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Wed, 13 Mar 2019 07:31:09 +0000 From: Anson Huang To: "thierry.reding@gmail.com" , "robh+dt@kernel.org" , "mark.rutland@arm.com" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "linux@armlinux.org.uk" , "stefan@agner.ch" , "otavio@ossystems.com.br" , Leonard Crestez , "schnitzeltony@gmail.com" , "jan.tuerk@emtrion.com" , Robin Gong , "linux-pwm@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "u.kleine-koenig@pengutronix.de" Subject: [PATCH V2 1/5] dt-bindings: pwm: Add i.MX TPM PWM binding Thread-Topic: [PATCH V2 1/5] dt-bindings: pwm: Add i.MX TPM PWM binding Thread-Index: AQHU2W66swSo6p9+PE210IiJ5APc7Q== Date: Wed, 13 Mar 2019 07:31:09 +0000 Message-ID: <1552461970-20813-2-git-send-email-Anson.Huang@nxp.com> References: <1552461970-20813-1-git-send-email-Anson.Huang@nxp.com> In-Reply-To: <1552461970-20813-1-git-send-email-Anson.Huang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK2PR04CA0076.apcprd04.prod.outlook.com (2603:1096:202:15::20) To AM6PR0402MB3911.eurprd04.prod.outlook.com (2603:10a6:209:1c::10) authentication-results: spf=none (sender IP is ) smtp.mailfrom=anson.huang@nxp.com; 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Signed-off-by: Anson Huang --- Changes since V1: - remove optional property which is no need now. --- Documentation/devicetree/bindings/pwm/imx-tpm-pwm.txt | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/imx-tpm-pwm.txt diff --git a/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.txt b/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.txt new file mode 100644 index 0000000..d47b8fb --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.txt @@ -0,0 +1,19 @@ +Freescale i.MX TPM PWM controller + +Required properties: +- compatible : Should be "fsl,imx-tpm-pwm". +- reg: Physical base address and length of the controller's registers. +- #pwm-cells: Should be 2. See pwm.txt in this directory for a description of the cells format. +- clocks : The clock provided by the SoC to drive the PWM. +- interrupts: The interrupt for the pwm controller. + +Example: + +pwm0: tpm@40250000 { + compatible = "fsl,imx-tpm-pwm"; + reg = <0x40250000 0x1000>; + assigned-clocks = <&clks IMX7ULP_CLK_LPTPM4>; + assigned-clock-parents = <&clks IMX7ULP_CLK_SOSC_BUS_CLK>; + clocks = <&clks IMX7ULP_CLK_LPTPM4>; + #pwm-cells = <2>; +}; From patchwork Wed Mar 13 07:31:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 10850905 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E18C617DF for ; Wed, 13 Mar 2019 10:24:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C8350288AF for ; 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bh=bR6xw+MLJghBXGutbu/fWw32WDHGh+LADA/OAiT4CsA=; b=YZgix7y/TrUCIzJnB0QxcHMbpH9w2bBT1bJy1NtGMst2Aeoov1cF98xBib0zPDZe+ypH2oOA4YRlDaEWJLZ8kVKy5tbU3Gm+sXUeZSG1CobGt3XRc4XsRwFFRtyEIfjWR92iSudKk2B//ZRKagKhtjQWJcVALJhlDC0x+Np9nLQ= Received: from AM6PR0402MB3911.eurprd04.prod.outlook.com (52.133.30.10) by AM6PR0402MB3813.eurprd04.prod.outlook.com (52.133.29.