diff options
Diffstat (limited to 'ARM-Enable-thermal-support-for-Raspberry-Pi-4.patch')
| -rw-r--r-- | ARM-Enable-thermal-support-for-Raspberry-Pi-4.patch | 903 |
1 files changed, 903 insertions, 0 deletions
diff --git a/ARM-Enable-thermal-support-for-Raspberry-Pi-4.patch b/ARM-Enable-thermal-support-for-Raspberry-Pi-4.patch new file mode 100644 index 000000000..5037e4ae4 --- /dev/null +++ b/ARM-Enable-thermal-support-for-Raspberry-Pi-4.patch @@ -0,0 +1,903 @@ +From patchwork Fri Nov 1 13:42:26 2019 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +X-Patchwork-Submitter: Stefan Wahren <wahrenst@gmx.net> +X-Patchwork-Id: 11223139 +Return-Path: + <SRS0=rCIu=YZ=lists.infradead.org=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@kernel.org> +Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org + [172.30.200.123]) + by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 25958912 + for <patchwork-linux-arm@patchwork.kernel.org>; + Fri, 1 Nov 2019 13:43:36 +0000 (UTC) +Received: from bombadil.infradead.org (bombadil.infradead.org + [198.137.202.133]) + (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 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matches SPF record + -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from + author's domain + -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature + 0.1 DKIM_SIGNED Message has a DKIM or DK signature, + not necessarily + valid + -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from + envelope-from domain +X-BeenThere: linux-arm-kernel@lists.infradead.org +X-Mailman-Version: 2.1.29 +Precedence: list +List-Id: <linux-arm-kernel.lists.infradead.org> +List-Unsubscribe: + <http://lists.infradead.org/mailman/options/linux-arm-kernel>, + <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> +List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> +List-Post: <mailto:linux-arm-kernel@lists.infradead.org> +List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> +List-Subscribe: + <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, + <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> +Cc: devicetree@vger.kernel.org, linux-pm@vger.kernel.org, + bcm-kernel-feedback-list@broadcom.com, Stefan Wahren <wahrenst@gmx.net>, + Chen-Yu Tsai <wens@kernel.org>, linux-arm-kernel@lists.infradead.org +MIME-Version: 1.0 +Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> +Errors-To: + linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org + +Since the BCM2711 doesn't have a AVS TMON block, the thermal information +must be retrieved from the AVS ring oscillator block. So add a new +suitable binding. + +Signed-off-by: Stefan Wahren <wahrenst@gmx.net> +--- + .../bindings/thermal/brcm,bcm2711-thermal.txt | 39 ++++++++++++++++++++++ + 1 file changed, 39 insertions(+) + create mode 100644 Documentation/devicetree/bindings/thermal/brcm,bcm2711-thermal.txt + +-- +2.7.4 + +diff --git a/Documentation/devicetree/bindings/thermal/brcm,bcm2711-thermal.txt b/Documentation/devicetree/bindings/thermal/brcm,bcm2711-thermal.txt +new file mode 100644 +index 0000000..5531d3f +--- /dev/null ++++ b/Documentation/devicetree/bindings/thermal/brcm,bcm2711-thermal.txt +@@ -0,0 +1,39 @@ ++Binding for Thermal Sensor driver for BCM2711 SoCs. ++ ++Required properties: ++- compatible: must be: "brcm,bcm2711-thermal" ++- reg: Address range of the thermal registers. ++- clocks: Phandle of the clock used by the thermal sensor. ++- #thermal-sensor-cells: should be 0 (see thermal.txt) ++ ++Example: ++ ++thermal-zones { ++ cpu_thermal: cpu-thermal { ++ polling-delay-passive = <0>; ++ polling-delay = <1000>; ++ ++ thermal-sensors = <&thermal>; ++ ++ trips { ++ cpu-crit { ++ temperature = <80000>; ++ hysteresis = <0>; ++ type = "critical"; ++ }; ++ }; ++ ++ coefficients = <(-487) 410040>; ++ ++ cooling-maps { ++ }; ++ }; ++}; ++ ++thermal@7d5d2200 { ++ compatible = "brcm,bcm2711-thermal"; ++ reg = <0x7d5d2200 0x4>; ++ clocks = <&clocks BCM2835_CLOCK_TSENS>; ++ #thermal-sensor-cells = <0>; ++}; ++ + +From patchwork Fri Nov 1 13:42:27 2019 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +X-Patchwork-Submitter: Stefan Wahren <wahrenst@gmx.net> +X-Patchwork-Id: 11223155 +Return-Path: + <SRS0=rCIu=YZ=lists.infradead.org=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@kernel.org> +Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org + [172.30.200.123]) + by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 21D0914E5 + for <patchwork-linux-arm@patchwork.kernel.org>; + Fri, 1 Nov 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Daniel Lezcano <daniel.lezcano@linaro.org>, + Amit Kucheria <amit.kucheria@verdurent.com>, + Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, + Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>, + Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, + Markus Mayer <mmayer@broadcom.com> +Subject: [PATCH 2/4] thermal: Add BCM2711 thermal driver +Date: Fri, 1 Nov 2019 14:42:27 +0100 +Message-Id: <1572615749-9524-3-git-send-email-wahrenst@gmx.net> +X-Mailer: git-send-email 2.7.4 +In-Reply-To: <1572615749-9524-1-git-send-email-wahrenst@gmx.net> +References: <1572615749-9524-1-git-send-email-wahrenst@gmx.net> +X-Provags-ID: V03:K1:W8Y8TrjXv7DBI+UOhPg3H+lw+29ji7fbc4oPSb9Y3kLSajZq+F9 + 6vM7vUP/2p2NtXAKA2x7TYf7cz4NIx5plmG/lt0WoIQ6YzvBQ4uI6kfZtgGRgXw9KIbGYRv + I4oY9GWGsh+DpA2G/kpO3HD8T65yvclzGp1X4l89ioeqC2FzIN0OzeYVma2iw32Wk8VhU8w + GemtnKn3nrc7/xc2FKbTQ== +X-Spam-Flag: NO +X-UI-Out-Filterresults: 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<mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> +List-Subscribe: + <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, + <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> +Cc: devicetree@vger.kernel.org, linux-pm@vger.kernel.org, + bcm-kernel-feedback-list@broadcom.com, Stefan Wahren <wahrenst@gmx.net>, + Chen-Yu Tsai <wens@kernel.org>, linux-arm-kernel@lists.infradead.org +MIME-Version: 1.0 +Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> +Errors-To: + linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org + +This adds the thermal sensor driver for the Broadcom BCM2711 SoC, +which is placed on the Raspberry Pi 4. The driver only provides +SoC temperature reading so far. + +Signed-off-by: Stefan Wahren <wahrenst@gmx.net> +--- + drivers/thermal/broadcom/Kconfig | 8 ++ + drivers/thermal/broadcom/Makefile | 1 + + drivers/thermal/broadcom/bcm2711_thermal.c | 146 +++++++++++++++++++++++++++++ + 3 files changed, 155 insertions(+) + create mode 100644 drivers/thermal/broadcom/bcm2711_thermal.c + +-- +2.7.4 + +diff --git a/drivers/thermal/broadcom/Kconfig