From patchwork Thu Feb 27 12:24:37 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Madieu X-Patchwork-Id: 13994406 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A3E2EC021BE for ; Thu, 27 Feb 2025 13:06:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=IrD7GBOzqW9WU3XTP9ZZgsJAZqeBAi+Msgiw66lItko=; b=vkiw/3IklJuNKClmu9vckOfAJg Uq8oLvNqx3FaYyv6lVIfPyPTEv49FEAVhiSFLijwOe3NbMLnYLVi1PfFFtCedX6BnWW2TgDd4fxyW lZh7GKgt7gNPT4ug4vP7x3KoRiIGvBrD6U2CpONtsoz24JLVUu2wsRiYSa+1uCfaDjJXXtOXHUHpX QuEzYW9b1df+5Kd9VEIiSkjBZx2IwzgcnxT8BDwzHjn2Q5iGUgDJ93Uq4p7OoKP0YfktuG5viVLsq GTefX5eB9zl0DKU1BhJVcjYC5ZLQ3lgh/q6DPBsFoXZ0bXD9/Kj9dcYurNBveWazcgguhzppAXh/q wO6CvZlA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tndb6-00000007So0-04oQ; Thu, 27 Feb 2025 13:06:40 +0000 Received: from relmlor2.renesas.com ([210.160.252.172] helo=relmlie6.idc.renesas.com) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tncwy-00000007MGb-05Uc for linux-arm-kernel@lists.infradead.org; Thu, 27 Feb 2025 12:25:13 +0000 X-CSE-ConnectionGUID: 6n3xD1DiRSGiv6G3lyz8ew== X-CSE-MsgGUID: kSE6gihrQMii3IjmdNxz7A== Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 27 Feb 2025 21:25:11 +0900 Received: from ubuntu.adwin.renesas.com (unknown [10.226.92.68]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 89F3C40029C3; Thu, 27 Feb 2025 21:25:04 +0900 (JST) From: John Madieu To: john.madieu.xa@bp.renesas.com, geert+renesas@glider.be, magnus.damm@gmail.com, mturquette@baylibre.com, sboyd@kernel.org, rafael@kernel.org, daniel.lezcano@linaro.org, rui.zhang@intel.com, lukasz.luba@arm.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, p.zabel@pengutronix.de, catalin.marinas@arm.com, will@kernel.org Cc: john.madieu@gmail.com, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, biju.das.jz@bp.renesas.com Subject: [PATCH v2 1/7] soc: renesas: rz-sysc: add syscon/regmap support Date: Thu, 27 Feb 2025 13:24:37 +0100 Message-ID: <20250227122453.30480-2-john.madieu.xa@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> References: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250227_042512_171894_0FE96B46 X-CRM114-Status: GOOD ( 18.25 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The RZ/G3E system controller has various registers that control or report some properties specific to individual IPs. The regmap is registered as a syscon device to allow these IP drivers to access the registers through the regmap API. As other RZ SoCs might have custom read/write callbacks or max-offsets, let's register a custom regmap configuration. Signed-off-by: John Madieu --- v1 -> v2: no changes drivers/soc/renesas/Kconfig | 1 + drivers/soc/renesas/r9a09g047-sys.c | 1 + drivers/soc/renesas/rz-sysc.c | 30 ++++++++++++++++++++++++++++- drivers/soc/renesas/rz-sysc.h | 2 ++ 4 files changed, 33 insertions(+), 1 deletion(-) diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig index 49648cf28bd2..3ffd3a4ca18d 100644 --- a/drivers/soc/renesas/Kconfig +++ b/drivers/soc/renesas/Kconfig @@ -388,6 +388,7 @@ config RST_RCAR config SYSC_RZ bool "System controller for RZ SoCs" if COMPILE_TEST + select MFD_SYSCON config SYSC_R9A08G045 bool "Renesas RZ/G3S System controller support" if COMPILE_TEST diff --git a/drivers/soc/renesas/r9a09g047-sys.c b/drivers/soc/renesas/r9a09g047-sys.c index cd2eb7782cfe..5b010a519fab 100644 --- a/drivers/soc/renesas/r9a09g047-sys.c +++ b/drivers/soc/renesas/r9a09g047-sys.c @@ -64,4 +64,5 @@ static const struct rz_sysc_soc_id_init_data rzg3e_sys_soc_id_init_data __initco const struct rz_sysc_init_data rzg3e_sys_init_data = { .soc_id_init_data = &rzg3e_sys_soc_id_init_data, + .max_register_offset = 0x170c, }; diff --git a/drivers/soc/renesas/rz-sysc.c b/drivers/soc/renesas/rz-sysc.c index 1c98da37b7d1..bcbc23da954b 100644 --- a/drivers/soc/renesas/rz-sysc.c +++ b/drivers/soc/renesas/rz-sysc.c @@ -6,8 +6,10 @@ */ #include +#include #include #include +#include #include #include "rz-sysc.h" @@ -81,6 +83,14 @@ static int rz_sysc_soc_init(struct rz_sysc *sysc, const struct of_device_id *mat return 0; } +static struct regmap_config rz_sysc_regmap = { + .name = "rz_sysc_regs", + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .fast_io = true, +}; + static const struct of_device_id rz_sysc_match[] = { #ifdef CONFIG_SYSC_R9A08G045 { .compatible = "renesas,r9a08g045-sysc", .data = &rzg3s_sysc_init_data }, @@ -97,14 +107,21 @@ MODULE_DEVICE_TABLE(of, rz_sysc_match); static int rz_sysc_probe(struct platform_device *pdev) { + const struct rz_sysc_init_data *data; const struct of_device_id *match; struct device *dev = &pdev->dev; + struct regmap *regmap; struct rz_sysc *sysc; + int ret; match = of_match_node(rz_sysc_match, dev->of_node); if (!match) return -ENODEV; + data = match->data; + if (!data) + return -EINVAL; + sysc = devm_kzalloc(dev, sizeof(*sysc), GFP_KERNEL); if (!sysc) return -ENOMEM; @@ -114,7 +131,18 @@ static int