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1709.13; Wed, 13 Mar 2019 07:31:16 +0000 Received: from AM6PR0402MB3911.eurprd04.prod.outlook.com ([fe80::e052:f2d5:93f2:5f52]) by AM6PR0402MB3911.eurprd04.prod.outlook.com ([fe80::e052:f2d5:93f2:5f52%4]) with mapi id 15.20.1686.021; Wed, 13 Mar 2019 07:31:16 +0000 From: Anson Huang To: "thierry.reding@gmail.com" , "robh+dt@kernel.org" , "mark.rutland@arm.com" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "linux@armlinux.org.uk" , "stefan@agner.ch" , "otavio@ossystems.com.br" , Leonard Crestez , "schnitzeltony@gmail.com" , "jan.tuerk@emtrion.com" , Robin Gong , "linux-pwm@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "u.kleine-koenig@pengutronix.de" Subject: [PATCH V2 2/5] pwm: Add i.MX TPM PWM driver support Thread-Topic: [PATCH V2 2/5] pwm: Add i.MX TPM PWM driver support Thread-Index: AQHU2W6+mizqa10BqkKrjLjL0sRSWQ== Date: Wed, 13 Mar 2019 07:31:16 +0000 Message-ID: <1552461970-20813-3-git-send-email-Anson.Huang@nxp.com> References: <1552461970-20813-1-git-send-email-Anson.Huang@nxp.com> In-Reply-To: <1552461970-20813-1-git-send-email-Anson.Huang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK2PR04CA0076.apcprd04.prod.outlook.com (2603:1096:202:15::20) To AM6PR0402MB3911.eurprd04.prod.outlook.com (2603:10a6:209:1c::10) x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 1ea647d4-b8e5-43f5-d976-08d6a785e064 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; 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Signed-off-by: Anson Huang --- Changes since V1: - improve coding style, function name's prefix; - improve Kconfig's help info; - use .apply instead for .enable/.disable/.config etc. to simply the code; - improve clock operation, make clock enabled during probe phase and ONLY disabled when suspend, as register read/write need to sync with clock, keeping it enabled makes the register read/write simple; - improve prescale calculation; - add error message print during probe for ioremap and clk get; --- drivers/pwm/Kconfig | 10 ++ drivers/pwm/Makefile | 1 + drivers/pwm/pwm-imx-tpm.c | 332 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 343 insertions(+) create mode 100644 drivers/pwm/pwm-imx-tpm.c diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index a8f47df..c1cbb43 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -201,6 +201,16 @@ config PWM_IMX To compile this driver as a module, choose M here: the module will be called pwm-imx. +config PWM_IMX_TPM + tristate "i.MX TPM PWM support" + depends on ARCH_MXC + help + Generic PWM framework driver for i.MX7ULP TPM module, TPM's full + name is Low Power Timer/Pulse Width Modulation Module. + + To compile this driver as a module, choose M here: the module + will be called pwm-imx-tpm. + config PWM_JZ4740 tristate "Ingenic JZ47xx PWM support" depends on MACH_INGENIC diff --git a/drivers/pwm/Makefile b/drivers/pwm/Makefile index 9c676a0..64e036c 100644 --- a/drivers/pwm/Makefile +++ b/drivers/pwm/Makefile @@ -18,6 +18,7 @@ obj-$(CONFIG_PWM_FSL_FTM) += pwm-fsl-ftm.o obj-$(CONFIG_PWM_HIBVT) += pwm-hibvt.o obj-$(CONFIG_PWM_IMG) += pwm-img.o obj-$(CONFIG_PWM_IMX) += pwm-imx.o +obj-$(CONFIG_PWM_IMX_TPM) += pwm-imx-tpm.o obj-$(CONFIG_PWM_JZ4740) += pwm-jz4740.o obj-$(CONFIG_PWM_LP3943) += pwm-lp3943.o obj-$(CONFIG_PWM_LPC18XX_SCT) += pwm-lpc18xx-sct.o diff --git a/drivers/pwm/pwm-imx-tpm.c b/drivers/pwm/pwm-imx-tpm.c new file mode 100644 index 0000000..8c1a1ba --- /dev/null +++ b/drivers/pwm/pwm-imx-tpm.c @@ -0,0 +1,332 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2018-2019 NXP. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define TPM_GLOBAL 0x8 +#define TPM_SC 0x10 +#define TPM_CNT 0x14 +#define TPM_MOD 0x18 +#define TPM_C0SC 0x20 +#define TPM_C0V 0x24 + +#define TPM_SC_CMOD_SHIFT 3 +#define TPM_SC_CMOD_MASK (0x3 << TPM_SC_CMOD_SHIFT) +#define TPM_SC_CPWMS BIT(5) + +#define TPM_CnSC_CHF BIT(7) +#define TPM_CnSC_MSnB BIT(5) +#define TPM_CnSC_MSnA BIT(4) +#define TPM_CnSC_ELSnB BIT(3) +#define TPM_CnSC_ELSnA BIT(2) + +#define TPM_SC_PS_MASK 0x7 +#define TPM_MOD_MOD_MASK 0xffff + +#define TPM_COUNT_MAX 0xffff + +#define TPM_CHn_ADDR_OFFSET 0x8 +#define TPM_DEFAULT_PWM_CHANNEL_NUM 2 + +struct imx_tpm_pwm_chip { + struct pwm_chip chip; + struct clk *clk; + void __iomem *base; + spinlock_t lock; + u32 chn_config[TPM_DEFAULT_PWM_CHANNEL_NUM]; + bool chn_status[TPM_DEFAULT_PWM_CHANNEL_NUM]; +}; + +#define to_imx_tpm_pwm_chip(_chip) container_of(_chip, struct imx_tpm_pwm_chip, chip) + +static void imx_tpm_pwm_config_counter(struct pwm_chip *chip, u32 period) +{ + struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip); + unsigned int period_cnt; + u32 val, div; + u64 tmp; + + tmp = clk_get_rate(tpm->clk); + tmp *= period; + val = DIV_ROUND_CLOSEST_ULL(tmp, NSEC_PER_SEC); + if (val < TPM_COUNT_MAX) + div = 0; + else + div = ilog2(roundup_pow_of_two(val / TPM_COUNT_MAX)); + if (div > TPM_SC_PS_MASK) { + dev_err(chip->dev, + "failed to find valid prescale value!\n"); + return; + } + /* set TPM counter prescale */ + val = readl(tpm->base + TPM_SC); + val &= ~TPM_SC_PS_MASK; + val |= div; + writel(val, tpm->base + TPM_SC); + + /* set period counter */ + do_div(tmp, NSEC_PER_SEC); + period_cnt = DIV_ROUND_CLOSEST_ULL(tmp, 1 << div); + writel(period_cnt & TPM_MOD_MOD_MASK, tpm->base + TPM_MOD); +} + +static void imx_tpm_pwm_config(struct pwm_chip *chip, + struct pwm_device *pwm, + struct pwm_state *state) +{ + struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip); + static bool tpm_cnt_initialized; + unsigned int duty_cnt; + u32 val; + u64 tmp; + + /* + * TPM counter is shared by multi channels, let's make it to be + * ONLY first channel can config TPM counter's precale and period + * count. + */ + if (!tpm_cnt_initialized) { + imx_tpm_pwm_config_counter(chip, state->period); + tpm_cnt_initialized = true; + } + + /* set duty counter */ + tmp = readl(tpm->base + TPM_MOD) & TPM_MOD_MOD_MASK; + tmp *= state->duty_cycle; + duty_cnt = DIV_ROUND_CLOSEST_ULL(tmp, state->period); + writel(duty_cnt & TPM_MOD_MOD_MASK, tpm->base + + TPM_C0V + pwm->hwpwm * TPM_CHn_ADDR_OFFSET); + + /* set polarity */ + val = readl(tpm->base + TPM_C0SC + pwm->hwpwm * TPM_CHn_ADDR_OFFSET); + val &= ~(TPM_CnSC_ELSnB | TPM_CnSC_ELSnA | TPM_CnSC_MSnA); + val |= TPM_CnSC_MSnB; + val |= state->polarity ? TPM_CnSC_ELSnA : TPM_CnSC_ELSnB; + /* + * polarity settings will enabled/disable output statue + * immediately, so here ONLY save the config and will be + * written into register when channel is enabled/disabled. + */ + tpm->chn_config[pwm->hwpwm] = val; +} + +static void imx_tpm_pwm_enable(struct pwm_chip *chip, + struct pwm_device *pwm, + bool enable) +{ + struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip); + u32 val, i; + + val = readl(tpm->base + TPM_SC); + if (enable) { + /* restore channel config */ + writel(tpm->chn_config[pwm->hwpwm], + tpm->base + + TPM_C0SC + pwm->hwpwm * TPM_CHn_ADDR_OFFSET); + + /* start TPM counter anyway */ + val |= 0x1 << TPM_SC_CMOD_SHIFT; + writel(val, tpm->base + TPM_SC); + } else { + /* save channel config */ + tpm->chn_config[pwm->hwpwm] = readl(tpm->base + + TPM_C0SC + pwm->hwpwm * TPM_CHn_ADDR_OFFSET); + /* disable channel */ + writel(TPM_CnSC_CHF, tpm->base + + TPM_C0SC + pwm->hwpwm * TPM_CHn_ADDR_OFFSET); + + for (i = 0; i < chip->npwm; i++) + if (i != pwm->hwpwm && tpm->chn_status[i]) + break; + if (i == chip->npwm) { + /* stop TPM counter since all channels are disabled */ + val &= ~TPM_SC_CMOD_MASK; + writel(val, tpm->base + TPM_SC); + } + } + + /* update channel statue */ + tpm->chn_status[pwm->hwpwm] = enable; +} + +static void imx_tpm_pwm_get_state(struct pwm_chip *chip, + struct pwm_device *pwm, + struct pwm_state *state) +{ + struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip); + unsigned long rate, flags; + u64 tmp; + u32 val; + + spin_lock_irqsave(&tpm->lock, flags); + + /* get period */ + rate = clk_get_rate(tpm->clk); + tmp = readl(tpm->base + TPM_MOD); + val = readl(tpm->base + TPM_SC); + val &= TPM_SC_PS_MASK; + tmp *= (1 << val) * NSEC_PER_SEC; + state->period = DIV_ROUND_CLOSEST_ULL(tmp, rate); + + /* get duty cycle */ + tmp = readl(tpm->base + TPM_C0V + pwm->hwpwm * TPM_CHn_ADDR_OFFSET); + tmp *= (1 << val) * NSEC_PER_SEC; + state->duty_cycle = DIV_ROUND_CLOSEST_ULL(tmp, rate); + + /* get polarity */ + val = readl(tpm->base + TPM_C0SC + pwm->hwpwm * TPM_CHn_ADDR_OFFSET); + if (val & TPM_CnSC_ELSnA) + state->polarity = PWM_POLARITY_INVERSED; + else + state->polarity = PWM_POLARITY_NORMAL; + + /* get channel status */ + state->enabled = tpm->chn_status[pwm->hwpwm] ? true : false; + + spin_unlock_irqrestore(&tpm->lock, flags); +} + +static int imx_tpm_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, + struct pwm_state *state) +{ + struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip); + struct pwm_state curstate; + unsigned long flags; + + imx_tpm_pwm_get_state(chip, pwm, &curstate); + + spin_lock_irqsave(&tpm->lock, flags); + + if (state->period != curstate.period || + state->duty_cycle != curstate.duty_cycle || + state->polarity != curstate.polarity) + imx_tpm_pwm_config(chip, pwm, state); + + if (state->enabled != curstate.enabled) + imx_tpm_pwm_enable(chip, pwm, state->enabled); + + spin_unlock_irqrestore(&tpm->lock, flags); + + return 0; +} + +static const struct pwm_ops imx_tpm_pwm_ops = { + .get_state = imx_tpm_pwm_get_state, + .apply = imx_tpm_pwm_apply, + .owner = THIS_MODULE, +}; + +static int imx_tpm_pwm_probe(struct platform_device *pdev) +{ + struct imx_tpm_pwm_chip *tpm; + struct resource *res; + int ret; + + tpm = devm_kzalloc(&pdev->dev, sizeof(*tpm), GFP_KERNEL); + if (!tpm) + return -ENOMEM; + + platform_set_drvdata(pdev, tpm); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + tpm->base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(tpm->base)) { + ret = PTR_ERR(tpm->base); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, "pwm ioremap failed %d\n", ret); + return ret; + } + + tpm->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(tpm->clk)) { + ret = PTR_ERR(tpm->clk); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, "failed to get pwm clk %d\n", ret); + return ret; + } + + ret = clk_prepare_enable(tpm->clk); + if (ret) { + dev_err(&pdev->dev, + "failed to prepare or enable clk %d\n", ret); + return ret; + } + + tpm->chip.dev = &pdev->dev; + tpm->chip.ops = &imx_tpm_pwm_ops; + tpm->chip.base = -1; + tpm->chip.npwm = TPM_DEFAULT_PWM_CHANNEL_NUM; + + spin_lock_init(&tpm->lock); + + ret = pwmchip_add(&tpm->chip); + if (ret) + dev_err(&pdev->dev, "failed to add pwm chip %d\n", ret); + + return ret; +} + +static int imx_tpm_pwm_remove(struct platform_device *pdev) +{ + struct imx_tpm_pwm_chip *tpm = platform_get_drvdata(pdev); + + return