[PATCH v4 00/11] Enable Power Modes Support for SAMA7D65 SoC

[PATCH v4 00/11] Enable Power Modes Support for SAMA7D65 SoC

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

This patch set adds support for low power modes for the SAMA7D65 SoC and
the required components and changes for low power modes.

The series includes changes in the asm code to account for the addtional
clocks that are in this SoC.

The Device tree additions are to enable all the components needed to
keep the SoC in low power mode.

There are some DTB check warnings but that is due to the dt-binding not
in the correct .yaml file format.

Changes v1 -> v2:
- Add missing compatible for ddr3phy, it is now in both syscon sets.
- Fix alphabetical ordering for sama7d65.
- Remove the incorrect reorganizing patch.
- Remove sama7g5-rtt as a compatible for sama7d65-rtt and add
  sama7d65-rtt as a compatible wake up source in the pm driver.

Changes from v2 -> v3:
- Correct mistake in v2 sfrbu dt-binding patch.
- Correct incorrect dt-binding addition and formatting for rtc and rtt bindings.
- Add missing SoB tag.
- Cleaned up commit message for Backup mode to describe SHDWC is status
  register is cleared for this SoC.
- Cleaned up variable naming and usage for mcks. Changed the mcks number
  to the correct number of clocks needed to be saved and corrected the
  ASM code accordingly.
- Removed the SHDWC from ULP0 wake-up source as it is not configured as
  a valid wake-up source for ULP0.
- Separated all the DTSI and DTS changes into individual patches.

Changes from v3 -> v4:
- Add sama7d65-gpbr to the dt-binding.
- Converted the sama5d2-secumod binding into yaml format.
- Add sama7d65-secumod to the new dt binding.
- Collect and remove applied and accpeted pathces from the set.

v1) https://lore.kernel.org/linux-arm-kernel/cover.1738257860.git.Ryan.Wanner@microchip.com/
v2) https://lore.kernel.org/linux-arm-kernel/cover.1739221064.git.Ryan.Wanner@microchip.com/
v3) https://lore.kernel.org/linux-arm-kernel/cover.1740671156.git.Ryan.Wanner@microchip.com/T/#m576233e7af84d68559afb286884c2b9294e7bc1d 

Ryan Wanner (11):
  dt-bindings: sram: Add microchip,sama7d65-sram
  dt-bindings: power: reset: atmel,sama5d2-shdwc: Add
    microchip,sama7d65-shdwc
  dt-bindings: reset: atmel,at91sam9260-reset: add
    microchip,sama7d65-rstc
  dt-bindings: rtc: at91rm9200: add microchip,sama7d65-rtc
  dt-bindings: at91rm9260-rtt: add microchip,sama7d65-rtt
  dt-bindings: mfd: atmel: Add microchip,sama7d65-gpbr
  dt-bindings: mfd: syscon: atmel,sama5d2-secumod: convert to yaml
  dt-bindings: mfd: syscon: add microchip,sama7d65-secumod
  ARM: dts: microchip: sama7d65: Add SRAM and DRAM components support
  ARM: dts: microchip: sama7d65: Add RTT and GPBR Support for sama7d65
    SoC
  ARM: dts: microchip: sama7d65: Add RTT timer to curiosity board

 .../bindings/arm/atmel,sama5d2-secumod.yaml   | 49 +++++++++++++++++++
 .../devicetree/bindings/arm/atmel-sysregs.txt | 25 ----------
 .../bindings/mfd/atmel,at91sam9260-gpbr.yaml  |  1 +
 .../power/reset/atmel,sama5d2-shdwc.yaml      |  5 ++
 .../reset/atmel,at91sam9260-reset.yaml        |  3 ++
 .../bindings/rtc/atmel,at91rm9200-rtc.yaml    |  4 +-
 .../bindings/rtc/atmel,at91sam9260-rtt.yaml   |  1 +
 .../devicetree/bindings/sram/sram.yaml        |  1 +
 .../dts/microchip/at91-sama7d65_curiosity.dts |  4 ++
 arch/arm/boot/dts/microchip/sama7d65.dtsi     | 47 ++++++++++++++++++
 10 files changed, 114 insertions(+), 26 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml

