From patchwork Fri Jun 4 17:27:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephan Gerhold X-Patchwork-Id: 12300377 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F000EC4743D for ; Fri, 4 Jun 2021 17:31:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DB25561405 for ; Fri, 4 Jun 2021 17:31:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230319AbhFDRdf (ORCPT ); Fri, 4 Jun 2021 13:33:35 -0400 Received: from mo4-p01-ob.smtp.rzone.de ([81.169.146.165]:23158 "EHLO mo4-p01-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230261AbhFDRdf (ORCPT ); Fri, 4 Jun 2021 13:33:35 -0400 ARC-Seal: i=1; a=rsa-sha256; t=1622827904; cv=none; d=strato.com; s=strato-dkim-0002; b=m9pFcaPadHwKAQEiNm3NeyzwZTNTG1NGHkHfbbcR5LtqzezLmsoq0rcB7beJQCyHom zMLP0isUqNs5vFKqjMm7UPVzIQzUGJtoSEkzUVzAMmMVWE8AcDEyysx86Zc6CbFfqGUg l98Uv1Eebu1/6WHDuP4s4dDaBVZ2Bf9/kWPzHAJpahEtvnQOQ3SPM6hLRwsi/MGqCfsP cd52arDhQiQBDAjp0KDtGu686Ci6mm5ED+yyhYs4l/w4rXhRO5vGdFge1umS2tF6UvB2 OYYb87uZUs5aGjsFYg6wgow4JIQEndFlx3eBTw8ARcnjVTXjhPV14eMR6KEsNYqKKj75 Nx1Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; t=1622827904; s=strato-dkim-0002; d=strato.com; h=Message-Id:Date:Subject:Cc:To:From:Cc:Date:From:Subject:Sender; bh=LVLr555nUQEvEYgAf4PXdZYCbzgO3vN/QlLUV+4x5jY=; b=IR7/Ylqstp3O94+PLActKSdeiHBhVZVZXlLxoVoBiiZl/m1FlaT82uoJkWeNiJOcr5 Qxj+sicRyWxJMoA4q9MS4RWImtM0XgdTAtVZqQ/uq+vRJlp0AJfy4qzJ2Fgc0kG6nPgG eaew965VdgiKkCKjIxhGYZUUAS1xRFAaPhdMnwSeAmcOpe1eliFZclZquD2vYR0NgSPE SqkaI2HHrXbpbLGgfHmHaNpayDY1o+2PkN+3kZ4fY2g+/POMUK5qO+qZaGzbAycigw/G EeGz9RiYSqcbuFftZp41PD/xU6bgPvcYuo2mkVW9oD4bwBtlU/g/asyPKr03RXcL6k0l f1Pw== ARC-Authentication-Results: i=1; strato.com; dkim=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1622827904; s=strato-dkim-0002; d=gerhold.net; h=Message-Id:Date:Subject:Cc:To:From:Cc:Date:From:Subject:Sender; bh=LVLr555nUQEvEYgAf4PXdZYCbzgO3vN/QlLUV+4x5jY=; b=NH0D9LhDFWDAeo9K2dT2Ai7mcPQzc2FOBs7dQ73CpmVlguKCCI6wlcghIuWDKpyBrE xzL67P0XWmNJLpeqkkHWgMna6vhxWSa/39BToUFnomgO7+/edMTb56bTapfuOzWRkSWy 7y3QTLIFeSRQn+NZMuD8Y2HIlC/6KWZ9xJb7u1EoWjtxB2g17Ue6E2eML0ydQ5GuzAt5 nnt23bAhdl3t6ZQBXvG3dMBZZIgD1IPmPO7eUvL1s+FPZJkZmevsXbXeIL0H78Q0bLSt xke8G7XaxAzisNxjtJuaiNz7PrbGDg8nFXmPtFl5aVRfZOhRrBKMrI6Nt1t/kBUQb8mI d1iA== Authentication-Results: strato.com; dkim=none X-RZG-AUTH: ":P3gBZUipdd93FF5ZZvYFPugejmSTVR2nRPhVORvLd4SsytBXS7IYBkLahKxB5m6Pvxo=" X-RZG-CLASS-ID: mo00 Received: from droid.. by smtp.strato.de (RZmta 47.27.2 DYNA|AUTH) with ESMTPSA id y01375x54HVhH5X (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Fri, 4 Jun 2021 19:31:43 +0200 (CEST) From: Stephan Gerhold To: Bjorn Andersson Cc: Andy Gross , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Michael Srba , Stephan Gerhold Subject: [PATCH 1/5] arm64: dts: qcom: msm8916-samsung-a2015: Add touch key Date: Fri, 4 Jun 2021 19:27:38 +0200 Message-Id: <20210604172742.10593-1-stephan@gerhold.net> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The Samsung Galaxy A3/A5 both have two capacitive touch keys, connected to an ABOV MCU. It implements the same interface as implemented by the tm2-touchkey driver and works just fine with the coreriver,tc360-touchkey compatible. It's probably actually some Samsung-specific interface that they implement with different MCUs. Note that for some reason Samsung decided to connect this to GPIOs where no hardware I2C bus is available, so we need to fall back to software bit-banging using i2c-gpio. The vdd/vcc-supply is board-specific and will be added separately for a3u/a5u. Co-developed-by: Michael Srba Signed-off-by: Michael Srba Signed-off-by: Stephan Gerhold --- .../qcom/msm8916-samsung-a2015-common.dtsi | 45 +++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi index 230ba3ce3277..3c77e7ef9eda 100644 --- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi @@ -95,6 +95,35 @@ muic: extcon@25 { pinctrl-0 = <&muic_int_default>; }; }; + + i2c-tkey { + compatible = "i2c-gpio"; + sda-gpios = <&msmgpio 16 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; + scl-gpios = <&msmgpio 17 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; + + pinctrl-names = "default"; + pinctrl-0 = <&tkey_i2c_default>; + + #address-cells = <1>; + #size-cells = <0>; + + touchkey: touchkey@20 { + /* Note: Actually an ABOV MCU that implements same interface */ + compatible = "coreriver,tc360-touchkey"; + reg = <0x20>; + + interrupt-parent = <&msmgpio>; + interrupts = <98 IRQ_TYPE_EDGE_FALLING>; + + /* vcc/vdd-supply are board-specific */ + vddio-supply = <&pm8916_l6>; + + linux,keycodes = ; + + pinctrl-names = "default"; + pinctrl-0 = <&tkey_default>; + }; + }; }; &blsp_i2c2 { @@ -333,6 +362,22 @@ muic_int_default: muic-int-default { bias-disable; }; + tkey_default: tkey-default { + pins = "gpio98"; + function = "gpio"; + + drive-strength = <2>; + bias-disable; + }; + + tkey_i2c_default: tkey-i2c-default { + pins = "gpio16", "gpio17"; + function = "gpio"; + + drive-strength = <2>; + bias-disable; + }; + tsp_en_default: tsp-en-default { pins = "gpio73"; function = "gpio"; From patchwork Fri Jun 4 17:27:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephan Gerhold X-Patchwork-Id: 12300375 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1320AC4743F for ; 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dkim=none X-RZG-AUTH: ":P3gBZUipdd93FF5ZZvYFPugejmSTVR2nRPhVORvLd4SsytBXS7IYBkLahKxB5m6Pvxo=" X-RZG-CLASS-ID: mo00 Received: from droid.. by smtp.strato.de (RZmta 47.27.2 DYNA|AUTH) with ESMTPSA id y01375x54HViH5Y (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Fri, 4 Jun 2021 19:31:44 +0200 (CEST) From: Stephan Gerhold To: Bjorn Andersson Cc: Andy Gross , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Michael Srba , Stephan Gerhold Subject: [PATCH 2/5] arm64: dts: qcom: msm8916-samsung-a3u: Add touch key regulators Date: Fri, 4 Jun 2021 19:27:39 +0200 Message-Id: <20210604172742.10593-2-stephan@gerhold.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210604172742.10593-1-stephan@gerhold.net> References: <20210604172742.10593-1-stephan@gerhold.net> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Michael Srba The touch key MCU and LED is supplied by two separate fixed regulators that can be enabled through GPIO 86 and 60. Add them to the device tree. Signed-off-by: Michael Srba [stephan: extend commit message] Signed-off-by: Stephan Gerhold --- .../boot/dts/qcom/msm8916-samsung-a3u-eur.dts | 47 +++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a3u-eur.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-a3u-eur.dts index 661f41ad978b..6cc2eaeb1d33 100644 --- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a3u-eur.dts +++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a3u-eur.dts @@ -20,6 +20,37 @@ reg_panel_vdd3: regulator-panel-vdd3 { pinctrl-names = "default"; pinctrl-0 = <&panel_vdd3_default>; }; + + reg_touch_key: regulator-touch-key { + compatible = "regulator-fixed"; + regulator-name = "touch_key"; + regulator-min-microvolt = <2800000>; + regulator-max-microvolt = <2800000>; + + gpio = <&msmgpio 86 GPIO_ACTIVE_HIGH>; + enable-active-high; + + pinctrl-names = "default"; + pinctrl-0 = <&tkey_en_default>; + }; + + reg_key_led: regulator-key-led { + compatible = "regulator-fixed"; + regulator-name = "key_led"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + + gpio = <&msmgpio 60 GPIO_ACTIVE_HIGH>; + enable-active-high; + + pinctrl-names = "default"; + pinctrl-0 = <&tkey_led_en_default>; + }; +}; + +&touchkey { + vcc-supply = <®_touch_key>; + vdd-supply = <®_key_led>; }; &accelerometer { @@ -81,6 +112,22 @@ panel_vdd3_default: panel-vdd3-default { bias-disable; }; + tkey_en_default: tkey-en-default { + pins = "gpio86"; + function = "gpio"; + + drive-strength = <2>; + bias-disable; + }; + + tkey_led_en_default: tkey-led-en-default { + pins = "gpio60"; + function = "gpio"; + + drive-strength = <2>; + bias-disable; + }; + ts_int_default: ts-int-default { pins = "gpio13"; function = "gpio"; From patchwork Fri Jun 4 17:27:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephan Gerhold X-Patchwork-Id: 12300381 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 47699C48BE5 for ; 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dkim=none X-RZG-AUTH: ":P3gBZUipdd93FF5ZZvYFPugejmSTVR2nRPhVORvLd4SsytBXS7IYBkLahKxB5m6Pvxo=" X-RZG-CLASS-ID: mo00 Received: from droid.. by smtp.strato.de (RZmta 47.27.2 DYNA|AUTH) with ESMTPSA id y01375x54HViH5Z (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Fri, 4 Jun 2021 19:31:44 +0200 (CEST) From: Stephan Gerhold To: Bjorn Andersson Cc: Andy Gross , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Michael Srba , Stephan Gerhold Subject: [PATCH 3/5] arm64: dts: qcom: msm8916-samsung-a5u: Add touch key regulator Date: Fri, 4 Jun 2021 19:27:40 +0200 Message-Id: <20210604172742.10593-3-stephan@gerhold.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210604172742.10593-1-stephan@gerhold.net> References: <20210604172742.10593-1-stephan@gerhold.net> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On the Samsung Galaxy A5 the touch key is supplied by a single fixed regulator (enabled via GPIO 97) that supplies both MCU and LED. Add it to the device tree. Signed-off-by: Stephan Gerhold --- .../boot/dts/qcom/msm8916-samsung-a5u-eur.dts | 26 +++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts index dd35c3344358..c2eff5aebf85 100644 --- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts +++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts @@ -7,6 +7,19 @@ / { model = "Samsung Galaxy A5U (EUR)"; compatible = "samsung,a5u-eur", "qcom,msm8916"; + + reg_touch_key: regulator-touch-key { + compatible = "regulator-fixed"; + regulator-name = "touch_key"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + + gpio = <&msmgpio 97 GPIO_ACTIVE_HIGH>; + enable-active-high; + + pinctrl-names = "default"; + pinctrl-0 = <&tkey_en_default>; + }; }; &accelerometer { @@ -42,7 +55,20 @@ iris { }; }; +&touchkey { + vcc-supply = <®_touch_key>; + vdd-supply = <®_touch_key>; +}; + &msmgpio { + tkey_en_default: tkey-en-default { + pins = "gpio97"; + function = "gpio"; + + drive-strength = <2>; + bias-disable; + }; + ts_int_default: ts-int-default { pins = "gpio13"; function = "gpio"; From patchwork Fri Jun 4 17:27:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephan Gerhold X-Patchwork-Id: 12300379 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DB46BC48BD1 for ; Fri, 4 Jun 2021 17:31:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C53306108E for ; 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dkim=none X-RZG-AUTH: ":P3gBZUipdd93FF5ZZvYFPugejmSTVR2nRPhVORvLd4SsytBXS7IYBkLahKxB5m6Pvxo=" X-RZG-CLASS-ID: mo00 Received: from droid.. by smtp.strato.de (RZmta 47.27.2 DYNA|AUTH) with ESMTPSA id y01375x54HVjH5a (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Fri, 4 Jun 2021 19:31:45 +0200 (CEST) From: Stephan Gerhold To: Bjorn Andersson Cc: Andy Gross , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Michael Srba , Stephan Gerhold Subject: [PATCH 4/5] arm64: dts: qcom: msm8916-samsung-a2015: Add rt5033 battery Date: Fri, 4 Jun 2021 19:27:41 +0200 Message-Id: <20210604172742.10593-4-stephan@gerhold.