Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932307AbbBZQOb (ORCPT ); Thu, 26 Feb 2015 11:14:31 -0500 Received: from mail-pd0-f180.google.com ([209.85.192.180]:41157 "EHLO mail-pd0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932243AbbBZQO2 (ORCPT ); Thu, 26 Feb 2015 11:14:28 -0500 From: Mathieu Poirier To: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, zhang.chunyan@linaro.org, kaixu.xia@linaro.org Subject: [PATCH RESEND] coresight-stm: Bindings for System Trace Macrocell Date: Thu, 26 Feb 2015 09:14:18 -0700 Message-Id: <1424967258-28573-1-git-send-email-mathieu.poirier@linaro.org> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2474 Lines: 70 The System Trace Macrocell (STM) is an IP block falling under the CoreSight umbrella. It's main purpose it so expose stimulus channels to any system component for the purpose of information logging. Bindings for this IP block adds a couple of items to the current mandatory definition for CoreSight components. The driver has been posted here[1]. [1]. https://lkml.org/lkml/2015/2/25/743 Signed-off-by: Mathieu Poirier --- .../devicetree/bindings/arm/coresight.txt | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/coresight.txt b/Documentation/devicetree/bindings/arm/coresight.txt index a3089359aaa6..854127578718 100644 --- a/Documentation/devicetree/bindings/arm/coresight.txt +++ b/Documentation/devicetree/bindings/arm/coresight.txt @@ -17,6 +17,7 @@ its hardware characteristcs. - "arm,coresight-tmc", "arm,primecell"; - "arm,coresight-funnel", "arm,primecell"; - "arm,coresight-etm3x", "arm,primecell"; + - "arm,coresight-stm", "arm,primecell"; * reg: physical base address and length of the register set(s) of the component. @@ -31,6 +32,14 @@ its hardware characteristcs. layout using the generic DT graph presentation found in "bindings/graph.txt". +* Additional required properly for System Trace Macrocells (STM): + * reg: along with the physical base address and length of the register + set as described above, another entry is required to describe the + mapping of the extended stimulus port area. + + * reg-names: the only acceptable values are "stm-base" and + "stm-channel-base", each corresponding to the areas defined in "reg". + * Required properties for devices that don't show up on the AMBA bus, such as non-configurable replicators: @@ -198,3 +207,19 @@ Example: }; }; }; + +4. STM + stm@20100000 { + compatible = "arm,coresight-stm", "arm,primecell"; + reg = <0 0x20100000 0 0x1000>, + <0 0x28000000 0 0x180000>; + reg-names = "stm-base", "stm-channel-base"; + + clocks = <&soc_smc50mhz>; + clock-names = "apb_pclk"; + port { + stm_out_port: endpoint { + remote-endpoint = <&main_funnel_in_port2>; + }; + }; + }; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/