diff mbox series

[v3,2/6] dt-bindings: arm: sunxi: Expand MBUS binding

Message ID 20211118031841.42315-3-samuel@sholland.org (mailing list archive)
State Not Applicable, archived
Headers show
Series DRAM devfreq support for Allwinner A64/H5 | expand

Commit Message

Samuel Holland Nov. 18, 2021, 3:18 a.m. UTC 
The MBUS provides more than address translation and bandwidth control.
It also provides a PMU to measure bandwidth usage by certain masters,
and it provides notification via IRQ when they are active or idle.

The MBUS is also tightly integrated with the DRAM controller to provide
a Memory Dynamic Frequency Scaling (MDFS) feature. In view of this, the
MBUS binding needs to represent the hardware resources needed for MDFS,
which include the clocks and MMIO range of the adjacent DRAM controller.

Add the additional resources for the H3 and A64 compatibles, and a new
example showing how they are used.

Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Samuel Holland <samuel@sholland.org>
---
 .../arm/sunxi/allwinner,sun4i-a10-mbus.yaml   | 89 ++++++++++++++++++-
 1 file changed, 86 insertions(+), 3 deletions(-)

Comments

Rob Herring Nov. 18, 2021, 1:58 p.m. UTC | #1 
On Wed, 17 Nov 2021 21:18:37 -0600, Samuel Holland wrote:
> The MBUS provides more than address translation and bandwidth control.
> It also provides a PMU to measure bandwidth usage by certain masters,
> and it provides notification via IRQ when they are active or idle.
> 
> The MBUS is also tightly integrated with the DRAM controller to provide
> a Memory Dynamic Frequency Scaling (MDFS) feature. In view of this, the
> MBUS binding needs to represent the hardware resources needed for MDFS,
> which include the clocks and MMIO range of the adjacent DRAM controller.
> 
> Add the additional resources for the H3 and A64 compatibles, and a new
> example showing how they are used.
> 
> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
> Signed-off-by: Samuel Holland <samuel@sholland.org>
> ---
>  .../arm/sunxi/allwinner,sun4i-a10-mbus.yaml   | 89 ++++++++++++++++++-
>  1 file changed, 86 insertions(+), 3 deletions(-)
> 

Running 'make dtbs_check' with the schema in this patch gives the
following warnings. Consider if they are expected or the schema is
incorrect. These may not be new warnings.

Note that it is not yet a requirement to have 0 warnings for dtbs_check.
This will change in the future.

Full log is available here: https://patchwork.ozlabs.org/patch/1556462


dram-controller@1c62000: 'clock-names' is a required property
	arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-nanopi-a64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-orangepi-win.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-lts.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.0.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinetab.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinetab-early-adopter.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-bananapi-m2-plus.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-bananapi-m2-plus-v1.2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-emlid-neutis-n5-devboard.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h3-cc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h3-it.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h5-cc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-r1s-h5.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-pc2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-libretech-all-h3-cc.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dt.yaml
	arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus-v1.2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-beelink-x2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-emlid-neutis-n5h3-devboard.dt.yaml
	arch/arm/boot/dts/sun8i-h3-libretech-all-h3-cc.dt.yaml
	arch/arm/boot/dts/sun8i-h3-mapleboard-mp130.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-m1.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-neo-air.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-neo.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-r1.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-lite.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-one.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-pc.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-pc-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-plus2e.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-zero-plus2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-rervision-dvk.dt.yaml
	arch/arm/boot/dts/sun8i-h3-zeropi.dt.yaml

dram-controller@1c62000: clocks: [[2, 112]] is too short
	arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-nanopi-a64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-orangepi-win.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-lts.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.0.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinetab.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinetab-early-adopter.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dt.yaml

dram-controller@1c62000: clocks: [[3, 113]] is too short
	arch/arm64/boot/dts/allwinner/sun50i-h5-bananapi-m2-plus.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-bananapi-m2-plus-v1.2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-emlid-neutis-n5-devboard.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h3-cc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h3-it.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h5-cc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-r1s-h5.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-pc2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-libretech-all-h3-cc.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dt.yaml
	arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus-v1.2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-beelink-x2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-emlid-neutis-n5h3-devboard.dt.yaml
	arch/arm/boot/dts/sun8i-h3-libretech-all-h3-cc.dt.yaml
	arch/arm/boot/dts/sun8i-h3-mapleboard-mp130.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-m1.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-neo-air.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-neo.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-r1.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-lite.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-one.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-pc.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-pc-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-plus2e.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-zero-plus2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-rervision-dvk.dt.yaml
	arch/arm/boot/dts/sun8i-h3-zeropi.dt.yaml

dram-controller@1c62000: reg: [[29761536, 4096]] is too short
	arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-nanopi-a64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-orangepi-win.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-lts.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.0.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinetab.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinetab-early-adopter.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-bananapi-m2-plus.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-bananapi-m2-plus-v1.2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-emlid-neutis-n5-devboard.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h3-cc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h3-it.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h5-cc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-r1s-h5.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-pc2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-libretech-all-h3-cc.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dt.yaml
	arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus-v1.2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-beelink-x2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-emlid-neutis-n5h3-devboard.dt.yaml
	arch/arm/boot/dts/sun8i-h3-libretech-all-h3-cc.dt.yaml
	arch/arm/boot/dts/sun8i-h3-mapleboard-mp130.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-m1.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-neo-air.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-neo.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-r1.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-lite.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-one.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-pc.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-pc-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-plus2e.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-zero-plus2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-rervision-dvk.dt.yaml
	arch/arm/boot/dts/sun8i-h3-zeropi.dt.yaml