rz_sysc_probe(struct platform_device *pdev) return PTR_ERR(sysc->base); sysc->dev = dev; - return rz_sysc_soc_init(sysc, match); + ret = rz_sysc_soc_init(sysc, match); + + if (data->max_register_offset) { + rz_sysc_regmap.max_register = data->max_register_offset; + regmap = devm_regmap_init_mmio(dev, sysc->base, &rz_sysc_regmap); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + ret = of_syscon_register_regmap(dev->of_node, regmap); + } + + return ret; } static struct platform_driver rz_sysc_driver = { diff --git a/drivers/soc/renesas/rz-sysc.h b/drivers/soc/renesas/rz-sysc.h index aa83948c5117..37a3bb2c87f8 100644 --- a/drivers/soc/renesas/rz-sysc.h +++ b/drivers/soc/renesas/rz-sysc.h @@ -34,9 +34,11 @@ struct rz_sysc_soc_id_init_data { /** * struct rz_sysc_init_data - RZ SYSC initialization data * @soc_id_init_data: RZ SYSC SoC ID initialization data + * @max_register_offset: Maximum SYSC register offset to be used by the regmap config */ struct rz_sysc_init_data { const struct rz_sysc_soc_id_init_data *soc_id_init_data; + u32 max_register_offset; }; extern const struct rz_sysc_init_data rzg3e_sys_init_data; From patchwork Thu Feb 27 12:24:38 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Madieu X-Patchwork-Id: 13994407 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A3A5BC021BE for ; Thu, 27 Feb 2025 13:08:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; 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27 Feb 2025 21:25:19 +0900 Received: from ubuntu.adwin.renesas.com (unknown [10.226.92.68]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 3A9964004CF4; Thu, 27 Feb 2025 21:25:11 +0900 (JST) From: John Madieu To: john.madieu.xa@bp.renesas.com, geert+renesas@glider.be, magnus.damm@gmail.com, mturquette@baylibre.com, sboyd@kernel.org, rafael@kernel.org, daniel.lezcano@linaro.org, rui.zhang@intel.com, lukasz.luba@arm.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, p.zabel@pengutronix.de, catalin.marinas@arm.com, will@kernel.org Cc: john.madieu@gmail.com, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, biju.das.jz@bp.renesas.com Subject: [PATCH v2 2/7] clk: renesas: r9a09g047: Add clock and reset signals for the TSU IP Date: Thu, 27 Feb 2025 13:24:38 +0100 Message-ID: <20250227122453.30480-3-john.madieu.xa@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> References: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250227_042521_480010_C36F59D4 X-CRM114-Status: UNSURE ( 7.88 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add required clocks and resets signals for the TSU IP available on the Renesas RZ/G3E SoC Signed-off-by: John Madieu Reviewed-by: Geert Uytterhoeven --- v1 -> v2: no changes drivers/clk/renesas/r9a09g047-cpg.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clk/renesas/r9a09g047-cpg.c b/drivers/clk/renesas/r9a09g047-cpg.c index 51fd24c20ed5..ada57964c132 100644 --- a/drivers/clk/renesas/r9a09g047-cpg.c +++ b/drivers/clk/renesas/r9a09g047-cpg.c @@ -154,6 +154,8 @@ static const struct rzv2h_mod_clk r9a09g047_mod_clks[] __initconst = { BUS_MSTOP(8, BIT(4))), DEF_MOD("sdhi_2_aclk", CLK_PLLDTY_ACPU_DIV4, 10, 14, 5, 14, BUS_MSTOP(8, BIT(4))), + DEF_MOD("tsu_1_pclk", CLK_QEXTAL, 16, 10, 8, 10, + BUS_MSTOP(2, BIT(15))), }; static const struct rzv2h_reset r9a09g047_resets[] __initconst = { @@ -177,6 +179,7 @@ static const struct rzv2h_reset r9a09g047_resets[] __initconst = { DEF_RST(10, 7, 4, 24), /* SDHI_0_IXRST */ DEF_RST(10, 8, 4, 25), /* SDHI_1_IXRST */ DEF_RST(10, 9, 4, 26), /* SDHI_2_IXRST */ + DEF_RST(15, 8, 7, 9), /* TSU_1_PRESETN */ }; const struct rzv2h_cpg_info r9a09g047_cpg_info __initconst = { From patchwork Thu Feb 27 12:24:39 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Madieu X-Patchwork-Id: 13994408 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C278AC021BE for ; Thu, 27 Feb 2025 13:10:00 +0000 (UTC) DKIM-Signature: v=1; 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Thu, 27 Feb 2025 12:25:28 +0000 X-CSE-ConnectionGUID: RG252z/3SoibSevHGW7hiw== X-CSE-MsgGUID: VrzK82oZROymALWu3JMMtg== Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 27 Feb 2025 21:25:27 +0900 Received: from ubuntu.adwin.renesas.com (unknown [10.226.92.68]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id CF66C4004CF4; Thu, 27 Feb 2025 21:25:19 +0900 (JST) From: John Madieu To: john.madieu.xa@bp.renesas.com, geert+renesas@glider.be, magnus.damm@gmail.com, mturquette@baylibre.com, sboyd@kernel.org, rafael@kernel.org, daniel.lezcano@linaro.org, rui.zhang@intel.com, lukasz.luba@arm.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, p.zabel@pengutronix.de, catalin.marinas@arm.com, will@kernel.org Cc: john.madieu@gmail.com, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, biju.das.jz@bp.renesas.com Subject: [PATCH v2 3/7] dt-bindings: thermal: r9a09g047-tsu: Document the TSU unit Date: Thu, 27 Feb 2025 13:24:39 +0100 Message-ID: <20250227122453.30480-4-john.madieu.xa@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> References: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250227_042527_663021_A3C3F2D3 X-CRM114-Status: GOOD ( 13.