From patchwork Thu Sep 26 15:57:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ze Huang <18771902331@163.com> X-Patchwork-Id: 1989882 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=163.com header.i=@163.com header.a=rsa-sha256 header.s=s110527 header.b=PoymsWGC; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2604:1380:45d1:ec00::1; helo=ny.mirrors.kernel.org; envelope-from=linux-gpio+bounces-10465-incoming=patchwork.ozlabs.org@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org [IPv6:2604:1380:45d1:ec00::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XDyvB48R5z1xt6 for ; 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spf=pass smtp.mailfrom=163.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Date:Subject:MIME-Version:Content-Type: Message-Id; bh=mty+cdJRqv0WA4yEuN8JbkJ3vgLRawx+ZI6WiLYKKXg=; b=P oymsWGC6QzTJn2BpALlcxIyJgWCCKLefjZHffOTQSKUKhZxj0tjLznSqq4jjoC38 YA2nH7/rDodr0spi5rrAmEI1D2jwmAcUGSNfLThiNiGf5mZ7svzt8Rf5WgqSYoUK 6iTQMc9f+JYpUJZf3JJgfbGbakTBbBwXRwWzQcA92w= Received: from [127.0.0.1] (unknown [27.18.107.33]) by gzsmtp3 (Coremail) with SMTP id sigvCgBHA3OFhPVmTIX3AA--.42449S3; Thu, 26 Sep 2024 23:57:58 +0800 (CST) From: Ze Huang <18771902331@163.com> Date: Thu, 26 Sep 2024 23:57:43 +0800 Subject: [PATCH v2 1/3] dt-bindings: pinctrl: Add support for canaan,k230 SoC Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240926-k230-pinctrl-v2-1-a9a36fba4b34@163.com> References: <20240926-k230-pinctrl-v2-0-a9a36fba4b34@163.com> In-Reply-To: <20240926-k230-pinctrl-v2-0-a9a36fba4b34@163.com> To: Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Conor Dooley Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Ze Huang <18771902331@163.com> X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; 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Signed-off-by: Ze Huang <18771902331@163.com> Reviewed-by: Rob Herring (Arm) --- .../bindings/pinctrl/canaan,k230-pinctrl.yaml | 127 +++++++++++++++++++++ 1 file changed, 127 insertions(+) diff --git a/Documentation/devicetree/bindings/pinctrl/canaan,k230-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/canaan,k230-pinctrl.yaml new file mode 100644 index 0000000000000000000000000000000000000000..0b462eb6dfe169a292bf716503c03d029f1ac7ee --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/canaan,k230-pinctrl.yaml @@ -0,0 +1,127 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/canaan,k230-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Canaan Kendryte K230 Pin Controller + +maintainers: + - Ze Huang <18771902331@163.com> + +description: + The Canaan Kendryte K230 platform includes 64 IO pins, each capable of + multiplexing up to 5 different functions. Pin function configuration is + performed on a per-pin basis. + +properties: + compatible: + const: canaan,k230-pinctrl + + reg: + maxItems: 1 + +patternProperties: + '-pins$': + type: object + additionalProperties: false + description: + A pinctrl node should contain at least one subnode representing the + pinctrl groups available on the machine. + + patternProperties: + '-cfg$': + type: object + allOf: + - $ref: /schemas/pinctrl/pincfg-node.yaml + - $ref: /schemas/pinctrl/pinmux-node.yaml + additionalProperties: false + description: + Each subnode will list the pins it needs, and how they should + be configured, with regard to muxer configuration, bias, input + enable/disable, input schmitt trigger, slew-rate enable/disable, + slew-rate, drive strength. + + properties: + pinmux: + description: + The list of GPIOs and their mux settings that properties in + the node apply to. This should be set with the macro + 'K230_PINMUX(pin, mode)' + + bias-disable: true + + bias-pull-up: true + + bias-pull-down: true + + drive-strength: + minimum: 0 + maximum: 15 + + input-enable: true + + output-enable: true + + input-schmitt-enable: true + + slew-rate: + description: | + slew rate control enable + 0: disable + 1: enable + + enum: [0, 1] + + power-source: + description: | + Specifies the power source voltage for the IO bank that the + pin belongs to. Each bank of IO pins operate at a specific, + fixed voltage levels. Incorrect voltage configuration can + damage the chip. The