From nobody Fri Oct 3 11:22:22 2025 Received: from layka.disroot.org (layka.disroot.org [178.21.23.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 001843314AF; Mon, 1 Sep 2025 13:38:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.21.23.139 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756733914; cv=none; b=UzuPWghhKAUq+2ks1AcydLzeUWbwVQYbeZwaFzKNuY0x/E2crgrlBzSK0lEgQ1KGGy6KmsVd8uJOHws2fvDXcjWssRsnB6ZZkrkVFriLenM74p8/jQayiBiHiVmMcE2UYncA1PH0PYWve3b3ig20NG3qLD6HILpcUSWNaGSpXcU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756733914; c=relaxed/simple; bh=LOMVwhCj+jjyPYlIVU2ct3Dp3VQW+O3+nR63vMu7r8Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=deOPv26Ax6tixezY5zc23pPeMqS1vPXQyMRO0lc1CRw3lM1wONMRQiqXvfY0dZ6YGsgRFo2l4DiB2ggLdkxZePlmNOctUDcF5Ls/U1Wwvl2tA4QN5duMkyRcZx2XzAl6FzZGOytFyLyCWyqsQqcfbg32y5D/SsCmTjVrbuUMFfQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org; spf=pass smtp.mailfrom=disroot.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b=Ekq0so1u; arc=none smtp.client-ip=178.21.23.139 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=disroot.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b="Ekq0so1u" Received: from mail01.disroot.lan (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 6D75C20F5E; Mon, 1 Sep 2025 15:38:30 +0200 (CEST) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id Sg5SsRGHO6cE; Mon, 1 Sep 2025 15:38:29 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1756733909; bh=LOMVwhCj+jjyPYlIVU2ct3Dp3VQW+O3+nR63vMu7r8Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Ekq0so1uxYaJkKB2VLtEkIGVgZAOx1ECixTvBXUAqpzKLPDiPzlL0rXjz9bOu4isJ Vtk6e6hGPg3XJkcz18y0G77gJxyZvGDk0XG94+RduGAvc0tqI+2jaL3ymfrmNsTqlZ c4nYYWg7Gtr4uivMNheNfVR8fl2vJLNAeboljMeJFUW2Xae2ZLub64lTTSYnbT4/pv Xe+aZoNaC2dZcFCgzN8FOU9kRfuK9UWLY/3qAgsgyDiBM2BIMwgpWKRHjYGzf8umtZ s1UnP9vaG7giIwYYZoRNDiRIaZEqegfr30sRnhfYDjD592HgGcg/FzJPDOiSK9nBSA WEelyH/2v9oLQ== From: Yao Zi To: Yinbo Zhu , Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Huacai Chen , WANG Xuerui , Philipp Zabel Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, Mingcong Bai , Kexy Biscuit , Yao Zi , Krzysztof Kozlowski Subject: [PATCH v2 1/3] dt-bindings: gpio: loongson: Document GPIO controller of 2K0300 SoC Date: Mon, 1 Sep 2025 13:38:02 +0000 Message-ID: <20250901133804.38433-2-ziyao@disroot.org> In-Reply-To: <20250901133804.38433-1-ziyao@disroot.org> References: <20250901133804.38433-1-ziyao@disroot.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Loongson 2K0300 ships a GPIO controller whose input/output control logic is similar to previous generation of SoCs. Additionally, it acts as an interrupt-controller supporting both level and edge interrupts and has a distinct reset signal. Describe its compatible in devicetree. We enlarge the maximum value of ngpios to 128, since the controller technically supports at most 128 pins, although only 106 are routed out of the package. Properties for interrupt-controllers and resets are introduced and limited as 2K0300 only. Signed-off-by: Yao Zi Reviewed-by: Krzysztof Kozlowski Reviewed-by: Huacai Chen --- .../bindings/gpio/loongson,ls-gpio.yaml | 28 ++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml b= /Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml index b68159600e2b..69852444df23 