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The Renesas RZ/G3E SoC includes a Thermal Sensor Unit (TSU) block designed to measure the junction temperature. The device provides real-time temperature measurements for thermal management, utilizing a single dedicated channel (channel 1) for temperature sensing. Signed-off-by: John Madieu --- v1 -> v2: * Fix reg property specifier to get rid of yamlint warnings * Fix IRQ name to reflect TSU expectations .../thermal/renesas,r9a09g047-tsu.yaml | 123 ++++++++++++++++++ 1 file changed, 123 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml diff --git a/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml b/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml new file mode 100644 index 000000000000..e786561ddbe3 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml @@ -0,0 +1,123 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/thermal/renesas,r9a09g047-tsu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/G3E Temperature Sensor Unit (TSU) + +maintainers: + - John Madieu + +description: + The Temperature Sensor Unit (TSU) is an integrated thermal sensor that + monitors the chip temperature on the Renesas RZ/G3E SoC. The TSU provides + real-time temperature measurements for thermal management. + +properties: + compatible: + const: renesas,r9a09g047-tsu + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + + power-domains: + maxItems: 1 + + interrupts: + description: | + Interrupt specifiers for the TSU: + - S12TSUADI1: Conversion complete interrupt signal (pulse) + - S12TSUADCMPI1: Comparison result interrupt signal (level) + + interrupt-names: + items: + - const: adi + - const: adcmpi + + "#thermal-sensor-cells": + const: 0 + + renesas,tsu-calibration-sys: + $ref: /schemas/types.yaml#/definitions/phandle + description: | + Phandle to the system controller (sys) that contains the TSU + calibration values used for temperature calculations. + + renesas,tsu-operating-mode: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + description: | + TSU operating mode: + 0: Mode 0 - Conversion started by software + 1: Mode 1 - Conversion started by ELC trigger + +required: + - compatible + - reg + - clocks + - resets + - power-domains + - interrupts + - interrupt-names + - "#thermal-sensor-cells" + - renesas,tsu-operating-mode + - renesas,tsu-calibration-sys + +additionalProperties: false + +examples: + - | + #include + #include + + tsu: thermal@14002000 { + compatible = "renesas,r9a09g047-tsu"; + reg = <0x14002000 0x1000>; + clocks = <&cpg CPG_MOD 0x10a>; + resets = <&cpg 0xf8>; + power-domains = <&cpg>; + interrupts = , + ; + interrupt-names = "adi", "adcmpi"; + #thermal-sensor-cells = <0>; + renesas,tsu-operating-mode = <0>; + renesas,tsu-calibration-sys = <&sys>; + }; + + thermal-zones { + cpu-thermal { + polling-delay = <1000>; + polling-delay-passive = <250>; + thermal-sensors = <&tsu>; + + cooling-maps { + map0 { + trip = <&target>; + cooling-device = <&cpu0 0 3>, <&cpu1 0 3>, + <&cpu2 0 3>, <&cpu3 0 3>; + contribution = <1024>; + }; + }; + + trips { + target: trip-point { + temperature = <95000>; + hysteresis = <1000>; + type = "passive"; + }; + + sensor_crit: sensor-crit { + temperature = <120000>; + hysteresis = <1000>; + type = "critical"; + }; + }; + }; + }; From patchwork Thu Feb 27 12:24:40 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: John Madieu X-Patchwork-Id: 13994419 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2E068C021BE for ; 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Thu, 27 Feb 2025 13:11:19 +0000 Received: from relmlor1.renesas.com ([210.160.252.171] helo=relmlie5.idc.renesas.com) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tncxL-00000007MOg-2PQL for linux-arm-kernel@lists.infradead.org; Thu, 27 Feb 2025 12:25:37 +0000 X-CSE-ConnectionGUID: kUb7JRGVRxaAUAiRPZRH8w== X-CSE-MsgGUID: hS6O68lfQWOks/7fW4f5Ow== Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 27 Feb 2025 21:25:34 +0900 Received: from ubuntu.adwin.renesas.com (unknown [10.226.92.68]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id AD58F4007D01; Thu, 27 Feb 2025 21:25:27 +0900 (JST) From: John Madieu To: john.madieu.xa@bp.renesas.com, geert+renesas@glider.be, magnus.damm@gmail.com, mturquette@baylibre.com, sboyd@kernel.org, rafael@kernel.org, daniel.lezcano@linaro.org, rui.zhang@intel.com, lukasz.luba@arm.