From patchwork Tue Feb 7 13:55:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abel Vesa X-Patchwork-Id: 651422 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 79A40C64EC5 for ; Tue, 7 Feb 2023 13:56:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231951AbjBGN4r (ORCPT ); Tue, 7 Feb 2023 08:56:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231771AbjBGN4l (ORCPT ); Tue, 7 Feb 2023 08:56:41 -0500 Received: from mail-wr1-x431.google.com (mail-wr1-x431.google.com [IPv6:2a00:1450:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A76A932E49 for ; Tue, 7 Feb 2023 05:56:14 -0800 (PST) Received: by mail-wr1-x431.google.com with SMTP id y1so13646216wru.2 for ; Tue, 07 Feb 2023 05:56:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=QX4rZ/apusxA+kOocMUgPZzFJ0GB7RlYqxdsd8KGKjw=; b=ZePF7sbU5Y7OjGS2yW0g9dLDgyFY7/XNsDvb4KSI8zVo4duMujEAIRIDEAYzgW/aJA FXn4Dgir0houDF4USc1XH2s73/6rqJurfSkOeT1oH1oxUfxBf6PCNk3HVe/YGNwhKxjZ qPZVgPpkhtfd0Ru0984YUutdfo1dTodUWIjs4lNTELSKRLfCXPDs0+9zz1wsd8bIIZFl iyjbxsWzCmYzqO7DjEQkem0WgEleR8XNZPpIIvOCgElV+Tx2q5aeKr9ebSPBCsaKUIbz Z1pxs8ovrpq5wYQf/FbdwaBu0nh/mBbWqiGn3+0OHZ52xsseHlNpqcNp+POJSV7GzykX 629A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=QX4rZ/apusxA+kOocMUgPZzFJ0GB7RlYqxdsd8KGKjw=; b=EuUo4he/9IMqxigbTlgd65CNd8AkLd0HhLhSkX5gJhAn3UebxYedQIXhX82gKAcaVL 7ZirEZVEtrG4bIuxIn7ucKyHUPRPjbIh6zA+smkomBhS92vC8eNOoOXAr4pC9Ra8siIO 5ZELG/PJwY6scK8Pw7cBFiWo1HpgFV9Bur5wpdmS1V/9G3xmPlAK0qSVq81/y3A2cZcK 9vtqvpCLEe1+FAU3pCFsNe/4T2waY6RPJECu2dg/UtXECUCFO+cLx3457Ko4L7uIj2Hj QzfhxvuF//+kbzjB1M3AWjK3cyuNxu8FhI7xVlcYJ1GNN73fpfoDmfBSicZOX0Wda+MB 67iA== X-Gm-Message-State: AO0yUKW50M0f+IIK4RtVDcTmyw88sJxTPdZgtQYteln3aRLT5qTqeXsd dMHzKMYuc8VxNK2ep39SRjqY4w== X-Google-Smtp-Source: AK7set/3HsxRPjRdhDnMoTIKD5/HI3EB5DMI/wZsOGOaUNEUdIzsU4vzJeppub9ye2E67JzGIA9cbA== X-Received: by 2002:adf:dc04:0:b0:2c3:ea92:3494 with SMTP id t4-20020adfdc04000000b002c3ea923494mr2499644wri.55.1675778156573; Tue, 07 Feb 2023 05:55:56 -0800 (PST) Received: from hackbox.lan ([94.52.112.99]) by smtp.gmail.com with ESMTPSA id p10-20020a5d59aa000000b002be5401ef5fsm11611312wrr.39.2023.02.07.05.55.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Feb 2023 05:55:56 -0800 (PST) From: Abel Vesa To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Lee Jones , Rob Herring , Krzysztof Kozlowski , "vkoul@kernel.org" , Kishon Vijay Abraham I , Johan Hovold Cc: linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, Linux Kernel Mailing List Subject: [PATCH v4 1/7] dt-bindings: phy: Add qcom, snps-eusb2-repeater schema file Date: Tue, 7 Feb 2023 15:55:45 +0200 Message-Id: <20230207135551.1418637-2-abel.vesa@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230207135551.1418637-1-abel.vesa@linaro.org> References: <20230207135551.1418637-1-abel.vesa@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The SM8550 SoC uses Synopsis eUSB2 repeater found in PM8550b. Add a dt-binding schema for the new driver. Signed-off-by: Abel Vesa --- The v3 (rfc) is here: https://lore.kernel.org/all/20230202133816.4026990-3-abel.vesa@linaro.org/ Changes since v3: * made this patch the first one in the