100644 --- a/Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml +++ b/Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml @@ -14,6 +14,7 @@ properties: oneOf: - enum: - loongson,ls2k-gpio + - loongson,ls2k0300-gpio - loongson,ls2k0500-gpio0 - loongson,ls2k0500-gpio1 - loongson,ls2k2000-gpio0 @@ -36,7 +37,7 @@ properties: =20 ngpios: minimum: 1 - maximum: 64 + maximum: 128 =20 "#gpio-cells": const: 2 @@ -49,6 +50,14 @@ properties: minItems: 1 maxItems: 64 =20 + "#interrupt-cells": + const: 2 + + interrupt-controller: true + + resets: + maxItems: 1 + required: - compatible - reg @@ -58,6 +67,23 @@ required: - gpio-ranges - interrupts =20 +allOf: + - if: + properties: + compatible: + contains: + const: loongson,ls2k0300-gpio + then: + required: + - "#interrupt-cells" + - interrupt-controller + - resets + else: + properties: + "#interrupts-cells": false + interrupt-controller: false + resets: false + additionalProperties: false =20 examples: --=20 2.50.1 From nobody Fri Oct 3 11:22:22 2025 Received: from layka.disroot.org (layka.disroot.org [178.21.23.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6DCD5334372; Mon, 1 Sep 2025 13:38:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.21.23.139 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756733921; cv=none; b=eW4ny7DvaNYUbFruflribZwNL6+9dFNeovQ75SszucxjxLiM/Q6c3CeopTCk9091ygdkIPemwII4ehn90Q/afj/zzIMLZG6Cngkyurw3ER/AN4ByT6apoE4/+Gu0rYTyG/0RejuqOA4qhh3kA4BK5rzEdmfdxoLaYGXq0sjpZu8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756733921; c=relaxed/simple; bh=LthOadmCe99IqMTEDUMCM4hdMYnsn5+8gWtszlPtwF4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gAxM8Y8XG7SHfcS4ussMHJu3hDmKLxgoLtuBZ+qcVwmkiDw+N9p7OQtNC4Pb7bJKl+xmFIXoek5ajzaB3oIzzvPsS3zF5ALQAAROsteMkOleKNcTotuOB99nZucE6v3/bxSyxaDTrIdZUDzjgbOYQHZOZj6a64ufs1fEnIpR7Ao= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org; spf=pass smtp.mailfrom=disroot.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b=cLOOmEo2; arc=none smtp.client-ip=178.21.23.139 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=disroot.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b="cLOOmEo2" Received: from mail01.disroot.lan (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 03A0720E20; Mon, 1 Sep 2025 15:38:38 +0200 (CEST) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id oj-hG7Cojhee; Mon, 1 Sep 2025 15:38:37 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1756733916; bh=LthOadmCe99IqMTEDUMCM4hdMYnsn5+8gWtszlPtwF4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=cLOOmEo2mOOnf+YEJ2f5Brpz8lBI1OZvJtKY8LRQu2HuRhr4GYJR83Cf30MxNNdpF o6qgPtyskUdsDEIdcLvvjbkYNJIeHUinv0/TSp2lrlvqSfQYbhDF5eeYkKb0CDZF2N TkASWpCeGqam8wHa4/H5HAbnVD5AvunfrMH8j7+4GRj5k0d1UhlefRoDTC/tjXftN3 /u31TovdeqQRYsD+MCWw0miUwQBnzXwjJ00mn+nM/cj6hvWguOxdeedR4n9d+uqEoL MEGmW7nqMuFjOhb6FIJSnpojSM4bjcaxdVWeNeio6sKBOXAOd4eXcw2iSpoSySCkRa VWSHDsmJ8x67A== From: Yao Zi To: Yinbo Zhu , Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Huacai Chen , WANG Xuerui , Philipp Zabel Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, Mingcong Bai , Kexy Biscuit , Yao Zi Subject: [PATCH v2 2/3] gpio: loongson-64bit: Add support for Loongson 2K0300 SoC Date: Mon, 1 Sep 2025 13:38:03 +0000 Message-ID: <20250901133804.38433-3-ziyao@disroot.org> In-Reply-To: <20250901133804.38433-1-ziyao@disroot.org> References: <20250901133804.38433-1-ziyao@disroot.