bus/coresight/devices//regs/outen +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write the CTIOUTEN register selected by inout_sel. + +What: /sys/bus/coresight/devices//regs/gate +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write CTIGATE register. + +What: /sys/bus/coresight/devices//regs/asicctl +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write ASICCTL register. + +What: /sys/bus/coresight/devices//regs/intack +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Write the INTACK register. + +What: /sys/bus/coresight/devices//regs/appset +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Set CTIAPPSET register to activate channel. Read back to + determine current value of register. + +What: /sys/bus/coresight/devices//regs/appclear +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Write APPCLEAR register to deactivate channel. + +What: /sys/bus/coresight/devices//regs/apppulse +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Write APPPULSE to pulse a channel active for one clock + cycle. + +What: /sys/bus/coresight/devices//regs/chinstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Read current status of channel inputs. + +What: /sys/bus/coresight/devices//regs/choutstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) read current status of channel outputs. + +What: /sys/bus/coresight/devices//regs/triginstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) read current status of input trigger signals + +What: /sys/bus/coresight/devices//regs/trigoutstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) read current status of output trigger signals. + +What: /sys/bus/coresight/devices//channels/trigin_attach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Attach a CTI input trigger to a CTM channel. + +What: /sys/bus/coresight/devices//channels/trigin_detach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Detach a CTI input trigger from a CTM channel. + +What: /sys/bus/coresight/devices//channels/trigout_attach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Attach a CTI output trigger to a CTM channel. + +What: /sys/bus/coresight/devices//channels/trigout_detach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Detach a CTI output trigger from a CTM channel. + +What: /sys/bus/coresight/devices//channels/chan_gate_enable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Enable CTIGATE for single channel (W) or list enabled + channels through the gate (R). + +What: /sys/bus/coresight/devices//channels/chan_gate_disable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Disable CTIGATE for single channel. + +What: /sys/bus/coresight/devices//channels/chan_set +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Activate a single channel. + +What: /sys/bus/coresight/devices//channels/chan_clear +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Deactivate a single channel. + +What: /sys/bus/coresight/devices//channels/chan_pulse +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Pulse a single channel - activate for a single clock cycle. + +What: /sys/bus/coresight/devices//channels/trigout_filtered +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) List of output triggers filtered across all connections. + +What: /sys/bus/coresight/devices//channels/trig_filter_enable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Enable or disable trigger output signal filtering. + +What: /sys/bus/coresight/devices//channels/chan_inuse +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) show channels with at least one attached trigger signal. + +What: /sys/bus/coresight/devices//channels/chan_free +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) show channels with no attached trigger signals. + +What: /sys/bus/coresight/devices//channels/chan_xtrigs_view +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Write channel number to select a channel to view, read to + see triggers attached to selected channel on this CTI. + +What: /sys/bus/coresight/devices//channels/chan_xtrigs_reset +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Clear all channel / trigger programming.