pwmchip_remove(&tpm->chip); +} + +static int __maybe_unused imx_tpm_pwm_suspend(struct device *dev) +{ + struct imx_tpm_pwm_chip *tpm = dev_get_drvdata(dev); + + clk_disable_unprepare(tpm->clk); + + return 0; +} + +static int __maybe_unused imx_tpm_pwm_resume(struct device *dev) +{ + struct imx_tpm_pwm_chip *tpm = dev_get_drvdata(dev); + int ret = clk_prepare_enable(tpm->clk); + + if (ret) + dev_err(dev, + "failed to prepare or enable clk %d\n", ret); + + return ret; +}; + +static SIMPLE_DEV_PM_OPS(imx_tpm_pwm_pm, + imx_tpm_pwm_suspend, imx_tpm_pwm_resume); + +static const struct of_device_id imx_tpm_pwm_dt_ids[] = { + { .compatible = "fsl,imx-tpm-pwm", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx_tpm_pwm_dt_ids); + +static struct platform_driver imx_tpm_pwm_driver = { + .driver = { + .name = "imx-tpm-pwm", + .of_match_table = imx_tpm_pwm_dt_ids, + .pm = &imx_tpm_pwm_pm, + }, + .probe = imx_tpm_pwm_probe, + .remove = imx_tpm_pwm_remove, +}; +module_platform_driver(imx_tpm_pwm_driver); + +MODULE_AUTHOR("Anson Huang "); +MODULE_DESCRIPTION("i.MX TPM PWM Driver"); +MODULE_LICENSE("GPL v2"); From patchwork Wed Mar 13 07:31:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 10850901 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7C8311575 for ; Wed, 13 Mar 2019 10:22:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 62E1B296EA for ; Wed, 13 Mar 2019 10:22:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 53A0829985; 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bh=12B47s41r6WVMjNwY2Bys+/e8IDF2fW1ux+7yBvMVWs=; b=HJXyfAGqOmjhOevdv4Rj28NZDCDs0Xied2Nlc4rp44iXaZNoZ7ADxNk9XGKTpDsiiD6peGVITvMqk5RFe47A/J6QqvRR67hdRmuMPnM1Cj+TMIC78VYII5Emzf/oBU+EElgHadiM3pzZG7ErwBDhgjkxEI5yz+V1u9+6clnKU58= Received: from AM6PR0402MB3911.eurprd04.prod.outlook.com (52.133.30.10) by AM6PR0402MB3813.eurprd04.prod.outlook.com (52.133.29.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1709.13; Wed, 13 Mar 2019 07:31:23 +0000 Received: from AM6PR0402MB3911.eurprd04.prod.outlook.com ([fe80::e052:f2d5:93f2:5f52]) by AM6PR0402MB3911.eurprd04.prod.outlook.com ([fe80::e052:f2d5:93f2:5f52%4]) with mapi id 15.20.1686.021; Wed, 13 Mar 2019 07:31:23 +0000 From: Anson Huang To: "thierry.reding@gmail.com" , "robh+dt@kernel.org" , "mark.rutland@arm.com" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "linux@armlinux.org.uk" , "stefan@agner.ch" , "otavio@ossystems.com.br" , Leonard Crestez , "schnitzeltony@gmail.com" , "jan.tuerk@emtrion.com" , Robin Gong , "linux-pwm@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "u.kleine-koenig@pengutronix.de" Subject: [PATCH V2 3/5] ARM: imx_v6_v7_defconfig: Add TPM PWM support by default Thread-Topic: [PATCH V2 3/5] ARM: imx_v6_v7_defconfig: Add TPM PWM support by default Thread-Index: AQHU2W7CBaHBtYWVS0C7rGVYa0l4WQ== Date: Wed, 13 Mar 2019 07:31:23 +0000 Message-ID: <1552461970-20813-4-git-send-email-Anson.Huang@nxp.com> References: <1552461970-20813-1-git-send-email-Anson.Huang@nxp.com> In-Reply-To: <1552461970-20813-1-git-send-email-Anson.Huang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK2PR04CA0076.apcprd04.prod.outlook.com (2603:1096:202:15::20) To AM6PR0402MB3911.eurprd04.prod.outlook.com (2603:10a6:209:1c::10) x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: e93a5843-645e-4ed5-9ea8-08d6a785e489 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; 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Signed-off-by: