c5330723d5
Support for old NVMEM fixed cells was deprecated in favour of "fixed-layout". It's still part of the nvmem.yaml though and may be unknowingly used by new bindings added without much of analyze. To make it more difficult to accidentally support old syntax move its binding to separated file with "deprecated" in its name. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Neil Armstrong <neil.armstrong@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20231020105545.216052-4-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
93 lines
2.4 KiB
YAML
93 lines
2.4 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/nvmem/nvmem.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: NVMEM (Non Volatile Memory)
|
|
|
|
maintainers:
|
|
- Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
|
|
|
|
description: |
|
|
This binding is intended to represent the location of hardware
|
|
configuration data stored in NVMEMs like eeprom, efuses and so on.
|
|
|
|
On a significant proportion of boards, the manufacturer has stored
|
|
some data on NVMEM, for the OS to be able to retrieve these
|
|
information and act upon it. Obviously, the OS has to know about
|
|
where to retrieve these data from, and where they are stored on the
|
|
storage device.
|
|
|
|
properties:
|
|
"#address-cells":
|
|
const: 1
|
|
|
|
"#size-cells":
|
|
const: 1
|
|
|
|
read-only:
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
|
description:
|
|
Mark the provider as read only.
|
|
|
|
wp-gpios:
|
|
description:
|
|
GPIO to which the write-protect pin of the chip is connected.
|
|
The write-protect GPIO is asserted, when it's driven high
|
|
(logical '1') to block the write operation. It's deasserted,
|
|
when it's driven low (logical '0') to allow writing.
|
|
maxItems: 1
|
|
|
|
nvmem-layout:
|
|
$ref: /schemas/nvmem/layouts/nvmem-layout.yaml
|
|
description:
|
|
Alternative to the statically defined nvmem cells, this
|
|
container may reference more advanced (dynamic) layout
|
|
parsers.
|
|
|
|
additionalProperties: true
|
|
|
|
examples:
|
|
- |
|
|
#include <dt-bindings/gpio/gpio.h>
|
|
|
|
qfprom: eeprom@700000 {
|
|
compatible = "qcom,msm8974-qfprom", "qcom,qfprom";
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
reg = <0x00700000 0x100000>;
|
|
|
|
wp-gpios = <&gpio1 3 GPIO_ACTIVE_HIGH>;
|
|
|
|
/* ... */
|
|
|
|
nvmem-layout {
|
|
compatible = "fixed-layout";
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
|
|
/* Data cells */
|
|
tsens_calibration: calib@404 {
|
|
reg = <0x404 0x10>;
|
|
};
|
|
|
|
tsens_calibration_bckp: calib_bckp@504 {
|
|
reg = <0x504 0x11>;
|
|
bits = <6 128>;
|
|
};
|
|
|
|
pvs_version: pvs-version@6 {
|
|
reg = <0x6 0x2>;
|
|
bits = <7 2>;
|
|
};
|
|
|
|
speed_bin: speed-bin@c{
|
|
reg = <0xc 0x1>;
|
|
bits = <2 3>;
|
|
};
|
|
};
|
|
};
|
|
|
|
...
|