b/drivers/thermal/broadcom/Kconfig +index cf43e15..b970295 100644 +--- a/drivers/thermal/broadcom/Kconfig ++++ b/drivers/thermal/broadcom/Kconfig +@@ -1,4 +1,12 @@ + # SPDX-License-Identifier: GPL-2.0-only ++config BCM2711_THERMAL ++ tristate "Broadcom AVS RO thermal sensor driver" ++ depends on ARCH_BCM2835 || COMPILE_TEST ++ depends on HAS_IOMEM ++ depends on THERMAL_OF ++ help ++ Support for thermal sensors on Broadcom BCM2711 SoCs. ++ + config BCM2835_THERMAL + tristate "Thermal sensors on bcm2835 SoC" + depends on ARCH_BCM2835 || COMPILE_TEST +diff --git a/drivers/thermal/broadcom/Makefile b/drivers/thermal/broadcom/Makefile +index 490ab1f..c917b24 100644 +--- a/drivers/thermal/broadcom/Makefile ++++ b/drivers/thermal/broadcom/Makefile +@@ -1,4 +1,5 @@ + # SPDX-License-Identifier: GPL-2.0-only ++obj-$(CONFIG_BCM2711_THERMAL) += bcm2711_thermal.o + obj-$(CONFIG_BCM2835_THERMAL) += bcm2835_thermal.o + obj-$(CONFIG_BRCMSTB_THERMAL) += brcmstb_thermal.o + obj-$(CONFIG_BCM_NS_THERMAL) += ns-thermal.o +diff --git a/drivers/thermal/broadcom/bcm2711_thermal.c b/drivers/thermal/broadcom/bcm2711_thermal.c +new file mode 100644 +index 0000000..214a305 +--- /dev/null ++++ b/drivers/thermal/broadcom/bcm2711_thermal.c +@@ -0,0 +1,146 @@ ++// SPDX-License-Identifier: GPL-2.0+ ++/* ++ * Broadcom AVS RO thermal sensor driver ++ * ++ * based on brcmstb_thermal ++ * ++ * Copyright (C) 2019 Stefan Wahren ++ */ ++ ++#include <linux/bitops.h> ++#include <linux/clk.h> ++#include <linux/device.h> ++#include <linux/err.h> ++#include <linux/io.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/of_device.h> ++#include <linux/thermal.h> ++ ++#include "../thermal_hwmon.h" ++ ++#define AVS_RO_TEMP_STATUS 0x00 ++ #define AVS_RO_TEMP_STATUS_valid_msk (BIT(16) | BIT(10)) ++ #define AVS_RO_TEMP_STATUS_data_msk GENMASK(9, 0) ++ ++struct bcm2711_thermal_priv { ++ void __iomem *base; ++ struct device *dev; ++ struct clk *clk; ++ struct thermal_zone_device *thermal; ++}; ++ ++static int bcm2711_get_temp(void *data, int *temp) ++{ ++ struct bcm2711_thermal_priv *priv = data; ++ int slope = thermal_zone_get_slope(priv->thermal); ++ int offset = thermal_zone_get_offset(priv->thermal); ++ u32 val; ++ long t; ++ ++ val = __raw_readl(priv->base + AVS_RO_TEMP_STATUS); ++ ++ if (!(val & AVS_RO_TEMP_STATUS_valid_msk)) { ++ dev_err(priv->dev, "reading not valid\n"); ++ return -EIO; ++ } ++ ++ val &= AVS_RO_TEMP_STATUS_data_msk; ++ ++ /* Convert a HW code to a temperature reading (millidegree celsius) */ ++ t = slope * val + offset; ++ if (t < 0) ++ *temp = 0; ++ else ++ *temp = t; ++ ++ return 0; ++} ++ ++static const struct thermal_zone_of_device_ops bcm2711_thermal_of_ops = { ++ .get_temp = bcm2711_get_temp, ++}; ++ ++static const struct of_device_id bcm2711_thermal_id_table[] = { ++ { .compatible = "brcm,bcm2711-thermal" }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, bcm2711_thermal_id_table); ++ ++static int bcm2711_thermal_probe(struct platform_device *pdev) ++{ ++ struct thermal_zone_device *thermal; ++ struct bcm2711_thermal_priv *priv; ++ struct resource *res; ++ int ret; ++ ++ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); ++ if (!priv) ++ return -ENOMEM; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ priv->base = devm_ioremap_resource(&pdev->dev, res); ++ if (IS_ERR(priv->base)) ++ return PTR_ERR(priv->base); ++ ++ priv->clk = devm_clk_get(&pdev->dev, NULL); ++ if (IS_ERR(priv->clk)) { ++ ret = PTR_ERR(priv->clk); ++ if (ret != -EPROBE_DEFER) ++ dev_err(&pdev->dev, "could not get clk: %d\n", ret); ++ return ret; ++ } ++ ++ ret = clk_prepare_enable(priv->clk); ++ if (ret) ++ return ret; ++ ++ priv->dev = &pdev->dev; ++ platform_set_drvdata(pdev, priv); ++ ++ thermal = devm_thermal_zone_of_sensor_register(&pdev->dev, 0, priv, ++ &bcm2711_thermal_of_ops); ++ if (IS_ERR(thermal)) { ++ ret = PTR_ERR(thermal); ++ dev_err(&pdev->dev, "could not register sensor: %d\n", ret); ++ goto err_clk; ++ } ++ ++ priv->thermal = thermal; ++ ++ thermal->tzp->no_hwmon = false; ++ ret = thermal_add_hwmon_sysfs(thermal); ++ if (ret) ++ return ret; ++ ++ return 0; ++ ++err_clk: ++ clk_disable_unprepare(priv->clk); ++ ++ return ret; ++} ++ ++static int bcm2711_thermal_remove(struct platform_device *pdev) ++{ ++ struct bcm2711_thermal_priv *priv = platform_get_drvdata(pdev); ++ ++ clk_disable_unprepare(priv->clk); ++ ++ return 0; ++} ++ ++static struct platform_driver bcm2711_thermal_driver = { ++ .probe = bcm2711_thermal_probe, ++ .remove = bcm2711_thermal_remove, ++ .driver = { ++ .name = "bcm2711_thermal", ++ .of_match_table = bcm2711_thermal_id_table, ++ }, ++}; ++module_platform_driver(bcm2711_thermal_driver); ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Stefan Wahren"); ++MODULE_DESCRIPTION("Broadcom AVS RO thermal sensor driver"); + +From patchwork Fri Nov 1 13:42:28 2019 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +X-Patchwork-Submitter: Stefan Wahren <wahrenst@gmx.net> +X-Patchwork-Id: 11223143 +Return-Path: + <SRS0=rCIu=YZ=lists.infradead.org=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@kernel.org> +Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org + [172.30.200.123]) + by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 015CA14E5 + for <patchwork-linux-arm@patchwork.kernel.org>; + Fri, 1 Nov 2019 13:43:48 +0000 (UTC) +Received: from bombadil.infradead.org (bombadil.infradead.org + [198.137.202.133]) 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<http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, + <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> +Cc: devicetree@vger.kernel.org, linux-pm@vger.kernel.org, + bcm-kernel-feedback-list@broadcom.com, Stefan Wahren <wahrenst@gmx.net>, + Chen-Yu Tsai <wens@kernel.org>, linux-arm-kernel@lists.infradead.org +MIME-Version: 1.0 +Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> +Errors-To: + linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org + +This enables thermal for the BCM2711 and the Raspberry Pi 4. + +Signed-off-by: Stefan Wahren <wahrenst@gmx.net> +--- + arch/arm/boot/dts/bcm2711.dtsi | 9 +++++++++ + 1 file changed, 9 insertions(+) + +-- +2.7.4 + +diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi +index ac83dac..950e43f 100644 +--- a/arch/arm/boot/dts/bcm2711.dtsi ++++ b/arch/arm/boot/dts/bcm2711.dtsi +@@ -46,6 +46,14 @@ + IRQ_TYPE_LEVEL_HIGH)>; + }; + ++ thermal: thermal@7d5d2200 { ++ compatible = "brcm,bcm2711-thermal"; ++ reg = <0x7d5d2200 0x4>; ++ clocks = <&clocks BCM2835_CLOCK_TSENS>; ++ #thermal-sensor-cells = <0>; ++ status = "okay"; ++ }; ++ + dma: dma@7e007000 { + compatible = "brcm,bcm2835-dma"; + reg = <0x7e007000 0xb00>; +@@ -317,6 +325,7 @@ + + &cpu_thermal { + coefficients = <(-487) 410040>; ++ thermal-sensors = <&thermal>; + }; + + &dsi0 { + +From patchwork Fri Nov 1 13:42:29 2019 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +X-Patchwork-Submitter: Stefan Wahren <wahrenst@gmx.net> +X-Patchwork-Id: 11223135 +Return-Path: + <SRS0=rCIu=YZ=lists.infradead.org=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@kernel.org> +Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org + [172.30.200.123]) + by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4370814E5 + for <patchwork-linux-arm@patchwork.kernel.org>; + Fri, 1 Nov 2019 13:43:33 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Daniel Lezcano <daniel.lezcano@linaro.org>, + Amit Kucheria <amit.kucheria@verdurent.com>, + Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, + Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>, + Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, + Markus Mayer <mmayer@broadcom.com> +Subject: [PATCH 4/4] ARM: configs: Build BCM2711 thermal as module +Date: Fri, 1 Nov 2019 14:42:29 +0100 +Message-Id: <1572615749-9524-5-git-send-email-wahrenst@gmx.net> +X-Mailer: git-send-email 2.7.4 +In-Reply-To: <1572615749-9524-1-git-send-email-wahrenst@gmx.net> +References: <1572615749-9524-1-git-send-email-wahrenst@gmx.net> +X-Provags-ID: V03:K1:TbKDFSyoLz5kGUMLh2sdMchsMi8B7ywabIQ029/PvKMAKErCJPq + LaV4eY+9A6wMG6XJAq+AzVhHdeDbWKCIQ2SdpxaHQVJDnPz05KWwr/zYmz4qRItRUAmMueQ + 52bZwE1KDdhZw19Aa3Vn6hRMebJFvpX727zxqEUbD6e5Il680xV+/xuwUvFKrOLUtnTXGr9 + eM4jtb+KLzwTZf5GlyVCA== +X-Spam-Flag: NO +X-UI-Out-Filterresults: 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<mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> +List-Subscribe: + <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, + <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> +Cc: devicetree@vger.kernel.org, linux-pm@vger.kernel.org, + bcm-kernel-feedback-list@broadcom.com, Stefan Wahren <wahrenst@gmx.net>, + Chen-Yu Tsai <wens@kernel.org>, linux-arm-kernel@lists.infradead.org +MIME-Version: 1.0 +Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> +Errors-To: + linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org + +This builds the BCM2711 thermal driver as module for the Raspberry Pi 4. + +Signed-off-by: Stefan Wahren <wahrenst@gmx.net> +--- + arch/arm/configs/multi_v7_defconfig | 1 + + arch/arm64/configs/defconfig | 1 + + 2 files changed, 2 insertions(+) + +-- +2.7.4 + +diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig +index 13ba532..441b795 100644 +--- a/arch/arm/configs/multi_v7_defconfig ++++ b/arch/arm/configs/multi_v7_defconfig +@@ -487,6 +487,7 @@ CONFIG_IMX_THERMAL=y + CONFIG_ROCKCHIP_THERMAL=y + CONFIG_RCAR_THERMAL=y + CONFIG_ARMADA_THERMAL=y ++CONFIG_BCM2711_THERMAL=m + CONFIG_BCM2835_THERMAL=m + CONFIG_BRCMSTB_THERMAL=m + CONFIG_ST_THERMAL_MEMMAP=y +diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig +index 8e05c39..0a52987 100644 +--- a/arch/arm64/configs/defconfig ++++ b/arch/arm64/configs/defconfig +@@ -444,6 +444,7 @@ CONFIG_ROCKCHIP_THERMAL=m + CONFIG_RCAR_THERMAL=y + CONFIG_RCAR_GEN3_THERMAL=y + CONFIG_ARMADA_THERMAL=y ++CONFIG_BCM2711_THERMAL=m + CONFIG_BCM2835_THERMAL=m + CONFIG_BRCMSTB_THERMAL=m + CONFIG_EXYNOS_THERMAL=y |