defined constants represent the + possible voltage configurations: + + - K230_MSC_3V3 (value 0): 3.3V power supply + - K230_MSC_1V8 (value 1): 1.8V power supply + + The following banks have the corresponding voltage + configurations: + + - bank IO0 to IO1: Fixed at 1.8V + - bank IO2 to IO13: Fixed at 1.8V + - bank IO14 to IO25: Fixed at 1.8V + - bank IO26 to IO37: Fixed at 1.8V + - bank IO38 to IO49: Fixed at 1.8V + - bank IO50 to IO61: Fixed at 3.3V + - bank IO62 to IO63: Fixed at 1.8V + + enum: [0, 1] + + required: + - pinmux + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + pinctrl@91105000 { + compatible = "canaan,k230-pinctrl"; + reg = <0x91105000 0x100>; + + uart2-pins { + uart2-pins-cfg { + pinmux = <0x503>, /* uart2 txd */ + <0x603>; /* uart2 rxd */ + slew-rate = <0>; + drive-strength = <4>; + power-source = <1>; + input-enable; + output-enable; + bias-disable; + }; + }; + }; From patchwork Thu Sep 26 15:57:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ze Huang <18771902331@163.com> X-Patchwork-Id: 1989886 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=163.com header.i=@163.com header.a=rsa-sha256 header.s=s110527 header.b=JrNoOMWq; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2604:1380:45d1:ec00::1; helo=ny.mirrors.kernel.org; envelope-from=linux-gpio+bounces-10467-incoming=patchwork.ozlabs.org@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org [IPv6:2604:1380:45d1:ec00::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XDyvf424hz1xt6 for ; 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spf=pass smtp.mailfrom=163.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Date:Subject:MIME-Version:Content-Type: Message-Id; bh=noEnpocZsoyN3gcaqwys6CYdKo69ur/OBzfvM5ocTBA=; b=J rNoOMWqqvdCyGVpqUTp80EJp9bbsU3YQhtH8b4DdCRxGf+NaVQy0ujafmVfFgeRF MSddsacid7iGmwIZPFt9Wo7g9pDjaaes4e7XGLnI+epsXOiynn0asctKQT8R7XWe 226KL8Ir5sV5LsZjYuBpIb1fCvTmN+5pxBncdxGi2Q= Received: from [127.0.0.1] (unknown [27.18.107.33]) by gzsmtp3 (Coremail) with SMTP id sigvCgBHA3OFhPVmTIX3AA--.42449S4; Thu, 26 Sep 2024 23:57:59 +0800 (CST) From: Ze Huang <18771902331@163.com> Date: Thu, 26 Sep 2024 23:57:44 +0800 Subject: [PATCH v2 2/3] pinctrl: canaan: Add support for k230 SoC Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240926-k230-pinctrl-v2-2-a9a36fba4b34@163.com> References: <20240926-k230-pinctrl-v2-0-a9a36fba4b34@163.com> In-Reply-To: <20240926-k230-pinctrl-v2-0-a9a36fba4b34@163.com> To: Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Conor Dooley Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Ze Huang <18771902331@163.com> X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; 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However, in K210, the 256 functions for each pin are shared, whereas in K230, multiplex functions are different for every pin. `drv_data` of `pinctrl_pin_desc` is pointing to currently activated group, which is used to print the name of current function of pin in `pin_dbg_show` and will be updated in `set_mux`, so they are not set const. Signed-off-by: Ze Huang <18771902331@163.com> --- drivers/pinctrl/Kconfig | 10 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-k230.c | 643 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 654 insertions(+) diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 7e4f93a3bc7ac9bcafc92ddb795569d7cca6474d..dc840915f1ce806cdab3607f8835c79111136a79 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -246,6 +246,16 @@ config PINCTRL_K210 Add support for the Canaan Kendryte K210 RISC-V SOC Field Programmable IO Array (FPIOA) controller. +config PINCTRL_K230 + bool "Pinctrl driver for the Canaan Kendryte K230 SoC" + depends on OF + select GENERIC_PINCTRL_GROUPS + select GENERIC_PINMUX_FUNCTIONS + select GENERIC_PINCONF + select REGMAP_MMIO + help + Add support for the Canaan Kendryte K230 RISC-V SOC pin controller. + config PINCTRL_KEEMBAY tristate "Pinctrl driver for Intel Keem Bay SoC" depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST) diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index cc809669405ab6c6905fe0b2380f91b211a2d470..7579899b0124e91aeb44ad76b6eb5cad92cd2b95 