| Message ID | 20230113103346.29381-7-krzysztof.kozlowski@linaro.org (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | watchdog: dt-bindings: rework/fix qcom-wdt | expand |
On Fri, Jan 13, 2023 at 11:33:45AM +0100, Krzysztof Kozlowski wrote: > 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@linaro.org> > Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> > Reviewed-by: Guenter Roeck <linux@roeck-us.net> > --- > > 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@codeaurora.org> > > 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 >
On Fri, 13 Jan 2023 11:33:45 +0100, Krzysztof Kozlowski wrote: > 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@linaro.org> > Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> > > --- > > 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 > Reviewed-by: Rob Herring <robh@kernel.org>
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@codeaurora.org> 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>; + };