From patchwork Sun Jun 27 05:24:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Baruch Siach X-Patchwork-Id: 12346673 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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 ABEB8C48BC2 for ; Sun, 27 Jun 2021 05:26:26 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5DF4E61C34 for ; Sun, 27 Jun 2021 05:26:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5DF4E61C34 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=tkos.co.il Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=I9GIBZnwb/Aqh6bzziiQ9lZ7pDBPukCKPiAB+m/ywC4=; b=V9GE6CoEwneuHW Z+GpgIboHDNcwDzbRXtiu/iH7DI+/OK2BaA1o7FM2eXB/4Ok+2kgG7hIEkGU5tOD0M3G41KVBWV7K Z/yNJKAl8EwmsEJLHRZCu4Ac+LSZa0D2BghikIV81b7gyv0J4zNQfKWcsj/MzQahfC5/A+Q9JaBYI 4+dnEf5x0r+JaBG2lvzUK3Mrh3n2fEt44NoZhub5kvq0YcT3WQeRV2jyLywTKzC5j4FoE3yK1CKt6 JQ268WH86GQCQBhFXw0ipbIZKfTWXZjfZBHP9OgajwkkXDv/+bbqUesDC7/nV/UK6L59212aA4y98 ac7NvfNP9DWvtcCMfOMw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lxNHf-00595Q-EX; Sun, 27 Jun 2021 05:24:43 +0000 Received: from guitar.tcltek.co.il ([192.115.133.116] helo=mx.tkos.co.il) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lxNHI-00592y-1d for linux-arm-kernel@lists.infradead.org; Sun, 27 Jun 2021 05:24:23 +0000 Received: from tarshish.tkos.co.il (unknown [10.0.8.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx.tkos.co.il (Postfix) with ESMTPS id 3A75C440432; Sun, 27 Jun 2021 08:24:09 +0300 (IDT) From: Baruch Siach To: Thierry Reding , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , Lee Jones Cc: Baruch Siach , Andy Gross , Bjorn Andersson , Balaji Prakash J , Rob Herring , Robert Marko , linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 1/3] pwm: driver for qualcomm ipq6018 pwm block Date: Sun, 27 Jun 2021 08:24:04 +0300 Message-Id: <305eacc9c57c2404795b6be76a08915808e23108.1624771446.git.baruch@tkos.co.il> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210626_222420_672961_6CFE98E8 X-CRM114-Status: GOOD ( 29.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Driver for the PWM block in Qualcomm IPQ6018 line of SoCs. Based on driver from downstream Codeaurora kernel tree. Removed support for older (V1) variants because I have no access to that hardware. Tested on IPQ6010 based hardware. Signed-off-by: Baruch Siach --- v4: Use div64_u64() to fix link for 32-bit targets ((kernel test robot , Uwe Kleine-König) v3: s/qcom,pwm-ipq6018/qcom,ipq6018-pwm/ (Rob Herring) Fix integer overflow on 32-bit targets (kernel test robot ) v2: Address Uwe Kleine-König review comments: Fix period calculation when out of range Don't set period larger than requested Remove PWM disable on configuration change Implement .apply instead of non-atomic .config/.enable/.disable Don't modify PWM on .request/.free Check pwm_div underflow Fix various code and comment formatting issues Other changes: Use u64 divisor safe division Remove now empty .request/.free --- drivers/pwm/Kconfig | 12 +++ drivers/pwm/Makefile | 1 + drivers/pwm/pwm-ipq.c | 238 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 251 insertions(+) create mode 100644 drivers/pwm/pwm-ipq.c diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index c76adedd58c9..08add845596f 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -260,6 +260,18 @@ config PWM_INTEL_LGM To compile this driver as a module, choose M here: the module will be called pwm-intel-lgm. +config PWM_IPQ + tristate "IPQ PWM support" + depends on ARCH_QCOM || COMPILE_TEST + depends on HAVE_CLK && HAS_IOMEM + help + Generic PWM framework driver for IPQ PWM block which supports + 4 pwm channels. Each of the these channels can be configured + independent of each other. + + To compile this driver as a module, choose M here: the module + will be called pwm-ipq. + config PWM_IQS620A tristate "Azoteq IQS620A PWM support" depends on MFD_IQS62X || COMPILE_TEST diff --git a/drivers/pwm/Makefile b/drivers/pwm/Makefile index 708840b7fba8..7402feae4b36 100644 --- a/drivers/pwm/Makefile +++ b/drivers/pwm/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_PWM_IMX1) += pwm-imx1.o obj-$(CONFIG_PWM_IMX27) += pwm-imx27.o obj-$(CONFIG_PWM_IMX_TPM) += pwm-imx-tpm.o obj-$(CONFIG_PWM_INTEL_LGM) += pwm-intel-lgm.o +obj-$(CONFIG_PWM_IPQ) += pwm-ipq.o obj-$(CONFIG_PWM_IQS620A) += pwm-iqs620a.o obj-$(CONFIG_PWM_JZ4740) += pwm-jz4740.o obj-$(CONFIG_PWM_KEEMBAY) += pwm-keembay.o diff --git a/drivers/pwm/pwm-ipq.c b/drivers/pwm/pwm-ipq.c new file mode 100644 index 000000000000..966b051573c8 --- /dev/null +++ b/drivers/pwm/pwm-ipq.c @@ -0,0 +1,238 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/* + * Copyright (c) 2016-2017, 2020 The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include + +#define CLK_SRC_FREQ (100*1000*1000) +#define MAX_PWM_DEVICES 4 + +/* + * Enable bit is set to enable output toggling in pwm device. + * Update bit is set to reflect the changed divider and high duration + * values in register. + */ +#define PWM_ENABLE 0x80000000 +#define PWM_UPDATE 0x40000000 + +/* The frequency range supported is 1Hz to 100MHz */ +#define MIN_PERIOD_NS 10 +#define MAX_PERIOD_NS 1000000000 + +/* + * The max value specified for each field is based on the number of bits + * in the pwm control register for that field + */ +#define MAX_PWM_CFG 0xFFFF + +#define PWM_CTRL_HI_SHIFT 16 + +#define PWM_CFG_REG0 0 /*PWM_DIV PWM_HI*/ +#define PWM_CFG_REG1 1 /*ENABLE UPDATE PWM_PRE_DIV*/ + +struct ipq_pwm_chip { + struct pwm_chip chip; + struct clk *clk; + void __iomem *mem; +}; + +static struct ipq_pwm_chip *to_ipq_pwm_chip(struct pwm_chip *chip) +{ + return container_of(chip, struct ipq_pwm_chip, chip); +} + +static unsigned ipq_pwm_reg_offset(struct pwm_device *pwm, unsigned reg) +{ + return ((pwm->hwpwm * 2) + reg) * 4; +} + +static void config_div_and_duty(struct pwm_device *pwm, int pre_div, + unsigned long long pwm_div, unsigned long period_ns, + unsigned long long duty_ns) +{ + unsigned long hi_dur; + unsigned long long quotient; + unsigned long val = 0; + struct ipq_pwm_chip *ipq_chip = to_ipq_pwm_chip(pwm->chip); + + /* + * high duration = pwm duty * (pwm div + 1) + * pwm duty = duty_ns / period_ns + */ + quotient = (pwm_div + 1) * duty_ns; + hi_dur = div64_u64(quotient, period_ns); + + val |= ((hi_dur & MAX_PWM_CFG) << PWM_CTRL_HI_SHIFT); + val |= (pwm_div & MAX_PWM_CFG); + writel(val, ipq_chip->mem + ipq_pwm_reg_offset(pwm, PWM_CFG_REG0)); + val = pre_div & MAX_PWM_CFG; + writel(val, ipq_chip->mem + ipq_pwm_reg_offset(pwm, PWM_CFG_REG1)); +} + +static int ipq_pwm_enable(struct pwm_device *pwm) +{ + struct ipq_pwm_chip *ipq_chip = to_ipq_pwm_chip(pwm->chip); + unsigned offset = ipq_pwm_reg_offset(pwm, PWM_CFG_REG1); + unsigned long val; + + val = readl(ipq_chip->mem + offset); + val |= PWM_ENABLE | PWM_UPDATE; + writel(val, ipq_chip->mem + offset); + + return 0; +} + +static void ipq_pwm_disable(struct pwm_device *pwm) +{ + struct ipq_pwm_chip *ipq_chip = to_ipq_pwm_chip(pwm->chip); + unsigned offset = ipq_pwm_reg_offset(pwm, PWM_CFG_REG1); + unsigned long val; + + val = readl(ipq_chip->mem + offset); + val |= PWM_UPDATE; + val &= ~PWM_ENABLE; + writel(val, ipq_chip->mem + offset); +} + +static int ipq_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, + const struct pwm_state *state) +{ + struct ipq_pwm_chip *ipq_chip = to_ipq_pwm_chip(chip); + unsigned long freq; + int pre_div, close_pre_div, close_pwm_div; + int pwm_div; + long long diff; + unsigned long rate = clk_get_rate(ipq_chip->clk); + unsigned long min_diff = rate; + uint64_t fin_ps; + u64 period_ns, duty_ns; + + if (state->period < MIN_PERIOD_NS) + return -ERANGE; + + period_ns = min_t(u64, state->period, MAX_PERIOD_NS); + duty_ns = min_t(u64, state->duty_cycle, period_ns); + + /* freq