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -26,6 +26,7 @@ obj-$(CONFIG_PINCTRL_EQUILIBRIUM) += pinctrl-equilibrium.o obj-$(CONFIG_PINCTRL_GEMINI) += pinctrl-gemini.o obj-$(CONFIG_PINCTRL_INGENIC) += pinctrl-ingenic.o obj-$(CONFIG_PINCTRL_K210) += pinctrl-k210.o +obj-$(CONFIG_PINCTRL_K230) += pinctrl-k230.o obj-$(CONFIG_PINCTRL_KEEMBAY) += pinctrl-keembay.o obj-$(CONFIG_PINCTRL_LANTIQ) += pinctrl-lantiq.o obj-$(CONFIG_PINCTRL_FALCON) += pinctrl-falcon.o diff --git a/drivers/pinctrl/pinctrl-k230.c b/drivers/pinctrl/pinctrl-k230.c new file mode 100644 index 0000000000000000000000000000000000000000..4266516886fce6b5861d7d9435a3c6719f013bee --- /dev/null +++ b/drivers/pinctrl/pinctrl-k230.c @@ -0,0 +1,643 @@ +// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +/* + * Copyright (C) 2024 Canaan Bright Sight Co. Ltd + * Copyright (C) 2024 Ze Huang <18771902331@163.com> + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "core.h" +#include "pinconf.h" + +#define K230_NPINS 64 + +#define K230_SHIFT_ST (0) +#define K230_SHIFT_DS (1) +#define K230_SHIFT_BIAS (5) +#define K230_SHIFT_PD (5) +#define K230_SHIFT_PU (6) +#define K230_SHIFT_OE (7) +#define K230_SHIFT_IE (8) +#define K230_SHIFT_MSC (9) +#define K230_SHIFT_SL (10) +#define K230_SHIFT_SEL (11) + +#define K230_PC_ST BIT(0) +#define K230_PC_DS GENMASK(4, 1) +#define K230_PC_PD BIT(5) +#define K230_PC_PU BIT(6) +#define K230_PC_BIAS GENMASK(6, 5) +#define K230_PC_OE BIT(7) +#define K230_PC_IE BIT(8) +#define K230_PC_MSC BIT(9) +#define K230_PC_SL BIT(10) +#define K230_PC_SEL GENMASK(13, 11) + +struct k230_pin_conf { + unsigned int func; + unsigned long *configs; + unsigned int nconfigs; +}; + +struct k230_pin_group { + const char *name; + unsigned int *pins; + unsigned int num_pins; + + struct k230_pin_conf *data; +}; + +struct k230_pmx_func { + const char *name; + const char **groups; + unsigned int *group_idx; + unsigned int ngroups; +}; + +struct k230_pinctrl { + struct pinctrl_desc pctl; + struct pinctrl_dev *pctl_dev; + struct regmap *regmap_base; + void __iomem *base; + struct k230_pin_group *groups; + unsigned int ngroups; + struct k230_pmx_func *functions; + unsigned int nfunctions; +}; + +static const struct regmap_config k230_regmap_config = { + .name = "canaan,pinctrl", + .reg_bits = 32, + .val_bits = 32, + .max_register = 0x100, + .reg_stride = 4, +}; + +static int k230_get_groups_count(struct pinctrl_dev *pctldev) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + + return info->ngroups; +} + +static const char *k230_get_group_name(struct pinctrl_dev *pctldev, + unsigned int selector) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + + return info->groups[selector].name; +} + +static int k230_get_group_pins(struct pinctrl_dev *pctldev, + unsigned int selector, + const unsigned int **pins, + unsigned int *num_pins) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + + if (selector >= info->ngroups) + return -EINVAL; + + *pins = info->groups[selector].pins; + *num_pins = info->groups[selector].num_pins; + + return 0; +} + +static inline const struct k230_pmx_func *k230_name_to_funtion( + const struct k230_pinctrl *info, const char *name) +{ + unsigned int i; + + for (i = 0; i < info->nfunctions; i++) { + if (!strcmp(info->functions[i].name, name)) + return &info->functions[i]; + } + + return NULL; +} + +static struct pinctrl_pin_desc k230_pins[] = { + PINCTRL_PIN(0, "IO0"), PINCTRL_PIN(1, "IO1"), PINCTRL_PIN(2, "IO2"), + PINCTRL_PIN(3, "IO3"), PINCTRL_PIN(4, "IO4"), PINCTRL_PIN(5, "IO5"), + PINCTRL_PIN(6, "IO6"), PINCTRL_PIN(7, "IO7"), PINCTRL_PIN(8, "IO8"), + PINCTRL_PIN(9, "IO9"), PINCTRL_PIN(10, "IO10"), PINCTRL_PIN(11, "IO11"), + PINCTRL_PIN(12, "IO12"), PINCTRL_PIN(13, "IO13"), PINCTRL_PIN(14, "IO14"), + PINCTRL_PIN(15, "IO15"), PINCTRL_PIN(16, "IO16"), PINCTRL_PIN(17, "IO17"), + PINCTRL_PIN(18, "IO18"), PINCTRL_PIN(19, "IO19"), PINCTRL_PIN(20, "IO20"), + PINCTRL_PIN(21, "IO21"), PINCTRL_PIN(22, "IO22"), PINCTRL_PIN(23, "IO23"), + PINCTRL_PIN(24, "IO24"), PINCTRL_PIN(25, "IO25"), PINCTRL_PIN(26, "IO26"), + PINCTRL_PIN(27, "IO27"), PINCTRL_PIN(28, "IO28"), PINCTRL_PIN(29, "IO29"), + PINCTRL_PIN(30, "IO30"), PINCTRL_PIN(31, "IO31"), PINCTRL_PIN(32, "IO32"), + PINCTRL_PIN(33, "IO33"), PINCTRL_PIN(34, "IO34"), PINCTRL_PIN(35, "IO35"), + PINCTRL_PIN(36, "IO36"), PINCTRL_PIN(37, "IO37"), PINCTRL_PIN(38, "IO38"), + PINCTRL_PIN(39, "IO39"), PINCTRL_PIN(40, "IO40"), PINCTRL_PIN(41, "IO41"), + PINCTRL_PIN(42, "IO42"), PINCTRL_PIN(43, "IO43"), PINCTRL_PIN(44, "IO44"), + PINCTRL_PIN(45, "IO45"), PINCTRL_PIN(46, "IO46"), PINCTRL_PIN(47, "IO47"), + PINCTRL_PIN(48, "IO48"), PINCTRL_PIN(49, "IO49"), PINCTRL_PIN(50, "IO50"), + PINCTRL_PIN(51, "IO51"), PINCTRL_PIN(52, "IO52"), PINCTRL_PIN(53, "IO53"), + PINCTRL_PIN(54, "IO54"), PINCTRL_PIN(55, "IO55"), PINCTRL_PIN(56, "IO56"), + PINCTRL_PIN(57, "IO57"), PINCTRL_PIN(58, "IO58"), PINCTRL_PIN(59, "IO59"), + PINCTRL_PIN(60, "IO60"), PINCTRL_PIN(61, "IO61"), PINCTRL_PIN(62, "IO62"), + PINCTRL_PIN(63, "IO63") +}; + +static void k230_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev, + struct seq_file *s, unsigned int offset) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + u32 val, mode, bias, drive, input, output, slew, schmitt, power; + struct k230_pin_group *grp = k230_pins[offset].drv_data; + static const char * const biasing[] = { + "pull none", "pull down", "pull up", "" }; + static const char * const enable[] = { + "disable", "enable" }; + static const char * const power_source[] = { + "3V3", "1V8" }; + + regmap_read(info->regmap_base, offset * 4, &val); + + mode = (val & K230_PC_SEL) >> K230_SHIFT_SEL; + drive = (val & K230_PC_DS) >> K230_SHIFT_DS; + bias = (val & K230_PC_BIAS) >> K230_SHIFT_BIAS; + input = (val & K230_PC_IE) >> K230_SHIFT_IE; + output = (val & K230_PC_OE) >> K230_SHIFT_OE; + slew = (val & K230_PC_SL) >> K230_SHIFT_SL; + schmitt = (val & K230_PC_ST) >> K230_SHIFT_ST; + power = (val & K230_PC_MSC) >> K230_SHIFT_MSC; + + seq_printf(s, "%s - strength %d - %s - %s - slewrate %s - schmitt %s - %s", + grp ? grp->name : "unknown", + drive, + biasing[bias], + input ? "input" : "output", + enable[slew], + enable[schmitt], + power_source[power]); +} + +static int k230_dt_node_to_map(struct pinctrl_dev *pctldev, + struct device_node *np_config, + struct pinctrl_map **map, + unsigned int *num_maps) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + struct device *dev = info->pctl_dev->dev; + const struct k230_pmx_func *func; + const struct k230_pin_group *grp; + struct pinctrl_map *new_map; + int map_num, i, j, idx; + unsigned int grp_id; + + func = k230_name_to_funtion(info, np_config->name); + if (!func) { + dev_err(dev, "function %s not found\n", np_config->name); + return -EINVAL; + } + + map_num = 0; + for (i = 0; i < func->ngroups; ++i) { + grp_id = func->group_idx[i]; + /* npins of config map plus a mux map */ + map_num += info->groups[grp_id].num_pins + 1; + } + + new_map = kcalloc(map_num, sizeof(*new_map), GFP_KERNEL); + if (!new_map) + return -ENOMEM; + *map = new_map; + *num_maps = map_num; + + idx = 0; + for (i = 0; i < func->ngroups; ++i) { + grp_id = func->group_idx[i]; + grp = &info->groups[grp_id]; + new_map[idx].type = PIN_MAP_TYPE_MUX_GROUP; + new_map[idx].data.mux.group = grp->name; + new_map[idx].data.mux.function = np_config->name; + idx++; + + for (j = 0; j < grp->num_pins; ++j) { + new_map[idx].type = PIN_MAP_TYPE_CONFIGS_PIN; + new_map[idx].data.configs.group_or_pin = + pin_get_name(pctldev, grp->pins[j]); + new_map[idx].data.configs.configs = + grp->data[j].configs; + new_map[idx].data.configs.num_configs = + grp->data[j].nconfigs; + idx++; + } + } + + return 0; +} + +static void k230_dt_free_map(struct pinctrl_dev *pctldev, + struct pinctrl_map *map, unsigned int num_maps) +{ + kfree(map); +} + +static const struct pinctrl_ops k230_pctrl_ops = { + .get_groups_count = k230_get_groups_count, + .get_group_name = k230_get_group_name, + .get_group_pins = k230_get_group_pins, + .pin_dbg_show = k230_pinctrl_pin_dbg_show, + .dt_node_to_map = k230_dt_node_to_map, + .dt_free_map = k230_dt_free_map, +}; + +static int k230_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin, + unsigned long *config) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + enum pin_config_param param = pinconf_to_config_param(*config); + unsigned int val, arg; + + regmap_read(info->regmap_base, pin * 4, &val); + + switch (param) { + case PIN_CONFIG_INPUT_SCHMITT_ENABLE: + arg = (val & K230_PC_ST) ? 