From patchwork Wed Mar 14 23:58:46 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karthikeyan Ramasubramanian X-Patchwork-Id: 10283763 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D3D2D602C2 for ; Wed, 14 Mar 2018 23:59:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C4F05286DD for ; Wed, 14 Mar 2018 23:59:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B7A68286E5; Wed, 14 Mar 2018 23:59:22 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2CFAD286DD for ; Wed, 14 Mar 2018 23:59:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751957AbeCNX7S (ORCPT ); Wed, 14 Mar 2018 19:59:18 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:54856 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751755AbeCNX7L (ORCPT ); Wed, 14 Mar 2018 19:59:11 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 4031860314; Wed, 14 Mar 2018 23:59:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1521071951; bh=+78Ks7IBkawi8FeIfjqexGJ9AsxENlzg4UQLbpnmrq4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hbsi9YWDsVxcW2vKDF0WCCxTs7AhzOL5eZWYdXyxBhuFzrOi8x8ztcBVxu1GPg+Mp ihBcRU/YefGhboI7/i/E2AEcgi2DtYN0Ax0RzM7jyHciIeEV5cLTOWux3xgiBa4FmJ UOskExjQMar1jniYtHNWo7HZf5Jc/LJpz+vsVtn0= Received: from codeaurora.org (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: kramasub@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id BE6396081A; Wed, 14 Mar 2018 23:59:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1521071950; bh=+78Ks7IBkawi8FeIfjqexGJ9AsxENlzg4UQLbpnmrq4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XtsQ62vFeqwYILD5iWutM3vaNE+lDhEN14VSnXmyRNVqI6CNSiOrBH+adq1TQ7AQV WuDTUdGw8y/7A6J+NMOZ468/ubRkceziq0qmT0phKjVjRAPi0mFu/pdpWVkwo/TieP 8tJvqVeW5Ilv4ItHoKfJtpBdDmqzafvNCIc861is= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org BE6396081A Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=kramasub@codeaurora.org From: Karthikeyan Ramasubramanian To: corbet@lwn.net, andy.gross@linaro.org, david.brown@linaro.org, robh+dt@kernel.org, mark.rutland@arm.com, wsa@the-dreams.de, gregkh@linuxfoundation.org Cc: Karthikeyan Ramasubramanian , linux-doc@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-i2c@vger.kernel.org, linux-serial@vger.kernel.org, jslaby@suse.com, evgreen@chromium.org, acourbot@chromium.org, swboyd@chromium.org, Sagar Dharia , Girish Mahadevan Subject: [PATCH v4 1/6] dt-bindings: soc: qcom: Add device tree binding for GENI SE Date: Wed, 14 Mar 2018 17:58:46 -0600 Message-Id: <1521071931-9294-2-git-send-email-kramasub@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1521071931-9294-1-git-send-email-kramasub@codeaurora.org> References: <1521071931-9294-1-git-send-email-kramasub@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add device tree binding support for the QCOM GENI SE driver. Signed-off-by: Karthikeyan Ramasubramanian Signed-off-by: Sagar Dharia Signed-off-by: Girish Mahadevan Reviewed-by: Rob Herring Reviewed-by: Stephen Boyd --- .../devicetree/bindings/soc/qcom/qcom,geni-se.txt | 123 +++++++++++++++++++++ 1 file changed, 123 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt new file mode 100644 index 0000000..b71b5df --- /dev/null +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt @@ -0,0 +1,123 @@ +Qualcomm Technologies, Inc. GENI Serial Engine QUP Wrapper Controller + +Generic Interface (GENI) based Qualcomm Universal Peripheral (QUP) wrapper +is a programmable module for supporting a wide range of serial interfaces +like UART, SPI, I2C, I3C, etc. A single QUP module can provide upto 8 Serial +Interfaces, using its internal Serial Engines. The GENI Serial Engine QUP +Wrapper controller is modeled as a node with zero or more child nodes each +representing a serial engine. + +Required properties: +- compatible: Must be "qcom,geni-se-qup". +- reg: Must contain QUP register address and length. +- clock-names: Must contain "m-ahb" and "s-ahb". +- clocks: AHB clocks needed by the device. + +Required properties if child node exists: +- #address-cells: Must be <1> for Serial Engine Address +- #size-cells: Must be <1> for Serial Engine Address Size +- ranges: Must be present + +Properties for children: + +A GENI based QUP wrapper controller node can contain 0 or more child nodes +representing serial devices. These serial devices can be a QCOM UART, I2C +controller, SPI controller, or some combination of aforementioned devices. +Please refer below the child node definitions for the supported serial +interface protocols. + +Qualcomm Technologies Inc. GENI Serial Engine based I2C Controller + +Required properties: +- compatible: Must be "qcom,geni-i2c". +- reg: Must contain QUP register address and length. +- interrupts: Must contain I2C interrupt. +- clock-names: Must contain "se". +- clocks: Serial engine core clock needed by the device. +- #address-cells: Must be <1> for I2C device address. +- #size-cells: Must be <0> as I2C addresses have no size component. + +Optional property: +- clock-frequency: Desired I2C bus clock frequency in Hz. + When missing default to 400000Hz. + +Child nodes should conform to I2C bus binding as described in i2c.txt. + +Qualcomm Technologies Inc. GENI Serial Engine based UART Controller + +Required properties: +- compatible: Must be "qcom,geni-debug-uart". +- reg: Must contain UART register location and length. +- interrupts: Must contain UART core interrupts. +- clock-names: Must contain "se". +- clocks: Serial engine core clock needed by the device. + +Qualcomm Technologies Inc. GENI Serial Engine based SPI Controller + +Required properties: +- compatible: Must contain "qcom,geni-spi". +- reg: Must contain SPI register location and length. +- interrupts: Must contain SPI controller interrupts. +- clock-names: Must contain "se". +- clocks: Serial engine core clock needed by the device. +- spi-max-frequency: Specifies maximum SPI clock frequency, units - Hz. +- #address-cells: Must be <1> to define a chip select address on + the SPI bus. +- #size-cells: Must be <0>. + +Optional property: +- qcom,rt: Indicates if the framework worker thread for this + controller device should have real-time priority. + +SPI slave nodes must be children of the SPI master node and conform to SPI bus +binding as described in Documentation/devicetree/bindings/spi/spi-bus.txt. + +Example: + geniqup@8c0000 { + compatible = "qcom,geni-se-qup"; + reg = <0x8c0000 0x6000>; + clock-names = "m-ahb", "s-ahb"; + clocks = <&clock_gcc GCC_QUPV3_WRAP_0_M_AHB_CLK>, + <&clock_gcc GCC_QUPV3_WRAP_0_S_AHB_CLK>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + i2c0: i2c@a94000 { + compatible = "qcom,geni-i2c"; + reg = <0xa94000 0x4000>; + interrupts = ; + clock-names = "se"; + clocks = <&clock_gcc GCC_QUPV3_WRAP0_S5_CLK>; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&qup_1_i2c_5_active>; + pinctrl-1 = <&qup_1_i2c_5_sleep>; + #address-cells = <1>; + #size-cells = <0>; + }; + + uart0: serial@a88000 { + compatible = "qcom,geni-debug-uart"; + reg = <0xa88000 0x7000>; + interrupts = ; + clock-names = "se"; + clocks = <&clock_gcc GCC_QUPV3_WRAP0_S0_CLK>; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&qup_1_uart_3_active>; + pinctrl-1 = <&qup_1_uart_3_sleep>; + }; + + spi0: spi@a84000 { + compatible = "qcom,geni-spi"; + reg = <0xa84000 0x4000>; + interrupts = ; + clock-names = "se"; + clocks = <&clock_gcc GCC_QUPV3_WRAP0_S0_CLK>; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&qup_1_spi_2_active>; + pinctrl-1 = <&qup_1_spi_2_sleep>; + spi-max-frequency = <19200000>; + #address-cells = <1>; + #size-cells = <0>; + }; + }