From patchwork Wed Sep 3 16:28:14 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 385571 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 8F03F140275 for ; Thu, 4 Sep 2014 02:31:32 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756162AbaICQaQ (ORCPT ); Wed, 3 Sep 2014 12:30:16 -0400 Received: from ns.mm-sol.com ([37.157.136.199]:60638 "EHLO extserv.mm-sol.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756612AbaICQ3g (ORCPT ); Wed, 3 Sep 2014 12:29:36 -0400 Received: from mms.wifi.mm-sol.com (unknown [37.157.136.206]) by extserv.mm-sol.com (Postfix) with ESMTPSA id 11ABB4F882; Wed, 3 Sep 2014 19:29:34 +0300 (EEST) From: Georgi Djakov To: linus.walleij@linaro.org, galak@codeaurora.org, bjorn.andersson@sonymobile.com, agross@codeaurora.org Cc: robh+dt@kernel.org, mark.rutland@arm.com, grant.likely@linaro.org, sboyd@codeaurora.org, iivanov@mm-sol.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Georgi Djakov Subject: [PATCH v4 2/4] dt: Document Qualcomm APQ8084 pinctrl binding Date: Wed, 3 Sep 2014 19:28:14 +0300 Message-Id: <1409761696-15435-3-git-send-email-gdjakov@mm-sol.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1409761696-15435-1-git-send-email-gdjakov@mm-sol.com> References: <1409761696-15435-1-git-send-email-gdjakov@mm-sol.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Define a new binding for the Qualcomm TLMM (Top-Level Mode Mux) based pin controller inside the APQ8084. Acked-by: Bjorn Andersson Signed-off-by: Georgi Djakov --- .../bindings/pinctrl/qcom,apq8084-pinctrl.txt | 179 ++++++++++++++++++++ 1 file changed, 179 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,apq8084-pinctrl.txt diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,apq8084-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,apq8084-pinctrl.txt new file mode 100644 index 0000000..ffafa19 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/qcom,apq8084-pinctrl.txt @@ -0,0 +1,179 @@ +Qualcomm APQ8084 TLMM block + +This binding describes the Top Level Mode Multiplexer block found in the +MSM8960 platform. + +- compatible: + Usage: required + Value type: + Definition: must be "qcom,apq8084-pinctrl" + +- reg: + Usage: required + Value type: + Definition: the base address and size of the TLMM register space. + +- interrupts: + Usage: required + Value type: + Definition: should specify the TLMM summary IRQ. + +- interrupt-controller: + Usage: required + Value type: + Definition: identifies this node as an interrupt controller + +- #interrupt-cells: + Usage: required + Value type: + Definition: must be 2. Specifying the pin number and flags, as defined + in + +- gpio-controller: + Usage: required + Value type: + Definition: identifies this node as a gpio controller + +- #gpio-cells: + Usage: required + Value type: + Definition: must be 2. Specifying the pin number and flags, as defined + in + +Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for +a general description of GPIO and interrupt bindings. + +Please refer to pinctrl-bindings.txt in this directory for details of the +common pinctrl bindings used by client devices, including the meaning of the +phrase "pin configuration node". + +The pin configuration nodes act as a container for an abitrary number of +subnodes. Each of these subnodes represents some desired configuration for a +pin, a group, or a list of pins or groups. This configuration can include the +mux function to select on those pin(s)/group(s), and various pin configuration +parameters, such as pull-up, drive strength, etc. + + +PIN CONFIGURATION