Merge tag 'mtk-soc-for-v6.13' of https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux into arm/drivers

MediaTek soc driver updates for v6.13

This adds support for the MT8188 SoC in the MediaTek Regulator
Coupler driver, allowing stable GPU DVFS on this chip;

Moreover, this adds a new MediaTek DVFS Resource Collector (DVFSRC)
driver, allowing to enable other drivers (interconnect, regulator)
which can now communicate with the DVFSRC hardware.

Last but not least, this includes some cleanups for the CMDQ Helper
and MediaTek SVS drivers.

* tag 'mtk-soc-for-v6.13' of https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux:
  soc: mediatek: mtk-svs: Call of_node_put(np) only once in svs_get_subsys_device()
  soc: mediatek: mediatek-regulator-coupler: Support mt8188
  soc: mediatek: mtk-cmdq: Move cmdq_instruction init to declaration
  soc: mediatek: mtk-cmdq: Move mask build and append to function
  soc: mediatek: Add MediaTek DVFS Resource Collector (DVFSRC) driver
  dt-bindings: soc: mediatek: Add DVFSRC bindings for MT8183 and MT8195

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnd Bergmann <[email protected]>

Author: arndb

Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml

@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/mediatek/mediatek,mt8183-dvfsrc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek Dynamic Voltage and Frequency Scaling Resource Collector (DVFSRC)
+
+description:
+  The Dynamic Voltage and Frequency Scaling Resource Collector (DVFSRC) is a
+  Hardware module used to collect all the requests from both software and the
+  various remote processors embedded into the SoC and decide about a minimum
+  operating voltage and a minimum DRAM frequency to fulfill those requests in
+  an effort to provide the best achievable performance per watt.
+  This hardware IP is capable of transparently performing direct register R/W
+  on all of the DVFSRC-controlled regulators and SoC bandwidth knobs.
+
+maintainers:
+  - AngeloGioacchino Del Regno <[email protected]>
+  - Henry Chen <[email protected]>
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - mediatek,mt8183-dvfsrc
+          - mediatek,mt8195-dvfsrc
+      - items:
+          - const: mediatek,mt8192-dvfsrc
+          - const: mediatek,mt8195-dvfsrc
+
+  reg:
+    maxItems: 1
+    description: DVFSRC common register address and length.
+
+  regulators:
+    type: object
+    $ref: /schemas/regulator/mediatek,mt6873-dvfsrc-regulator.yaml#
+
+  interconnect:
+    type: object
+    $ref: /schemas/interconnect/mediatek,mt8183-emi.yaml#
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        system-controller@10012000 {
+            compatible = "mediatek,mt8195-dvfsrc";
+            reg = <0 0x10012000 0 0x1000>;
+
+            regulators {
+                compatible = "mediatek,mt8195-dvfsrc-regulator";
+
+                dvfsrc_vcore: dvfsrc-vcore {
+                        regulator-name = "dvfsrc-vcore";
+                        regulator-min-microvolt = <550000>;
+                        regulator-max-microvolt = <750000>;
+                        regulator-always-on;
+                };
+
+                dvfsrc_vscp: dvfsrc-vscp {
+                        regulator-name = "dvfsrc-vscp";
+                        regulator-min-microvolt = <550000>;
+                        regulator-max-microvolt = <750000>;
+                        regulator-always-on;
+                };
+            };
+
+            emi_icc: interconnect {
+                compatible = "mediatek,mt8195-emi";
+                #interconnect-cells = <1>;
+            };
+        };
+    };

drivers/soc/mediatek/Kconfig

@@ -26,6 +26,17 @@ config MTK_DEVAPC
 	  The violation information is logged for further analysis or
 	  countermeasures.
 
+config MTK_DVFSRC
+	tristate "MediaTek DVFSRC Support"
+	depends on ARCH_MEDIATEK
+	help
+	  Say yes here to add support for the MediaTek Dynamic Voltage
+	  and Frequency Scaling Resource Collector (DVFSRC): a HW
+	  IP found on many MediaTek SoCs, which is responsible for
+	  collecting DVFS requests from various SoC IPs, other than
+	  software, and performing bandwidth scaling to provide the
+	  best achievable performance-per-watt.
+
 config MTK_INFRACFG
 	bool "MediaTek INFRACFG Support"
 	select REGMAP

drivers/soc/mediatek/Makefile

@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_MTK_CMDQ) += mtk-cmdq-helper.o
 obj-$(CONFIG_MTK_DEVAPC) += mtk-devapc.o
+obj-$(CONFIG_MTK_DVFSRC) += mtk-dvfsrc.o
 obj-$(CONFIG_MTK_INFRACFG) += mtk-infracfg.o
 obj-$(CONFIG_MTK_PMIC_WRAP) += mtk-pmic-wrap.o
 obj-$(CONFIG_MTK_REGULATOR_COUPLER) += mtk-regulator-coupler.o