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, p.zabel@pengutronix.de, catalin.marinas@arm.com, will@kernel.org Cc: john.madieu@gmail.com, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, biju.das.jz@bp.renesas.com Subject: [PATCH v2 4/7] thermal: renesas: rzg3e: Add thermal driver for the Renesas RZ/G3E SoC Date: Thu, 27 Feb 2025 13:24:40 +0100 Message-ID: <20250227122453.30480-5-john.madieu.xa@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> References: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250227_042536_000217_C3295186 X-CRM114-Status: GOOD ( 26.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The RZ/G3E SoC integrates a Temperature Sensor Unit (TSU) block designed to monitor the chip's junction temperature. This sensor is connected to channel 1 of the APB port clock/reset and provides temperature measurements. It also requires calibration values stored in the system controller registers for accurate temperature measurement. Add a driver for the Renesas RZ/G3E TSU. Signed-off-by: John Madieu --- v1 -> v2: fix IRQ names MAINTAINERS | 7 + drivers/thermal/renesas/Kconfig | 7 + drivers/thermal/renesas/Makefile | 1 + drivers/thermal/renesas/rzg3e_thermal.c | 445 ++++++++++++++++++++++++ 4 files changed, 460 insertions(+) create mode 100644 drivers/thermal/renesas/rzg3e_thermal.c diff --git a/MAINTAINERS b/MAINTAINERS index b9f7d2115b57..ba7c95146f01 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -20289,6 +20289,13 @@ S: Maintained F: Documentation/devicetree/bindings/iio/potentiometer/renesas,x9250.yaml F: drivers/iio/potentiometer/x9250.c +RENESAS RZ/G3E THERMAL SENSOR UNIT DRIVER +M: John Madieu +L: linux-pm@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml +F: drivers/thermal/renesas/rzg3e_thermal.c + RESET CONTROLLER FRAMEWORK M: Philipp Zabel S: Maintained diff --git a/drivers/thermal/renesas/Kconfig b/drivers/thermal/renesas/Kconfig index dcf5fc5ae08e..10cf90fc4bfa 100644 --- a/drivers/thermal/renesas/Kconfig +++ b/drivers/thermal/renesas/Kconfig @@ -26,3 +26,10 @@ config RZG2L_THERMAL help Enable this to plug the RZ/G2L thermal sensor driver into the Linux thermal framework. + +config RZG3E_THERMAL + tristate "Renesas RZ/G3E thermal driver" + depends on ARCH_RENESAS || COMPILE_TEST + help + Enable this to plug the RZ/G3E thermal sensor driver into the Linux + thermal framework. diff --git a/drivers/thermal/renesas/Makefile b/drivers/thermal/renesas/Makefile index bf9cb3cb94d6..5a3eba0dedd0 100644 --- a/drivers/thermal/renesas/Makefile +++ b/drivers/thermal/renesas/Makefile @@ -3,3 +3,4 @@ obj-$(CONFIG_RCAR_GEN3_THERMAL) += rcar_gen3_thermal.o obj-$(CONFIG_RCAR_THERMAL) += rcar_thermal.o obj-$(CONFIG_RZG2L_THERMAL) += rzg2l_thermal.o +obj-$(CONFIG_RZG3E_THERMAL) += rzg3e_thermal.o diff --git a/drivers/thermal/renesas/rzg3e_thermal.c b/drivers/thermal/renesas/rzg3e_thermal.c new file mode 100644 index 000000000000..be9e1d118a67 --- /dev/null +++ b/drivers/thermal/renesas/rzg3e_thermal.c @@ -0,0 +1,445 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Renesas RZ/G3E TSU Temperature Sensor Unit + * + * Copyright (C) 2025 Renesas Electronics Corporation + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../thermal_hwmon.h" + +/* SYS Trimming register offsets macro */ +#define SYS_TSU_TRMVAL(x) (0x330 + (x) * 4) + +/* TSU Register offsets and bits */ +#define TSU_SSUSR 0x00 +#define TSU_SSUSR_EN_TS BIT(0) +#define TSU_SSUSR_ADC_PD_TS BIT(1) +#define TSU_SSUSR_SOC_TS_EN BIT(2) + +#define TSU_STRGR 0x04 +#define TSU_STRGR_ADST BIT(0) + +#define TSU_SOSR1 0x08 +#define TSU_SOSR1_ADCT_8 0x03 +#define TSU_SOSR1_OUTSEL_AVERAGE BIT(9) + +/* Sensor Code Read Register */ +#define TSU_SCRR 0x10 +#define TSU_SCRR_OUT12BIT_TS GENMASK(11, 0) + +/* Sensor Status Register */ +#define TSU_SSR 0x14 +#define TSU_SSR_CONV_RUNNING BIT(0) + +/* Compare Mode Setting Register */ +#define TSU_CMSR 0x18 +#define TSU_CMSR_CMPEN BIT(0) +#define TSU_CMSR_CMPCOND BIT(1) + +/* Lower Limit Setting Register */ +#define TSU_LLSR 0x1C +#define TSU_LLSR_LIM GENMASK(11, 0) + +/* Upper Limit Setting Register */ +#define TSU_ULSR 0x20 +#define TSU_ULSR_ULIM GENMASK(11, 0) + +/* Interrupt Status Register */ +#define TSU_SISR 0x30 +#define TSU_SISR_ADF BIT(0) +#define TSU_SISR_CMPF BIT(1) + +/* Interrupt Enable Register */ +#define TSU_SIER 0x34 +#define TSU_SIER_ADIE BIT(0) +#define TSU_SIER_CMPIE BIT(1) + +/* Interrupt Clear Register */ +#define TSU_SICR 0x38 +#define TSU_SICR_ADCLR BIT(0) +#define TSU_SICR_CMPCLR BIT(1) + +/* Temperature calculation constants */ +#define TSU_D 41 +#define TSU_E 126 +#define TSU_TRMVAL_MASK GENMASK(11, 0) + +#define TSU_POLL_DELAY_US 50 +#define TSU_TIMEOUT_US 10000 +#define TSU_MIN_CLOCK_RATE 24000000 + +/** + * struct rzg3e_thermal_priv - RZ/G3E thermal private data structure + * @base: TSU base address + * @dev: device pointer + * @syscon: regmap for calibration values + * @zone: thermal zone pointer + * @mode: current tzd mode + * @conv_complete: ADC conversion completion + * @reg_lock: protect shared register access + * @cached_temp: last computed temperature (milliCelsius) + * @trmval: trim (calibration) values + */ +struct