From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946800AbdEZDcu (ORCPT ); Thu, 25 May 2017 23:32:50 -0400 Received: from mail-pf0-f196.google.com ([209.85.192.196]:34591 "EHLO mail-pf0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S939762AbdEZDch (ORCPT ); Thu, 25 May 2017 23:32:37 -0400 From: Joel Stanley To: Philipp Zabel , Rob Herring , Mark Rutland Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Benjamin Herrenschmidt , Andrew Jeffery Subject: [PATCH 1/2] dt-bindings: reset: Add bindings for basic reset controller Date: Fri, 26 May 2017 13:32:13 +1000 Message-Id: <20170526033214.8081-2-joel@jms.id.au> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170526033214.8081-1-joel@jms.id.au> References: <20170526033214.8081-1-joel@jms.id.au> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This adds the bindings documentation for a basic single-register reset controller. The bindings describe a single 32-bit register that contains up to 32 reset lines, each deasserted by clearing the appropriate bit in the register. Signed-off-by: Joel Stanley --- .../devicetree/bindings/reset/reset-basic.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/reset/reset-basic.txt diff --git a/Documentation/devicetree/bindings/reset/reset-basic.txt b/Documentation/devicetree/bindings/reset/reset-basic.txt new file mode 100644 index 000000000000..7341e04e7904 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/reset-basic.txt @@ -0,0 +1,31 @@ +Basic single-register reset controller +====================================== + +This describes a generic reset controller where the reset lines are controlled +by single bits within a 32-bit memory location. The memory location is assumed +to be part of a syscon regmap. + +Reset controller required properties: + - compatible: should be "reset-basic" + - #reset-cells: must be set to 1 + - reg: reset register location within regmap + +Device node required properties: + - resets phandle + - bit number, counting from zero, for the desired reset line. Max is 31. + +Example: + +syscon { + compatible = "syscon"; + + uart_rest: rest@0c { + compatible = "reset-basic"; + #reset-cells = <1>; + reg = <0x0c>; + }; +} + +&uart { + resets = <&uart_rest 0x04>; +} -- 2.11.0