series to fix the binding check for the 2nd patch. * dropped the compatible for pmic in the example. This is due to the dependency between this patch and the next one. .../phy/qcom,snps-eusb2-repeater.yaml | 48 +++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml diff --git a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml new file mode 100644 index 000000000000..54afab7e21fb --- /dev/null +++ b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml @@ -0,0 +1,48 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/qcom,snps-eusb2-repeater.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Synopsis eUSB2 to USB 2.0 repeater + +maintainers: + - Abel Vesa + +properties: + compatible: + const: qcom,pm8550b-eusb2-repeater + + reg: + maxItems: 1 + + "#phy-cells": + const: 0 + + vdd18-supply: true + + vdd3-supply: true + +required: + - compatible + - reg + - "#phy-cells" + +additionalProperties: false + +examples: + - | + #include + + pmic@7 { + reg = <0x7 SPMI_USID>; + #address-cells = <1>; + #size-cells = <0>; + + pm8550b_eusb2_repeater: phy@fd00 { + compatible = "qcom,pm8550b-eusb2-repeater"; + reg = <0xfd00>; + #phy-cells = <0>; + }; + }; +... From patchwork Tue Feb 7 13:55:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abel Vesa X-Patchwork-Id: 651420 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A3BFBC64EC5 for ; Tue, 7 Feb 2023 13:57:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231373AbjBGN5K (ORCPT ); Tue, 7 Feb 2023 08:57:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38110 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231556AbjBGN4o (ORCPT ); Tue, 7 Feb 2023 08:56:44 -0500 Received: from mail-wr1-x42c.google.com (mail-wr1-x42c.google.com [IPv6:2a00:1450:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E327A3A590 for ; Tue, 7 Feb 2023 05:56:16 -0800 (PST) Received: by mail-wr1-x42c.google.com with SMTP id r2so13628057wrv.7 for ; Tue, 07 Feb 2023 05:56:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=wknXjDaGXH+LX2K/TaaG7FdKylzkWnpWRhGp8pLhtGE=; b=CpsnTxFsn5qi50XjG1iAOSliAdXfjTiEkhuSOfCEbyx7GMkKl8B/UZ1xReJQgiESTn csRYg0SnxBQvUSDQHU2Pgt+yY2n96NOzDe7KoDCItV72Uc8gx2yL5ZOnqbIFMSP0vzv1 BFIuSY/02m/CzNIw7NwI5Y7yczO4eOR1PC0rk74e8RVSTy4HjprioE4lPZC4JZtE5nU3 Wy23uiE68t6fMEcTbbyHFTs0LP6ZqJp+bwtC0og02noA80LOEXZttPWR+nG7hiUe0UfY 7oDacN0uqd2NfdXexDl2gGA4v1NSPzU/3Vqx8PcPd4cPJKNXQiGywwKisBHrUlrZkZRO iXpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wknXjDaGXH+LX2K/TaaG7FdKylzkWnpWRhGp8pLhtGE=; b=rcAl9Sp2YUadrUKFVKqrFctD1AXrJO6MlOIoyStc2+mpaUAte6FTuxbfTdNpij3/60 ntH4SDFeSylD/LgQmqT3ot8y2DyDB0lzvRMg8JvqDey+xAYcQqT2utqLY6DycOwARubf uvozXYG3+CrKeSs0pfAa8f+23RAaSLp4CzGiCY9HcXA02DZW4SwqcxbSyIGNznDZiU7o 1MYqK0J8le/U2dx2ekgVXoiJE3NcL7aPAI0uy6JtybahqJ6o08xHJxpQpqB2suBRxwAP +BRHSQaFtC3mL+kzR9Hk7jQkSmw4kxaSqgsR8iEqDME2vGrnvEEJA0Pe3o2l1xC/txhW yChQ== X-Gm-Message-State: AO0yUKVq3OPfTnlS1uCE+J1KDgG0+q7psf+pTTHs6ddeioYkoS8FUJYz NOQwqjnASGU0J/KRUsLWsvkIKg== X-Google-Smtp-Source: AK7set+oRWPLZzVSZcYAw1/0txRXToUbZSBz46U8JnoNq2rVlETdGipEGRtWjRCQT7H1y/bd8csvWg== X-Received: by 2002:adf:f749:0:b0:2bd:f71a:5b32 with SMTP id z9-20020adff749000000b002bdf71a5b32mr2772989wrp.58.1675778160430; Tue, 07 Feb 2023 05:56:00 -0800 (PST) Received: from hackbox.lan ([94.52.112.99]) by smtp.gmail.com with ESMTPSA id p10-20020a5d59aa000000b002be5401ef5fsm11611312wrr.39.2023.02.07.05.55.