Add bindings for Qualcomm MSM8976 Network-On-Chip interconnect devices.

Signed-off-by: Adam Skladowski <a39.skl@gmail.com>
---
 .../bindings/interconnect/qcom,msm8976.yaml   | 107 ++++++++++++++++++
 .../dt-bindings/interconnect/qcom,msm8976.h   |  97 ++++++++++++++++
 2 files changed, 204 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interconnect/qcom,msm8976.yaml
 create mode 100644 include/dt-bindings/interconnect/qcom,msm8976.h

diff --git a/Documentation/devicetree/bindings/interconnect/qcom,msm8976.yaml b/Documentation/devicetree/bindings/interconnect/qcom,msm8976.yaml
new file mode 100644
index 000000000000..bc9d08443e7c
--- /dev/null
+++ b/Documentation/devicetree/bindings/interconnect/qcom,msm8976.yaml
@@ -0,0 +1,107 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interconnect/qcom,msm8976.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm MSM8976 Network-On-Chip interconnect
+
+maintainers:
+  - Konrad Dybcio <konradybcio@kernel.org>
+
+description: |
+  The Qualcomm MSM8976 interconnect providers support adjusting the
+  bandwidth requirements between the various NoC fabrics.
+
+properties:
+  compatible:
+    enum:
+      - qcom,msm8976-bimc
+      - qcom,msm8976-pcnoc
+      - qcom,msm8976-snoc
+
+  reg:
+    maxItems: 1
+
+  clock-names:
+    minItems: 1
+    maxItems: 2
+
+  clocks:
+    minItems: 1
+    maxItems: 2
+
+patternProperties:
+  '^interconnect-[a-z0-9\-]+$':
+    type: object
+    $ref: qcom,rpm-common.yaml#
+    description:
+      The interconnect providers do not have a separate QoS register space,
+      but share parent's space.
+
+    allOf:
+      - $ref: qcom,rpm-common.yaml#
+
+    properties:
+      compatible:
+        const: qcom,msm8976-snoc-mm
+
+    required:
+      - compatible
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+allOf:
+  - $ref: qcom,rpm-common.yaml#
+  - if:
+      properties:
+        compatible:
+          const: qcom,msm8976-snoc
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: IPA clock from RPMCC
+        clock-names:
+          const: ipa
+
+      required:
+        - clocks
+        - clock-names
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,rpmcc.h>
+    #include <dt-bindings/interconnect/qcom,rpm-icc.h>
+
+    bimc: interconnect@400000 {
+        compatible = "qcom,msm8976-bimc";
+        reg = <0x00400000 0x62000>;
+        #interconnect-cells = <2>;
+    };
+
+    pcnoc: interconnect@500000 {
+        compatible = "qcom,msm8976-pcnoc";
+        reg = <0x00500000 0x14000>;
+        #interconnect-cells = <2>;
+    };
+
+    snoc: interconnect@580000 {
+        compatible = "qcom,msm8976-snoc";
+        reg = <0x00580000 0x1a000>;
+        clocks =  <&rpmcc RPM_SMD_IPA_CLK>;
+        clock-names = "ipa";
+        #interconnect-cells = <2>;
+
+          snoc_mm: interconnect-snoc {
+              compatible = "qcom,msm8976-snoc-mm";
+              #interconnect-cells = <2>;
+          };
+    };
diff --git a/include/dt-bindings/interconnect/qcom,msm8976.h b/include/dt-bindings/interconnect/qcom,msm8976.h
new file mode 100644
index 000000000000..4ea90f22320e
--- /dev/null
+++ b/include/dt-bindings/interconnect/qcom,msm8976.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Qualcomm MSM8976 interconnect IDs
+ */
+
+#ifndef __DT_BINDINGS_INTERCONNECT_QCOM_MSM8976_H
+#define __DT_BINDINGS_INTERCONNECT_QCOM_MSM8976_H
+
+/* BIMC fabric */
+#define MAS_APPS_PROC		0
+#define MAS_SMMNOC_BIMC	        1
+#define MAS_SNOC_BIMC		2
+#define MAS_TCU_0		3
+#define SLV_EBI		        4
+#define SLV_BIMC_SNOC		5
+
+/* PCNOC fabric */
+#define MAS_USB_HS2		0
+#define MAS_BLSP_1		1
+#define MAS_USB_HS1		2
+#define MAS_BLSP_2		3
+#define MAS_CRYPTO		4
+#define MAS_SDCC_1		5
+#define MAS_SDCC_2		6
+#define MAS_SDCC_3		7
+#define MAS_SNOC_PCNOC		8
+#define MAS_LPASS_AHB		9
+#define MAS_SPDM		10
+#define MAS_DEHR		11
+#define MAS_XM_USB_HS1		12
+#define PCNOC_M_0		13
+#define PCNOC_M_1		14
+#define PCNOC_INT_0		15
+#define PCNOC_INT_1		16
+#define PCNOC_INT_2		17
+#define PCNOC_S_1		18
+#define PCNOC_S_2		19
+#define PCNOC_S_3		20
+#define PCNOC_S_4		21
+#define PCNOC_S_8		22
+#define PCNOC_S_9		23
+#define SLV_TCSR		24
+#define SLV_TLMM		25
+#define SLV_CRYPTO_0_CFG	26
+#define SLV_MESSAGE_RAM	        27
+#define SLV_PDM		        28
+#define SLV_PRNG		29
+#define SLV_PMIC_ARB		30
+#define SLV_SNOC_CFG		31
+#define SLV_DCC_CFG		32
+#define SLV_CAMERA_SS_CFG	33
+#define SLV_DISP_SS_CFG	        34
+#define SLV_VENUS_CFG		35
+#define SLV_SDCC_1		36
+#define SLV_BLSP_1		37
+#define SLV_USB_HS		38
+#define SLV_SDCC_3		39
+#define SLV_SDCC_2		40
+#define SLV_GPU_CFG		41
+#define SLV_USB_HS2		42
+#define SLV_BLSP_2		43
+#define SLV_PCNOC_SNOC		44
+
+/* SNOC fabric */
+#define MAS_QDSS_BAM		0
+#define MAS_BIMC_SNOC		1
+#define MAS_PCNOC_SNOC		2
+#define MAS_QDSS_ETR		3
+#define MAS_LPASS_PROC		4
+#define MAS_IPA		        5
+#define QDSS_INT		6
+#define SNOC_INT_0		7
+#define SNOC_INT_1		8
+#define SNOC_INT_2		9
+#define SLV_KPSS_AHB		10
+#define SLV_SNOC_BIMC		11
+#define SLV_IMEM		12
+#define SLV_SNOC_PCNOC		13
+#define SLV_QDSS_STM		14
+#define SLV_CATS_0		15
+#define SLV_CATS_1		16
+#define SLV_LPASS		17
+
+/* SNOC-MM fabric */
+#define MAS_JPEG		0
+#define MAS_OXILI		1
+#define MAS_MDP0		2
+#define MAS_MDP1		3
+#define MAS_VENUS_0		4
+#define MAS_VENUS_1		5
+#define MAS_VFE_0		6
+#define MAS_VFE_1		7
+#define MAS_CPP		        8
+#define MM_INT_0		9
+#define SLV_SMMNOC_BIMC		10
+
+#endif /* __DT_BINDINGS_INTERCONNECT_QCOM_MSM8976_H */
-- 
2.45.1