rzg3e_thermal_priv { + void __iomem *base; + struct device *dev; + struct regmap *syscon; + struct thermal_zone_device *zone; + enum thermal_device_mode mode; + struct completion conv_complete; + spinlock_t reg_lock; + int cached_temp; + u32 trmval[2]; +}; + +static void rzg3e_thermal_hw_disable(struct rzg3e_thermal_priv *priv) +{ + /* Disable all interrupts first */ + writel(0, priv->base + TSU_SIER); + /* Clear any pending interrupts */ + writel(TSU_SICR_ADCLR | TSU_SICR_CMPCLR, priv->base + TSU_SICR); + /* Put device in power down */ + writel(TSU_SSUSR_ADC_PD_TS, priv->base + TSU_SSUSR); +} + +static void rzg3e_thermal_hw_enable(struct rzg3e_thermal_priv *priv) +{ + /* First clear any pending status */ + writel(TSU_SICR_ADCLR | TSU_SICR_CMPCLR, priv->base + TSU_SICR); + /* Disable all interrupts */ + writel(0, priv->base + TSU_SIER); + + /* Enable thermal sensor */ + writel(TSU_SSUSR_SOC_TS_EN | TSU_SSUSR_EN_TS, priv->base + TSU_SSUSR); + /* Setup for averaging mode with 8 samples */ + writel(TSU_SOSR1_OUTSEL_AVERAGE | TSU_SOSR1_ADCT_8, priv->base + TSU_SOSR1); +} + +static irqreturn_t rzg3e_thermal_cmp_irq(int irq, void *dev_id) +{ + struct rzg3e_thermal_priv *priv = dev_id; + u32 status; + + status = readl(priv->base + TSU_SISR); + if (!(status & TSU_SISR_CMPF)) + return IRQ_NONE; + + /* Clear the comparison interrupt flag */ + writel(TSU_SICR_CMPCLR, priv->base + TSU_SICR); + + return IRQ_WAKE_THREAD; +} + +static irqreturn_t rzg3e_thermal_cmp_threaded_irq(int irq, void *dev_id) +{ + struct rzg3e_thermal_priv *priv = dev_id; + + thermal_zone_device_update(priv->zone, THERMAL_EVENT_UNSPECIFIED); + return IRQ_HANDLED; +} + +static irqreturn_t rzg3e_thermal_adc_irq(int irq, void *dev_id) +{ + struct rzg3e_thermal_priv *priv = dev_id; + u32 status; + u32 result; + + /* Check if this is our interrupt */ + status = readl(priv->base + TSU_SISR); + if (!(status & TSU_SISR_ADF)) + return IRQ_NONE; + + /* Disable ADC interrupt */ + writel(0, priv->base + TSU_SIER); + /* Clear conversion complete interrupt */ + writel(TSU_SICR_ADCLR, priv->base + TSU_SICR); + + /* Read ADC conversion result */ + result = readl(priv->base + TSU_SCRR) & TSU_SCRR_OUT12BIT_TS; + + /* + * Calculate temperature using compensation formula + * Section 7.11.7.8 (Temperature Compensation Calculation) + * + * T(°C) = ((e - d) / (c -b)) * (a - b) + d + * + * a = 12 bits temperature code read from the sensor + * b = SYS trmval[0] + * c = SYS trmval[1] + * d = -41 + * e = 126 + */ + s64 temp_val = div_s64(((TSU_E + TSU_D) * (s64)(result - priv->trmval[0])), + priv->trmval[1] - priv->trmval[0]) - TSU_D; + int new_temp = temp_val * MILLIDEGREE_PER_DEGREE; + + scoped_guard(spinlock_irqsave, &priv->reg_lock) { + priv->cached_temp = new_temp; + } + + complete(&priv->conv_complete); + + return IRQ_HANDLED; +} + +static int rzg3e_thermal_get_temp(struct thermal_zone_device *zone, int *temp) +{ + struct rzg3e_thermal_priv *priv = thermal_zone_device_priv(zone); + u32 val; + int ret; + + if (priv->mode == THERMAL_DEVICE_DISABLED) + return -EBUSY; + + reinit_completion(&priv->conv_complete); + + /* Enable ADC interrupt */ + writel(TSU_SIER_ADIE, priv->base + TSU_SIER); + + /* Verify no ongoing conversion */ + ret = readl_poll_timeout_atomic(priv->base + TSU_SSR, val, + !(val & TSU_SSR_CONV_RUNNING), + TSU_POLL_DELAY_US, TSU_TIMEOUT_US); + if (ret) { + dev_err(priv->dev, "ADC conversion timed out\n"); + return ret; + } + + /* Start conversion */ + writel(TSU_STRGR_ADST, priv->base + TSU_STRGR); + + if (!wait_for_completion_timeout(&priv->conv_complete, + msecs_to_jiffies(100))) { + dev_err(priv->dev, "ADC conversion completion timeout\n"); + return -ETIMEDOUT; + } + + scoped_guard(spinlock_irqsave, &priv->reg_lock) { + *temp = priv->cached_temp; + } + + return 0; +} + +/* Convert temperature in milliCelsius to raw sensor code */ +static int rzg3e_temp_to_raw(struct rzg3e_thermal_priv *priv, int temp_mc) +{ + s64 raw = div_s64(((temp_mc / 1000) - TSU_D) * + (priv->trmval[1] - priv->trmval[0]), + (TSU_E - TSU_D)); + return clamp_val(raw, 0, 0xFFF); +} + +static int rzg3e_thermal_set_trips(struct thermal_zone_device *tz, int low, int high) +{ + struct rzg3e_thermal_priv *priv = thermal_zone_device_priv(tz); + int ret; + int val; + + if (low >= high) + return -EINVAL; + + if (priv->mode == THERMAL_DEVICE_DISABLED) + return -EBUSY; + + /* Set up comparison interrupt */ + writel(0, priv->base + TSU_SIER); + writel(TSU_SICR_ADCLR | TSU_SICR_CMPCLR, priv->base + TSU_SICR); + + /* Set thresholds */ + writel(rzg3e_temp_to_raw(priv, low), priv->base + TSU_LLSR); + writel(rzg3e_temp_to_raw(priv, high), priv->base + TSU_ULSR); + + /* Configure comparison: + * - Enable comparison function (CMPEN = 1) + * - Set comparison condition (CMPCOND = 0 for out of range) + */ + writel(TSU_CMSR_CMPEN, priv->base + TSU_CMSR); + + /* Enable comparison irq */ + writel(TSU_SIER_CMPIE, priv->base + TSU_SIER); + + /* Verify no ongoing conversion */ + ret = readl_poll_timeout_atomic(priv->base + TSU_SSR, val, + !