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Feb 2023 05:56:00 -0800 (PST) From: Abel Vesa To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Lee Jones , Rob Herring , Krzysztof Kozlowski , "vkoul@kernel.org" , Kishon Vijay Abraham I , Johan Hovold Cc: linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, Linux Kernel Mailing List Subject: [PATCH v4 4/7] phy: qcom: Add QCOM SNPS eUSB2 repeater driver Date: Tue, 7 Feb 2023 15:55:48 +0200 Message-Id: <20230207135551.1418637-5-abel.vesa@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230207135551.1418637-1-abel.vesa@linaro.org> References: <20230207135551.1418637-1-abel.vesa@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org PM8550B contains a eUSB2 repeater used for making the eUSB2 from SM8550 USB 2.0 compliant. This can be modelled SW-wise as a Phy. So add a new phy driver for it. Signed-off-by: Abel Vesa --- The v3 (rfc) is here: https://lore.kernel.org/all/20230202133816.4026990-5-abel.vesa@linaro.org/ Changes since v3: * fixed all indentation issues and dropped a few blank lines to pass checkpatch * dropped shift defines as they were not used * dropped the repeater_mode as it was not used * dropped the of_node_get and of_node_put for of_node * dropped the comment related to regulators in eusb2_repeater_cfg, like Vinod suggested * dropped the initialization of ret in eusb2_repeater_init drivers/phy/qualcomm/Kconfig | 9 + drivers/phy/qualcomm/Makefile | 1 + .../phy/qualcomm/phy-qcom-eusb2-repeater.c | 259 ++++++++++++++++++ 3 files changed, 269 insertions(+) create mode 100644 drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig index 513322cdf83c..4850d48f31fa 100644 --- a/drivers/phy/qualcomm/Kconfig +++ b/drivers/phy/qualcomm/Kconfig @@ -121,6 +121,15 @@ config PHY_QCOM_SNPS_EUSB2 chipsets. The PHY is paired with a Synopsys DWC3 USB controller on Qualcomm SOCs. +config PHY_QCOM_EUSB2_REPEATER + tristate "Qualcomm SNPS eUSB2 Repeater Driver" + depends on OF && (ARCH_QCOM || COMPILE_TEST) + select GENERIC_PHY + help + Enable support for the USB high-speed SNPS eUSB2 repeater on Qualcomm + PMICs. The repeater is paired with a Synopsys eUSB2 Phy + on Qualcomm SOCs. + config PHY_QCOM_USB_HS tristate "Qualcomm USB HS PHY module" depends on USB_ULPI_BUS diff --git a/drivers/phy/qualcomm/Makefile b/drivers/phy/qualcomm/Makefile index b2c01665622b..de3dc9ccf067 100644 --- a/drivers/phy/qualcomm/Makefile +++ b/drivers/phy/qualcomm/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_PHY_QCOM_QMP_USB) += phy-qcom-qmp-usb.o obj-$(CONFIG_PHY_QCOM_QUSB2) += phy-qcom-qusb2.o obj-$(CONFIG_PHY_QCOM_SNPS_EUSB2) += phy-qcom-snps-eusb2.o +obj-$(CONFIG_PHY_QCOM_EUSB2_REPEATER) += phy-qcom-eusb2-repeater.o obj-$(CONFIG_PHY_QCOM_USB_HS) += phy-qcom-usb-hs.o obj-$(CONFIG_PHY_QCOM_USB_HSIC) += phy-qcom-usb-hsic.o obj-$(CONFIG_PHY_QCOM_USB_HS_28NM) += phy-qcom-usb-hs-28nm.o diff --git