* [PATCH V2 1/2] arm64: dts: ti: k3-am62-wakeup: Introduce RTC node
2023-03-15 17:07 [PATCH V2 0/2] arm64: dts: ti: k3-am62: Add watchdog and rtc nodes Nishanth Menon
@ 2023-03-15 17:07 ` Nishanth Menon
2023-03-20 14:36 ` Dhruva Gole
2023-03-15 17:07 ` [PATCH V2 2/2] arm64: dts: ti: k3-am62: Add watchdog nodes Nishanth Menon
1 sibling, 1 reply; 4+ messages in thread
From: Nishanth Menon @ 2023-03-15 17:07 UTC (permalink / raw)
To: Krzysztof Kozlowski, Rob Herring
Cc: linux-kernel, devicetree, linux-arm-kernel, Tero Kristo,
Vignesh Raghavendra, Nishanth Menon
Introduce digital RTC node in wakeup domain. Even though this has
no specific battery backup supply, this on-chip RTC is used in
cost-optimized board designs as a wakeup source.
Signed-off-by: Nishanth Menon <nm@ti.com>
---
No changes since V1
V1: https://lore.kernel.org/all/20230311105850.21811-2-nm@ti.com/
arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
index 38dced6b4fef..fec81546fbbd 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
@@ -40,4 +40,14 @@ wkup_i2c0: i2c@2b200000 {
clock-names = "fck";
status = "disabled";
};
+
+ wkup_rtc0: rtc@2b1f0000 {
+ compatible = "ti,am62-rtc";
+ reg = <0x00 0x2b1f0000 0x00 0x100>;
+ interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 117 6> , <&k3_clks 117 0>;
+ clock-names = "vbus", "osc32k";
+ power-domains = <&k3_pds 117 TI_SCI_PD_EXCLUSIVE>;
+ wakeup-source;
+ };
};
--
2.40.0
^ permalink raw reply [flat|nested] 4+ messages in thread* [PATCH V2 2/2] arm64: dts: ti: k3-am62: Add watchdog nodes
2023-03-15 17:07 [PATCH V2 0/2] arm64: dts: ti: k3-am62: Add watchdog and rtc nodes Nishanth Menon
2023-03-15 17:07 ` [PATCH V2 1/2] arm64: dts: ti: k3-am62-wakeup: Introduce RTC node Nishanth Menon
@ 2023-03-15 17:07 ` Nishanth Menon
1 sibling, 0 replies; 4+ messages in thread
From: Nishanth Menon @ 2023-03-15 17:07 UTC (permalink / raw)
To: Krzysztof Kozlowski, Rob Herring
Cc: linux-kernel, devicetree, linux-arm-kernel, Tero Kristo,
Vignesh Raghavendra, Nishanth Menon, Julien Panis
From: Julien Panis <jpanis@baylibre.com>
Add nodes for watchdogs :
- 5 in main domain
- 1 in MCU domain
- 1 in wakeup domain
Signed-off-by: Julien Panis <jpanis@baylibre.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
---
Changes since V1:
- On attempting to bring up MCU M4F, we realized that MCU RTI is
tightly coupled with M4F and this instance is meant to be
operated by MCU M4F. So, mark it as reserved by default, there
is no generic case where A53 benefits with MCU RTI.
V1: https://lore.kernel.org/r/20230311105850.21811-3-nm@ti.com
arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 45 ++++++++++++++++++++++
arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi | 11 ++++++
arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi | 11 ++++++
3 files changed, 67 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
index ea683fd77d6a..90d5f145de4f 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
@@ -758,6 +758,51 @@ main_mcan0: can@20701000 {
status = "disabled";
};
+ 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_rti4: 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>;
+ };
+
epwm0: pwm@23000000 {
compatible = "ti,am64-epwm", "ti,am3352-ehrpwm";
#pwm-cells = <3>;
diff --git a/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi
index a427231527c3..076601a41e84 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi
@@ -130,4 +130,15 @@ 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>;
+ /* Tightly coupled to M4F */
+ status = "reserved";
+ };
};
diff --git a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
index fec81546fbbd..7726ebae2539 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
@@ -50,4 +50,15 @@ wkup_rtc0: rtc@2b1f0000 {
power-domains = <&k3_pds 117 TI_SCI_PD_EXCLUSIVE>;
wakeup-source;
};
+
+ 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>;
+ /* Used by DM firmware */
+ status = "reserved";
+ };
};
--
2.40.0
^ permalink raw reply [flat|nested] 4+ messages in thread