From patchwork Mon Jun 26 10:28:13 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baolin Wang X-Patchwork-Id: 780653 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3wx53C3sqkz9s65 for ; Mon, 26 Jun 2017 20:32:23 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751415AbdFZKb6 (ORCPT ); Mon, 26 Jun 2017 06:31:58 -0400 Received: from sci-ig2.spreadtrum.com ([222.66.158.135]:51242 "EHLO SHSQR01.spreadtrum.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751382AbdFZKb5 (ORCPT ); Mon, 26 Jun 2017 06:31:57 -0400 Received: from ig2.spreadtrum.com (shcas01.spreadtrum.com [10.0.1.201]) by SHSQR01.spreadtrum.com with ESMTP id v5QAVAJs031037 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NO); Mon, 26 Jun 2017 18:31:10 +0800 (CST) (envelope-from Orson.Zhai@spreadtrum.com) Received: from SHCAS01.spreadtrum.com (10.0.1.201) by SHMBX04.spreadtrum.com (10.0.1.214) with Microsoft SMTP Server (TLS) id 15.0.847.32; Mon, 26 Jun 2017 18:31:09 +0800 Received: from localhost (10.0.73.143) by SHCAS01.spreadtrum.com (10.0.1.250) with Microsoft SMTP Server (TLS) id 15.0.847.32 via Frontend Transport; Mon, 26 Jun 2017 18:31:10 +0800 From: Baolin Wang To: , , CC: , , , , , Subject: [PATCH v3 1/2] dt-bindings: i2c: Add Spreadtrum I2C controller documentation Date: Mon, 26 Jun 2017 18:28:13 +0800 Message-ID: <2083c9d6e96a72f9c1324c8a277acfd780a34094.1498472593.git.baolin.wang@spreadtrum.com> X-Mailer: git-send-email 2.12.2 MIME-Version: 1.0 X-MAIL: SHSQR01.spreadtrum.com v5QAVAJs031037 Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org This patch adds the binding documentation for Spreadtrum I2C controller device. Signed-off-by: Baolin Wang Acked-by: Rob Herring --- Changes since v2: - Change compatible strings to be SoC specific. Changes since v1: - No updates. --- Documentation/devicetree/bindings/i2c/i2c-sprd.txt | 31 ++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/i2c-sprd.txt diff --git a/Documentation/devicetree/bindings/i2c/i2c-sprd.txt b/Documentation/devicetree/bindings/i2c/i2c-sprd.txt new file mode 100644 index 0000000..60b7cda --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-sprd.txt @@ -0,0 +1,31 @@ +I2C for Spreadtrum platforms + +Required properties: +- compatible: Should be "sprd,sc9860-i2c". +- reg: Specify the physical base address of the controller and length + of memory mapped region. +- interrupts: Should contain I2C interrupt. +- clock-names: Should contain following entries: + "i2c" for I2C clock, + "source" for I2C source (parent) clock, + "enable" for I2C module enable clock. +- clocks: Should contain a clock specifier for each entry in clock-names. +- clock-frequency: Constains desired I2C bus clock frequency in Hz. +- #address-cells: Should be 1 to describe address cells for I2C device address. +- #size-cells: Should be 0 means no size cell for I2C device address. + +Optional properties: +- Child nodes conforming to I2C bus binding + +Examples: +i2c0: i2c@70500000 { + compatible = "sprd,sc9860-i2c"; + reg = <0 0x70500000 0 0x1000>; + interrupts = ; + clock-names = "i2c", "source", "enable"; + clocks = <&clk_i2c3>, <&ext_26m>, <&clk_ap_apb_gates 11>; + clock-frequency = <400000>; + #address-cells = <1>; + #size-cells = <0>; +}; +