From patchwork Tue Jan 12 14:23:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 362370 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49799C4332B for ; Tue, 12 Jan 2021 14:24:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 03F492312C for ; Tue, 12 Jan 2021 14:24:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727252AbhALOYk (ORCPT ); Tue, 12 Jan 2021 09:24:40 -0500 Received: from mx2.suse.de ([195.135.220.15]:58018 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730061AbhALOYj (ORCPT ); Tue, 12 Jan 2021 09:24:39 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id D68FBACAC; Tue, 12 Jan 2021 14:23:57 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, linux-kernel@vger.kernel.org, Saenz Julienne Cc: linux-arm-kernel@lists.infradead.org, linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, robh+dt@kernel.org, bcm-kernel-feedback-list@broadcom.com, tim.gover@raspberrypi.com, phil@raspberrypi.com Subject: [PATCH v3 1/5] dt-bindings: nvmem: Add bindings for rmem driver Date: Tue, 12 Jan 2021 15:23:38 +0100 Message-Id: <20210112142342.7290-2-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210112142342.7290-1-nsaenzjulienne@suse.de> References: <20210112142342.7290-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Firmware/co-processors might use reserved memory areas in order to pass data stemming from an nvmem device otherwise non accessible to Linux. For example an EEPROM memory only physically accessible to firmware, or data only accessible early at boot time. Introduce the dt-bindings to nvmem's rmem. Signed-off-by: Nicolas Saenz Julienne Reviewed-by: Rob Herring --- Changes since v2: - Run yamllint and fix indentation issues Changes since v1: - Update schema to new driver design .../devicetree/bindings/nvmem/rmem.yaml | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/nvmem/rmem.yaml diff --git a/Documentation/devicetree/bindings/nvmem/rmem.yaml b/Documentation/devicetree/bindings/nvmem/rmem.yaml new file mode 100644 index 000000000000..1d85a0a30846 --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/rmem.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/nvmem/rmem.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Reserved Memory Based nvmem Device + +maintainers: + - Nicolas Saenz Julienne + +allOf: + - $ref: "nvmem.yaml#" + +properties: + compatible: + items: + - enum: + - raspberrypi,bootloader-config + - const: nvmem-rmem + + no-map: + $ref: /schemas/types.yaml#/definitions/flag + description: + Avoid creating a virtual mapping of the region as part of the OS' + standard mapping of system memory. + +required: + - compatible + - no-map + +unevaluatedProperties: false + +examples: + - | + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + + blconfig: nvram@10000000 { + compatible = "raspberrypi,bootloader-config", "nvmem-rmem"; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x10000000 0x1000>; + no-map; + }; + }; + +... From patchwork Tue Jan 12 14:23:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 361354 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3E7EC433E6 for ; Tue, 12 Jan 2021 14:24:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A46092312D for ; Tue, 12 Jan 2021 14:24:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731938AbhALOYm (ORCPT ); Tue, 12 Jan 2021 09:24:42 -0500 Received: from mx2.suse.de ([195.135.220.15]:58056 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725901AbhALOYl (ORCPT ); Tue, 12 Jan 2021 09:24:41 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 221B2AD7A; Tue, 12 Jan 2021 14:23:59 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, linux-kernel@vger.kernel.org, Rob Herring , Frank Rowand Cc: linux-arm-kernel@lists.infradead.org, linux@armlinux.org.uk, nsaenzjulienne@suse.de, catalin.marinas@arm.com, will@kernel.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com, tim.gover@raspberrypi.com, phil@raspberrypi.com, Rob Herring Subject: [PATCH v3 2/5] nvmem: Add driver to expose reserved memory as nvmem Date: Tue, 12 Jan 2021 15:23:39 +0100 Message-Id: <20210112142342.7290-3-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210112142342.7290-1-nsaenzjulienne@suse.de> References: <20210112142342.7290-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Firmware/co-processors might use reserved memory areas in order to pass data stemming from an nvmem device otherwise non accessible to Linux. For example an EEPROM memory only physically accessible to firmware, or data only accessible early at boot time. In order to expose this data to other drivers and user-space, the driver models the reserved memory area as an nvmem device. Signed-off-by: Nicolas Saenz Julienne Reviewed-by: Rob Herring Tested-by: Tim Gover --- Changes since v1: - Remove reserved memory phandle indirection by directly creating a platform device from the reserved memory DT node - Only map memory upon reading it to avoid corruption - Small cosmetic cleanups drivers/nvmem/Kconfig | 8 ++++ drivers/nvmem/Makefile | 2 + drivers/nvmem/rmem.c | 97 ++++++++++++++++++++++++++++++++++++++++++ drivers/of/platform.c | 1 + 4 files changed, 108 insertions(+) create mode 100644 drivers/nvmem/rmem.c diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index 954d3b4a52ab..fecc19b884bf 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -270,4 +270,12 @@ config SPRD_EFUSE This driver can also be built as a module. If so, the module will be called nvmem-sprd-efuse. +config NVMEM_RMEM + tristate "Reserved Memory Based Driver Support" + help + This drivers maps reserved memory into an nvmem device. It might be + useful to expose information left by firmware in memory. + + This driver can also be built as a module. If so, the module + will be called nvmem-rmem. endif diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile index a7c377218341..5376b8e0dae5 100644 --- a/drivers/nvmem/Makefile +++ b/drivers/nvmem/Makefile @@ -55,3 +55,5 @@ obj-$(CONFIG_NVMEM_ZYNQMP) += nvmem_zynqmp_nvmem.o nvmem_zynqmp_nvmem-y := zynqmp_nvmem.o obj-$(CONFIG_SPRD_EFUSE) += nvmem_sprd_efuse.o nvmem_sprd_efuse-y := sprd-efuse.o +obj-$(CONFIG_NVMEM_RMEM) += nvmem-rmem.o +nvmem-rmem-y := rmem.o diff --git a/drivers/nvmem/rmem.c b/drivers/nvmem/rmem.c new file mode 100644 index 000000000000..b11c3c974b3d --- /dev/null +++ b/drivers/nvmem/rmem.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 Nicolas Saenz Julienne + */ + +#include +#include +#include +#include +#include + +struct rmem { + struct device *dev; + struct nvmem_device *nvmem; + struct reserved_mem *mem; + + phys_addr_t size; +}; + +static int rmem_read(void *context, unsigned int offset, + void *val, size_t bytes) +{ + struct rmem *priv = context; + size_t available = priv->mem->size; + loff_t off = offset; + void *addr; + int count; + + /* + * Only map the reserved memory at this point to avoid potential rogue + * kernel threads inadvertently modifying it. Based on the current + * uses-cases for this driver, the performance hit isn't a concern. + * Nor is likely to be, given the nature of the subsystem. Most nvmem + * devices operate over slow buses to begin with. + * + * An alternative would be setting the memory as RO, set_memory_ro(), + * but as of Dec 2020 this isn't possible on arm64. + */ + addr = memremap(priv->mem->base, available, MEMREMAP_WB); + if (IS_ERR(addr)) { + dev_err(priv->dev, "Failed to remap memory region\n"); + return PTR_ERR(addr); + } + + count = memory_read_from_buffer(val, bytes, &off, addr, available); + + memunmap(addr); + + return count; +} + +static int rmem_probe(struct platform_device *pdev) +{ + struct nvmem_config config = { }; + struct device *dev = &pdev->dev; + struct reserved_mem *mem; + struct rmem *priv; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + priv->dev = dev; + + mem = of_reserved_mem_lookup(dev->of_node); + if (!mem) { + dev_err(dev, "Failed to lookup reserved memory\n"); + return -EINVAL; + } + priv->mem = mem; + + config.dev = dev; + config.priv = priv; + config.name = "rmem"; + config.size = mem->size; + config.reg_read = rmem_read; + + return PTR_ERR_OR_ZERO(devm_nvmem_register(dev, &config)); +} + +static const struct of_device_id rmem_match[] = { + { .compatible = "nvmem-rmem", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, rmem_match); + +static struct platform_driver rmem_driver = { + .probe = rmem_probe, + .driver = { + .name = "rmem", + .of_match_table = rmem_match, + }, +}; +module_platform_driver(rmem_driver); + +MODULE_AUTHOR("Nicolas Saenz Julienne "); +MODULE_DESCRIPTION("Reserved Memory Based nvmem Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/of/platform.c b/drivers/of/platform.c index 79bd5f5a1bf1..6699cdbe58b6 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -511,6 +511,7 @@ static const struct of_device_id reserved_mem_matches[] = { { .compatible = "qcom,rmtfs-mem" }, { .compatible = "qcom,cmd-db" }, { .compatible = "ramoops" }, + { .compatible = "nvmem-rmem" }, {} }; From patchwork Tue Jan 12 14:23:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 362371 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 231E6C43381 for ; Tue, 12 Jan 2021 14:24:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C76F92312E for ; Tue, 12 Jan 2021 14:24:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731873AbhALOYm (ORCPT ); Tue, 12 Jan 2021 09:24:42 -0500 Received: from mx2.suse.de ([195.135.220.15]:58082 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730061AbhALOYl (ORCPT ); Tue, 12 Jan 2021 09:24:41 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 0087CAD87; Tue, 12 Jan 2021 14:24:00 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, linux-kernel@vger.kernel.org, Rob Herring , Nicolas Saenz Julienne Cc: linux-arm-kernel@lists.infradead.org, linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com, tim.gover@raspberrypi.com, phil@raspberrypi.com Subject: [PATCH v3 3/5] ARM: dts: bcm2711: Add reserved memory template to hold firmware configuration Date: Tue, 12 Jan 2021 15:23:40 +0100 Message-Id: <20210112142342.7290-4-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210112142342.7290-1-nsaenzjulienne@suse.de> References: <20210112142342.7290-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org RPi4's co-processor will copy the board's bootloader[1] configuration into memory for the OS to consume. Specifically, for the bootloader configuration and upgrade user-space routines to query it through nvmem's sysfs interface. Introduce a reserved-memory area template for the co-processor to edit before booting the system so as for Linux not to overwrite that memory and to expose it as an nvmem device. Signed-off-by: Nicolas Saenz Julienne Tested-by: Tim Gover [1] https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2711_bootloader_config.md --- Changes since v1: - Introduce compatible string - Change alias name to something more explicit arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts index 403bacf986eb..3b4ab947492a 100644 --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts @@ -25,6 +25,7 @@ aliases { emmc2bus = &emmc2bus; ethernet0 = &genet; pcie0 = &pcie0; + blconfig = &blconfig; }; leds { @@ -218,6 +219,22 @@ &pwm1 { status = "okay"; }; +&rmem { + /* + * RPi4's co-processor will copy the board's bootloader configuration + * into memory for the OS to consume. It'll also update this node with + * its placement information. + */ + blconfig: nvram@0 { + compatible = "raspberrypi,bootloader-config", "nvmem-rmem"; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x0 0x0 0x0>; + no-map; + status = "disabled"; + }; +}; + /* SDHCI is used to control the SDIO for wireless */ &sdhci { #address-cells = <1>; From patchwork Tue Jan 12 14:23:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 361353 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73EBFC433E9 for ; Tue, 12 Jan 2021 14:25:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2637D2312D for ; Tue, 12 Jan 2021 14:25:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733099AbhALOZI (ORCPT ); Tue, 12 Jan 2021 09:25:08 -0500 Received: from mx2.suse.de ([195.135.220.15]:58382 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732122AbhALOZI (ORCPT ); Tue, 12 Jan 2021 09:25:08 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id D5502ADCA; Tue, 12 Jan 2021 14:24:00 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux@armlinux.org.uk, nsaenzjulienne@suse.de, catalin.marinas@arm.com, will@kernel.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, robh+dt@kernel.org, bcm-kernel-feedback-list@broadcom.com, tim.gover@raspberrypi.com, phil@raspberrypi.com Subject: [PATCH v3 4/5] arm64: defconfig: Enable nvmem's rmem driver Date: Tue, 12 Jan 2021 15:23:41 +0100 Message-Id: <20210112142342.7290-5-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210112142342.7290-1-nsaenzjulienne@suse.de> References: <20210112142342.7290-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org It'll be used by the RPi4 family of boards to access its bootloader configuration. Signed-off-by: Nicolas Saenz Julienne --- arch/arm64/configs/defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 9957b6669eb1..81b2418f7f72 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -1077,6 +1077,7 @@ CONFIG_ROCKCHIP_EFUSE=y CONFIG_NVMEM_SUNXI_SID=y CONFIG_UNIPHIER_EFUSE=y CONFIG_MESON_EFUSE=m +CONFIG_NVMEM_RMEM=m CONFIG_FPGA=y CONFIG_FPGA_MGR_STRATIX10_SOC=m CONFIG_FPGA_BRIDGE=m From patchwork Tue Jan 12 14:23:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 362369 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0996C433DB for ; Tue, 12 Jan 2021 14:25:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8D3BC2312C for ; Tue, 12 Jan 2021 14:25:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733197AbhALOZJ (ORCPT ); Tue, 12 Jan 2021 09:25:09 -0500 Received: from mx2.suse.de ([195.135.220.15]:58380 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726451AbhALOZI (ORCPT ); Tue, 12 Jan 2021 09:25:08 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id AF6C5AE6D; Tue, 12 Jan 2021 14:24:01 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux@armlinux.org.uk, nsaenzjulienne@suse.de, catalin.marinas@arm.com, will@kernel.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, robh+dt@kernel.org, bcm-kernel-feedback-list@broadcom.com, tim.gover@raspberrypi.com, phil@raspberrypi.com Subject: [PATCH v3 5/5] ARM: multi_v7_defconfig: Enable nvmem's rmem driver Date: Tue, 12 Jan 2021 15:23:42 +0100 Message-Id: <20210112142342.7290-6-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210112142342.7290-1-nsaenzjulienne@suse.de> References: <20210112142342.7290-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org It'll be used by the RPi4 family of boards to access its bootloader configuration. Signed-off-by: Nicolas Saenz Julienne --- arch/arm/configs/multi_v7_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 6492a3601e7c..0914fa09af0c 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -1106,6 +1106,7 @@ CONFIG_ROCKCHIP_EFUSE=m CONFIG_NVMEM_SUNXI_SID=y CONFIG_NVMEM_VF610_OCOTP=y CONFIG_MESON_MX_EFUSE=m +CONFIG_NVMEM_RMEM=m CONFIG_FSI=m CONFIG_FSI_MASTER_GPIO=m CONFIG_FSI_MASTER_HUB=m