-- 
2.43.0

[PATCH v4 01/11] dt-bindings: sram: Add microchip,sama7d65-sram

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

Add microchip,sama7d65-sram compatibility to DT binding documentation.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
---
 Documentation/devicetree/bindings/sram/sram.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/sram/sram.yaml b/Documentation/devicetree/bindings/sram/sram.yaml
index 7c1337e159f2..3071c5075ee4 100644
--- a/Documentation/devicetree/bindings/sram/sram.yaml
+++ b/Documentation/devicetree/bindings/sram/sram.yaml
@@ -31,6 +31,7 @@ properties:
         - amlogic,meson-gxbb-sram
         - arm,juno-sram-ns
         - atmel,sama5d2-securam
+        - microchip,sama7d65-securam
         - nvidia,tegra186-sysram
         - nvidia,tegra194-sysram
         - nvidia,tegra234-sysram
-- 
2.43.0

[PATCH v4 02/11] dt-bindings: power: reset: atmel,sama5d2-shdwc: Add microchip,sama7d65-shdwc

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

Add SAMA7D65 SHDWC compatible to DT bindings documentation

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
---
 .../devicetree/bindings/power/reset/atmel,sama5d2-shdwc.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/power/reset/atmel,sama5d2-shdwc.yaml b/Documentation/devicetree/bindings/power/reset/atmel,sama5d2-shdwc.yaml
index 0735ceb7c103..9c34249b2d6d 100644
--- a/Documentation/devicetree/bindings/power/reset/atmel,sama5d2-shdwc.yaml
+++ b/Documentation/devicetree/bindings/power/reset/atmel,sama5d2-shdwc.yaml
@@ -16,6 +16,11 @@ description: |
 properties:
   compatible:
     oneOf:
+      - items:
+          - enum:
+              - microchip,sama7d65-shdwc
+          - const: microchip,sama7g5-shdwc
+          - const: syscon
       - items:
           - const: microchip,sama7g5-shdwc
           - const: syscon
-- 
2.43.0

[PATCH v4 03/11] dt-bindings: reset: atmel,at91sam9260-reset: add microchip,sama7d65-rstc

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

Add SAMA7D65 RSTC compatible to DT bindings documentation. The
sama7d65-rstc is compatible with the sama7g5-rstc.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../devicetree/bindings/reset/atmel,at91sam9260-reset.yaml     | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml b/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml
index 98465d26949e..a2ab7f8a11f8 100644
--- a/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml
+++ b/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml
@@ -23,6 +23,9 @@ properties:
               - atmel,sama5d3-rstc
               - microchip,sam9x60-rstc
               - microchip,sama7g5-rstc
+      - items:
+          - const: microchip,sama7d65-rstc
+          - const: microchip,sama7g5-rstc
       - items:
           - const: atmel,sama5d3-rstc
           - const: atmel,at91sam9g45-rstc
-- 
2.43.0

[PATCH v4 04/11] dt-bindings: rtc: at91rm9200: add microchip,sama7d65-rtc

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

Add SAMA7D65 RTC compatible to DT bindings documentation.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
---
 .../devicetree/bindings/rtc/atmel,at91rm9200-rtc.yaml         | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.yaml b/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.yaml
index c8bb2eef442d..7c5b13caa40b 100644
--- a/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.yaml
@@ -23,7 +23,9 @@ properties:
           - microchip,sam9x60-rtc
           - microchip,sama7g5-rtc
       - items:
-          - const: microchip,sam9x7-rtc
+          - enum:
+              - microchip,sam9x7-rtc
+              - microchip,sama7d65-rtc
           - const: microchip,sam9x60-rtc
 
