Re: [PATCH 1/6] dt-bindings: soc: qcom: add On Chip MEMory (OCMEM) bindings

Rob Herring
2019-06-17T14:30:03Z

On Sun, Jun 16, 2019 at 7:29 AM Brian Masney <masneyb@onstation.org> wrote:
>
> Add device tree bindings for the On Chip Memory (OCMEM) that is present
> on some Qualcomm Snapdragon SoCs.
>
> Signed-off-by: Brian Masney <masneyb@onstation.org>
> ---
> .../bindings/soc/qcom/qcom,ocmem.yaml | 66 +++++++++++++++++++

.../bindings/sram/

> 1 file changed, 66 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,ocmem.yaml
>
> diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,ocmem.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,ocmem.yaml
> new file mode 100644
> index 000000000000..5e3ae6311a16
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,ocmem.yaml
> @@ -0,0 +1,66 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/qcom/qcom,ocmem.yaml#

schemas/sram/

> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: On Chip Memory (OCMEM) that is present on some Qualcomm Snapdragon SoCs.
> +
> +maintainers:
> + - Brian Masney <masneyb@onstation.org>
> +
> +description: |
> + The On Chip Memory (OCMEM) allocator allows various clients to allocate memory

Is there something in the h/w that's an allocator? That's typically a
s/w thing that has nothing to do with h/w description.

> + from OCMEM based on performance, latency and power requirements. This is
> + typically used by the GPU, camera/video, and audio components on some
> + Snapdragon SoCs.
> +
> +properties:
> + compatible:
> + const: qcom,ocmem-msm8974

What Bjorn said...

> +
> + reg:
> + items:
> + - description: Control registers
> + - description: OCMEM address range
> +
> + reg-names:
> + items:
> + - const: ocmem_ctrl_physical
> + - const: ocmem_physical

'ctrl' and 'mem' would be sufficient.

> +
> + clocks:
> + items:
> + - description: Core clock
> + - description: Interface clock
> +
> + clock-names:
> + items:
> + - const: core
> + - const: iface
> +
> +required:
> + - compatible
> + - reg
> + - reg-names
> + - clocks
> + - clock-names
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/qcom,rpmcc.h>
> + #include <dt-bindings/clock/qcom,mmcc-msm8974.h>
> +
> + ocmem: ocmem@fdd00000 {
> + compatible = "qcom,ocmem-msm8974";
> +
> + reg = <0xfdd00000 0x2000>,
> + <0xfec00000 0x180000>;
> + reg-names = "ocmem_ctrl_physical",
> + "ocmem_physical";
> +
> + clocks = <&rpmcc RPM_SMD_OCMEMGX_CLK>,
> + <&mmcc OCMEMCX_OCMEMNOC_CLK>;
> + clock-names = "core",
> + "iface";
> + };
> --
> 2.20.1
>