a/drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c b/drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c new file mode 100644 index 000000000000..3f265ac2df20 --- /dev/null +++ b/drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c @@ -0,0 +1,259 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2023, Linaro Limited + */ + +#include +#include +#include +#include +#include +#include +#include + +/* eUSB2 status registers */ +#define EUSB2_RPTR_STATUS 0x08 +#define RPTR_OK BIT(7) + +/* eUSB2 control registers */ +#define EUSB2_EN_CTL1 0x46 +#define EUSB2_RPTR_EN BIT(7) + +#define EUSB2_FORCE_EN_5 0xe8 +#define F_CLK_19P2M_EN BIT(6) + +#define EUSB2_FORCE_VAL_5 0xeD +#define V_CLK_19P2M_EN BIT(6) + +#define EUSB2_TUNE_IUSB2 0x51 +#define EUSB2_TUNE_SQUELCH_U 0x54 +#define EUSB2_TUNE_USB2_PREEM 0x57 + +#define QCOM_EUSB2_REPEATER_INIT_CFG(o, v) \ + { \ + .offset = o, \ + .val = v, \ + } + +struct eusb2_repeater_init_tbl { + unsigned int offset; + unsigned int val; +}; + +struct eusb2_repeater_cfg { + const struct eusb2_repeater_init_tbl *init_tbl; + int init_tbl_num; + const char * const *vreg_list; + int num_vregs; +}; + +struct eusb2_repeater { + struct device *dev; + struct regmap *regmap; + struct phy *phy; + struct regulator_bulk_data *vregs; + const struct eusb2_repeater_cfg *cfg; + u16 base; + enum phy_mode mode; +}; + +static const char * const pm8550b_vreg_l[] = { + "vdd18", "vdd3", +}; + +static const struct eusb2_repeater_init_tbl pm8550b_init_tbl[] = { + QCOM_EUSB2_REPEATER_INIT_CFG(EUSB2_TUNE_IUSB2, 0x8), + QCOM_EUSB2_REPEATER_INIT_CFG(EUSB2_TUNE_SQUELCH_U, 0x3), + QCOM_EUSB2_REPEATER_INIT_CFG(EUSB2_TUNE_USB2_PREEM, 0x5), +}; + +static const struct eusb2_repeater_cfg pm8550b_eusb2_cfg = { + .init_tbl = pm8550b_init_tbl, + .init_tbl_num = ARRAY_SIZE(pm8550b_init_tbl), + .vreg_list = pm8550b_vreg_l, + .num_vregs = ARRAY_SIZE(pm8550b_vreg_l), +}; + +static int eusb2_repeater_init_vregs(struct eusb2_repeater *rptr) +{ + int num = rptr->cfg->num_vregs; + struct device *dev = rptr->dev; + int i; + + rptr->vregs = devm_kcalloc(dev, num, sizeof(*rptr->vregs), GFP_KERNEL); + if (!rptr->vregs) + return -ENOMEM; + + for (i = 0; i < num; i++) + rptr->vregs[i].supply = rptr->cfg->vreg_list[i]; + + return devm_regulator_bulk_get(dev, num, rptr->vregs); +} + +static int eusb2_repeater_init(struct phy *phy) +{ + struct eusb2_repeater *rptr = phy_get_drvdata(phy); + const struct eusb2_repeater_init_tbl *init_tbl = rptr->cfg->init_tbl; + int num = rptr->cfg->init_tbl_num; + u32 val; + int ret; + int i; + + ret = regulator_bulk_enable(rptr->cfg->num_vregs, rptr->vregs); + if (ret) + return ret; + + regmap_update_bits(rptr->regmap, rptr->base + EUSB2_EN_CTL1, + EUSB2_RPTR_EN, EUSB2_RPTR_EN); + + for (i = 0; i < num; i++) + regmap_update_bits(rptr->regmap, + rptr->base + init_tbl[i].offset, + init_tbl[i].val, init_tbl[i].val); + + ret = regmap_read_poll_timeout(rptr->regmap, + rptr->base + EUSB2_RPTR_STATUS, val, + val & RPTR_OK, 10, 5); + if (ret) + dev_err(rptr->dev, "initialization timed-out\n"); + + return ret; +} + +static int eusb2_repeater_set_mode(struct phy *phy, + enum phy_mode