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This controller's input and output logic is similar to previous generations of SoCs. Additionally, it's capable of interrupt masking, and could be configured to detect levels and edges, and is supplied with a distinct reset signal. The interrupt functionality is implemented through an irqchip, whose operations are written with previous generation SoCs in mind and could be reused. Since all Loongson SoCs with similar interrupt capability (2K1500, 2K2000) support byte-control mode, these operations are for byte-control mode only for simplicity. Signed-off-by: Yao Zi Reviewed-by: Huacai Chen --- drivers/gpio/Kconfig | 1 + drivers/gpio/gpio-loongson-64bit.c | 191 +++++++++++++++++++++++++++-- 2 files changed, 185 insertions(+), 7 deletions(-) diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index a437fe652dbc..c55173643eb4 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -437,6 +437,7 @@ config GPIO_LOONGSON_64BIT depends on LOONGARCH || COMPILE_TEST depends on OF_GPIO select GPIO_GENERIC + select GPIOLIB_IRQCHIP help Say yes here to support the GPIO functionality of a number of Loongson series of chips. The Loongson GPIO controller supports diff --git a/drivers/gpio/gpio-loongson-64bit.c b/drivers/gpio/gpio-loongso= n-64bit.c index 482e64ba9b42..7fb712e101ce 100644 --- a/drivers/gpio/gpio-loongson-64bit.c +++ b/drivers/gpio/gpio-loongson-64bit.c @@ -7,6 +7,8 @@ =20 #include #include +#include +#include #include #include #include @@ -14,6 +16,7 @@ #include #include #include +#include #include =20 enum loongson_gpio_mode { @@ -28,6 +31,14 @@ struct loongson_gpio_chip_data { unsigned int out_offset; unsigned int in_offset; unsigned int inten_offset; + unsigned int intpol_offset; + unsigned int intedge_offset; + unsigned int intclr_offset; + unsigned int intsts_offset; + unsigned int intdual_offset; + unsigned int intr_num; + irq_flow_handler_t irq_handler; + const struct irq_chip *girqchip; }; =20 struct loongson_gpio_chip { @@ -137,7 +148,140 @@ static int loongson_gpio_to_irq(struct gpio_chip *chi= p, unsigned int offset) return platform_get_irq(pdev, offset); } =20 -static int loongson_gpio_init(struct device *dev, struct loongson_gpio_chi= p *lgpio, +static void loongson_gpio_irq_ack(struct irq_data *data) +{ + struct gpio_chip *chip =3D irq_data_get_irq_chip_data(data); + struct loongson_gpio_chip *lgpio =3D to_loongson_gpio_chip(chip); + irq_hw_number_t hwirq =3D irqd_to_hwirq(data); + + writeb(0x1, lgpio->reg_base + lgpio->chip_data->intclr_offset + hwirq); +} + +static void loongson_gpio_irq_mask(struct irq_data *data) +{ + struct gpio_chip *chip =3D irq_data_get_irq_chip_data(data); + struct loongson_gpio_chip *lgpio =3D to_loongson_gpio_chip(chip); + irq_hw_number_t hwirq =3D irqd_to_hwirq(data); + + writeb(0x0, lgpio->reg_base + lgpio->chip_data->inten_offset + hwirq); +} + +static void loongson_gpio_irq_unmask(struct irq_data *data) +{ + struct gpio_chip *chip =3D irq_data_get_irq_chip_data(data); + struct loongson_gpio_chip *lgpio =3D to_loongson_gpio_chip(chip); + irq_hw_number_t hwirq =3D irqd_to_hwirq(data); + + writeb(0x1, lgpio->reg_base + lgpio->chip_data->inten_offset + hwirq); +} + +static int loongson_gpio_irq_set_type(struct irq_data *data, unsigned int = type) +{ + struct gpio_chip *chip =3D irq_data_get_irq_chip_data(data); + struct loongson_gpio_chip *lgpio =3D to_loongson_gpio_chip(chip); + irq_hw_number_t hwirq =3D irqd_to_hwirq(data); + u8 pol =3D 0, edge =3D 0, dual =3D 0; + + if ((type & IRQ_TYPE_SENSE_MASK) =3D=3D IRQ_TYPE_EDGE_BOTH) { + edge =3D 1; + dual =3D 1; + irq_set_handler_locked(data, handle_edge_irq); + } else { + switch (type) { + case IRQ_TYPE_LEVEL_HIGH: + pol =3D 1; + fallthrough; + case IRQ_TYPE_LEVEL_LOW: + irq_set_handler_locked(data, handle_level_irq); + break; + + case IRQ_TYPE_EDGE_RISING: + pol =3D 1; + fallthrough; + case IRQ_TYPE_EDGE_FALLING: + edge =3D 1; + irq_set_handler_locked(data, handle_edge_irq); + break; + + default: + return -EINVAL; + }; + } + + writeb(pol, lgpio->reg_base + lgpio->chip_data->intpol_offset + hwirq); + writeb(edge, lgpio->reg_base + lgpio->chip_data->intedge_offset + hwirq); + writeb(dual, lgpio->reg_base + lgpio->chip_data->intdual_offset + hwirq); + + return 0; +} + +static void loongson_gpio_ls2k0300_irq_handler(struct irq_desc *desc) +{ + struct loongson_gpio_chip *lgpio =3D irq_desc_get_handler_data(desc); + struct irq_chip *girqchip =3D irq_desc_get_chip(desc); + int i; + + chained_irq_enter(girqchip, desc); + + for (i =3D 0; i < lgpio->chip.gc.ngpio; i++) { + /* + * For the GPIO controller of 2K0300, interrupts status bits + * may be wrongly set even if the corresponding interrupt is + * disabled. Thus interrupt enable bits are checked along with + * status bits to detect interrupts reliably. + */ + if (readb(lgpio->reg_base + lgpio->chip_data->intsts_offset + i) && + readb(lgpio->reg_base + lgpio->chip_data->inten_offset + i)) + generic_handle_domain_irq(lgpio->chip.gc.irq.domain, i); + } + + chained_irq_exit(girqchip, desc); +} + +static const struct irq_chip loongson_gpio_ls2k0300_irqchip =3D { + .irq_ack =3D loongson_gpio_irq_ack, + .irq_mask =3D loongson_gpio_irq_mask, + .irq_unmask =3D loongson_gpio_irq_unmask, + .irq_set_type =3D loongson_gpio_irq_set_type, + .flags =3D IRQCHIP_IMMUTABLE | IRQCHIP_SKIP_SET_WAKE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, +}; + +static int loongson_gpio_init_irqchip(struct platform_device *pdev, + struct loongson_gpio_chip *lgpio) +{ + const struct loongson_gpio_chip_data *data =3D lgpio->chip_data; + struct gpio_chip *chip =3D &lgpio->chip.gc; + int i; + + chip->irq.default_type =3D IRQ_TYPE_NONE; + chip->irq.handler =3D handle_bad_irq; + chip->irq.parent_handler =3D data->irq_handler; + chip->irq.parent_handler_data =3D lgpio; + gpio_irq_chip_set_chip(&chip->irq, data->girqchip); + + chip->irq.num_parents =3D data->intr_num; + chip->irq.parents =3D devm_kcalloc(&pdev->dev, data->intr_num, + sizeof(*chip->irq.parents), GFP_KERNEL); + if (!chip->parent) + return -ENOMEM; + + for (i =3D 0; i < data->intr_num; i++) { + chip->irq.parents[i] =3D platform_get_irq(pdev, i); + if (chip->irq.parents[i] < 0) + return dev_err_probe(&pdev->dev, chip->irq.parents[i], + "failed to get IRQ %d\n", i); + } + + for (i =3D 0; i < data->intr_num; i++) { + writeb(0x0, lgpio->reg_base + data->inten_offset + i); + writeb(0x1, lgpio->reg_base + data->intclr_offset + i); + } + + return 0; +} + +static int