dram-controller@1c62000: 'reg-names' is a required property
	arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-nanopi-a64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-orangepi-win.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-lts.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.0.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinetab.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-pinetab-early-adopter.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-bananapi-m2-plus.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-bananapi-m2-plus-v1.2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-emlid-neutis-n5-devboard.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h3-cc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h3-it.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h5-cc.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-r1s-h5.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-pc2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus2.dt.yaml
	arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-libretech-all-h3-cc.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-orangepi-r1.dt.yaml
	arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dt.yaml
	arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus-v1.2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-beelink-x2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-emlid-neutis-n5h3-devboard.dt.yaml
	arch/arm/boot/dts/sun8i-h3-libretech-all-h3-cc.dt.yaml
	arch/arm/boot/dts/sun8i-h3-mapleboard-mp130.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-m1.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-neo-air.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-neo.dt.yaml
	arch/arm/boot/dts/sun8i-h3-nanopi-r1.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-lite.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-one.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-pc.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-pc-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-plus2e.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-plus.dt.yaml
	arch/arm/boot/dts/sun8i-h3-orangepi-zero-plus2.dt.yaml
	arch/arm/boot/dts/sun8i-h3-rervision-dvk.dt.yaml
	arch/arm/boot/dts/sun8i-h3-zeropi.dt.yaml
Maxime Ripard Nov. 23, 2021, 10:40 a.m. UTC | #2 
On Wed, 17 Nov 2021 21:18:37 -0600, Samuel Holland wrote:
> The MBUS provides more than address translation and bandwidth control.
> It also provides a PMU to measure bandwidth usage by certain masters,
> and it provides notification via IRQ when they are active or idle.
> 
> The MBUS is also tightly integrated with the DRAM controller to provide
> a Memory Dynamic Frequency Scaling (MDFS) feature. In view of this, the
> MBUS binding needs to represent the hardware resources needed for MDFS,
> which include the clocks and MMIO range of the adjacent DRAM controller.
> 
> [...]

Applied to sunxi/linux.git (sunxi/dt-for-5.17).

Thanks!
Maxime
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml b/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml
index 29c9961ee2d8..2b3829e0e240 100644
--- a/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml
+++ b/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml
@@ -34,10 +34,35 @@  properties:
       - allwinner,sun50i-a64-mbus
 
   reg:
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: MBUS interconnect/bandwidth limit/PMU registers
+      - description: DRAM controller/PHY registers
+
+  reg-names:
+    minItems: 1
+    items:
+      - const: mbus
+      - const: dram
 
   clocks:
+    minItems: 1
+    items:
+      - description: MBUS interconnect module clock
+      - description: DRAM controller/PHY module clock
+      - description: Register bus clock, shared by MBUS and DRAM
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: mbus
+      - const: dram
+      - const: bus
+
+  interrupts:
     maxItems: 1
+    description:
+      MBUS PMU activity interrupt.
 
   dma-ranges:
     description:
@@ -54,13 +79,54 @@  required:
   - clocks
   - dma-ranges
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - allwinner,sun8i-h3-mbus
+          - allwinner,sun50i-a64-mbus
+
+then:
+  properties:
+    reg:
+      minItems: 2
+
+    reg-names:
+      minItems: 2
+
+    clocks:
+      minItems: 3
+
+    clock-names:
+      minItems: 3
+
+  required:
+    - reg-names
+    - clock-names
+
+else:
+  properties:
+    reg:
+      maxItems: 1
+
+    reg-names:
+      maxItems: 1
+
+    clocks:
+      maxItems: 1
+
+    clock-names:
+      maxItems: 1
+
 additionalProperties: false
 
 examples:
   - |
-    #include <dt-bindings/clock/sun5i-ccu.h>
+    #include <dt-bindings/clock/sun50i-a64-ccu.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
 
-    mbus: dram-controller@1c01000 {
+    dram-controller@1c01000 {
         compatible = "allwinner,sun5i-a13-mbus";
         reg = <0x01c01000 0x1000>;
         clocks = <&ccu CLK_MBUS>;
@@ -70,4 +136,21 @@  examples:
         #interconnect-cells = <1>;
     };
 
+  - |
+    dram-controller@1c62000 {
+        compatible = "allwinner,sun50i-a64-mbus";
+        reg = <0x01c62000 0x1000>,
+              <0x01c63000 0x1000>;
+        reg-names = "mbus", "dram";
+        clocks = <&ccu CLK_MBUS>,
+                 <&ccu CLK_DRAM>,
+                 <&ccu CLK_BUS_DRAM>;
+        clock-names = "mbus", "dram", "bus";
+        interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        dma-ranges = <0x00000000 0x40000000 0xc0000000>;
+        #interconnect-cells = <1>;
+    };
+
 ...