From patchwork Tue Jul 18 15:26:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrizio Castro X-Patchwork-Id: 13317409 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 aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B55FEB64DA for ; Tue, 18 Jul 2023 15:26:30 +0000 (UTC) Received: from relmlie6.idc.renesas.com (relmlie6.idc.renesas.com [210.160.252.172]) by mx.groups.io with SMTP id smtpd.web10.10729.1689693987594879117 for ; Tue, 18 Jul 2023 08:26:28 -0700 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: renesas.com, ip: 210.160.252.172, mailfrom: fabrizio.castro.jz@renesas.com) X-IronPort-AV: E=Sophos;i="6.01,214,1684767600"; d="scan'208";a="173423015" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 19 Jul 2023 00:26:28 +0900 Received: from mulinux.home (unknown [10.226.93.62]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 4677A4007143; Wed, 19 Jul 2023 00:26:26 +0900 (JST) From: Fabrizio Castro To: cip-dev@lists.cip-project.org, Nobuhiro Iwamatsu , Pavel Machek Cc: Biju Das , Lad Prabhakar , Chris Paterson , Fabrizio Castro Subject: [PATCH 6.1.y-cip 1/4] dt-bindings: soc: renesas: Add RZ/V2M PWC Date: Tue, 18 Jul 2023 16:26:19 +0100 Message-Id: <20230718152622.327364-2-fabrizio.castro.jz@renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230718152622.327364-1-fabrizio.castro.jz@renesas.com> References: <20230718152622.327364-1-fabrizio.castro.jz@renesas.com> MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 18 Jul 2023 15:26:30 -0000 X-Groupsio-URL: https://lists.cip-project.org/g/cip-dev/message/12399 Commit 6e1456f9251966d8fbfde2ae4750ba540b588533 upstream. The Renesas RZ/V2M External Power Sequence Controller (PWC) IP is capable of: * external power supply on/off sequence generation * on/off signal generation for the LPDDR4 core power supply (LPVDD) * key input signals processing * general-purpose output pins Add the corresponding dt-bindings. Signed-off-by: Fabrizio Castro Reviewed-by: Rob Herring Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20230106125816.10600-2-fabrizio.castro.jz@renesas.com Signed-off-by: Geert Uytterhoeven Signed-off-by: Fabrizio Castro --- .../soc/renesas/renesas,rzv2m-pwc.yaml | 56 +++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/renesas/renesas,rzv2m-pwc.yaml diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas,rzv2m-pwc.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas,rzv2m-pwc.yaml new file mode 100644 index 000000000000..12df33f58484 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/renesas/renesas,rzv2m-pwc.yaml @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/soc/renesas/renesas,rzv2m-pwc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/V2M External Power Sequence Controller (PWC) + +description: |+ + The PWC IP found in the RZ/V2M family of chips comes with the below + capabilities + - external power supply on/off sequence generation + - on/off signal generation for the LPDDR4 core power supply (LPVDD) + - key input signals processing + - general-purpose output pins + +maintainers: + - Fabrizio Castro + +properties: + compatible: + items: + - enum: + - renesas,r9a09g011-pwc # RZ/V2M + - renesas,r9a09g055-pwc # RZ/V2MA + - const: renesas,rzv2m-pwc + + reg: + maxItems: 1 + + gpio-controller: true + + '#gpio-cells': + const: 2 + + renesas,rzv2m-pwc-power: + description: The PWC is used to control the system power supplies. + type: boolean + +required: + - compatible + - reg + - gpio-controller + - '#gpio-cells' + +additionalProperties: false + +examples: + - | + pwc: pwc@a3700000 { + compatible = "renesas,r9a09g011-pwc", "renesas,rzv2m-pwc"; + reg = <0xa3700000 0x800>; + gpio-controller; + #gpio-cells = <2>; + renesas,rzv2m-pwc-power; + }; From patchwork Tue Jul 18 15:26:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrizio Castro X-Patchwork-Id: 13317412 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 aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 56E70EB64DC for ; Tue, 18 Jul 2023 15:26:40 +0000 (UTC) Received: from relmlie6.idc.renesas.com (relmlie6.idc.renesas.com [210.160.252.172]) by mx.groups.io with SMTP id smtpd.web10.10729.1689693987594879117 for ; Tue, 18 Jul 2023 08:26:31 -0700 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: renesas.com, ip: 210.160.252.172, mailfrom: fabrizio.castro.jz@renesas.com) X-IronPort-AV: E=Sophos;i="6.01,214,1684767600"; d="scan'208";a="173423020" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 19 Jul 2023 00:26:31 +0900 Received: from mulinux.home (unknown [10.226.93.62]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 15C9F4007143; Wed, 19 Jul 2023 00:26:28 +0900 (JST) From: Fabrizio Castro To: cip-dev@lists.cip-project.org, Nobuhiro Iwamatsu , Pavel Machek Cc: Biju Das , Lad Prabhakar , Chris Paterson , Fabrizio Castro Subject: [PATCH 6.1.y-cip 2/4] soc: renesas: Add PWC support for RZ/V2M Date: Tue, 18 Jul 2023 16:26:20 +0100 Message-Id: <20230718152622.327364-3-fabrizio.castro.jz@renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230718152622.327364-1-fabrizio.castro.jz@renesas.com> References: <20230718152622.327364-1-fabrizio.castro.jz@renesas.com> MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 18 Jul 2023 15:26:40 -0000 X-Groupsio-URL: https://lists.cip-project.org/g/cip-dev/message/12400 Commit 0c56f949f626e59ef7c5b18e2706fed2a6afc4a2 upstream. The Renesas RZ/V2M External Power Sequence Controller (PWC) IP is capable of: * external power supply on/off sequence generation * on/off signal generation for the LPDDR4 core power supply (LPVDD) * key input signals processing * general-purpose output pins Add the corresponding device driver. Signed-off-by: Fabrizio Castro Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20230106125816.10600-3-fabrizio.castro.jz@renesas.com Signed-off-by: Geert Uytterhoeven Signed-off-by: Fabrizio Castro --- drivers/soc/renesas/Kconfig | 4 + drivers/soc/renesas/Makefile | 1 + drivers/soc/renesas/pwc-rzv2m.c | 141 ++++++++++++++++++++++++++++++++ 3 files changed, 146 insertions(+) create mode 100644 drivers/soc/renesas/pwc-rzv2m.c diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig index f95a1337450d..07465f85a236 100644 --- a/drivers/soc/renesas/Kconfig +++ b/drivers/soc/renesas/Kconfig @@ -328,6 +328,7 @@ config ARCH_R9A09G011 bool "ARM64 Platform support for RZ/V2M" select PM select PM_GENERIC_DOMAINS + select PWC_RZV2M help This enables support for the Renesas RZ/V2M SoC. @@ -343,6 +344,9 @@ config ARCH_R9A07G043 endif # RISCV +config PWC_RZV2M + bool "Renesas RZ/V2M PWC support" if COMPILE_TEST + config RST_RCAR bool "Reset Controller support for R-Car" if COMPILE_TEST diff --git a/drivers/soc/renesas/Makefile b/drivers/soc/renesas/Makefile index 535868c9c7e4..6e4e77b0afff 100644 --- a/drivers/soc/renesas/Makefile +++ b/drivers/soc/renesas/Makefile @@ -32,6 +32,7 @@ obj-$(CONFIG_ARCH_R9A06G032) += r9a06g032-smp.o endif # Family +obj-$(CONFIG_PWC_RZV2M) += pwc-rzv2m.o obj-$(CONFIG_RST_RCAR) += rcar-rst.o obj-$(CONFIG_SYSC_RCAR) += rcar-sysc.o obj-$(CONFIG_SYSC_RCAR_GEN4) += rcar-gen4-sysc.o diff --git a/drivers/soc/renesas/pwc-rzv2m.c b/drivers/soc/renesas/pwc-rzv2m.c new file mode 100644 index 000000000000..c83bdbdabb64 --- /dev/null +++ b/drivers/soc/renesas/pwc-rzv2m.c @@ -0,0 +1,141 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2023 Renesas Electronics Corporation + */ + +#include +#include +#include +#include + +#define PWC_PWCRST 0x00 +#define PWC_PWCCKEN 0x04 +#define PWC_PWCCTL 0x50 +#define PWC_GPIO 0x80 + +#define PWC_PWCRST_RSTSOFTAX 0x1 +#define PWC_PWCCKEN_ENGCKMAIN 0x1 +#define PWC_PWCCTL_PWOFF 0x1 + +struct rzv2m_pwc_priv { + void __iomem *base; + struct device *dev; + struct gpio_chip gp; + DECLARE_BITMAP(ch_en_bits, 2); +}; + +static void rzv2m_pwc_gpio_set(struct gpio_chip *chip, unsigned int offset, + int value) +{ + struct rzv2m_pwc_priv *priv = gpiochip_get_data(chip); + u32 reg; + + /* BIT 16 enables write to BIT 0, and BIT 17 enables write to BIT 1 */ + reg = BIT(offset + 