From 01b1b375281b77233d65eb0ebda8e4e3a1bd2407 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 10 Mar 2021 23:22:18 +0100 Subject: bcm53xx: backport NVMEM NVRAM driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It supports NVRAM access described using DT binding. Right now NVRAM data is exposed using /sys/bus/nvmem/ only. Signed-off-by: Rafał Miłecki --- ...01-dt-bindings-nvmem-add-Broadcom-s-NVRAM.patch | 56 ++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 target/linux/bcm53xx/patches-5.4/080-v5.13-0001-dt-bindings-nvmem-add-Broadcom-s-NVRAM.patch (limited to 'target/linux/bcm53xx/patches-5.4/080-v5.13-0001-dt-bindings-nvmem-add-Broadcom-s-NVRAM.patch') diff --git a/target/linux/bcm53xx/patches-5.4/080-v5.13-0001-dt-bindings-nvmem-add-Broadcom-s-NVRAM.patch b/target/linux/bcm53xx/patches-5.4/080-v5.13-0001-dt-bindings-nvmem-add-Broadcom-s-NVRAM.patch new file mode 100644 index 0000000000..01e29aaad6 --- /dev/null +++ b/target/linux/bcm53xx/patches-5.4/080-v5.13-0001-dt-bindings-nvmem-add-Broadcom-s-NVRAM.patch @@ -0,0 +1,56 @@ +From c39edb9f9dcb6c8a0ba0ebf5df9e0ac93ab94b82 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Fri, 5 Mar 2021 19:32:35 +0100 +Subject: [PATCH] dt-bindings: nvmem: add Broadcom's NVRAM +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Broadcom's NVRAM structure contains device data and can be accessed +using I/O mapping. + +Signed-off-by: Rafał Miłecki +Reviewed-by: Rob Herring +Signed-off-by: Srinivas Kandagatla +--- + .../devicetree/bindings/nvmem/brcm,nvram.yaml | 34 +++++++++++++++++++ + 1 file changed, 34 insertions(+) + create mode 100644 Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml + +--- /dev/null ++++ b/Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml +@@ -0,0 +1,34 @@ ++# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) ++%YAML 1.2 ++--- ++$id: http://devicetree.org/schemas/nvmem/brcm,nvram.yaml# ++$schema: http://devicetree.org/meta-schemas/core.yaml# ++ ++title: Broadcom's NVRAM ++ ++description: | ++ Broadcom's NVRAM is a structure containing device specific environment ++ variables. It is used for storing device configuration, booting parameters ++ and calibration data. ++ ++ NVRAM can be accessed on Broadcom BCM47xx MIPS and Northstar ARM Cortex-A9 ++ devices usiong I/O mapped memory. ++ ++maintainers: ++ - Rafał Miłecki ++ ++allOf: ++ - $ref: "nvmem.yaml#" ++ ++properties: ++ compatible: ++ const: brcm,nvram ++ ++unevaluatedProperties: false ++ ++examples: ++ - | ++ nvram@1eff0000 { ++ compatible = "brcm,nvram"; ++ reg = <0x1eff0000 0x10000>; ++ }; -- cgit v1.2.3