1 : 0; + break; + case PIN_CONFIG_DRIVE_STRENGTH: + arg = (val & K230_PC_DS) >> K230_SHIFT_DS; + break; + case PIN_CONFIG_BIAS_DISABLE: + arg = (val & K230_PC_BIAS) ? 0 : 1; + break; + case PIN_CONFIG_BIAS_PULL_DOWN: + arg = (val & K230_PC_PD) ? 1 : 0; + break; + case PIN_CONFIG_BIAS_PULL_UP: + arg = (val & K230_PC_PU) ? 1 : 0; + break; + case PIN_CONFIG_OUTPUT_ENABLE: + arg = (val & K230_PC_OE) ? 1 : 0; + break; + case PIN_CONFIG_INPUT_ENABLE: + arg = (val & K230_PC_IE) ? 1 : 0; + break; + case PIN_CONFIG_POWER_SOURCE: + arg = (val & K230_PC_MSC) ? 1 : 0; + break; + case PIN_CONFIG_SLEW_RATE: + arg = (val & K230_PC_SL) ? 1 : 0; + break; + default: + return -EINVAL; + } + + *config = pinconf_to_config_packed(param, arg); + + return 0; +} + +static int k230_pinconf_set_param(struct pinctrl_dev *pctldev, unsigned int pin, + enum pin_config_param param, unsigned int arg) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + unsigned int val; + + regmap_read(info->regmap_base, pin * 4, &val); + + switch (param) { + case PIN_CONFIG_INPUT_SCHMITT_ENABLE: + if (arg) + val |= K230_PC_ST; + else + val &= ~K230_PC_ST; + break; + case PIN_CONFIG_DRIVE_STRENGTH: + val &= ~K230_PC_DS; + val |= (arg << K230_SHIFT_DS) & K230_PC_DS; + break; + case PIN_CONFIG_BIAS_DISABLE: + val &= ~K230_PC_BIAS; + break; + case PIN_CONFIG_BIAS_PULL_DOWN: + if (!arg) + return -EINVAL; + val |= K230_PC_PD; + break; + case PIN_CONFIG_BIAS_PULL_UP: + if (!arg) + return -EINVAL; + val |= K230_PC_PU; + break; + case PIN_CONFIG_OUTPUT_ENABLE: + if (!arg) + return -EINVAL; + val |= K230_PC_OE; + break; + case PIN_CONFIG_INPUT_ENABLE: + if (!arg) + return -EINVAL; + val |= K230_PC_IE; + break; + case PIN_CONFIG_POWER_SOURCE: + if (arg) + val |= K230_PC_MSC; + else + val &= ~K230_PC_MSC; + break; + case PIN_CONFIG_SLEW_RATE: + if (arg) + val |= K230_PC_SL; + else + val &= ~K230_PC_SL; + break; + default: + return -EINVAL; + } + + regmap_write(info->regmap_base, pin * 4, val); + + return 0; +} + +static int k230_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, + unsigned long *configs, unsigned int num_configs) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + struct device *dev = info->pctl_dev->dev; + enum pin_config_param param; + unsigned int arg, i; + int ret; + + if (pin >= K230_NPINS) { + dev_err(dev, "pin number out of range\n"); + return -EINVAL; + } + + for (i = 0; i < num_configs; i++) { + param = pinconf_to_config_param(configs[i]); + arg = pinconf_to_config_argument(configs[i]); + ret = k230_pinconf_set_param(pctldev, pin, param, arg); + if (ret) + return ret; + } + + return 0; +} + +static void k230_pconf_dbg_show(struct pinctrl_dev *pctldev, + struct seq_file *s, unsigned int pin) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + unsigned int val; + + regmap_read(info->regmap_base, pin * 4, &val); + + seq_printf(s, " 0x%08x", val); +} + +static const struct pinconf_ops k230_pinconf_ops = { + .is_generic = true, + .pin_config_get = k230_pinconf_get, + .pin_config_set = k230_pinconf_set, + .pin_config_dbg_show = k230_pconf_dbg_show, +}; + +static int k230_get_functions_count(struct pinctrl_dev *pctldev) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + + return info->nfunctions; +} + +static const char *k230_get_fname(struct pinctrl_dev *pctldev, + unsigned int selector) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + + return info->functions[selector].name; +} + +static int k230_get_groups(struct pinctrl_dev *pctldev, unsigned int selector, + const char * const **groups, unsigned int *num_groups) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + + *groups = info->functions[selector].groups; + *num_groups = info->functions[selector].ngroups; + + return 0; +} + +static int k230_set_mux(struct pinctrl_dev *pctldev, unsigned int selector, + unsigned int group) +{ + struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + const struct k230_pin_conf *data = info->groups[group].data; + struct k230_pin_group *grp = &info->groups[group]; + const unsigned int *pins = grp->pins; + struct regmap *regmap; + unsigned