16); + if (value) + reg |= BIT(offset); + + writel(reg, priv->base + PWC_GPIO); + + assign_bit(offset, priv->ch_en_bits, value); +} + +static int rzv2m_pwc_gpio_get(struct gpio_chip *chip, unsigned int offset) +{ + struct rzv2m_pwc_priv *priv = gpiochip_get_data(chip); + + return test_bit(offset, priv->ch_en_bits); +} + +static int rzv2m_pwc_gpio_direction_output(struct gpio_chip *gc, + unsigned int nr, int value) +{ + if (nr > 1) + return -EINVAL; + + rzv2m_pwc_gpio_set(gc, nr, value); + + return 0; +} + +static const struct gpio_chip rzv2m_pwc_gc = { + .label = "gpio_rzv2m_pwc", + .owner = THIS_MODULE, + .get = rzv2m_pwc_gpio_get, + .set = rzv2m_pwc_gpio_set, + .direction_output = rzv2m_pwc_gpio_direction_output, + .can_sleep = false, + .ngpio = 2, + .base = -1, +}; + +static int rzv2m_pwc_poweroff(struct sys_off_data *data) +{ + struct rzv2m_pwc_priv *priv = data->cb_data; + + writel(PWC_PWCRST_RSTSOFTAX, priv->base + PWC_PWCRST); + writel(PWC_PWCCKEN_ENGCKMAIN, priv->base + PWC_PWCCKEN); + writel(PWC_PWCCTL_PWOFF, priv->base + PWC_PWCCTL); + + mdelay(150); + + dev_err(priv->dev, "Failed to power off the system"); + + return NOTIFY_DONE; +} + +static int rzv2m_pwc_probe(struct platform_device *pdev) +{ + struct rzv2m_pwc_priv *priv; + int ret; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->base)) + return PTR_ERR(priv->base); + + /* + * The register used by this driver cannot be read, therefore set the + * outputs to their default values and initialize priv->ch_en_bits + * accordingly. BIT 16 enables write to BIT 0, BIT 17 enables write to + * BIT 1, and the default value of both BIT 0 and BIT 1 is 0. + */ + writel(BIT(17) | BIT(16), priv->base + PWC_GPIO); + bitmap_zero(priv->ch_en_bits, 2); + + priv->gp = rzv2m_pwc_gc; + priv->gp.parent = pdev->dev.parent; + priv->gp.fwnode = dev_fwnode(&pdev->dev); + + ret = devm_gpiochip_add_data(&pdev->dev, &priv->gp, priv); + if (ret) + return ret; + + if (device_property_read_bool(&pdev->dev, "renesas,rzv2m-pwc-power")) + ret = devm_register_power_off_handler(&pdev->dev, + rzv2m_pwc_poweroff, priv); + + return ret; +} + +static const struct of_device_id rzv2m_pwc_of_match[] = { + { .compatible = "renesas,rzv2m-pwc" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, rzv2m_pwc_of_match); + +static struct platform_driver rzv2m_pwc_driver = { + .probe = rzv2m_pwc_probe, + .driver = { + .name = "rzv2m_pwc", + .of_match_table = of_match_ptr(rzv2m_pwc_of_match), + }, +}; +module_platform_driver(rzv2m_pwc_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Fabrizio Castro "); +MODULE_DESCRIPTION("Renesas RZ/V2M PWC driver"); From patchwork Tue Jul 18 15:26:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrizio Castro X-Patchwork-Id: 13317410 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 aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B7D2EB64DA for ; Tue, 18 Jul 2023 15:26:40 +0000 (UTC) Received: from relmlie5.idc.renesas.com (relmlie5.idc.renesas.com [210.160.252.171]) by mx.groups.io with SMTP id smtpd.web11.10599.1689693994937474917 for ; Tue, 18 Jul 2023 08:26:35 -0700 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: renesas.com, ip: 210.160.252.171, mailfrom: fabrizio.castro.jz@renesas.com) X-IronPort-AV: E=Sophos;i="6.01,214,1684767600"; d="scan'208";a="169777540" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 19 Jul 2023 00:26:34 +0900 Received: from mulinux.home (unknown [10.226.93.62]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id E65584007145; Wed, 19 Jul 2023 00:26:31 +0900 (JST) From: Fabrizio Castro To: cip-dev@lists.cip-project.org, Nobuhiro Iwamatsu , Pavel Machek Cc: Biju Das , Lad Prabhakar , Chris Paterson , Fabrizio Castro Subject: [PATCH 6.1.y-cip 3/4] arm64: dts: renesas: r9a09g011: Add PWC support Date: Tue, 18 Jul 2023 16:26:21 +0100 Message-Id: <20230718152622.327364-4-fabrizio.castro.jz@renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230718152622.327364-1-fabrizio.castro.jz@renesas.com> References: <20230718152622.327364-1-fabrizio.castro.jz@renesas.com> MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 18 Jul 2023 15:26:40 -0000 X-Groupsio-URL: https://lists.cip-project.org/g/cip-dev/message/12401 Commit cf67b31904d42275e7b5eaf55c191db1925abb7a upstream. The RZ/V2M SoC contains an External Power Sequence Controller (PWC) module. This module provides an external power supply on/off sequence, on/off signal for the LPDDR4 core power supply, General Purpose Outputs, and key input signals. This patch adds PWC support to the SoC specific device tree. Signed-off-by: Fabrizio Castro Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20230118144747.24968-2-fabrizio.castro.jz@renesas.com Signed-off-by: Geert Uytterhoeven Signed-off-by: Fabrizio Castro --- arch/arm64/boot/dts/renesas/r9a09g011.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r9a09g011.dtsi b/arch/arm64/boot/dts/renesas/r9a09g011.dtsi index fe9bc7fe1701..d3af097f5fae 100644 --- a/arch/arm64/boot/dts/renesas/r9a09g011.dtsi +++ b/arch/arm64/boot/dts/renesas/r9a09g011.dtsi @@ -175,6 +175,14 @@ cpg: clock-controller@a3500000 { #power-domain-cells = <0>; }; + pwc: pwc@a3700000 { + compatible = "renesas,r9a09g011-pwc", "renesas,rzv2m-pwc"; + reg = <0 0xa3700000 0 0x800>; + gpio-controller; + #gpio-cells = <2>; + status = "disabled"; + }; + sys: system-controller@a3f03000 { compatible = "renesas,r9a09g011-sys"; reg = <0 0xa3f03000 0 0x400>; From patchwork Tue Jul 18 15:26:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrizio Castro X-Patchwork-Id: 13317411 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 aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3F46BEB64DD for ; Tue, 18 Jul 2023 15:26:40 +0000 (UTC) Received: from relmlie5.idc.renesas.com (relmlie5.idc.renesas.com [210.160.252.171]) by mx.groups.io with SMTP id smtpd.web11.10599.1689693994937474917 for ; Tue, 18 Jul 2023 08:26:37 -0700 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: renesas.com, ip: 210.160.252.171, mailfrom: fabrizio.castro.jz@renesas.com) X-IronPort-AV: E=Sophos;i="6.01,214,1684767600"; d="scan'208";a="169777547" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 19 Jul 2023 00:26:36 +0900 Received: from mulinux.home (unknown [10.226.93.62]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id B7CE24007143; Wed, 19 Jul 2023 00:26:34 +0900 (JST) From: Fabrizio Castro To: cip-dev@lists.cip-project.org, Nobuhiro Iwamatsu , Pavel Machek Cc: Biju Das , Lad Prabhakar , Chris Paterson , Fabrizio Castro Subject: [PATCH 6.1.y-cip 4/4] arm64: dts: renesas: v2mevk2: Add PWC support Date: Tue, 18 Jul 2023 16:26:22 +0100 Message-Id: <20230718152622.327364-5-fabrizio.castro.jz@renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230718152622.327364-1-fabrizio.castro.jz@renesas.com> References: <20230718152622.327364-1-fabrizio.castro.jz@renesas.com> MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 18 Jul 2023 15:26:40 -0000 X-Groupsio-URL: https://lists.cip-project.org/g/cip-dev/message/12402 Commit 3d28ccb9b37db5f17ec1b41c31718cd9842d5dbf upstream. The RZ/V2M EVK uses the PWC IP to control external power supplies and the I/O voltage for the uSD card. This patch enables the PWC node, and it also enables the poweroff features since PWC is actually used to control the board power rails. Signed-off-by: Fabrizio Castro Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20230118144747.24968-3-fabrizio.castro.jz@renesas.com Signed-off-by: Geert Uytterhoeven Signed-off-by: Fabrizio Castro --- arch/arm64/boot/dts/renesas/r9a09g011-v2mevk2.dts | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r9a09g011-v2mevk2.dts b/arch/arm64/boot/dts/renesas/r9a09g011-v2mevk2.dts index 0f170fd4227b..8b7f6da693a7 100644 --- a/arch/arm64/boot/dts/renesas/r9a09g011-v2mevk2.dts +++ b/arch/arm64/boot/dts/renesas/r9a09g011-v2mevk2.dts @@ -136,6 +136,11 @@ uart0_pins: uart0 { }; }; +&pwc { + renesas,rzv2m-pwc-power; + status = "okay"; +}; + &uart0 { pinctrl-0 = <&uart0_pins>; pinctrl-names = "default";