in Hz for period in nano second*/ + freq = div64_u64(NSEC_PER_SEC, period_ns); + fin_ps = div64_u64(NSEC_PER_SEC * 1000ULL, rate); + close_pre_div = MAX_PWM_CFG; + close_pwm_div = MAX_PWM_CFG; + + for (pre_div = 0; pre_div <= MAX_PWM_CFG; pre_div++) { + pwm_div = DIV64_U64_ROUND_CLOSEST(period_ns * 1000, + fin_ps * (pre_div + 1)); + pwm_div--; + if (pwm_div < 0 || pwm_div > MAX_PWM_CFG) + continue; + + diff = ((uint64_t)freq * (pre_div + 1) * (pwm_div + 1)) + - (uint64_t)rate; + + if (diff < 0) /* period larger than requested */ + continue; + if (diff == 0) { /* bingo */ + close_pre_div = pre_div; + close_pwm_div = pwm_div; + break; + } + if (diff < min_diff) { + min_diff = diff; + close_pre_div = pre_div; + close_pwm_div = pwm_div; + } + } + + /* config divider values for the closest possible frequency */ + config_div_and_duty(pwm, close_pre_div, close_pwm_div, + period_ns, duty_ns); + if (state->enabled) + ipq_pwm_enable(pwm); + else + ipq_pwm_disable(pwm); + + return 0; +} + +static struct pwm_ops ipq_pwm_ops = { + .apply = ipq_pwm_apply, + .owner = THIS_MODULE, +}; + +static int ipq_pwm_probe(struct platform_device *pdev) +{ + struct ipq_pwm_chip *pwm; + struct device *dev; + int ret; + + dev = &pdev->dev; + pwm = devm_kzalloc(dev, sizeof(*pwm), GFP_KERNEL); + if (!pwm) + return -ENOMEM; + + platform_set_drvdata(pdev, pwm); + + pwm->mem = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(pwm->mem)) + return PTR_ERR(pwm->mem); + + pwm->clk = devm_clk_get(dev, "core"); + if (IS_ERR(pwm->clk)) + return PTR_ERR(pwm->clk); + + ret = clk_set_rate(pwm->clk, CLK_SRC_FREQ); + if (ret) + return ret; + ret = clk_prepare_enable(pwm->clk); + if (ret) + return ret; + + pwm->chip.dev = dev; + pwm->chip.ops = &ipq_pwm_ops; + pwm->chip.npwm = MAX_PWM_DEVICES; + + ret = pwmchip_add(&pwm->chip); + if (ret < 0) { + dev_err_probe(dev, ret, "pwmchip_add() failed\n"); + clk_disable_unprepare(pwm->clk); + return ret; + } + + return 0; +} + +static int ipq_pwm_remove(struct platform_device *pdev) +{ + struct ipq_pwm_chip *pwm = platform_get_drvdata(pdev); + + pwmchip_remove(&pwm->chip); + + return 0; +} + +static const struct of_device_id pwm_ipq_dt_match[] = { + { .compatible = "qcom,ipq6018-pwm", }, + {} +}; +MODULE_DEVICE_TABLE(of, pwm_ipq_dt_match); + +static struct platform_driver ipq_pwm_driver = { + .driver = { + .name = "ipq-pwm", + .owner = THIS_MODULE, + .of_match_table = pwm_ipq_dt_match, + }, + .probe = ipq_pwm_probe, + .remove = ipq_pwm_remove, +}; + +module_platform_driver(ipq_pwm_driver); + +MODULE_LICENSE("Dual BSD/GPL"); From patchwork Sun Jun 27 05:24:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baruch Siach X-Patchwork-Id: 12346677 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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 9EB29C49EA6 for ; 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Sun, 27 Jun 2021 08:24:09 +0300 (IDT) From: Baruch Siach To: Thierry Reding , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , Lee Jones Cc: Baruch Siach , Andy Gross , Bjorn Andersson , Balaji Prakash J , Rob Herring , Robert Marko , linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 2/3] dt-bindings: pwm: add IPQ6018 binding Date: Sun, 27 Jun 2021 08:24:05 +0300 Message-Id: <24e738bc8911b9fc4354fac130e5e2869b0bd9c8.1624771446.git.baruch@tkos.co.il> X-Mailer: git-send-email 2.30.2 In-Reply-To: <305eacc9c57c2404795b6be76a08915808e23108.1624771446.git.baruch@tkos.co.il> References: <305eacc9c57c2404795b6be76a08915808e23108.1624771446.git.baruch@tkos.co.il> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210626_222420_622102_29133235 X-CRM114-Status: GOOD ( 13.64 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DT binding for the PWM block in Qualcomm IPQ6018 SoC. Signed-off-by: Baruch Siach --- v4: Update the binding example node as well (Rob Herring's bot) v3: s/qcom,pwm-ipq6018/qcom,ipq6018-pwm/ (Rob Herring) v2: Make #pwm-cells const (Rob Herring) --- .../devicetree/bindings/pwm/ipq-pwm.yaml | 52 +++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/ipq-pwm.yaml diff --git a/Documentation/devicetree/bindings/pwm/ipq-pwm.yaml b/Documentation/devicetree/bindings/pwm/ipq-pwm.yaml new file mode 100644 index 000000000000..e02fd577cca5 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/ipq-pwm.yaml @@ -0,0 +1,52 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pwm/ipq-pwm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm IPQ6018 PWM controller + +maintainers: + - Baruch Siach + +properties: + "#pwm-cells": + const: 2 + + compatible: + const: qcom,ipq6018-pwm + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + const: core + +required: + - "#pwm-cells" + - compatible + - reg + - clocks + - clock-names + +additionalProperties: false + +examples: + - | + #include + + soc { + #address-cells = <2>; + #size-cells = <2>; + + pwm@1941010 { + #pwm-cells = <2>; + compatible = "qcom,ipq6018-pwm"; + reg = <0x0 0x1941010 0x0 0x20>; + clocks = <&gcc GCC_ADSS_PWM_CLK>; + clock-names = "core"; + }; + }; From patchwork Sun Jun 27 05:24:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baruch Siach X-Patchwork-Id: 12346675 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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 9C808C49EAB for ; Sun, 27 Jun 2021 05:26:27 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 648D061C34 for ; 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Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lxNHM-00594O-Mf; Sun, 27 Jun 2021 05:24:24 +0000 Received: from guitar.tcltek.co.il ([192.115.133.116] helo=mx.tkos.co.il) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lxNHH-005930-Uq for linux-arm-kernel@lists.infradead.org; Sun, 27 Jun 2021 05:24:21 +0000 Received: from tarshish.tkos.co.il (unknown [10.0.8.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx.tkos.co.il (Postfix) with ESMTPS id 9D88D440677; Sun, 27 Jun 2021 08:24:10 +0300 (IDT) From: Baruch Siach To: Thierry Reding , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , Lee Jones Cc: Baruch Siach , Andy Gross , Bjorn Andersson , Balaji Prakash J , Rob Herring , Robert Marko , linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 3/3] arm64: dts: ipq6018: add pwm node Date: Sun, 27 Jun 2021 08:24:06 +0300 Message-Id: <6babae66a20fca62e10b6abdd642773d2590b70e.1624771446.git.baruch@tkos.co.il> X-Mailer: git-send-email 2.30.2 In-Reply-To: <305eacc9c57c2404795b6be76a08915808e23108.1624771446.git.baruch@tkos.co.il> References: <305eacc9c57c2404795b6be76a08915808e23108.1624771446.git.baruch@tkos.co.il> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210626_222420_270887_7785F862 X-CRM114-Status: GOOD ( 12.03 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Describe the PWM block on IPQ6018. Signed-off-by: Baruch Siach --- Rob has not responded to Bjorn's questions[1] regarding registers area description and the TCSR block. Leaving it the same as in v2 for now. [1] https://lore.kernel.org/linux-arm-msm/YLgO0Aj1d4w9EcPv@yoga/ v3: s/qcom,pwm-ipq6018/qcom,ipq6018-pwm/ (Rob Herring) --- arch/arm64/boot/dts/qcom/ipq6018.dtsi | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/ipq6018.dtsi b/arch/arm64/boot/dts/qcom/ipq6018.dtsi index 6ee7b99c21ec..bbc1ed960bb4 100644 --- a/arch/arm64/boot/dts/qcom/ipq6018.dtsi +++ b/arch/arm64/boot/dts/qcom/ipq6018.dtsi @@ -355,6 +355,15 @@ i2c_1: i2c@78b7000 { /* BLSP1 QUP2 */ status = "disabled"; }; + pwm: pwm@1941010 { + #pwm-cells = <2>; + compatible = "qcom,ipq6018-pwm"; + reg = <0x0 0x1941010 0x0 0x20>; + clocks = <&gcc GCC_ADSS_PWM_CLK>; + clock-names = "core"; + status = "disabled"; + }; + qpic_bam: dma-controller@7984000 { compatible = "qcom,bam-v1.7.0"; reg = <0x0 0x07984000 0x0 0x1a000>;