(val & TSU_SSR_CONV_RUNNING), + TSU_POLL_DELAY_US, TSU_TIMEOUT_US); + if (ret) { + dev_err(priv->dev, "ADC conversion timed out\n"); + return ret; + } + + /* Start a conversion to trigger comparison */ + writel(TSU_STRGR_ADST, priv->base + TSU_STRGR); + + return 0; +} + +static int rzg3e_thermal_get_trimming(struct rzg3e_thermal_priv *priv) +{ + int ret; + + ret = regmap_read(priv->syscon, SYS_TSU_TRMVAL(0), &priv->trmval[0]); + if (ret) + return ret; + + ret = regmap_read(priv->syscon, SYS_TSU_TRMVAL(1), &priv->trmval[1]); + if (ret) + return ret; + + priv->trmval[0] &= TSU_TRMVAL_MASK; + priv->trmval[1] &= TSU_TRMVAL_MASK; + + if (!priv->trmval[0] || !priv->trmval[1]) + return dev_err_probe(priv->dev, -EINVAL, "invalid trimming values"); + + return 0; +} + +static int rzg3e_thermal_change_mode(struct thermal_zone_device *tz, + enum thermal_device_mode mode) +{ + struct rzg3e_thermal_priv *priv = thermal_zone_device_priv(tz); + + if (mode == THERMAL_DEVICE_DISABLED) + rzg3e_thermal_hw_disable(priv); + else + rzg3e_thermal_hw_enable(priv); + + priv->mode = mode; + return 0; +} + +static const struct thermal_zone_device_ops rzg3e_tz_ops = { + .get_temp = rzg3e_thermal_get_temp, + .set_trips = rzg3e_thermal_set_trips, + .change_mode = rzg3e_thermal_change_mode, +}; + +static int rzg3e_thermal_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct rzg3e_thermal_priv *priv; + struct reset_control *rstc; + char *adc_name, *cmp_name; + int adc_irq, cmp_irq; + struct clk *clk; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = dev; + + priv->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->base)) + return dev_err_probe(dev, PTR_ERR(priv->base), + "Failed to map I/O memory"); + + priv->syscon = syscon_regmap_lookup_by_phandle(dev->of_node, + "renesas,tsu-calibration-sys"); + if (IS_ERR(priv->syscon)) + return dev_err_probe(dev, PTR_ERR(priv->syscon), + "Failed to get calibration syscon"); + + adc_irq = platform_get_irq_byname(pdev, "adi"); + if (adc_irq < 0) + return adc_irq; + + cmp_irq = platform_get_irq_byname(pdev, "adcmpi"); + if (cmp_irq < 0) + return cmp_irq; + + rstc = devm_reset_control_get_exclusive_deasserted(dev, NULL); + if (IS_ERR(rstc)) + return dev_err_probe(dev, PTR_ERR(rstc), + "Failed to acquire deasserted reset"); + + platform_set_drvdata(pdev, priv); + + spin_lock_init(&priv->reg_lock); + init_completion(&priv->conv_complete); + + clk = devm_clk_get_enabled(dev, NULL); + if (IS_ERR(clk)) + return dev_err_probe(dev, PTR_ERR(clk), + "Failed to get and enable clock"); + + if (clk_get_rate(clk) < TSU_MIN_CLOCK_RATE) + return dev_err_probe(dev, -EINVAL, + "Clock rate too low (minimum %d Hz required)", + TSU_MIN_CLOCK_RATE); + + ret = rzg3e_thermal_get_trimming(priv); + if (ret) + return ret; + + adc_name = devm_kasprintf(dev, GFP_KERNEL, "%s-adc", dev_name(dev)); + if (!adc_name) + return -ENOMEM; + + cmp_name = devm_kasprintf(dev, GFP_KERNEL, "%s-cmp", dev_name(dev)); + if (!cmp_name) + return -ENOMEM; + + /* Unit in a known disabled mode */ + rzg3e_thermal_hw_disable(priv); + + ret = devm_request_irq(dev, adc_irq, rzg3e_thermal_adc_irq, + IRQF_TRIGGER_RISING, adc_name, priv); + if (ret) + return dev_err_probe(dev, ret, "Failed to request ADC IRQ"); + + ret = devm_request_threaded_irq(dev, cmp_irq, rzg3e_thermal_cmp_irq, + rzg3e_thermal_cmp_threaded_irq, + IRQF_TRIGGER_HIGH | IRQF_ONESHOT, + cmp_name, priv); + if (ret) + return dev_err_probe(dev, ret, "Failed to request comparison IRQ"); + + /* Register Thermal Zone */ + priv->zone = devm_thermal_of_zone_register(dev, 0, priv, &rzg3e_tz_ops); + if (IS_ERR(priv->zone)) + return dev_err_probe(dev, PTR_ERR(priv->zone), + "Failed to register thermal zone"); + + ret = devm_thermal_add_hwmon_sysfs(dev, priv->zone); + if (ret) + return dev_err_probe(dev, ret, "Failed to add hwmon sysfs"); + + return 0; +} + +static const struct of_device_id rzg3e_thermal_dt_ids[] = { + { .compatible = "renesas,r9a09g047-tsu" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, rzg3e_thermal_dt_ids); + +static struct platform_driver rzg3e_thermal_driver = { + .driver = { + .name = "rzg3e_thermal", + .of_match_table = rzg3e_thermal_dt_ids, + }, + .probe = rzg3e_thermal_probe, +}; +module_platform_driver(rzg3e_thermal_driver); + +MODULE_DESCRIPTION("Renesas RZ/G3E TSU Thermal Sensor Driver"); +MODULE_AUTHOR("John Madieu "); +MODULE_LICENSE("GPL"); From patchwork Thu Feb 27 12:24:41 2025 Content-Type: text/plain; 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Thu, 27 Feb 2025 21:25:35 +0900 (JST) From: John Madieu To: john.madieu.xa@bp.renesas.com, geert+renesas@glider.be, magnus.damm@gmail.com, mturquette@baylibre.com, sboyd@kernel.org, rafael@kernel.org, daniel.lezcano@linaro.org, rui.zhang@intel.com, lukasz.luba@arm.