From: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com>
RTC tracks clock time during system suspend and it is used as a wakeup
source on S32G2/S32G3 architecture.
RTC from S32G2/S32G3 is not battery-powered and it is not kept alive
during system reset.
Co-developed-by: Bogdan-Gabriel Roman <bogdan-gabriel.roman@nxp.com>
Signed-off-by: Bogdan-Gabriel Roman <bogdan-gabriel.roman@nxp.com>
Co-developed-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>
Signed-off-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>
Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com>
---
.../devicetree/bindings/rtc/nxp,s32g-rtc.yaml | 78 +++++++++++++++++++
1 file changed, 78 insertions(+)
create mode 100644 Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml
diff --git a/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml b/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml
new file mode 100644
index 000000000000..231811579e1b
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml
@@ -0,0 +1,78 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/nxp,s32g-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP S32G2/S32G3 Real Time Clock (RTC)
+
+maintainers:
+ - Bogdan Hamciuc <bogdan.hamciuc@nxp.com>
+ - Ciprian Marian Costea <ciprianmarian.costea@nxp.com>
+
+description:
+ RTC hardware module present on S32G2/S32G3 SoCs is used as a wakeup
+ source. It is not kept alive during system reset and it is not
+ battery-powered.
+
+ RTC hardware module contains a hardware mux with 4 entries/inputs
+ for clock source selection. On S32G2/S32G3 SoCs, this mux is used
+ to select between a clock source for runtime which brings more
+ precision but is not available during system standby, and a clock
+ source for suspend state.
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - nxp,s32g2-rtc
+ - items:
+ - const: nxp,s32g3-rtc
+ - const: nxp,s32g2-rtc
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ minItems: 2
+ items:
+ - description: ipg clock drives the access to the
+ RTC iomapped registers
+ - description: Runtime clock source. It must be a clock
+ source for the RTC module. It will be disabled by hardware
+ during Standby/Suspend.
+ - description: Standby/Suspend clock source. It is optional
+ and can be used in case the RTC will continue ticking during
+ platform/system suspend.
+
+ clock-names:
+ minItems: 2
+ maxItems: 3
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ rtc@40060000 {
+ compatible = "nxp,s32g3-rtc",
+ "nxp,s32g2-rtc";
+ reg = <0x40060000 0x1000>;
+ interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks 54>, <&clks 56>, <&clks 55>;
+ clock-names = "ipg",
+ "rtc_runtime_s2",
+ "rtc_standby_s0";
+ };
--
2.45.2On Mon, Nov 11, 2024 at 03:59:37PM +0200, Ciprian Costea wrote: > From: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com> > > RTC tracks clock time during system suspend and it is used as a wakeup > source on S32G2/S32G3 architecture. > > RTC from S32G2/S32G3 is not battery-powered and it is not kept alive > during system reset. > > Co-developed-by: Bogdan-Gabriel Roman <bogdan-gabriel.roman@nxp.com> > Signed-off-by: Bogdan-Gabriel Roman <bogdan-gabriel.roman@nxp.com> > Co-developed-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com> > Signed-off-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com> > Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com> > --- > .../devicetree/bindings/rtc/nxp,s32g-rtc.yaml | 78 +++++++++++++++++++ > 1 file changed, 78 insertions(+) > create mode 100644 Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml > > diff --git a/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml b/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml > new file mode 100644 > index 000000000000..231811579e1b > --- /dev/null > +++ b/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml > @@ -0,0 +1,78 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/rtc/nxp,s32g-rtc.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: NXP S32G2/S32G3 Real Time Clock (RTC) > + > +maintainers: > + - Bogdan Hamciuc <bogdan.hamciuc@nxp.com> > + - Ciprian Marian Costea <ciprianmarian.costea@nxp.com> > + > +description: > + RTC hardware module present on S32G2/S32G3 SoCs is used as a wakeup > + source. It is not kept alive during system reset and it is not > + battery-powered. > + > + RTC hardware module contains a hardware mux with 4 entries/inputs > + for clock source selection. On S32G2/S32G3 SoCs, this mux is used > + to select between a clock source for runtime which brings more > + precision but is not available during system standby, and a clock > + source for suspend state. > + > +properties: > + compatible: > + oneOf: > + - enum: > + - nxp,s32g2-rtc > + - items: > + - const: nxp,s32g3-rtc > + - const: nxp,s32g2-rtc > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + clocks: > + minItems: 2 > + items: > + - description: ipg clock drives the access to the > + RTC iomapped registers > + - description: Runtime clock source. It must be a clock > + source for the RTC module. It will be disabled by hardware > + during Standby/Suspend. > + - description: Standby/Suspend clock source. It is optional > + and can be used in case the RTC will continue ticking during > + platform/system suspend. > + > + clock-names: > + minItems: 2 > + maxItems: 3 You actually have to provide the clock-names, otherwise you can't rely on them
On Mon, Nov 11, 2024 at 08:05:50PM +0000, Conor Dooley wrote: > On Mon, Nov 11, 2024 at 03:59:37PM +0200, Ciprian Costea wrote: > > + clock-names: > > + minItems: 2 > > + maxItems: 3 > > You actually have to provide the clock-names, otherwise you can't rely > on them Oh, and drop the "rtc_" prefix while you're at it.
