Spracherkennung für: .yaml vermutete Sprache: Unknown {[0] [0] [0]} [Methode: Schwerpunktbildung, einfache Gewichte, sechs Dimensionen]
# SPDX-License-Identifier: (GPL-
2.
0 OR BSD-
2-Clause)
%YAML
1.
2
---
$id:
http://devicetree.org/schemas/arm/stm32/st,mlahb.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: STMicroelectronics STM32 ML-AHB interconnect
maintainers:
- Fabien Dessenne <fabien.dessenne@foss.st.com>
- Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
description: |
These bindings describe the STM32 SoCs ML-AHB interconnect bus which connects
a Cortex-M subsystem with dedicated memories. The MCU SRAM and RETRAM memory
parts can be accessed through different addresses (see "RAM aliases" in [
1])
using different buses (see [
2]): balancing the Cortex-M firmware accesses
among those ports allows to tune the system performance.
[
1]:
https://www.st.com/resource/en/reference_manual/dm00327659.pdf
[
2]:
https://wiki.st.com/stm32mpu/wiki/STM32MP15_RAM_mapping
allOf:
- $ref: /schemas/simple-bus.yaml#
properties:
compatible:
contains:
enum:
- st,mlahb
dma-ranges:
description: |
Describe memory addresses translation between the local CPU and the
remote Cortex-M processor. Each memory region, is declared with
3 parameters:
- param
1: device base address (Cortex-M processor address)
- param
2: physical base address (local CPU address)
- param
3: size of the memory region.
maxItems:
3
'#address-cells':
const:
1
'#size-cells':
const:
1
required:
- compatible
- '#address-cells'
- '#size-cells'
- dma-ranges
unevaluatedProperties: false
examples:
- |
ahb {
compatible = "st,mlahb", "simple-bus";
#address-cells = <
1>;
#size-cells = <
1>;
ranges;
dma-ranges = <
0x00000000
0x38000000
0x10000>,
<
0x10000000
0x10000000
0x60000>,
<
0x30000000
0x30000000
0x60000>;
m4_rproc: m4@
10000000 {
reg = <
0x10000000
0x40000>;
};
};
...