mode, int submode) +{ + struct eusb2_repeater *rptr = phy_get_drvdata(phy); + + switch (mode) { + case PHY_MODE_USB_HOST: + /* + * CM.Lx is prohibited when repeater is already into Lx state as + * per eUSB 1.2 Spec. Below implement software workaround until + * PHY and controller is fixing seen observation. + */ + regmap_update_bits(rptr->regmap, rptr->base + EUSB2_FORCE_EN_5, + F_CLK_19P2M_EN, F_CLK_19P2M_EN); + regmap_update_bits(rptr->regmap, rptr->base + EUSB2_FORCE_VAL_5, + V_CLK_19P2M_EN, V_CLK_19P2M_EN); + break; + case PHY_MODE_USB_DEVICE: + /* + * In device mode clear host mode related workaround as there + * is no repeater reset available, and enable/disable of + * repeater doesn't clear previous value due to shared + * regulators (say host <-> device mode switch). + */ + regmap_update_bits(rptr->regmap, rptr->base + EUSB2_FORCE_EN_5, + F_CLK_19P2M_EN, 0); + regmap_update_bits(rptr->regmap, rptr->base + EUSB2_FORCE_VAL_5, + V_CLK_19P2M_EN, 0); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int eusb2_repeater_exit(struct phy *phy) +{ + struct eusb2_repeater *rptr = phy_get_drvdata(phy); + + return regulator_bulk_disable(rptr->cfg->num_vregs, rptr->vregs); +} + +static const struct phy_ops eusb2_repeater_ops = { + .init = eusb2_repeater_init, + .exit = eusb2_repeater_exit, + .set_mode = eusb2_repeater_set_mode, + .owner = THIS_MODULE, +}; + +static int eusb2_repeater_probe(struct platform_device *pdev) +{ + struct eusb2_repeater *rptr; + struct device *dev = &pdev->dev; + struct phy_provider *phy_provider; + struct device_node *np = dev->of_node; + u32 res; + int ret; + + rptr = devm_kzalloc(dev, sizeof(*rptr), GFP_KERNEL); + if (!rptr) + return -ENOMEM; + + rptr->dev = dev; + dev_set_drvdata(dev, rptr); + + rptr->cfg = of_device_get_match_data(dev); + if (!rptr->cfg) + return -EINVAL; + + rptr->regmap = dev_get_regmap(dev->parent, NULL); + if (!rptr->regmap) + return -ENODEV; + + ret = of_property_read_u32(np, "reg", &res); + if (ret < 0) + return ret; + + rptr->base = res; + + ret = eusb2_repeater_init_vregs(rptr); + if (ret < 0) { + dev_err(dev, "unable to get supplies\n"); + return ret; + } + + rptr->phy = devm_phy_create(dev, np, &eusb2_repeater_ops); + if (IS_ERR(rptr->phy)) { + dev_err(dev, "failed to create PHY: %d\n", ret); + return PTR_ERR(rptr->phy); + } + + phy_set_drvdata(rptr->phy, rptr); + + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + if (IS_ERR(phy_provider)) + return PTR_ERR(phy_provider); + + dev_info(dev, "Registered Qcom-eUSB2 repeater\n"); + + return 0; +} + +static int eusb2_repeater_remove(struct platform_device *pdev) +{ + struct eusb2_repeater *rptr = platform_get_drvdata(pdev); + + if (!rptr) + return 0; + + eusb2_repeater_exit(rptr->phy); + + return 0; +} + +static const struct of_device_id eusb2_repeater_of_match_table[] = { + { + .compatible = "qcom,pm8550b-eusb2-repeater", + .data = &pm8550b_eusb2_cfg, + }, + { }, +}; +MODULE_DEVICE_TABLE(of, eusb2_repeater_of_match_table); + +static struct platform_driver eusb2_repeater_driver = { + .probe = eusb2_repeater_probe, + .remove = eusb2_repeater_remove, + .driver = { + .name = "qcom-eusb2-repeater", + .of_match_table = eusb2_repeater_of_match_table, + }, +}; + +module_platform_driver(eusb2_repeater_driver); + +MODULE_DESCRIPTION("Qualcomm PMIC eUSB2 Repeater driver"); +MODULE_LICENSE("GPL"); From patchwork Tue Feb 7 13:55:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abel Vesa X-Patchwork-Id: 651421 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2C6E9C636CC for ; Tue, 7 Feb 2023 13:57:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232248AbjBGN5H (ORCPT ); Tue, 7 Feb 2023 08:57:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38436 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232201AbjBGN4n (ORCPT ); Tue, 7 Feb 2023 08:56:43 -0500 Received: from mail-wr1-x434.google.com (mail-wr1-x434.google.com [IPv6:2a00:1450:4864:20::434]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E46753A596 for ; Tue, 7 Feb 2023 05:56:16 -0800 (PST) Received: by mail-wr1-x434.google.com with SMTP id bk16so13614134wrb.11 for ; Tue, 07 Feb 2023 05:56:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=5nP2A5i34h6FhI1PmIGZwHqThelkL340fyNZ8uWjSxo=; b=VdzEKUA+I7BR/04OKzVJQzQLbpCpYeLoYwT+7MbmJwBzCXC8/Wz9dBXpicw1nu5t7K wPcXLo7jpe4VQnBgW6nM+ByBemVBAgt747KHH8XpV1yCtZedPB9s2ntVMAlVkvVOzGWJ bVhhWQkLCxPhB3zAJgXi57guzJWqe/gdNWLZsd5Ar9hLs6L+4zD4vJZmPsiJL4YvGWNq UgeGd21VezuELwjDjCuqUxM+GVIdrj1AOeIq5D98I4RmPqJ50zwKPFC9dqlitzTy/ZlT QHieExN+/CjvvdfwBMdpxpLH12Cu9I8mf7kbPFi47Px4LXJSY89ahz2E/hl6kkUiGyUl JyVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=5nP2A5i34h6FhI1PmIGZwHqThelkL340fyNZ8uWjSxo=; b=cc45RMcWJYHvkEeJ1gGiXvGL1RCHrWPylIfYmES3uZyhADpLi7xd7GtWJHT8jLVcds KA0064c5YbLOiDzxDbqdf+w8MjakK9jlvu5UK/T7EvU3LPDBOJCQfmT9pkUW1do7nF7A jkNV4eDUFS+dEY4MzqkDocL69FSrpZtM0lhf7TGaqj9a6oUvYNMxRaNnCOwIMrjk8oCi w/p3cli0KRvxhJAGdjP74rsU4wqDqUtTYDKf+Pb+r+qd4ccu4I0N9ihgV1A35cTDjURH wQd4g/7+SP/N3WcFG6rPWMWpUFP9vk4Rw6augr4tZlWSTyVv5IUnWSKcevzMnljA6D1M D/mQ== X-Gm-Message-State: AO0yUKXPAeg41C8uFz4clYse8ZFzQX0LzPE6kmCvBMG2TtYonFKSp2YM wlFhIXdtfxFXbE1AKQ7xBkM72g== X-Google-Smtp-Source: AK7set+L3zQVDlpG8ELGNddTYFVEar45muQRLY/0lkqS/38deLKHfGuV5eXNxsjES2KHz4jIs6x/Zg== X-Received: by 2002:adf:f3cc:0:b0:2c3:ea59:a8b with SMTP id g12-20020adff3cc000000b002c3ea590a8bmr2878259wrp.24.1675778161731; Tue, 07 Feb 2023 05:56:01 -0800 (PST) Received: from hackbox.lan ([94.52.112.99]) by smtp.gmail.com with ESMTPSA id p10-20020a5d59aa000000b002be5401ef5fsm11611312wrr.39.2023.02.07.05.56.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Feb 2023 05:56:01 -0800 (PST) From: Abel Vesa To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Lee Jones , Rob Herring , Krzysztof Kozlowski , "vkoul@kernel.org" , Kishon Vijay Abraham I , Johan Hovold Cc: linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, Linux Kernel Mailing List , Neil Armstrong Subject: [PATCH v4 5/7] phy: qcom: phy-qcom-snps-eusb2: Add support for eUSB2 repeater Date: Tue, 7 Feb 2023 15:55:49 +0200 Message-Id: <20230207135551.1418637-6-abel.vesa@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230207135551.1418637-1-abel.vesa@linaro.org> References: <20230207135551.1418637-1-abel.vesa@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Neil Armstrong For USB 2.0 compliance, eUSB2 needs a repeater. The PHY needs to initialize and reset it. So add repeater support Co-developed-by: Abel Vesa Signed-off-by: Abel Vesa Signed-off-by: Neil Armstrong --- The v3 (rfc) is here: https://lore.kernel.org/all/20230202133816.4026990-6-abel.vesa@linaro.org/ Changes since v3: * none drivers/phy/qualcomm/phy-qcom-snps-eusb2.