NODES: + +The name of each subnode is not important; all subnodes should be enumerated +and processed purely based on their content. + +Each subnode only affects those parameters that are explicitly listed. In +other words, a subnode that lists a mux function but no pin configuration +parameters implies no information about any pin configuration parameters. +Similarly, a pin subnode that describes a pullup parameter implies no +information about e.g. the mux function. + + +The following generic properties as defined in pinctrl-bindings.txt are valid +to specify in a pin configuration subnode: + +- pins: + Usage: required + Value type: + Definition: List of gpio pins affected by the properties specified in + this subnode. Valid pins are: + gpio0-gpio146, + sdc1_clk, + sdc1_cmd, + sdc1_data + sdc2_clk, + sdc2_cmd, + sdc2_data + +- function: + Usage: required + Value type: + Definition: Specify the alternative function to be configured for the + specified pins. Functions are only valid for gpio pins. + Valid values are: + adsp_ext, audio_ref, blsp_i2c1, blsp_i2c2, blsp_i2c3, + blsp_i2c4, blsp_i2c5, blsp_i2c6, blsp_i2c7, blsp_i2c8, + blsp_i2c9, blsp_i2c10, blsp_i2c11, blsp_i2c12, + blsp_spi1, blsp_spi2, blsp_spi3, blsp_spi4, blsp_spi5, + blsp_spi6, blsp_spi7, blsp_spi8, blsp_spi9, blsp_spi10, + blsp_spi11, blsp_spi12, blsp_uart1, blsp_uart2, blsp_uart3, + blsp_uart4, blsp_uart5, blsp_uart6, blsp_uart7, blsp_uart8, + blsp_uart9, blsp_uart10, blsp_uart11, blsp_uart12, + blsp_uim1, blsp_uim2, blsp_uim3, blsp_uim4, blsp_uim5, + blsp_uim6, blsp_uim7, blsp_uim8, blsp_uim9, blsp_uim10, + blsp_uim11, blsp_uim12, cam_mclk0, cam_mclk1, cam_mclk2, + cam_mclk3, cci_async, cci_async_in0, cci_i2c0, cci_i2c1, + cci_timer0, cci_timer1, cci_timer2, cci_timer3, cci_timer4, + edp_hpd, gcc_gp1, gcc_gp2, gcc_gp3, gcc_obt, gcc_vtt,i + gp_mn, gp_pdm0, gp_pdm1, gp_pdm2, gp0_clk, gp1_clk, gpio, + hdmi_cec, hdmi_ddc, hdmi_dtest, hdmi_hpd, hdmi_rcv, hsic, + ldo_en, ldo_update, mdp_vsync, pci_e0, pci_e0_n, pci_e0_rst, + pci_e1, pci_e1_rst, pci_e1_rst_n, pci_e1_clkreq_n, pri_mi2s, + qua_mi2s, sata_act, sata_devsleep, sata_devsleep_n, + sd_write, sdc_emmc_mode, sdc3, sdc4, sec_mi2s, slimbus, + spdif_tx, spkr_i2s, spkr_i2s_ws, spss_geni, ter_mi2s, tsif1, + tsif2, uim, uim_batt_alarm + +- bias-disable: + Usage: optional + Value type: + Definition: The specified pins should be configued as no pull. + +- bias-pull-down: + Usage: optional + Value type: + Definition: The specified pins should be configued as pull down. + +- bias-pull-up: + Usage: optional + Value type: + Definition: The specified pins should be configued as pull up. + +- output-high: + Usage: optional + Value type: + Definition: The specified pins are configured in output mode, driven + high. + Not valid for sdc pins. + +- output-low: + Usage: optional + Value type: + Definition: The specified pins are configured in output mode, driven + low. + Not valid for sdc pins. + +- drive-strength: + Usage: optional + Value type: + Definition: Selects the drive strength for the specified pins, in mA. + Valid values are: 2, 4, 6, 8, 10, 12, 14 and 16 + +Example: + + tlmm: pinctrl@fd510000 { + compatible = "qcom,apq8084-pinctrl"; + reg = <0xfd510000 0x4000>; + + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + interrupts = <0 208 0>; + + uart2: uart2-default { + mux { + pins = "gpio4", "gpio5"; + function = "blsp_uart2"; + }; + + tx { + pins = "gpio4"; + drive-strength = <4>; + bias-disable; + }; + + rx { + pins = "gpio5"; + drive-strength = <2>; + bias-pull-up; + }; + }; + };