diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-5.4/181-0001-dt-bindings-firmware-add-Broadcom-s-NVRAM-memory-map.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-5.4/181-0001-dt-bindings-firmware-add-Broadcom-s-NVRAM-memory-map.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-5.4/181-0001-dt-bindings-firmware-add-Broadcom-s-NVRAM-memory-map.patch b/target/linux/bcm53xx/patches-5.4/181-0001-dt-bindings-firmware-add-Broadcom-s-NVRAM-memory-map.patch new file mode 100644 index 0000000000..1b0598777c --- /dev/null +++ b/target/linux/bcm53xx/patches-5.4/181-0001-dt-bindings-firmware-add-Broadcom-s-NVRAM-memory-map.patch @@ -0,0 +1,56 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Tue, 2 Mar 2021 08:23:35 +0100 +Subject: [PATCH] dt-bindings: firmware: add Broadcom's NVRAM memory mapping + +NVRAM structure contains device data and can be accessed using MMIO. + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +--- + .../bindings/firmware/brcm,nvram.yaml | 41 +++++++++++++++++++ + 1 file changed, 41 insertions(+) + create mode 100644 Documentation/devicetree/bindings/firmware/brcm,nvram.yaml + +--- /dev/null ++++ b/Documentation/devicetree/bindings/firmware/brcm,nvram.yaml +@@ -0,0 +1,41 @@ ++# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) ++%YAML 1.2 ++--- ++$id: "http://devicetree.org/schemas/firmware/brcm,nvram.yaml#" ++$schema: "http://devicetree.org/meta-schemas/core.yaml#" ++ ++title: Broadcom's NVRAM ++ ++maintainers: ++ - Rafał Miłecki <rafal@milecki.pl> ++ ++description: | ++ NVRAM is a structure containing device specific environment variables. ++ It is used for storing device configuration, booting parameters and ++ calibration data. ++ ++ It's required very early in booting process and so is made available ++ using memory mapping. ++ ++ NVRAM can be found on Broadcom BCM47xx MIPS, Northstar ARM Cortex-A9 ++ and some more devices. ++ ++properties: ++ compatible: ++ const: brcm,nvram ++ ++ reg: ++ description: memory region with NVRAM data ++ maxItems: 1 ++ ++required: ++ - reg ++ ++additionalProperties: false ++ ++examples: ++ - | ++ nvram@1e000000 { ++ compatible = "brcm,nvram"; ++ reg = <0x1e000000 0x10000>; ++ }; |