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, p.zabel@pengutronix.de, catalin.marinas@arm.com, will@kernel.org Cc: john.madieu@gmail.com, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, biju.das.jz@bp.renesas.com Subject: [PATCH v2 5/7] thermal: renesas: rzg3e: Add safety check when reading temperature Date: Thu, 27 Feb 2025 13:24:41 +0100 Message-ID: <20250227122453.30480-6-john.madieu.xa@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> References: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250227_042543_294305_8A5E9FE0 X-CRM114-Status: GOOD ( 16.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Becaure reading temperature may fail, add mechanism to panic in case reading the temperature fails after a given number of trials. This is due to the thermal core disabling the thermal zone device after a couple of consecutive attempt failures. Signed-off-by: John Madieu --- v1 -> v2: no changes drivers/thermal/renesas/rzg3e_thermal.c | 38 +++++++++++++++++++++++-- 1 file changed, 36 insertions(+), 2 deletions(-) diff --git a/drivers/thermal/renesas/rzg3e_thermal.c b/drivers/thermal/renesas/rzg3e_thermal.c index be9e1d118a67..ff80d1b517c8 100644 --- a/drivers/thermal/renesas/rzg3e_thermal.c +++ b/drivers/thermal/renesas/rzg3e_thermal.c @@ -83,6 +83,19 @@ #define TSU_TIMEOUT_US 10000 #define TSU_MIN_CLOCK_RATE 24000000 +/* + * Number of consecutive errors before shutdown + * + * While simulating thermal sensor failure, we have noticed that the thermal + * core tries to fetch the temperature a couple times and then disable the + * thermal zone device. In case of extreme heat, this might lead to SoC + * destruction. + * + * Let's prevent this by limitating the number of failure and panic in + * case it happens. + */ +#define MAX_TEMP_READ_ERRORS 10 + /** * struct rzg3e_thermal_priv - RZ/G3E thermal private data structure * @base: TSU base address @@ -93,6 +106,7 @@ * @conv_complete: ADC conversion completion * @reg_lock: protect shared register access * @cached_temp: last computed temperature (milliCelsius) + * @error_count: Track consecutive errors * @trmval: trim (calibration) values */ struct rzg3e_thermal_priv { @@ -104,6 +118,7 @@ struct rzg3e_thermal_priv { struct completion conv_complete; spinlock_t reg_lock; int cached_temp; + atomic_t error_count; u32 trmval[2]; }; @@ -200,6 +215,7 @@ static irqreturn_t rzg3e_thermal_adc_irq(int irq, void *dev_id) static int rzg3e_thermal_get_temp(struct thermal_zone_device *zone, int *temp) { struct rzg3e_thermal_priv *priv = thermal_zone_device_priv(zone); + int error_count; u32 val; int ret; @@ -217,7 +233,7 @@ static int rzg3e_thermal_get_temp(struct thermal_zone_device *zone, int *temp) TSU_POLL_DELAY_US, TSU_TIMEOUT_US); if (ret) { dev_err(priv->dev, "ADC conversion timed out\n"); - return ret; + goto handle_error; } /* Start conversion */ @@ -225,15 +241,33 @@ static int rzg3e_thermal_get_temp(struct thermal_zone_device *zone, int *temp) if (!wait_for_completion_timeout(&priv->conv_complete, msecs_to_jiffies(100))) { + ret = -ETIMEDOUT; dev_err(priv->dev, "ADC conversion completion timeout\n"); - return -ETIMEDOUT; + goto handle_error; } scoped_guard(spinlock_irqsave, &priv->reg_lock) { *temp = priv->cached_temp; } + /* Reset error count on successful read */ + atomic_set(&priv->error_count, 0); return 0; + +handle_error: + error_count = atomic_inc_return(&priv->error_count); + if (error_count >= MAX_TEMP_READ_ERRORS) { + dev_emerg(priv->dev, + "Failed to read temperature %d times, initiating emergency shutdown\n", + error_count); + mdelay(100); + panic("Temperature sensor failure - emergency shutdown"); + } + + dev_err(priv->dev, "Failed to read temperature (error %d), attempt %d/%d\n", + ret, error_count, MAX_TEMP_READ_ERRORS); + + return ret; } /* Convert temperature in milliCelsius to raw sensor code */ From patchwork Thu Feb 27 12:24:42 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Madieu X-Patchwork-Id: 13994421 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2355BC021BE for ; Thu, 27 Feb 2025 13:14:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; 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27 Feb 2025 21:25:50 +0900 Received: from ubuntu.adwin.renesas.com (unknown [10.226.92.68]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 019F64007D01; Thu, 27 Feb 2025 21:25:42 +0900 (JST) From: John Madieu To: john.madieu.xa@bp.renesas.com, geert+renesas@glider.be, magnus.damm@gmail.com, mturquette@baylibre.com, sboyd@kernel.org, rafael@kernel.org, daniel.lezcano@linaro.org, rui.zhang@intel.com, lukasz.luba@arm.