Add bindings for DRAM MRQ GSC support.
Co-developed-by: Stefan Kristiansson <[email protected]>
Signed-off-by: Stefan Kristiansson <[email protected]>
Signed-off-by: Peter De Schrijver <[email protected]>
---
.../nvidia,tegra264-bpmp-shmem.yaml | 45 +++++++++++++++++++
1 file changed, 45 insertions(+)
create mode 100644 Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.yaml
diff --git a/Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.yaml b/Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.yaml
new file mode 100644
index 000000000000..1f9c2dfbf8c5
--- /dev/null
+++ b/Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reserved-memory/nvidia,tegra264-bpmp-shmem.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tegra CPU-NS - BPMP IPC reserved memory
+
+maintainers:
+ - Peter De Schrijver <[email protected]>
+
+description: |
+ Define a memory region used for communication between CPU-NS and BPMP.
+ Typically this node is created by the bootloader as the physical address
+ has to be known to both CPU-NS and BPMP for correct IPC operation.
+ The memory region is defined using a child node under /reserved-memory.
+ The sub-node is named shmem@<address>.
+
+allOf:
+ - $ref: reserved-memory.yaml
+
+properties:
+ compatible:
+ const: nvidia,tegra264-bpmp-shmem
+
+ reg:
+ description: The physical address and size of the shared SDRAM region
+
+unevaluatedProperties: false
+
+required:
+ - compatible
+ - reg
+ - no-map
+
+examples:
+ - |
+ reserved-memory {
+ dram_cpu_bpmp_mail: shmem@f1be0000 {
+ compatible = "nvidia,tegra264-bpmp-shmem";
+ reg = <0x0 0xf1be0000 0x0 0x2000>;
+ no-map;
+ };
+ };
+...
--
2.34.1
On Wed, 10 May 2023 14:31:32 +0300, Peter De Schrijver wrote:
> Add bindings for DRAM MRQ GSC support.
>
> Co-developed-by: Stefan Kristiansson <[email protected]>
> Signed-off-by: Stefan Kristiansson <[email protected]>
> Signed-off-by: Peter De Schrijver <[email protected]>
> ---
> .../nvidia,tegra264-bpmp-shmem.yaml | 45 +++++++++++++++++++
> 1 file changed, 45 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.yaml
>
My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):
yamllint warnings/errors:
dtschema/dtc warnings/errors:
Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.example.dts:21.16-50: Warning (reg_format): /example-0/reserved-memory/shmem@f1be0000:reg: property has invalid length (16 bytes) (#address-cells == 2, #size-cells == 1)
Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.example.dtb: Warning (pci_device_reg): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.example.dtb: Warning (pci_device_bus_num): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.example.dtb: Warning (simple_bus_reg): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.example.dtb: Warning (i2c_bus_reg): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.example.dtb: Warning (spi_bus_reg): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.example.dts:19.47-23.14: Warning (avoid_default_addr_size): /example-0/reserved-memory/shmem@f1be0000: Relying on default #address-cells value
Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.example.dts:19.47-23.14: Warning (avoid_default_addr_size): /example-0/reserved-memory/shmem@f1be0000: Relying on default #size-cells value
Documentation/devicetree/bindings/reserved-memory/nvidia,tegra264-bpmp-shmem.example.dtb: Warning (unique_unit_address_if_enabled): Failed prerequisite 'avoid_default_addr_size'
See https://patchwork.ozlabs.org/patch/1779405
This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.
If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:
pip3 install dtschema --upgrade
Please check and re-submit.