Merge Qualcomm MSM timer bindings into watchdog, because the timer
compatibles are already included here and the hardware is quite similar.
While converting the MSM timer bindings, adjust clock-frequency
property to take only one frequency, instead of two, because:
1. DT schema does not allow to frequencies,
2. The Linux timer driver reads only first frequency.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
---
Changes since v1:
1. Add tag.
2. Correct clock-frequency description (Rob).
---
.../bindings/timer/qcom,msm-timer.txt | 47 ------------------
.../bindings/watchdog/qcom-wdt.yaml | 49 +++++++++++++++++++
2 files changed, 49 insertions(+), 47 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/timer/qcom,msm-timer.txt
diff --git a/Documentation/devicetree/bindings/timer/qcom,msm-timer.txt b/Documentation/devicetree/bindings/timer/qcom,msm-timer.txt
deleted file mode 100644
index 5e10c345548f..000000000000
--- a/Documentation/devicetree/bindings/timer/qcom,msm-timer.txt
+++ /dev/null
@@ -1,47 +0,0 @@
-* MSM Timer
-
-Properties:
-
-- compatible : Should at least contain "qcom,msm-timer". More specific
- properties specify which subsystem the timers are paired with.
-
- "qcom,kpss-timer" - krait subsystem
- "qcom,scss-timer" - scorpion subsystem
-
-- interrupts : Interrupts for the debug timer, the first general purpose
- timer, and optionally a second general purpose timer, and
- optionally as well, 2 watchdog interrupts, in that order.
-
-- reg : Specifies the base address of the timer registers.
-
-- clocks: Reference to the parent clocks, one per output clock. The parents
- must appear in the same order as the clock names.
-
-- clock-names: The name of the clocks as free-form strings. They should be in
- the same order as the clocks.
-
-- clock-frequency : The frequency of the debug timer and the general purpose
- timer(s) in Hz in that order.
-
-Optional:
-
-- cpu-offset : per-cpu offset used when the timer is accessed without the
- CPU remapping facilities. The offset is
- cpu-offset + (0x10000 * cpu-nr).
-
-Example:
-
- timer@200a000 {
- compatible = "qcom,scss-timer", "qcom,msm-timer";
- interrupts = <1 1 0x301>,
- <1 2 0x301>,
- <1 3 0x301>,
- <1 4 0x301>,
- <1 5 0x301>;
- reg = <0x0200a000 0x100>;
- clock-frequency = <19200000>,
- <32768>;
- clocks = <&sleep_clk>;
- clock-names = "sleep";
- cpu-offset = <0x40000>;
- };
diff --git a/Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml b/Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml
index b7fc57f4800e..837ce9112071 100644
--- a/Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml
+++ b/Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml
@@ -10,6 +10,9 @@ maintainers:
- Sai Prakash Ranjan <saiprakash.ranjan@xxxxxxxxxxxxxx>
properties:
+ $nodename:
+ pattern: "^(watchdog|timer)@[0-9a-f]+$"
+
compatible:
oneOf:
- items:
@@ -48,6 +51,20 @@ properties:
clocks:
maxItems: 1
+ clock-names:
+ items:
+ - const: sleep
+
+ clock-frequency:
+ description:
+ The frequency of the general purpose timer in Hz.
+
+ cpu-offset:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Per-CPU offset used when the timer is accessed without the CPU remapping
+ facilities. The offset is cpu-offset + (0x10000 * cpu-nr).
+
interrupts:
minItems: 1
maxItems: 5
@@ -67,12 +84,27 @@ allOf:
const: qcom,kpss-wdt
then:
properties:
+ clock-frequency: false
+ cpu-offset: false
interrupts:
minItems: 1
items:
- description: Bark
- description: Bite
+ else:
+ properties:
+ interrupts:
+ minItems: 3
+ items:
+ - description: Debug
+ - description: First general purpose timer
+ - description: Second general purpose timer
+ - description: First watchdog
+ - description: Second watchdog
+ required:
+ - clock-frequency
+
unevaluatedProperties: false
examples:
@@ -86,3 +118,20 @@ examples:
interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
timeout-sec = <10>;
};
+
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ watchdog@200a000 {
+ compatible = "qcom,kpss-wdt-ipq8064", "qcom,kpss-timer", "qcom,msm-timer";
+ interrupts = <GIC_PPI 1 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>,
+ <GIC_PPI 2 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>,
+ <GIC_PPI 3 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>,
+ <GIC_PPI 4 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>,
+ <GIC_PPI 5 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>;
+ reg = <0x0200a000 0x100>;
+ clock-frequency = <25000000>;
+ clocks = <&sleep_clk>;
+ clock-names = "sleep";
+ cpu-offset = <0x80000>;
+ };
--
2.34.1