   reg:
-- 
2.43.0

[PATCH v4 05/11] dt-bindings: at91rm9260-rtt: add microchip,sama7d65-rtt

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

Add SAMA7D65 RTT compatible to DT bindings documentation.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
---
 Documentation/devicetree/bindings/rtc/atmel,at91sam9260-rtt.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/rtc/atmel,at91sam9260-rtt.yaml b/Documentation/devicetree/bindings/rtc/atmel,at91sam9260-rtt.yaml
index a7f6c1d1a08a..9c9b981fe38b 100644
--- a/Documentation/devicetree/bindings/rtc/atmel,at91sam9260-rtt.yaml
+++ b/Documentation/devicetree/bindings/rtc/atmel,at91sam9260-rtt.yaml
@@ -22,6 +22,7 @@ properties:
           - enum:
               - microchip,sam9x60-rtt
               - microchip,sam9x7-rtt
+              - microchip,sama7d65-rtt
           - const: atmel,at91sam9260-rtt
       - items:
           - const: microchip,sama7g5-rtt
-- 
2.43.0

[PATCH v4 06/11] dt-bindings: mfd: atmel: Add microchip,sama7d65-gpbr

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

 Add SAMA7D65 GPBR compatible to DT bindings documentation.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
---
 .../devicetree/bindings/mfd/atmel,at91sam9260-gpbr.yaml          | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/mfd/atmel,at91sam9260-gpbr.yaml b/Documentation/devicetree/bindings/mfd/atmel,at91sam9260-gpbr.yaml
index f805545aa62a..f6f47999c6c1 100644
--- a/Documentation/devicetree/bindings/mfd/atmel,at91sam9260-gpbr.yaml
+++ b/Documentation/devicetree/bindings/mfd/atmel,at91sam9260-gpbr.yaml
@@ -19,6 +19,7 @@ properties:
       - items:
           - enum:
               - atmel,at91sam9260-gpbr
+              - microchip,sama7d65-gpbr
           - const: syscon
       - items:
           - enum:
-- 
2.43.0

Re: [PATCH v4 06/11] dt-bindings: mfd: atmel: Add microchip,sama7d65-gpbr

[Krzysztof Kozlowski]

On Wed, Mar 26, 2025 at 08:35:39AM -0700, Ryan.Wanner@microchip.com wrote:
> From: Ryan Wanner <Ryan.Wanner@microchip.com>
> 
>  Add SAMA7D65 GPBR compatible to DT bindings documentation.
> 
> Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
> ---
>  .../devicetree/bindings/mfd/atmel,at91sam9260-gpbr.yaml          | 1 +
>  1 file changed, 1 insertion(+)

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

[PATCH v4 07/11] dt-bindings: mfd: syscon: atmel,sama5d2-secumod: convert to yaml

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

Convert Microchip AT91 secumod to YAML format.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
---
 .../bindings/arm/atmel,sama5d2-secumod.yaml   | 48 +++++++++++++++++++
 .../devicetree/bindings/arm/atmel-sysregs.txt | 25 ----------
 2 files changed, 48 insertions(+), 25 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml

diff --git a/Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml b/Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml
new file mode 100644
index 000000000000..6edeb320220f
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/atmel,sama5d2-secumod.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip AT91 Security Module (SECUMOD)
+
+maintainers:
+  - Nicolas Ferre <nicolas.ferre@microchip.com>
+
+description:
+  The Security Module also offers the PIOBU pins which can be used as GPIO pins.
+  Note that they maintain their voltage during Backup/Self-refresh.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: atmel,sama5d2-secumod
+          - const: syscon
+      - items:
+          - enum:
+              - microchip,sama7g5-secumod
+          - const: atmel,sama5d2-secumod
+          - const: syscon
+  reg:
+    maxItems: 1
+
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 2
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    secumod@fc040000 {
+      compatible = "atmel,sama5d2-secumod", "syscon";
+      reg = <0xfc040000 0x100>;
+      gpio-controller;
+      #gpio-cells = <2>;
+    };
diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
index d3821f651e72..5ce54f9befe6 100644
--- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
+++ b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
@@ -46,28 +46,3 @@ Examples:
 		reg = <0xffffe800 0x200>;
 	};
 
