Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 151 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/timer/samsung,exynos4210-mct.yaml b/Documentation/devicetree/bindings/timer/samsung,exynos4210-mct.yaml
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index 000000000..f11cbc7cc
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+++ b/Documentation/devicetree/bindings/timer/samsung,exynos4210-mct.yaml
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+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/samsung,exynos4210-mct.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos SoC Multi Core Timer (MCT)
+
+maintainers:
+  - Krzysztof Kozlowski <krzk@kernel.org>
+
+description: |+
+  The Samsung's Multi Core Timer (MCT) module includes two main blocks, the
+  global timer and CPU local timers. The global timer is a 64-bit free running
+  up-counter and can generate 4 interrupts when the counter reaches one of the
+  four preset counter values. The CPU local timers are 32-bit free running
+  down-counters and generate an interrupt when the counter expires. There is
+  one CPU local timer instantiated in MCT for every CPU in the system.
+
+properties:
+  compatible:
+    enum:
+      - samsung,exynos4210-mct
+      - samsung,exynos4412-mct
+
+  clocks:
+    minItems: 2
+    maxItems: 2
+
+  clock-names:
+    items:
+      - pattern: "^(fin_pll|mct)$"
+      - pattern: "^(fin_pll|mct)$"
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    description: |
+      Interrupts should be put in specific order. This is, the local timer
+      interrupts should be specified after the four global timer interrupts
+      have been specified:
+      0: Global Timer Interrupt 0
+      1: Global Timer Interrupt 1
+      2: Global Timer Interrupt 2
+      3: Global Timer Interrupt 3
+      4: Local Timer Interrupt 0
+      5: Local Timer Interrupt 1
+      6: ..
+      7: ..
+      i: Local Timer Interrupt n
+      For MCT block that uses a per-processor interrupt for local timers, such
+      as ones compatible with "samsung,exynos4412-mct", only one local timer
+      interrupt might be specified, meaning that all local timers use the same
+      per processor interrupt.
+    minItems: 5               # 4 Global + 1 local
+    maxItems: 20              # 4 Global + 16 local
+
+required:
+  - compatible
+  - clock-names
+  - clocks
+  - interrupts
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    // In this example, the IP contains two local timers, using separate
+    // interrupts, so two local timer interrupts have been specified,
+    // in addition to four global timer interrupts.
+    #include <dt-bindings/clock/exynos4.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    timer@10050000 {
+        compatible = "samsung,exynos4210-mct";
+        reg = <0x10050000 0x800>;
+        clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MCT>;
+        clock-names = "fin_pll", "mct";
+
+        interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+    };
+
+  - |
+    // In this example, the timer interrupts are connected to two separate
+    // interrupt controllers. Hence, an interrupts-extended is needed.
+    #include <dt-bindings/clock/exynos4.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    timer@101c0000 {
+        compatible = "samsung,exynos4210-mct";
+        reg = <0x101C0000 0x800>;
+        clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MCT>;
+        clock-names = "fin_pll", "mct";
+
+        interrupts-extended = <&gic GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
+                              <&gic GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
+                              <&combiner 12 6>,
+                              <&combiner 12 7>,
+                              <&gic GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>,
+                              <&gic GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+    };
+
+  - |
+    // In this example, the IP contains four local timers, but using
+    // a per-processor interrupt to handle them. Only one first local
+    // interrupt is specified.
+    #include <dt-bindings/clock/exynos4.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    timer@10050000 {
+        compatible = "samsung,exynos4412-mct";
+        reg = <0x10050000 0x800>;
+        clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MCT>;
+        clock-names = "fin_pll", "mct";
+
+        interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_PPI 42 IRQ_TYPE_LEVEL_HIGH>;
+    };
+
+  - |
+    // In this example, the IP contains four local timers, but using
+    // a per-processor interrupt to handle them. All the local timer
+    // interrupts are specified.
+    #include <dt-bindings/clock/exynos4.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    timer@10050000 {
+        compatible = "samsung,exynos4412-mct";
+        reg = <0x10050000 0x800>;
+        clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MCT>;
+        clock-names = "fin_pll", "mct";
+
+        interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_PPI 42 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_PPI 42 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_PPI 42 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_PPI 42 IRQ_TYPE_LEVEL_HIGH>;
+    };