Anson Huang --- No changes. --- arch/arm/configs/imx_v6_v7_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig index 5586a50..57862c6 100644 --- a/arch/arm/configs/imx_v6_v7_defconfig +++ b/arch/arm/configs/imx_v6_v7_defconfig @@ -399,6 +399,7 @@ CONFIG_MPL3115=y CONFIG_PWM=y CONFIG_PWM_FSL_FTM=y CONFIG_PWM_IMX=y +CONFIG_PWM_IMX_TPM=y CONFIG_NVMEM_IMX_OCOTP=y CONFIG_NVMEM_VF610_OCOTP=y CONFIG_TEE=y From patchwork Wed Mar 13 07:31:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 10850993 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D076A1390 for ; Wed, 13 Mar 2019 11:31:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B674D29B6A for ; 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Wed, 13 Mar 2019 07:31:30 +0000 Received: from AM6PR0402MB3911.eurprd04.prod.outlook.com ([fe80::e052:f2d5:93f2:5f52]) by AM6PR0402MB3911.eurprd04.prod.outlook.com ([fe80::e052:f2d5:93f2:5f52%4]) with mapi id 15.20.1686.021; Wed, 13 Mar 2019 07:31:30 +0000 From: Anson Huang To: "thierry.reding@gmail.com" , "robh+dt@kernel.org" , "mark.rutland@arm.com" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "linux@armlinux.org.uk" , "stefan@agner.ch" , "otavio@ossystems.com.br" , Leonard Crestez , "schnitzeltony@gmail.com" , "jan.tuerk@emtrion.com" , Robin Gong , "linux-pwm@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "u.kleine-koenig@pengutronix.de" Subject: [PATCH V2 4/5] ARM: dts: imx7ulp: Add pwm0 support Thread-Topic: [PATCH V2 4/5] ARM: dts: imx7ulp: Add pwm0 support Thread-Index: AQHU2W7GjEV5zdP52UykHGJMAxLGiA== Date: Wed, 13 Mar 2019 07:31:30 +0000 Message-ID: <1552461970-20813-5-git-send-email-Anson.Huang@nxp.com> References: <1552461970-20813-1-git-send-email-Anson.Huang@nxp.com> In-Reply-To: <1552461970-20813-1-git-send-email-Anson.Huang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK2PR04CA0076.apcprd04.prod.outlook.com (2603:1096:202:15::20) To AM6PR0402MB3911.eurprd04.prod.outlook.com (2603:10a6:209:1c::10) authentication-results: spf=none (sender IP is ) smtp.mailfrom=anson.huang@nxp.com; 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Signed-off-by: Anson Huang --- Changes since V1: - update the pad config to pull down to make sure when TPM counter is disabled, PWM output will be Low. --- arch/arm/boot/dts/imx7ulp-evk.dts | 12 ++++++++++++ arch/arm/boot/dts/imx7ulp.dtsi | 10 ++++++++++ 2 files changed, 22 insertions(+) diff --git a/arch/arm/boot/dts/imx7ulp-evk.dts b/arch/arm/boot/dts/imx7ulp-evk.dts index a09026a..3f5ea18 100644 --- a/arch/arm/boot/dts/imx7ulp-evk.dts +++ b/arch/arm/boot/dts/imx7ulp-evk.dts @@ -40,6 +40,12 @@ status = "okay"; }; +&pwm0 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pwm0>; + status = "okay"; +}; + &usdhc0 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_usdhc0>; @@ -57,6 +63,12 @@ bias-pull-up; }; + pinctrl_pwm0: pwm0grp { + fsl,pins = < + IMX7ULP_PAD_PTF2__TPM4_CH1 0x2 + >; + }; + pinctrl_usdhc0: usdhc0grp { fsl,pins = < IMX7ULP_PAD_PTD1__SDHC0_CMD 0x43 diff --git a/arch/arm/boot/dts/imx7ulp.dtsi b/arch/arm/boot/dts/imx7ulp.dtsi index fca6e50..6361c4e 100644 --- a/arch/arm/boot/dts/imx7ulp.dtsi +++ b/arch/arm/boot/dts/imx7ulp.dtsi @@ -124,6 +124,16 @@ status = "disabled"; }; + pwm0: pwm@40250000 { + compatible = "fsl,imx-tpm-pwm"; + reg = <0x40250000 0x1000>; + assigned-clocks = <&pcc2 IMX7ULP_CLK_LPTPM4>; + assigned-clock-parents = <&scg1 IMX7ULP_CLK_SOSC_BUS_CLK>; + clocks = <&pcc2 IMX7ULP_CLK_LPTPM4>; + #pwm-cells = <2>; + status = "disabled"; + }; + tpm5: tpm@40260000 { compatible = "fsl,imx7ulp-tpm"; reg = <0x40260000 0x1000>; From patchwork Wed Mar 13 07:31:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 10850951 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 662E76C2 for ; Wed, 13 Mar 2019 10:53:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4EEFB29AD6 for ; Wed, 13 Mar 2019 10:53:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4278A29AD9; 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bh=4F16qKkq27PUkv2mytfwDOBCR6Hst18PTjrgxPcdplU=; b=sL1OT3yf+Jhq33VvFCrfZ6qufkf6o5QZgMtq5+eIMPnhppt1T10dzQryYiwoOQuNRIRY3oGT4VVQtgZi+CbDG5TePm6d5qBIJhtAhBYSmKqyXRtcQKAgzN4kZQFlg/JSYUnJSCdvwzO7bFFIzOYnVeC9GjS5ddNLPHUntPvfXZE= Received: from AM6PR0402MB3911.eurprd04.prod.outlook.com (52.133.30.10) by AM6PR0402MB3925.eurprd04.prod.outlook.com (52.133.30.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1686.18; Wed, 13 Mar 2019 07:31:37 +0000 Received: from AM6PR0402MB3911.eurprd04.prod.outlook.com ([fe80::e052:f2d5:93f2:5f52]) by AM6PR0402MB3911.eurprd04.prod.outlook.com ([fe80::e052:f2d5:93f2:5f52%4]) with mapi id 15.20.1686.021; Wed, 13 Mar 2019 07:31:37 +0000 From: Anson Huang To: "thierry.reding@gmail.com" , "robh+dt@kernel.org" , "mark.rutland@arm.com" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "linux@armlinux.org.uk" , "stefan@agner.ch" , "otavio@ossystems.com.br" , Leonard Crestez , "schnitzeltony@gmail.com" , "jan.tuerk@emtrion.com" , Robin Gong , "linux-pwm@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "u.kleine-koenig@pengutronix.de" Subject: [PATCH V2 5/5] ARM: dts: imx7ulp-evk: Add backlight support Thread-Topic: [PATCH V2 5/5] ARM: dts: imx7ulp-evk: Add backlight support Thread-Index: AQHU2W7KsW8qPScOBE6LRVbeC2PIpQ== Date: Wed, 13 Mar 2019 07:31:36 +0000 Message-ID: <1552461970-20813-6-git-send-email-Anson.Huang@nxp.com> References: <1552461970-20813-1-git-send-email-Anson.Huang@nxp.com> In-Reply-To: <1552461970-20813-1-git-send-email-Anson.Huang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK2PR04CA0076.apcprd04.prod.outlook.com (2603:1096:202:15::20) To AM6PR0402MB3911.eurprd04.prod.outlook.com (2603:10a6:209:1c::10) authentication-results: spf=none (sender IP is ) smtp.mailfrom=anson.huang@nxp.com; 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AM6PR0402MB3925; 23:LyKXcgxQUwpRDg7lEFQeZp4JGxdIFeYHwgWYGo+FDRlPtnZUn3mOa3q8D5MVq8thDipvygZ40Fu9vrzvKVriasdQRIx819A1n2811YmhC797tm3jsipFdmnvnltAMaq32ZSRCDOj3rI6cBB1fKNKHA== X-OriginatorOrg: nxp.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190313_035332_499644_6626A015 X-CRM114-Status: GOOD ( 10.87 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dl-linux-imx Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds i.MX7ULP EVK board MIPI-DSI backlight support. Signed-off-by: Anson Huang --- No changes. --- arch/arm/boot/dts/imx7ulp-evk.dts | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/imx7ulp-evk.dts b/arch/arm/boot/dts/imx7ulp-evk.dts index 3f5ea18..f90f2f3 100644 --- a/arch/arm/boot/dts/imx7ulp-evk.dts +++ b/arch/arm/boot/dts/imx7ulp-evk.dts @@ -22,6 +22,14 @@ reg = <0x60000000 0x40000000>; }; + backlight { + compatible = "pwm-backlight"; + pwms = <&pwm0 1 50000>; + brightness-levels = <0 20 25 30 35 40 100>; + default-brightness-level = <6>; + status = "okay"; + }; + reg_vsd_3v3: regulator-vsd-3v3 { compatible = "regulator-fixed"; regulator-name = "VSD_3V3";