-Security Module (SECUMOD)
-
-The Security Module macrocell provides all necessary secure functions to avoid
-voltage, temperature, frequency and mechanical attacks on the chip. It also
-embeds secure memories that can be scrambled.
-
-The Security Module also offers the PIOBU pins which can be used as GPIO pins.
-Note that they maintain their voltage during Backup/Self-refresh.
-
-required properties:
-- compatible: Should be "atmel,<chip>-secumod", "syscon".
-  <chip> can be "sama5d2".
-- reg: Should contain registers location and length
-- gpio-controller:	Marks the port as GPIO controller.
-- #gpio-cells:		There are 2. The pin number is the
-			first, the second represents additional
-			parameters such as GPIO_ACTIVE_HIGH/LOW.
-
-
-	secumod@fc040000 {
-		compatible = "atmel,sama5d2-secumod", "syscon";
-		reg = <0xfc040000 0x100>;
-		gpio-controller;
-		#gpio-cells = <2>;
-	};
-- 
2.43.0

Re: [PATCH v4 07/11] dt-bindings: mfd: syscon: atmel,sama5d2-secumod: convert to yaml

[Krzysztof Kozlowski]

On Wed, Mar 26, 2025 at 08:35:40AM -0700, Ryan.Wanner@microchip.com wrote:
> +
> +examples:
> +  - |
> +    secumod@fc040000 {

Use generic names, probably tamper-protection@ or security-module@

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

[PATCH v4 08/11] dt-bindings: mfd: syscon: add microchip,sama7d65-secumod

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

Add SAMA7D65 SECUMOD compatible string to DT bindings documentation.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
---
 Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml b/Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml
index 6edeb320220f..2f3e8722443b 100644
--- a/Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml
+++ b/Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml
@@ -21,6 +21,7 @@ properties:
           - const: syscon
       - items:
           - enum:
+              - microchip,sama7d65-secumod
               - microchip,sama7g5-secumod
           - const: atmel,sama5d2-secumod
           - const: syscon
-- 
2.43.0

Re: [PATCH v4 08/11] dt-bindings: mfd: syscon: add microchip,sama7d65-secumod

[Krzysztof Kozlowski]

On Wed, Mar 26, 2025 at 08:35:41AM -0700, Ryan.Wanner@microchip.com wrote:
> From: Ryan Wanner <Ryan.Wanner@microchip.com>
> 
> Add SAMA7D65 SECUMOD compatible string to DT bindings documentation.
> 
> Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
> ---
>  Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml | 1 +
>  1 file changed, 1 insertion(+)

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

[PATCH v4 09/11] ARM: dts: microchip: sama7d65: Add SRAM and DRAM components support

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

Add SRAM, secumod, UDDRC, and DDR3phy to enable support for low power modes.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
---
 arch/arm/boot/dts/microchip/sama7d65.dtsi | 35 +++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/arm/boot/dts/microchip/sama7d65.dtsi b/arch/arm/boot/dts/microchip/sama7d65.dtsi
index b6710ccd4c36..7d71e7326e3a 100644
--- a/arch/arm/boot/dts/microchip/sama7d65.dtsi
+++ b/arch/arm/boot/dts/microchip/sama7d65.dtsi
@@ -47,6 +47,14 @@ slow_xtal: clock-slowxtal {
 		};
 	};
 
+	ns_sram: sram@100000 {
+		compatible = "mmio-sram";
+		reg = <0x100000 0x20000>;
+		ranges;
+		#address-cells = <1>;
+		#size-cells = <1>;
+	};
+
 	soc {
 		compatible = "simple-bus";
 		ranges;
@@ -58,6 +66,23 @@ sfrbu: sfr@e0008000 {
 			reg = <0xe0008000 0x20>;
 		};
 