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, p.zabel@pengutronix.de, catalin.marinas@arm.com, will@kernel.org Cc: john.madieu@gmail.com, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, biju.das.jz@bp.renesas.com Subject: [PATCH v2 6/7] arm64: dts: renesas: r9a09g047: Add TSU node Date: Thu, 27 Feb 2025 13:24:42 +0100 Message-ID: <20250227122453.30480-7-john.madieu.xa@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> References: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250227_042551_009509_DE32923C X-CRM114-Status: UNSURE ( 9.18 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add TSU node along with thermal zones and keep it enabled in the SoC DTSI. Signed-off-by: John Madieu --- v1 -> v2: Fix IRQ names arch/arm64/boot/dts/renesas/r9a09g047.dtsi | 49 ++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r9a09g047.dtsi b/arch/arm64/boot/dts/renesas/r9a09g047.dtsi index a6b83e057a40..93b57d7ad7b9 100644 --- a/arch/arm64/boot/dts/renesas/r9a09g047.dtsi +++ b/arch/arm64/boot/dts/renesas/r9a09g047.dtsi @@ -64,6 +64,7 @@ cpu0: cpu@0 { next-level-cache = <&L3_CA55>; enable-method = "psci"; clocks = <&cpg CPG_CORE R9A09G047_CA55_0_CORECLK0>; + #cooling-cells = <2>; operating-points-v2 = <&cluster0_opp>; }; @@ -74,6 +75,7 @@ cpu1: cpu@100 { next-level-cache = <&L3_CA55>; enable-method = "psci"; clocks = <&cpg CPG_CORE R9A09G047_CA55_0_CORECLK1>; + #cooling-cells = <2>; operating-points-v2 = <&cluster0_opp>; }; @@ -84,6 +86,7 @@ cpu2: cpu@200 { next-level-cache = <&L3_CA55>; enable-method = "psci"; clocks = <&cpg CPG_CORE R9A09G047_CA55_0_CORECLK2>; + #cooling-cells = <2>; operating-points-v2 = <&cluster0_opp>; }; @@ -94,6 +97,7 @@ cpu3: cpu@300 { next-level-cache = <&L3_CA55>; enable-method = "psci"; clocks = <&cpg CPG_CORE R9A09G047_CA55_0_CORECLK3>; + #cooling-cells = <2>; operating-points-v2 = <&cluster0_opp>; }; @@ -302,6 +306,20 @@ wdt3: watchdog@13000400 { status = "disabled"; }; + tsu: thermal@14002000 { + compatible = "renesas,r9a09g047-tsu"; + reg = <0 0x14002000 0 0x1000>; + interrupts = , + ; + interrupt-names = "adi", "adcmpi"; + clocks = <&cpg CPG_MOD 0x10a>; + resets = <&cpg 0xf8>; + power-domains = <&cpg>; + #thermal-sensor-cells = <0>; + renesas,tsu-operating-mode = <0>; + renesas,tsu-calibration-sys = <&sys>; + }; + i2c0: i2c@14400400 { compatible = "renesas,riic-r9a09g047", "renesas,riic-r9a09g057"; reg = <0 0x14400400 0 0x400>; @@ -502,6 +520,37 @@ gic: interrupt-controller@14900000 { }; }; + thermal-zones { + cpu-thermal { + polling-delay = <1000>; + polling-delay-passive = <250>; + thermal-sensors = <&tsu>; + + cooling-maps { + map0 { + trip = <&target>; + cooling-device = <&cpu0 0 3>, <&cpu1 0 3>, + <&cpu2 0 3>, <&cpu3 0 3>; + contribution = <1024>; + }; + }; + + trips { + target: trip-point { + temperature = <95000>; + hysteresis = <1000>; + type = "passive"; + }; + + sensor_crit: sensor-crit { + temperature = <120000>; + hysteresis = <1000>; + type = "critical"; + }; + }; + }; + }; + timer { compatible = "arm,armv8-timer"; interrupts-extended = <&gic GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>, From patchwork Thu Feb 27 12:24:43 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Madieu X-Patchwork-Id: 13994434 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E3918C19F2E for ; Thu, 27 Feb 2025 13:16:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; 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Thu, 27 Feb 2025 12:25:59 +0000 X-CSE-ConnectionGUID: SA+o/NoLQrKw8p9iPKEJsw== X-CSE-MsgGUID: WJc6qwMwS/2KVz/+mIS6vQ== Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 27 Feb 2025 21:25:57 +0900 Received: from ubuntu.adwin.renesas.com (unknown [10.226.92.68]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id A0D1B4007D01; Thu, 27 Feb 2025 21:25:50 +0900 (JST) From: John Madieu To: john.madieu.xa@bp.renesas.com, geert+renesas@glider.be, magnus.damm@gmail.com, mturquette@baylibre.com, sboyd@kernel.org, rafael@kernel.org, daniel.lezcano@linaro.org, rui.zhang@intel.com, lukasz.luba@arm.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, p.zabel@pengutronix.de, catalin.marinas@arm.com, will@kernel.org Cc: john.madieu@gmail.com, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, biju.das.jz@bp.renesas.com Subject: [PATCH v2 7/7] arm64: defconfig: Enable RZ/G3E thermal Date: Thu, 27 Feb 2025 13:24:43 +0100 Message-ID: <20250227122453.30480-8-john.madieu.xa@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> References: <20250227122453.30480-1-john.madieu.xa@bp.renesas.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250227_042558_807157_C47032B6 X-CRM114-Status: UNSURE ( 6.81 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Enable the CONFIG_RZG3E_THERMAL flag for the RZ/G3E SoC. Signed-off-by: John Madieu --- v1 -> v2: no changes arch/arm64/configs/defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index a1cc3814b09b..91136c0196b5 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -714,6 +714,7 @@ CONFIG_ROCKCHIP_THERMAL=m CONFIG_RCAR_THERMAL=y CONFIG_RCAR_GEN3_THERMAL=y CONFIG_RZG2L_THERMAL=y +CONFIG_RZG3E_THERMAL=y CONFIG_ARMADA_THERMAL=y CONFIG_MTK_THERMAL=m CONFIG_MTK_LVTS_THERMAL=m