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c b/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c index 23ec162cc3bd..703e2f23ea00 100644 --- a/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c @@ -128,6 +128,8 @@ struct qcom_snps_eusb2_hsphy { struct regulator_bulk_data vregs[EUSB2_NUM_VREGS]; enum phy_mode mode; + + struct phy *repeater; }; static int qcom_snps_eusb2_hsphy_set_mode(struct phy *p, enum phy_mode mode, int submode) @@ -136,7 +138,7 @@ static int qcom_snps_eusb2_hsphy_set_mode(struct phy *p, enum phy_mode mode, int phy->mode = mode; - return 0; + return phy_set_mode_ext(phy->repeater, mode, submode); } static void qcom_snps_eusb2_hsphy_write_mask(void __iomem *base, u32 offset, @@ -235,6 +237,12 @@ static int qcom_snps_eusb2_hsphy_init(struct phy *p) if (ret) return ret; + ret = phy_init(phy->repeater); + if (ret) { + dev_err(&p->dev, "repeater init failed. %d\n", ret); + goto disable_vreg; + } + ret = clk_prepare_enable(phy->ref_clk); if (ret) { dev_err(&p->dev, "failed to enable ref clock, %d\n", ret); @@ -342,6 +350,8 @@ static int qcom_snps_eusb2_hsphy_exit(struct phy *p) regulator_bulk_disable(ARRAY_SIZE(phy->vregs), phy->vregs); + phy_exit(phy->repeater); + return 0; } @@ -355,6 +365,7 @@ static const struct phy_ops qcom_snps_eusb2_hsphy_ops = { static int qcom_snps_eusb2_hsphy_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; struct qcom_snps_eusb2_hsphy *phy; struct phy_provider *phy_provider; struct phy *generic_phy; @@ -386,6 +397,12 @@ static int qcom_snps_eusb2_hsphy_probe(struct platform_device *pdev) if (ret) return dev_err_probe(dev, ret, "failed to get regulator supplies\n"); + + phy->repeater = devm_of_phy_get_by_index(dev, np, 0); + if (IS_ERR(phy->repeater)) + return dev_err_probe(dev, PTR_ERR(phy->repeater), + "failed to get repeater\n"); + generic_phy = devm_phy_create(dev, NULL, &qcom_snps_eusb2_hsphy_ops); if (IS_ERR(generic_phy)) { dev_err(dev, "failed to create phy %d\n", ret); From patchwork Tue Feb 7 13:55:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abel Vesa X-Patchwork-Id: 651419 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 345ACC636D6 for ; Tue, 7 Feb 2023 13:57:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229839AbjBGN5P (ORCPT ); Tue, 7 Feb 2023 08:57:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38278 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232292AbjBGN4p (ORCPT ); Tue, 7 Feb 2023 08:56:45 -0500 Received: from mail-wr1-x429.google.com (mail-wr1-x429.google.com [IPv6:2a00:1450:4864:20::429]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C556A36FCD for ; Tue, 7 Feb 2023 05:56:18 -0800 (PST) Received: by mail-wr1-x429.google.com with SMTP id d14so13616942wrr.9 for ; Tue, 07 