int value, mask; + int cnt, reg; + + regmap = info->regmap_base; + + for (cnt = 0; cnt < grp->num_pins; cnt++) { + reg = pins[cnt] * 4; + value = data[cnt].func << K230_SHIFT_SEL; + mask = K230_PC_SEL; + regmap_update_bits(regmap, reg, mask, value); + k230_pins[pins[cnt]].drv_data = grp; + } + + return 0; +} + +static const struct pinmux_ops k230_pmxops = { + .get_functions_count = k230_get_functions_count, + .get_function_name = k230_get_fname, + .get_function_groups = k230_get_groups, + .set_mux = k230_set_mux, + .strict = true, +}; + +static int k230_pinctrl_parse_groups(struct device_node *np, + struct k230_pin_group *grp, + struct k230_pinctrl *info, + unsigned int index) +{ + struct device *dev = info->pctl_dev->dev; + const __be32 *list; + int size, i, ret; + + grp->name = np->name; + + list = of_get_property(np, "pinmux", &size); + size /= sizeof(*list); + + grp->num_pins = size; + grp->pins = devm_kcalloc(dev, grp->num_pins, sizeof(*grp->pins), + GFP_KERNEL); + grp->data = devm_kcalloc(dev, grp->num_pins, sizeof(*grp->data), + GFP_KERNEL); + if (!grp->pins || !grp->data) + return -ENOMEM; + + for (i = 0; i < size; i++) { + unsigned int mux_data = be32_to_cpu(*list++); + + grp->pins[i] = (mux_data >> 8); + grp->data[i].func = (mux_data & 0xff); + + ret = pinconf_generic_parse_dt_config(np, NULL, + &grp->data[i].configs, + &grp->data[i].nconfigs); + if (ret) + return ret; + } + + return 0; +} + +static int k230_pinctrl_parse_functions(struct device_node *np, + struct k230_pinctrl *info, + unsigned int index) +{ + struct device *dev = info->pctl_dev->dev; + struct k230_pmx_func *func; + struct k230_pin_group *grp; + static unsigned int idx, i; + int ret; + + func = &info->functions[index]; + + func->name = np->name; + func->ngroups = of_get_child_count(np); + if (func->ngroups <= 0) + return 0; + + func->groups = devm_kcalloc(dev, func->ngroups, + sizeof(*func->groups), GFP_KERNEL); + func->group_idx = devm_kcalloc(dev, func->ngroups, + sizeof(*func->group_idx), GFP_KERNEL); + if (!func->groups || !func->group_idx) + return -ENOMEM; + + i = 0; + + for_each_child_of_node_scoped(np, child) { + func->groups[i] = child->name; + func->group_idx[i] = idx; + grp = &info->groups[idx]; + idx++; + ret = k230_pinctrl_parse_groups(child, grp, info, i++); + if (ret) + return ret; + } + + return 0; +} + +static void k230_pinctrl_child_count(struct k230_pinctrl *info, + struct device_node *np) +{ + for_each_child_of_node_scoped(np, child) { + info->nfunctions++; + info->ngroups += of_get_child_count(child); + } +} + +static int k230_pinctrl_parse_dt(struct platform_device *pdev, + struct k230_pinctrl *info) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + unsigned int i; + int ret; + + k230_pinctrl_child_count(info, np); + + info->functions = devm_kcalloc(dev, info->nfunctions, + sizeof(*info->functions), GFP_KERNEL); + info->groups = devm_kcalloc(dev, info->ngroups, + sizeof(*info->groups), GFP_KERNEL); + if (!info->functions || !info->groups) + return -ENOMEM; + + i = 0; + + for_each_child_of_node_scoped(np, child) { + ret = k230_pinctrl_parse_functions(child, info, i++); + if (ret) { + dev_err(dev, "failed to parse function\n"); + return ret; + } + } + + return 0; +} + +static int k230_pinctrl_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct k230_pinctrl *info; + struct pinctrl_desc *pctl; + + info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + pctl = &info->pctl; + + pctl->name = "k230-pinctrl"; + pctl->owner = THIS_MODULE; + pctl->pins = k230_pins; + pctl->npins = ARRAY_SIZE(k230_pins); + pctl->pctlops = &k230_pctrl_ops; + pctl->pmxops = &k230_pmxops; + pctl->confops = &k230_pinconf_ops; + + info->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(info->base)) + return PTR_ERR(info->base); + + info->regmap_base = devm_regmap_init_mmio(dev, info->base, + &k230_regmap_config); + if (IS_ERR(info->regmap_base)) + return dev_err_probe(dev, PTR_ERR(info->regmap_base), + "failed to init regmap\n"); + + info->pctl_dev = devm_pinctrl_register(dev, pctl, info); + if (IS_ERR(info->pctl_dev)) + return dev_err_probe(dev, PTR_ERR(info->pctl_dev), + "devm_pinctrl_register