loongson_gpio_init(struct platform_device *pdev, struct loongso= n_gpio_chip *lgpio, void __iomem *reg_base) { struct gpio_generic_chip_config config; @@ -146,7 +290,7 @@ static int loongson_gpio_init(struct device *dev, struc= t loongson_gpio_chip *lgp lgpio->reg_base =3D reg_base; if (lgpio->chip_data->mode =3D=3D BIT_CTRL_MODE) { config =3D (typeof(config)){ - .dev =3D dev, + .dev =3D &pdev->dev, .sz =3D 8, .dat =3D lgpio->reg_base + lgpio->chip_data->in_offset, .set =3D lgpio->reg_base + lgpio->chip_data->out_offset, @@ -155,7 +299,7 @@ static int loongson_gpio_init(struct device *dev, struc= t loongson_gpio_chip *lgp =20 ret =3D gpio_generic_chip_init(&lgpio->chip, &config); if (ret) { - dev_err(dev, "unable to init generic GPIO\n"); + dev_err(&pdev->dev, "unable to init generic GPIO\n"); return ret; } } else { @@ -164,16 +308,22 @@ static int loongson_gpio_init(struct device *dev, str= uct loongson_gpio_chip *lgp lgpio->chip.gc.get_direction =3D loongson_gpio_get_direction; lgpio->chip.gc.direction_output =3D loongson_gpio_direction_output; lgpio->chip.gc.set =3D loongson_gpio_set; - lgpio->chip.gc.parent =3D dev; + lgpio->chip.gc.parent =3D &pdev->dev; spin_lock_init(&lgpio->lock); } =20 lgpio->chip.gc.label =3D lgpio->chip_data->label; lgpio->chip.gc.can_sleep =3D false; - if (lgpio->chip_data->inten_offset) + if (lgpio->chip_data->girqchip) { + ret =3D loongson_gpio_init_irqchip(pdev, lgpio); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "failed to initialize irqchip\n"); + } else if (lgpio->chip_data->inten_offset) { lgpio->chip.gc.to_irq =3D loongson_gpio_to_irq; + } =20 - return devm_gpiochip_add_data(dev, &lgpio->chip.gc, lgpio); + return devm_gpiochip_add_data(&pdev->dev, &lgpio->chip.gc, lgpio); } =20 static int loongson_gpio_probe(struct platform_device *pdev) @@ -181,6 +331,7 @@ static int loongson_gpio_probe(struct platform_device *= pdev) void __iomem *reg_base; struct loongson_gpio_chip *lgpio; struct device *dev =3D &pdev->dev; + struct reset_control *rst; =20 lgpio =3D devm_kzalloc(dev, sizeof(*lgpio), GFP_KERNEL); if (!lgpio) @@ -192,7 +343,12 @@ static int loongson_gpio_probe(struct platform_device = *pdev) if (IS_ERR(reg_base)) return PTR_ERR(reg_base); =20 - return loongson_gpio_init(dev, lgpio, reg_base); + rst =3D devm_reset_control_get_optional_exclusive_deasserted(&pdev->dev, = NULL); + if (IS_ERR(rst)) + return dev_err_probe(&pdev->dev, PTR_ERR(rst), + "failed to get reset control\n"); + + return loongson_gpio_init(pdev, lgpio, reg_base); } =20 static const struct loongson_gpio_chip_data loongson_gpio_ls2k_data =3D { @@ -204,6 +360,23 @@ static const struct loongson_gpio_chip_data loongson_g= pio_ls2k_data =3D { .inten_offset =3D 0x30, }; =20 +static const struct loongson_gpio_chip_data loongson_gpio_ls2k0300_data = =3D { + .label =3D "ls2k0300_gpio", + .mode =3D BYTE_CTRL_MODE, + .conf_offset =3D 0x800, + .in_offset =3D 0xa00, + .out_offset =3D 0x900, + .inten_offset =3D 0xb00, + .intpol_offset =3D 0xc00, + .intedge_offset =3D 0xd00, + .intclr_offset =3D 0xe00, + .intsts_offset =3D 0xf00, + .intdual_offset =3D 0xf80, + .intr_num =3D 7, + .irq_handler =3D loongson_gpio_ls2k0300_irq_handler, + .girqchip =3D &loongson_gpio_ls2k0300_irqchip, +}; + static const struct loongson_gpio_chip_data loongson_gpio_ls2k0500_data0 = =3D { .label =3D "ls2k0500_gpio", .mode =3D BIT_CTRL_MODE, @@ -300,6 +473,10 @@ static const struct of_device_id loongson_gpio_of_matc= h[] =3D { .compatible =3D "loongson,ls2k-gpio", .data =3D &loongson_gpio_ls2k_data, }, + { + .compatible =3D "loongson,ls2k0300-gpio", + .data =3D &loongson_gpio_ls2k0300_data, + }, { .compatible =3D "loongson,ls2k0500-gpio0", .data =3D &loongson_gpio_ls2k0500_data0, --=20 2.50.1 From nobody Fri Oct 3 11:22:22 2025 Received: from layka.disroot.org (layka.disroot.org [178.21.23.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3CA823375B2; Mon, 1 Sep 2025 13:39:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.21.23.139 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756733975; cv=none; b=frr9xuqL6yVx52Uw3O1eeSwwRu792v0aOayKLeFN0asxuanVV19iR2+s4jJXGu79Ki6Jtpy8cCPw4wd+OWJXym7454wU1CEaCZzt4D004Cr8xTtU7Y4Hu3ZIj9YprOEi8ccQY3Rkn5xwo3LGkM+oVhBFb40trVBWak1FR6VWv5A= ARC-Message-Signature: i=1; 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Mon, 1 Sep 2025 15:39:32 +0200 (CEST) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id DjDEYYP8-OSB; Mon, 1 Sep 2025 15:39:32 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1756733972; bh=z+QX49317csTrXfz8J0F5bFGxPypVOXL9Q3FPo0GCeU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=CkquwShr5zEwu49uYpWOfglTQHSyIV4nbnC74DI55f4Yl1iVqnqTmXIT6+dM24KKn NSPAaKORj4I2Lt0b3ZgS8a7yjWjkL/s/uJlD9GxDvaI1pXo/IURxb+Qhh3Hz69xvCM ETWjMEh7asSKef0e+fQtBHNzRxgdC7mO5Wq+rBUcUp0BKVLNNCTZ09HeqJib58EX0+ oyNOVSfq4uQuJMIy7RsJJJiROA3kl/AzvZB5VvMIGY+WaIwB3b2c8eCAmCu1FHdrx/ lD223hz1YpSOPj6uWka95qriPNAWgvs4A2GEVtBJID0hf1/C8+he+CewZJvIz/oiMO 48dVSiK2N+n0Q== From: Yao Zi To: Yinbo Zhu , Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Huacai Chen , WANG Xuerui , Philipp Zabel Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, Mingcong Bai , Kexy Biscuit , Yao Zi Subject: [PATCH v2 3/3] LoongArch: dts: Add GPIO controller for Loongson 2K0300 Date: Mon, 1 Sep 2025 13:38:04 +0000 Message-ID: <20250901133804.38433-4-ziyao@disroot.org> In-Reply-To: <20250901133804.38433-1-ziyao@disroot.org> References: <20250901133804.38433-1-ziyao@disroot.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Describe Loongson 2K0300's GPIO controller in devicetree. Signed-off-by: Yao Zi --- arch/loongarch/boot/dts/loongson-2k0300.dtsi | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/loongarch/boot/dts/loongson-2k0300.dtsi b/arch/loongarch/= boot/dts/loongson-2k0300.dtsi index 835d3c63537b..60a055b05c44 100644 --- a/arch/loongarch/boot/dts/loongson-2k0300.dtsi +++ b/arch/loongarch/boot/dts/loongson-2k0300.dtsi @@ -240,6 +240,26 @@ uart9: serial@16102400 { status =3D "disabled"; }; =20 + gpio: gpio@16104000 { + compatible =3D "loongson,ls2k0300-gpio"; + reg =3D <0x0 0x16104000 0x0 0x4000>; + interrupt-parent =3D <&liointc1>; + interrupts =3D <21 IRQ_TYPE_LEVEL_HIGH>, + <22 IRQ_TYPE_LEVEL_HIGH>, + <23 IRQ_TYPE_LEVEL_HIGH>, + <24 IRQ_TYPE_LEVEL_HIGH>, + <25 IRQ_TYPE_LEVEL_HIGH>, + <26 IRQ_TYPE_LEVEL_HIGH>, + <27 IRQ_TYPE_LEVEL_HIGH>; + ngpios =3D <106>; + gpio-controller; + gpio-ranges =3D <&pinctrl 0 0 106>; + #gpio-cells =3D <2>; + interrupt-controller; + #interrupt-cells =3D <2>; + resets =3D <&rst RST_GPIO>; + }; + isa@16400000 { compatible =3D "isa"; #address-cells =3D <2>; --=20 2.50.1