mirror of
https://github.com/torvalds/linux.git
synced 2024-12-25 20:32:22 +00:00
992d36158a
This patch adds bindings for Qualcomm SLIMBus NGD controller. SLIMBus NGD controller is a light-weight driver responsible for communicating with SLIMBus slaves directly over the bus using messaging interface and communicating with master component residing on ADSP for bandwidth and data-channel management Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Tested-by: Craig Tatlor <ctatlor97@gmail.com> Reviewed-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
85 lines
1.9 KiB
Plaintext
85 lines
1.9 KiB
Plaintext
Qualcomm SLIMBus Non Generic Device (NGD) Controller binding
|
|
|
|
SLIMBus NGD controller is a light-weight driver responsible for communicating
|
|
with SLIMBus slaves directly over the bus using messaging interface and
|
|
communicating with master component residing on ADSP for bandwidth and
|
|
data-channel management
|
|
|
|
Please refer to slimbus/bus.txt for details of the common SLIMBus bindings.
|
|
|
|
- compatible:
|
|
Usage: required
|
|
Value type: <stringlist>
|
|
Definition: must be "qcom,slim-ngd-v<MAJOR>.<MINOR>.<STEP>"
|
|
must be one of the following.
|
|
"qcom,slim-ngd-v1.5.0" for MSM8996
|
|
"qcom,slim-ngd-v2.1.0" for SDM845
|
|
|
|
- reg:
|
|
Usage: required
|
|
Value type: <prop-encoded-array>
|
|
Definition: must specify the base address and size of the controller
|
|
register space.
|
|
- dmas
|
|
Usage: required
|
|
Value type: <array of phandles>
|
|
Definition: List of rx and tx dma channels
|
|
|
|
- dma-names
|
|
Usage: required
|
|
Value type: <stringlist>
|
|
Definition: must be "rx" and "tx".
|
|
|
|
- interrupts:
|
|
Usage: required
|
|
Value type: <prop-encoded-array>
|
|
Definition: must list controller IRQ.
|
|
|
|
#address-cells
|
|
Usage: required
|
|
Value type: <u32>
|
|
Definition: Should be 1, reflecting the instance id of ngd.
|
|
|
|
#size-cells
|
|
Usage: required
|
|
Value type: <u32>
|
|
Definition: Should be 0
|
|
|
|
= NGD Devices
|
|
Each subnode represents an instance of NGD, must contain the following
|
|
properties:
|
|
|
|
- reg:
|
|
Usage: required
|
|
Value type: <u32>
|
|
Definition: Should be instance id of ngd.
|
|
|
|
#address-cells
|
|
Usage: required
|
|
Refer to slimbus/bus.txt for details of the common SLIMBus bindings.
|
|
|
|
#size-cells
|
|
Usage: required
|
|
Refer to slimbus/bus.txt for details of the common SLIMBus bindings.
|
|
|
|
= EXAMPLE
|
|
|
|
slim@91c0000 {
|
|
compatible = "qcom,slim-ngd-v1.5.0";
|
|
reg = <0x91c0000 0x2c000>;
|
|
interrupts = <0 163 0>;
|
|
dmas = <&slimbam 3>, <&slimbam 4>;
|
|
dma-names = "rx", "tx";
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
ngd@1 {
|
|
reg = <1>;
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
codec@1 {
|
|
compatible = "slim217,1a0";
|
|
reg = <1 0>;
|
|
};
|
|
};
|
|
};
|