[PATCH] arm64: dts: ti: k3-am62: add watchdog nodes

[PATCH] arm64: dts: ti: k3-am62: add watchdog nodes

[Julien Panis]

Add nodes for watchdogs :
- 5 in main domain
- 1 in MCU domain
- 1 in wakeup domain

Signed-off-by: Julien Panis <jpanis@baylibre.com>
---
 arch/arm64/boot/dts/ti/k3-am62-main.dtsi   | 45 ++++++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi    |  9 +++++
 arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi |  9 +++++
 3 files changed, 63 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
index 5b2c210c592c..7202937618b7 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
@@ -572,4 +572,49 @@ main_mcan0: can@20701000 {
 		interrupt-names = "int0", "int1";
 		bosch,mram-cfg = <0x0 128 64 64 64 64 32 32>;
 	};
+
+	main_rti0: watchdog@e000000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x0e000000 0x00 0x100>;
+		clocks = <&k3_clks 125 0>;
+		power-domains = <&k3_pds 125 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 125 0>;
+		assigned-clock-parents = <&k3_clks 125 2>;
+	};
+
+	main_rti1: watchdog@e010000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x0e010000 0x00 0x100>;
+		clocks = <&k3_clks 126 0>;
+		power-domains = <&k3_pds 126 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 126 0>;
+		assigned-clock-parents = <&k3_clks 126 2>;
+	};
+
+	main_rti2: watchdog@e020000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x0e020000 0x00 0x100>;
+		clocks = <&k3_clks 127 0>;
+		power-domains = <&k3_pds 127 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 127 0>;
+		assigned-clock-parents = <&k3_clks 127 2>;
+	};
+
+	main_rti3: watchdog@e030000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x0e030000 0x00 0x100>;
+		clocks = <&k3_clks 128 0>;
+		power-domains = <&k3_pds 128 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 128 0>;
+		assigned-clock-parents = <&k3_clks 128 2>;
+	};
+
+	main_rti15: watchdog@e0f0000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x0e0f0000 0x00 0x100>;
+		clocks = <&k3_clks 130 0>;
+		power-domains = <&k3_pds 130 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 130 0>;
+		assigned-clock-parents = <&k3_clks 130 2>;
+	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi
index f56c803560f2..f82e94def774 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi
@@ -81,4 +81,13 @@ mcu_gpio0: gpio@4201000 {
 		clocks = <&k3_clks 79 0>;
 		clock-names = "gpio";
 	};
+
+	mcu_rti0: watchdog@4880000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x04880000 0x00 0x100>;
+		clocks = <&k3_clks 131 0>;
+		power-domains = <&k3_pds 131 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 131 0>;
+		assigned-clock-parents = <&k3_clks 131 2>;
+	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
index 4090134676cf..3c95ac3a0dd5 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
@@ -38,4 +38,13 @@ wkup_i2c0: i2c@2b200000 {
 		clocks = <&k3_clks 107 4>;
 		clock-names = "fck";
 	};
+
+	wkup_rti0: watchdog@2b000000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x2b000000 0x00 0x100>;
+		clocks = <&k3_clks 132 0>;
+		power-domains = <&k3_pds 132 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 132 0>;
+		assigned-clock-parents = <&k3_clks 132 2>;
+	};
 };
-- 
2.25.1

Re: [PATCH] arm64: dts: ti: k3-am62: add watchdog nodes

[Nishanth Menon]

On 09:08-20220630, Julien Panis wrote:
> Add nodes for watchdogs :
> - 5 in main domain
> - 1 in MCU domain
> - 1 in wakeup domain

True, but note: MCU wdt is typically used by M4F and wakeup WDT is
typically used by DM (R5) firmware. Is'nt it better we mark them
reserved (with device tree comments) to indicate the same?

This can allow the kernel device tree to be used by zephyr on M4 for example..

> 

[...]

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D

Re: [PATCH] arm64: dts: ti: k3-am62: add watchdog nodes

[Julien Panis]

On 07/07/2022 01:49, Nishanth Menon wrote:
> On 09:08-20220630, Julien Panis wrote:
>> Add nodes for watchdogs :
>> - 5 in main domain
>> - 1 in MCU domain
>> - 1 in wakeup domain
> True, but note: MCU wdt is typically used by M4F and wakeup WDT is
> typically used by DM (R5) firmware. Is'nt it better we mark them
> reserved (with device tree comments) to indicate the same?
>
> This can allow the kernel device tree to be used by zephyr on M4 for example..
Nishanth, I will submit a new version of this patch that will take your 
suggestion into account.
> [...]
>