failed\n"); + + k230_pinctrl_parse_dt(pdev, info); + + return 0; +} + +static const struct of_device_id k230_dt_ids[] = { + { .compatible = "canaan,k230-pinctrl", }, + { /* sintenel */ } +}; +MODULE_DEVICE_TABLE(of, k230_dt_ids); + +static struct platform_driver k230_pinctrl_driver = { + .probe = k230_pinctrl_probe, + .driver = { + .name = "k230-pinctrl", + .of_match_table = k230_dt_ids, + }, +}; +module_platform_driver(k230_pinctrl_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Ze Huang <18771902331@163.com>"); +MODULE_DESCRIPTION("Canaan K230 pinctrl driver"); From patchwork Thu Sep 26 15:57:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ze Huang <18771902331@163.com> X-Patchwork-Id: 1989885 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Thu, 26 Sep 2024 23:58:00 +0800 (CST) From: Ze Huang <18771902331@163.com> Date: Thu, 26 Sep 2024 23:57:45 +0800 Subject: [PATCH v2 3/3] riscv: dts: canaan: Add k230's pinctrl node Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240926-k230-pinctrl-v2-3-a9a36fba4b34@163.com> References: <20240926-k230-pinctrl-v2-0-a9a36fba4b34@163.com> In-Reply-To: <20240926-k230-pinctrl-v2-0-a9a36fba4b34@163.com> To: Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Conor Dooley Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Ze Huang <18771902331@163.com> X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1727366277; l=8878; i=18771902331@163.com; s=20240926; h=from:subject:message-id; bh=RJAlOij6i+RBsWNxwEJC6WQJ/+F/1w/EzLWl2qrNLKE=; b=iny35ryg6El26y7ZeuEI99xZY7YdrtzbWTm3lTCUKcGEs/KOxVFKU2xjbw0rq3y/GCnlvF0e+ OqZ+N/ihz9UCXSDfxlv18TJugpRB1eFPr1csa4ikCrEkj14KFhronrm X-Developer-Key: i=18771902331@163.com; a=ed25519; pk=M4cXLTlQ3syp0aIw4PNbFtajcroq/y7WBxK2F/jsUWI= X-CM-TRANSID: sigvCgBHA3OFhPVmTIX3AA--.42449S5 X-Coremail-Antispam: 1Uf129KBjvJXoW3GF4DKrW8Gr1xtr45WFWxJFb_yoW3trW7pF WSkFn3K3409FWrK3y0qw1jgF1UWr4q9r1rG3srKry7tw10gFs5K3s5Gr1YqFn8ur1Yk34j g3ykZa1Ivrs7Jw7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0zMxR6-UUUUU= X-CM-SenderInfo: zpryllqrzqjjitr6il2tof0z/1tbiNw5momb1gfgWrAABss Add pinctrl device, containing default config for uart, pwm, iis, iic and mmc. Signed-off-by: Ze Huang <18771902331@163.com> --- arch/riscv/boot/dts/canaan/k230-canmv.dts | 304 ++++++++++++++++++++++++++++++ arch/riscv/boot/dts/canaan/k230-pinctrl.h | 18 ++ arch/riscv/boot/dts/canaan/k230.dtsi | 6 + 3 files changed, 328 insertions(+) diff --git a/arch/riscv/boot/dts/canaan/k230-canmv.dts b/arch/riscv/boot/dts/canaan/k230-canmv.dts index 9565915cead6ad2381ea8249b616e79575feb896..fc1429a31945b232e4bfcb735dbdb43dd655eb90 100644 --- a/arch/riscv/boot/dts/canaan/k230-canmv.dts +++ b/arch/riscv/boot/dts/canaan/k230-canmv.dts @@ -22,3 +22,307 @@ ddr: memory@0 { &uart0 { status = "okay"; }; + +&pinctrl { + jtag_pins: jtag-pins { + jtag-tck-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <4>; + power-source = ; + input-enable; + bias-pull-down; + input-schmitt-enable; + }; + + jtag-tdi-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <4>; + power-source = ; + input-enable; + bias-disable; + }; + + jtag-tdo-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <4>; + power-source = ; + output-enable; + bias-disable; + }; + + jtag-tms-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <4>; + power-source = ; + input-enable; + bias-pull-up; + }; + }; + + uart2_pins: uart2-pins { + uart2-pins-cfg { + pinmux = , /* uart2 txd */ + ; /* uart2 rxd */ + slew-rate = <0>; + drive-strength = <4>; + power-source = ; + input-enable; + output-enable; + bias-disable; + }; + }; + + pwm2_pins: pwm2-pins { + pwm2-pin-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + output-enable; + bias-disable; + input-schmitt-enable; + }; + }; + + pwm3_pins: pwm3-pins { + pwm3-pin-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + output-enable; + bias-disable; + input-schmitt-enable; + }; + }; + + pwm4_pins: pwm4-pins { + pwm4-pin-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + output-enable; + bias-disable; + input-schmitt-enable; + }; + }; + + iis_pins: iis-pins { + iis-clk-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <4>; + power-source = ; + output-enable; + bias-disable; + }; + + iis-ws-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <4>; + power-source = ; + output-enable; + bias-disable; + }; + + iis-din0-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <4>; + power-source = ; + input-enable; + bias-disable; + }; + + iis-dout0-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <4>; + power-source = ; + output-enable; + bias-disable; + }; + }; + + uart4_pins: uart4-pins { + uart4-txd-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + output-enable; + bias-disable; + input-schmitt-enable; + }; + + uart4-rxd-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + bias-disable; + input-schmitt-enable; + }; + }; + + uart0_pins: uart0-pins { + uart0-txd-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + output-enable; + bias-disable; + input-schmitt-enable; + }; + + uart0-rxd-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + bias-disable; + input-schmitt-enable; + }; + }; + + iic1_pins: iic1-pins { + iic1-pins-cfg { + pinmux = , /* iic1 scl */ + ; /* iic1 sda */ + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + output-enable; + bias-pull-up; + input-schmitt-enable; + }; + }; + + iic3_pins: iic3-pins { + iic3-pins-cfg { + pinmux = , /* iic3 scl */ + ; /* iic3 sda */ + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + output-enable; + bias-pull-up; + input-schmitt-enable; + }; + }; + + iic4_pins: iic4-pins { + iic4-pins-cfg { + pinmux = , /* iic4 scl */ + ; /* iic4 sda */ + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + output-enable; + bias-pull-up; + input-schmitt-enable; + }; + }; + + iic0_pins: iic0-pins { + iic0-pins-cfg { + pinmux = , /* iic0 scl */ + ; /* iic0 sda */ + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + output-enable; + bias-pull-up; + input-schmitt-enable; + }; + }; + + uart3_pins: uart3-pins { + uart3-txd-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + output-enable; + bias-disable; + input-schmitt-enable; + }; + + uart3-rxd-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + bias-disable; + input-schmitt-enable; + }; + }; + + key_pins: key-pins { + key-pins-cfg { + pinmux = , /* key0 */ + ; /* key1 */ + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + output-enable; + bias-disable; + input-schmitt-enable; + }; + }; + + mmc1_pins: mmc1-pins { + mmc1-cmd-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + output-enable; + bias-pull-up; + input-schmitt-enable; + }; + + mmc1-clk-cfg { + pinmux = ; + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + output-enable; + bias-disable; + input-schmitt-enable; + }; + + mmc1-data-cfg { + pinmux = , /* mmc1 data0 */ + , /* mmc1 data1 */ + , /* mmc1 data2 */ + ; /* mmc1 data3 */ + slew-rate = <0>; + drive-strength = <7>; + power-source = ; + input-enable; + output-enable; + bias-pull-up; + input-schmitt-enable; + }; + }; +}; diff --git a/arch/riscv/boot/dts/canaan/k230-pinctrl.h b/arch/riscv/boot/dts/canaan/k230-pinctrl.h new file mode 100644 index 0000000000000000000000000000000000000000..63dd999ca55b64ac5aea4026465f38f9fb7ee9ea --- /dev/null +++ b/arch/riscv/boot/dts/canaan/k230-pinctrl.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */ +/* + * Copyright (C) 2024 Canaan Bright Sight Co. Ltd + * Copyright (C) 2024 Ze Huang <18771902331@163.com> + */ + +#ifndef _K230_PINCTRL_H +#define _K230_PINCTRL_H + +#define K230_MSC_3V3 0 +#define K230_MSC_1V8 1 + +#define BANK_VOLTAGE_DEFAULT K230_MSC_1V8 +#define BANK_VOLTAGE_IO50_IO61 K230_MSC_3V3 + +#define K230_PINMUX(pin, mode) (((pin) << 8) | (mode)) + +#endif /* _K230_PINCTRL_H */ diff --git a/arch/riscv/boot/dts/canaan/k230.dtsi b/arch/riscv/boot/dts/canaan/k230.dtsi index 95c1a3d8fb1192e30113d96d3e96329545bc6ae7..f7648d8c86ec16a8b0d3660067413d5ebd143dc7 100644 --- a/arch/riscv/boot/dts/canaan/k230.dtsi +++ b/arch/riscv/boot/dts/canaan/k230.dtsi @@ -4,6 +4,7 @@ */ #include +#include "k230-pinctrl.h" /dts-v1/; / { @@ -89,6 +90,11 @@ clint: timer@f04000000 { interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>; }; + pinctrl: pinctrl@91105000 { + compatible = "canaan,k230-pinctrl"; + reg = <0x0 0x91105000 0x0 0x100>; + }; + uart0: serial@91400000 { compatible = "snps,dw-apb-uart"; reg = <0x0 0x91400000 0x0 0x1000>;