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>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20211118031841.42315-3-samuel@sholland.org
A recent update to dtc and changes to the default warnings introduced
some new warnings in the DT binding examples:
Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.example.dts:23.13-61:
Warning (dma_ranges_format): /example-0/dram-controller@1c01000:dma-ranges: "dma-ranges" property has invalid length (12 bytes) (parent #address-cells == 1, child #address-cells == 2, #size-cells == 1)
Documentation/devicetree/bindings/hwmon/adi,axi-fan-control.example.dts:17.22-28.11:
Warning (unit_address_vs_reg): /example-0/fpga-axi@0: node has a unit name, but no reg or ranges property
Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.example.dts:34.13-54:
Warning (dma_ranges_format): /example-0/memory-controller@2c00000:dma-ranges: "dma-ranges" property has invalid length (24 bytes) (parent #address-cells == 1, child #address-cells == 2, #size-cells == 2)
Documentation/devicetree/bindings/mfd/st,stpmic1.example.dts:19.15-79.11:
Warning (unit_address_vs_reg): /example-0/i2c@0: node has a unit name, but no reg or ranges property
Documentation/devicetree/bindings/net/qcom,ipq8064-mdio.example.dts:28.23-31.15:
Warning (unit_address_vs_reg): /example-0/mdio@37000000/switch@10: node has a unit name, but no reg or ranges property
Documentation/devicetree/bindings/rng/brcm,bcm2835.example.dts:17.5-21.11:
Warning (unit_address_vs_reg): /example-0/rng: node has a reg or ranges property, but no unit name
Documentation/devicetree/bindings/spi/qcom,spi-qcom-qspi.example.dts:20.20-43.11:
Warning (unit_address_vs_reg): /example-0/soc@0: node has a unit name, but no reg or ranges property
Documentation/devicetree/bindings/usb/ingenic,musb.example.dts:18.28-21.11:
Warning (unit_address_vs_reg): /example-0/usb-phy@0: node has a unit name, but no reg or ranges property
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: "Nuno Sá" <nuno.sa@analog.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: bcm-kernel-feedback-list@broadcom.com
Cc: Mark Brown <broonie@kernel.org>
Cc: linux-hwmon@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Cc: linux-arm-msm@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-crypto@vger.kernel.org
Cc: linux-rpi-kernel@lists.infradead.org
Cc: linux-spi@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
The older Allwinner SoCs have an MBUS controller that is used by Linux,
with a matching Device Tree binding.
Now that we have the DT validation in place, let's convert the device tree
bindings for that controller over to a YAML schemas.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Rob Herring <robh@kernel.org>
