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706eacadd5
Pull devicetree updates from Rob Herring:
"DT core:
- Fix node refcounting in of_find_last_cache_level()
- Constify device_node in of_device_compatible_match()
- Fix 'dma-ranges' handling in bus controller nodes
- Fix handling of initrd start > end
- Improve error reporting in of_irq_init()
- Taint kernel on DT unittest running
- Use strscpy instead of strlcpy
- Add a build target, dt_compatible_check, to check for compatible
strings used in kernel sources against compatible strings in DT
schemas.
- Handle DT_SCHEMA_FILES changes when rebuilding
DT bindings:
- LED bindings for MT6370 PMIC
- Convert Mediatek mtk-gce mailbox, MIPS CPU interrupt controller,
mt7621 I2C, virtio,pci-iommu, nxp,tda998x, QCom fastrpc, qcom,pdc,
and arm,versatile-sysreg to DT schema format
- Add nvmem cells to u-boot,env schema
- Add more LED_COLOR_ID definitions
- Require 'opp-table' uses to be a node
- Various schema fixes to match QEMU 'virt' DT usage
- Tree wide dropping of redundant 'Device Tree Binding' in schema
titles
- More (unevaluated|additional)Properties fixes in schema child nodes
- Drop various redundant minItems equal to maxItems"
* tag 'devicetree-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (62 commits)
of: base: Shift refcount decrement in of_find_last_cache_level()
dt-bindings: leds: Add MediaTek MT6370 flashlight
dt-bindings: leds: mt6370: Add MediaTek MT6370 current sink type LED indicator
dt-bindings: mailbox: Convert mtk-gce to DT schema
of: base: make of_device_compatible_match() accept const device node
of: Fix "dma-ranges" handling for bus controllers
of: fdt: Remove unused struct fdt_scan_status
dt-bindings: display: st,stm32-dsi: Handle data-lanes in DSI port node
dt-bindings: timer: Add power-domains for TI timer-dm on K3
dt: Add a check for undocumented compatible strings in kernel
kbuild: take into account DT_SCHEMA_FILES changes while checking dtbs
dt-bindings: interrupt-controller: migrate MIPS CPU interrupt controller text bindings to YAML
dt-bindings: i2c: migrate mt7621 text bindings to YAML
dt-bindings: power: gpcv2: correct patternProperties
dt-bindings: virtio: Convert virtio,pci-iommu to DT schema
dt-bindings: timer: arm,arch_timer: Allow dual compatible string
dt-bindings: arm: cpus: Add kryo240 compatible
dt-bindings: display: bridge: nxp,tda998x: Convert to json-schema
dt-bindings: nvmem: u-boot,env: add basic NVMEM cells
dt-bindings: remoteproc: qcom,adsp: enforce smd-edge schema
...
74 lines
1.8 KiB
YAML
74 lines
1.8 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/memory-controllers/fsl/imx8m-ddrc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: i.MX8M DDR Controller
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maintainers:
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- Peng Fan <peng.fan@nxp.com>
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description:
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The DDRC block is integrated in i.MX8M for interfacing with DDR based
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memories.
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It supports switching between different frequencies at runtime but during
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this process RAM itself becomes briefly inaccessible so actual frequency
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switching is implemented by TF-A code which runs from a SRAM area.
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The Linux driver for the DDRC doesn't even map registers (they're included
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for the sake of "describing hardware"), it mostly just exposes firmware
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capabilities through standard Linux mechanism like devfreq and OPP tables.
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properties:
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compatible:
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items:
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- enum:
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- fsl,imx8mn-ddrc
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- fsl,imx8mm-ddrc
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- fsl,imx8mq-ddrc
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- const: fsl,imx8m-ddrc
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reg:
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maxItems: 1
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description:
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Base address and size of DDRC CTL area.
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This is not currently mapped by the imx8m-ddrc driver.
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clocks:
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maxItems: 4
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clock-names:
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items:
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- const: core
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- const: pll
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- const: alt
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- const: apb
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operating-points-v2: true
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opp-table:
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type: object
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required:
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- reg
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- compatible
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- clocks
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- clock-names
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/imx8mm-clock.h>
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ddrc: memory-controller@3d400000 {
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compatible = "fsl,imx8mm-ddrc", "fsl,imx8m-ddrc";
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reg = <0x3d400000 0x400000>;
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clock-names = "core", "pll", "alt", "apb";
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clocks = <&clk IMX8MM_CLK_DRAM_CORE>,
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<&clk IMX8MM_DRAM_PLL>,
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<&clk IMX8MM_CLK_DRAM_ALT>,
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<&clk IMX8MM_CLK_DRAM_APB>;
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operating-points-v2 = <&ddrc_opp_table>;
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};
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