Feb 2023 05:56:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=V1aUOJzlnvog/gfPWV5JW0Qf9tdncCWCmWydTboOvKw=; b=bO5sg5C5vYk9TdSOnLjR4vlhtn9sPiCyuwTtqnTTgWRlpu6ZIHi2AuSfyxwDUhH1E3 7iIfij9Fjz7f1MYJpQy2hjG1h8vjsYElgJEhcWCYbarfC1ZcxdyLCyd/IPGwYUz+3Mde oqQp5TY/prn2vOHVAiD4YbRNxJmoIEX9aMEGWawsmNYceIIZqF3dZuYM8TqTJFLpiItC gUZj8ZewAg+J/0uxy84V7Sd9T7B9STa6We5Gn5QUkuDdBa0eSe6ZESufOyJ8RqKi93Fd zZeqp4/kmqKAY2c8yu6aJKqcT81K8WZv25+Y4RCXZ0TR+A81ExbJ+Ite5QCLES6P4aWw A8eA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=V1aUOJzlnvog/gfPWV5JW0Qf9tdncCWCmWydTboOvKw=; b=5oS751O8bnzWq8+9dOHlpvTPch2KwsKybHrdjn8G49+b8v0s+L69XzVgUV5YXa7ywr l0xSc7bbNMdaq9nBWcY9ayFIOlcwlgifBRu8e1tOwNcClbZumP5SWClrdesAPf0SXdaX V2eJEIMbX/YDtlb4fjWamH54tTRsEpZiq7TFKkqz7vuMtQPEViSrGpNiiZC6exS7bWC+ KTnlfd0YtSmM9hwmNoSIuHvdKAkwGPpPL/wngXhxHqQ328KbnHogMc99fQNqQOD6kkGp ComJBiXnyB/wyD4d8j7+bOP9947vL97bKJZp2wIjKNOVC364G0KCMI4sU0qgrR6n097Z GaYw== X-Gm-Message-State: AO0yUKWwl9HWy/k6OjpKxy9iSvFNFq5tW71HNEH/TAd8hBFpa6PS33Hd 9QBrgeiSTCE3x42w2Pqa9kO4fw== X-Google-Smtp-Source: AK7set8/7pguR2nkrh5sfxWhRMJoc0cANOCX7qiQNTzv4aIYl17VUb020gXBfptdCuTi7LOG4aoGAA== X-Received: by 2002:a5d:6d82:0:b0:2c3:c138:e52d with SMTP id l2-20020a5d6d82000000b002c3c138e52dmr14202450wrs.4.1675778164473; Tue, 07 Feb 2023 05:56:04 -0800 (PST) Received: from hackbox.lan ([94.52.112.99]) by smtp.gmail.com with ESMTPSA id p10-20020a5d59aa000000b002be5401ef5fsm11611312wrr.39.2023.02.07.05.56.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Feb 2023 05:56:03 -0800 (PST) From: Abel Vesa To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Lee Jones , Rob Herring , Krzysztof Kozlowski , "vkoul@kernel.org" , Kishon Vijay Abraham I , Johan Hovold Cc: linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, Linux Kernel Mailing List Subject: [PATCH v4 7/7] arm64: dts: qcom: sm8550-mtp: Add eUSB2 repeater node Date: Tue, 7 Feb 2023 15:55:51 +0200 Message-Id: <20230207135551.1418637-8-abel.vesa@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230207135551.1418637-1-abel.vesa@linaro.org> References: <20230207135551.1418637-1-abel.vesa@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add the PMIC eUSB2 repeater node and add the usb-repeater property to the eUSB2 PHY to allow it to be controlled by the PHY driver. Signed-off-by: Abel Vesa --- The v3 (rfc) is here: https://lore.kernel.org/all/20230202133816.4026990-8-abel.vesa@linaro.org/ Changes since v3: * Dropped the phy-names property from usb_1_hsphy, like Dmitry suggested arch/arm64/boot/dts/qcom/sm8550-mtp.dts | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sm8550-mtp.dts b/arch/arm64/boot/dts/qcom/sm8550-mtp.dts index 56aab7cafcbc..6b6ec0fe5e5e 100644 --- a/arch/arm64/boot/dts/qcom/sm8550-mtp.dts +++ b/arch/arm64/boot/dts/qcom/sm8550-mtp.dts @@ -457,6 +457,11 @@ sdc2_card_det_n: sdc2-card-det-state { }; }; +&pm8550b_eusb2_repeater { + vdd18-supply = <&vreg_l15b_1p8>; + vdd3-supply = <&vreg_l5b_3p1>; +}; + &qupv3_id_0 { status = "okay"; }; @@ -563,6 +568,8 @@ &usb_1_hsphy { vdd-supply = <&vreg_l1e_0p88>; vdda12-supply = <&vreg_l3e_1p2>; + phys = <&pm8550b_eusb2_repeater>; + status = "okay"; };