On 09/06/2024 20:20, Adam Skladowski wrote:
> Add bindings for Qualcomm MSM8976 Network-On-Chip interconnect devices.
> 
> Signed-off-by: Adam Skladowski <a39.skl@gmail.com>

A nit, subject: drop second/last, redundant "DT bindings". The
"dt-bindings" prefix is already stating that these are bindings.
See also:
https://elixir.bootlin.com/linux/v6.7-rc8/source/Documentation/devicetree/bindings/submitting-patches.rst#L18

> ---
>  .../bindings/interconnect/qcom,msm8976.yaml   | 107 ++++++++++++++++++
>  .../dt-bindings/interconnect/qcom,msm8976.h   |  97 ++++++++++++++++
>  2 files changed, 204 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/interconnect/qcom,msm8976.yaml
>  create mode 100644 include/dt-bindings/interconnect/qcom,msm8976.h
> 
> diff --git a/Documentation/devicetree/bindings/interconnect/qcom,msm8976.yaml b/Documentation/devicetree/bindings/interconnect/qcom,msm8976.yaml
> new file mode 100644
> index 000000000000..bc9d08443e7c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interconnect/qcom,msm8976.yaml
> @@ -0,0 +1,107 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/interconnect/qcom,msm8976.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm MSM8976 Network-On-Chip interconnect
> +
> +maintainers:
> +  - Konrad Dybcio <konradybcio@kernel.org>
> +
> +description: |

Do not need '|' unless you need to preserve formatting.

> +  The Qualcomm MSM8976 interconnect providers support adjusting the
> +  bandwidth requirements between the various NoC fabrics.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - qcom,msm8976-bimc
> +      - qcom,msm8976-pcnoc
> +      - qcom,msm8976-snoc
> +
> +  reg:
> +    maxItems: 1
> +
> +  clock-names:
> +    minItems: 1
> +    maxItems: 2
> +
> +  clocks:
> +    minItems: 1
> +    maxItems: 2

I know that other qcom bindings use that order (clock-names -> clocks),
but at least for new bindings let's keep it more logical, so please
first clocks then clock-names.

> +
> +patternProperties:
> +  '^interconnect-[a-z0-9\-]+$':
> +    type: object
> +    $ref: qcom,rpm-common.yaml#
> +    description:
> +      The interconnect providers do not have a separate QoS register space,
> +      but share parent's space.
> +
> +    allOf:
> +      - $ref: qcom,rpm-common.yaml#

Drop both lines.

> +
> +    properties:
> +      compatible:
> +        const: qcom,msm8976-snoc-mm
> +
> +    required:
> +      - compatible
> +
> +    unevaluatedProperties: false

Put it after $ref (before description).

> +
> +required:
> +  - compatible
> +  - reg
> +
> +unevaluatedProperties: false

This goes after entire allOf section

> +
> +allOf:
> +  - $ref: qcom,rpm-common.yaml#
> +  - if:
> +      properties:
> +        compatible:
> +          const: qcom,msm8976-snoc
> +
> +    then:
> +      properties:
> +        clocks:
> +          items:
> +            - description: IPA clock from RPMCC
> +        clock-names:
> +          const: ipa
> +
> +      required:
> +        - clocks
> +        - clock-names

Then why do you have two items? And what with clocks for other variants?
This is supposed to be fixed/specific for each device/variant.


> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/qcom,rpmcc.h>
> +    #include <dt-bindings/interconnect/qcom,rpm-icc.h>
> +
> +    bimc: interconnect@400000 {
> +        compatible = "qcom,msm8976-bimc";
> +        reg = <0x00400000 0x62000>;
> +        #interconnect-cells = <2>;
> +    };
> +
> +    pcnoc: interconnect@500000 {
> +        compatible = "qcom,msm8976-pcnoc";
> +        reg = <0x00500000 0x14000>;
> +        #interconnect-cells = <2>;
> +    };

Drop both nodes. The node below is enough as an example.


Best regards,
Krzysztof