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210604172742.10593-1-stephan@gerhold.net> References: <20210604172742.10593-1-stephan@gerhold.net> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The Samsung Galaxy A3/A5 use a Richtek RT5033 PMIC as battery fuel gauge, charger, flash LED and for some regulators. For now, only add the fuel gauge/battery device to the device tree, so we can check the remaining battery percentage. The other RT5033 drivers need some more work first before they can be used properly. Signed-off-by: Stephan Gerhold --- .../qcom/msm8916-samsung-a2015-common.dtsi | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi index 3c77e7ef9eda..9a6988ded29d 100644 --- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi @@ -151,6 +151,20 @@ magnetometer@12 { }; }; +&blsp_i2c4 { + status = "okay"; + + battery@35 { + compatible = "richtek,rt5033-battery"; + reg = <0x35>; + interrupt-parent = <&msmgpio>; + interrupts = <121 IRQ_TYPE_EDGE_BOTH>; + + pinctrl-names = "default"; + pinctrl-0 = <&fg_alert_default>; + }; +}; + &blsp1_uart2 { status = "okay"; }; @@ -313,6 +327,14 @@ accel_int_default: accel-int-default { bias-disable; }; + fg_alert_default: fg-alert-default { + pins = "gpio121"; + function = "gpio"; + + drive-strength = <2>; + bias-disable; + }; + gpio_keys_default: gpio-keys-default { pins = "gpio107", "gpio109"; function = "gpio"; From patchwork Fri Jun 4 17:27:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephan Gerhold X-Patchwork-Id: 12300383 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7E708C49360 for ; Fri, 4 Jun 2021 17:31:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B9D96108E for ; Fri, 4 Jun 2021 17:31:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231208AbhFDRdi (ORCPT ); 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The clock setup for the NFC chip is a bit special (although this seems to be a common approach used for Qualcomm devices with NFC): The NFC chip has an output GPIO that is asserted whenever the clock is needed to function properly. On the A3/A5 this is wired up to PM8916 GPIO2, which is then configured with a special function (NFC_CLK_REQ or BB_CLK2_REQ). Enabling the rpmcc RPM_SMD_BB_CLK2_PIN clock will then instruct PM8916 to automatically enable the clock whenever the NFC chip requests it. The advantage is that the clock is only enabled when needed and we don't need to manage it ourselves from the NFC driver. Note that for some reason Samsung decided to connect the I2C pins to GPIOs where no hardware I2C bus is available, so we need to fall back to software bit-banging with i2c-gpio. Cc: Krzysztof Kozlowski Signed-off-by: Stephan Gerhold Acked-by: Krzysztof Kozlowski --- .../qcom/msm8916-samsung-a2015-common.dtsi | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi index 9a6988ded29d..9b4b7de7cec2 100644 --- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi @@ -4,6 +4,7 @@ #include #include #include +#include / { aliases { @@ -124,6 +125,34 @@ touchkey: touchkey@20 { pinctrl-0 = <&tkey_default>; }; }; + + i2c-nfc { + compatible = "i2c-gpio"; + sda-gpios = <&msmgpio 0 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; + scl-gpios = <&msmgpio 1 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; + + pinctrl-names = "default"; + pinctrl-0 = <&nfc_i2c_default>; + + #address-cells = <1>; + #size-cells = <0>; + + nfc@27 { + compatible = "samsung,s3fwrn5-i2c"; + reg = <0x27>; + + interrupt-parent = <&msmgpio>; + interrupts = <21 IRQ_TYPE_EDGE_RISING>; + + en-gpios = <&msmgpio 20 GPIO_ACTIVE_HIGH>; + wake-gpios = <&msmgpio 49 GPIO_ACTIVE_HIGH>; + + clocks = <&rpmcc RPM_SMD_BB_CLK2_PIN>; + + pinctrl-names = "default"; + pinctrl-0 = <&nfc_default &nfc_clk_req>; + }; + }; }; &blsp_i2c2 { @@ -384,6 +413,30 @@ muic_int_default: muic-int-default { bias-disable; }; + nfc_default: nfc-default { + pins = "gpio20", "gpio49"; + function = "gpio"; + + drive-strength = <2>; + bias-disable; + + irq { + pins = "gpio21"; + function = "gpio"; + + drive-strength = <2>; + bias-pull-down; + }; + }; + + nfc_i2c_default: nfc-i2c-default { + pins = "gpio0", "gpio1"; + function = "gpio"; + + drive-strength = <2>; + bias-disable; + }; + tkey_default: tkey-default { pins = "gpio98"; function = "gpio"; @@ -408,3 +461,14 @@ tsp_en_default: tsp-en-default { bias-disable; }; }; + +&pm8916_gpios { + nfc_clk_req: nfc-clk-req { + pins = "gpio2"; + function = "func1"; + + input-enable; + bias-disable; + power-source = ; + }; +};