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SubjectRe: [PATCH v2 1/2] dt-bindings: interconnect: Add OSM L3 DT bindings
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Hi Sibi,

On 8/21/19 02:11, Sibi Sankar wrote:
> Add bindings for Operating State Manager (OSM) L3 interconnect provider
> on SDM845 SoCs.
>
> Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
> ---
> .../bindings/interconnect/qcom,osm-l3.yaml | 56 +++++++++++++++++++
> .../dt-bindings/interconnect/qcom,osm-l3.h | 12 ++++
> 2 files changed, 68 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml
> create mode 100644 include/dt-bindings/interconnect/qcom,osm-l3.h
>
> diff --git a/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml b/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml
> new file mode 100644
> index 0000000000000..dab2b6875ab27
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/interconnect/qcom,osm-l3.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Operating State Manager (OSM) L3 Interconnect Provider
> +
> +maintainers:
> + - Sibi Sankar <sibis@codeaurora.org>
> +
> +description:
> + L3 cache bandwidth requirements on Qualcomm SoCs is serviced by the OSM.
> + The OSM L3 interconnect provider aggregates the L3 bandwidth requests
> + from CPU/GPU and relays it to the OSM.
> +
> +properties:
> + compatible:
> + const: "qcom,sdm845-osm-l3"
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + items:
> + - description: xo clock
> + - description: alternate clock
> +
> + clock-names:
> + items:
> + - const: xo
> + - const: alternate
> +
> + '#interconnect-cells':
> + const: 1
> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - clock-names
> + - '#interconnect-cells'
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + osm_l3: interconnect@17d41000 {
> + compatible = "qcom,sdm845-osm-l3";
> + reg = <0x17d41000 0x1400>;
> +
> + clocks = <&rpmhcc 0>, <&gcc 165>;
> + clock-names = "xo", "alternate";
> +
> + #interconnect-cells = <1>;
> + };

Are we going to do the bandwidth scaling from some cpufreq driver? Under which
DT node will we put the "interconnects" property?

Thanks,
Georgi

> diff --git a/include/dt-bindings/interconnect/qcom,osm-l3.h b/include/dt-bindings/interconnect/qcom,osm-l3.h
> new file mode 100644
> index 0000000000000..54858ff7674d7
> --- /dev/null
> +++ b/include/dt-bindings/interconnect/qcom,osm-l3.h
> @@ -0,0 +1,12 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (C) 2019 The Linux Foundation. All rights reserved.
> + */
> +
> +#ifndef __DT_BINDINGS_INTERCONNECT_QCOM_OSM_L3_H
> +#define __DT_BINDINGS_INTERCONNECT_QCOM_OSM_L3_H
> +
> +#define MASTER_OSM_L3_APPS 0
> +#define SLAVE_OSM_L3 1
> +
> +#endif
>

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