On 11/11/2024 10:06 PM, Conor Dooley wrote: > On Mon, Nov 11, 2024 at 08:05:50PM +0000, Conor Dooley wrote: >> On Mon, Nov 11, 2024 at 03:59:37PM +0200, Ciprian Costea wrote: >>> + clock-names: >>> + minItems: 2 >>> + maxItems: 3 >> >> You actually have to provide the clock-names, otherwise you can't rely >> on them > > Oh, and drop the "rtc_" prefix while you're at it. Hi Conor, Thanks for taking time and reviewing this patchset. I will list the actual clock-names and remove the 'rtc_' prefix in V5. Best Regards, Ciprian
On Mon, Nov 11, 2024 at 03:59:37PM +0200, Ciprian Costea wrote:
> From: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com>
>
> RTC tracks clock time during system suspend and it is used as a wakeup
> source on S32G2/S32G3 architecture.
>
> RTC from S32G2/S32G3 is not battery-powered and it is not kept alive
> during system reset.
>
> Co-developed-by: Bogdan-Gabriel Roman <bogdan-gabriel.roman@nxp.com>
> Signed-off-by: Bogdan-Gabriel Roman <bogdan-gabriel.roman@nxp.com>
> Co-developed-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>
> Signed-off-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>
> Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com>
> ---
> .../devicetree/bindings/rtc/nxp,s32g-rtc.yaml | 78 +++++++++++++++++++
> 1 file changed, 78 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml
>
> diff --git a/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml b/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml
> new file mode 100644
> index 000000000000..231811579e1b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml
> @@ -0,0 +1,78 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/rtc/nxp,s32g-rtc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NXP S32G2/S32G3 Real Time Clock (RTC)
> +
> +maintainers:
> + - Bogdan Hamciuc <bogdan.hamciuc@nxp.com>
> + - Ciprian Marian Costea <ciprianmarian.costea@nxp.com>
> +
> +description:
> + RTC hardware module present on S32G2/S32G3 SoCs is used as a wakeup
> + source. It is not kept alive during system reset and it is not
> + battery-powered.
> +
> + RTC hardware module contains a hardware mux with 4 entries/inputs
> + for clock source selection. On S32G2/S32G3 SoCs, this mux is used
> + to select between a clock source for runtime which brings more
> + precision but is not available during system standby, and a clock
> + source for suspend state.
> +
> +properties:
> + compatible:
> + oneOf:
> + - enum:
> + - nxp,s32g2-rtc
> + - items:
> + - const: nxp,s32g3-rtc
> + - const: nxp,s32g2-rtc
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + minItems: 2
> + items:
> + - description: ipg clock drives the access to the
> + RTC iomapped registers
> + - description: Runtime clock source. It must be a clock
> + source for the RTC module. It will be disabled by hardware
> + during Standby/Suspend.
> + - description: Standby/Suspend clock source. It is optional
> + and can be used in case the RTC will continue ticking during
> + platform/system suspend.
wrap at 80, keep wrap pos consisent in this file.
> +
> + clock-names:
> + minItems: 2
> + maxItems: 3
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/interrupt-controller/irq.h>
> +
> + rtc@40060000 {
> + compatible = "nxp,s32g3-rtc",
> + "nxp,s32g2-rtc";
align to previous line "
> + reg = <0x40060000 0x1000>;
> + interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&clks 54>, <&clks 56>, <&clks 55>;
> + clock-names = "ipg",
> + "rtc_runtime_s2",
> + "rtc_standby_s0";
align to previous line "
> + };
> --
> 2.45.2
>
On 11/11/2024 5:14 PM, Frank Li wrote:
> On Mon, Nov 11, 2024 at 03:59:37PM +0200, Ciprian Costea wrote:
>> From: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com>
>>
>> RTC tracks clock time during system suspend and it is used as a wakeup
>> source on S32G2/S32G3 architecture.
>>
>> RTC from S32G2/S32G3 is not battery-powered and it is not kept alive
>> during system reset.
>>
>> Co-developed-by: Bogdan-Gabriel Roman <bogdan-gabriel.roman@nxp.com>
>> Signed-off-by: Bogdan-Gabriel Roman <bogdan-gabriel.roman@nxp.com>
>> Co-developed-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>
>> Signed-off-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>
>> Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com>
>> ---
>> .../devicetree/bindings/rtc/nxp,s32g-rtc.yaml | 78 +++++++++++++++++++
>> 1 file changed, 78 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml b/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml
>> new file mode 100644
>> index 000000000000..231811579e1b
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml
>> @@ -0,0 +1,78 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/rtc/nxp,s32g-rtc.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: NXP S32G2/S32G3 Real Time Clock (RTC)
>> +
>> +maintainers:
>> + - Bogdan Hamciuc <bogdan.hamciuc@nxp.com>
>> + - Ciprian Marian Costea <ciprianmarian.costea@nxp.com>
>> +
>> +description:
>> + RTC hardware module present on S32G2/S32G3 SoCs is used as a wakeup
>> + source. It is not kept alive during system reset and it is not
>> + battery-powered.
>> +
>> + RTC hardware module contains a hardware mux with 4 entries/inputs
>> + for clock source selection. On S32G2/S32G3 SoCs, this mux is used
>> + to select between a clock source for runtime which brings more
>> + precision but is not available during system standby, and a clock
>> + source for suspend state.
>> +
>> +properties:
>> + compatible:
>> + oneOf:
>> + - enum:
>> + - nxp,s32g2-rtc
>> + - items:
>> + - const: nxp,s32g3-rtc
>> + - const: nxp,s32g2-rtc
>> +
>> + reg:
>> + maxItems: 1
>> +
>> + interrupts:
>> + maxItems: 1
>> +
>> + clocks:
>> + minItems: 2
>> + items:
>> + - description: ipg clock drives the access to the
>> + RTC iomapped registers
>> + - description: Runtime clock source. It must be a clock
>> + source for the RTC module. It will be disabled by hardware
>> + during Standby/Suspend.
>> + - description: Standby/Suspend clock source. It is optional
>> + and can be used in case the RTC will continue ticking during
>> + platform/system suspend.
>
> wrap at 80, keep wrap pos consisent in this file.
>
Hello Frank,
Thanks for your review.
I will update wrapping to 80 characters in V5.
>> +
>> + clock-names:
>> + minItems: 2
>> + maxItems: 3
>> +
>> +required:
>> + - compatible
>> + - reg
>> + - interrupts
>> + - clocks
>> + - clock-names
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> + - |
>> + #include <dt-bindings/interrupt-controller/arm-gic.h>
>> + #include <dt-bindings/interrupt-controller/irq.h>
>> +
>> + rtc@40060000 {
>> + compatible = "nxp,s32g3-rtc",
>> + "nxp,s32g2-rtc";
>
> align to previous line "
>
I will update this alignment in V5.
>> + reg = <0x40060000 0x1000>;
>> + interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
>> + clocks = <&clks 54>, <&clks 56>, <&clks 55>;
>> + clock-names = "ipg",
>> + "rtc_runtime_s2",
>> + "rtc_standby_s0";
>
> align to previous line "
I will update this alignment in V5.
Best Regards,
Ciprian
>
>> + };
>> --
>> 2.45.2
>>
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