+		securam: sram@e0000800 {
+			compatible = "microchip,sama7d65-securam", "atmel,sama5d2-securam", "mmio-sram";
+			reg = <0xe0000800 0x4000>;
+			ranges = <0 0xe0000800 0x4000>;
+			clocks = <&pmc PMC_TYPE_PERIPHERAL 17>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			no-memory-wc;
+		};
+
+		secumod: secumod@e0004000 {
+			compatible = "microchip,sama7d65-secumod", "atmel,sama5d2-secumod", "syscon";
+			reg = <0xe0004000 0x4000>;
+			gpio-controller;
+			#gpio-cells = <2>;
+		};
+
 		pioa: pinctrl@e0014000 {
 			compatible = "microchip,sama7d65-pinctrl", "microchip,sama7g5-pinctrl";
 			reg = <0xe0014000 0x800>;
@@ -227,6 +252,16 @@ i2c10: i2c@600 {
 			};
 		};
 
+		uddrc: uddrc@e3800000 {
+			compatible = "microchip,sama7d65-uddrc", "microchip,sama7g5-uddrc";
+			reg = <0xe3800000 0x4000>;
+		};
+
+		ddr3phy: ddr3phy@e3804000 {
+			compatible = "microchip,sama7d65-ddr3phy", "microchip,sama7g5-ddr3phy";
+			reg = <0xe3804000 0x1000>;
+		};
+
 		gic: interrupt-controller@e8c11000 {
 			compatible = "arm,cortex-a7-gic";
 			reg = <0xe8c11000 0x1000>,
-- 
2.43.0

[PATCH v4 10/11] ARM: dts: microchip: sama7d65: Add RTT and GPBR Support for sama7d65 SoC

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

Add RTT support for SAMA7D65 SoC. The GPBR is added so the SoC is able
to store the RTT time data.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
---
 arch/arm/boot/dts/microchip/sama7d65.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm/boot/dts/microchip/sama7d65.dtsi b/arch/arm/boot/dts/microchip/sama7d65.dtsi
index 7d71e7326e3a..59b43a633aef 100644
--- a/arch/arm/boot/dts/microchip/sama7d65.dtsi
+++ b/arch/arm/boot/dts/microchip/sama7d65.dtsi
@@ -132,6 +132,13 @@ shdwc: poweroff@e001d200 {
 			status = "disabled";
 		};
 
+		rtt: rtc@e001d300 {
+			compatible = "microchip,sama7d65-rtt", "atmel,at91sam9260-rtt";
+			reg = <0xe001d300 0x30>;
+			interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clk32k 0>;
+		};
+
 		clk32k: clock-controller@e001d500 {
 			compatible = "microchip,sama7d65-sckc", "microchip,sam9x60-sckc";
 			reg = <0xe001d500 0x4>;
@@ -146,6 +153,11 @@ rtc: rtc@e001d800 {
 			clocks = <&clk32k 1>;
 		};
 
+		gpbr: syscon@e001d700 {
+			compatible = "microchip,sama7d65-gpbr", "syscon";
+			reg = <0xe001d700 0x48>;
+		};
+
 		chipid@e0020000 {
 			compatible = "microchip,sama7d65-chipid";
 			reg = <0xe0020000 0x8>;
-- 
2.43.0

[PATCH v4 11/11] ARM: dts: microchip: sama7d65: Add RTT timer to curiosity board

[Ryan.Wanner]

From: Ryan Wanner <Ryan.Wanner@microchip.com>

Add RTT timer with backup register for SAMA7D65_Curiosity board.

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
---
 arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
index 30fdc4f55a3b..3105fe1766c3 100644
--- a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
+++ b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
@@ -141,6 +141,10 @@ pinctrl_uart6_default: uart6-default {
 	};
 };
 
+&rtt {
+	atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
+};
+
 &sdmmc1 {
 	bus-width = <4>;
 	pinctrl-names = "default";
-- 
2.43.0

Re: [PATCH v4 00/11] Enable Power Modes Support for SAMA7D65 SoC

[Rob Herring (Arm)]

On Wed, 26 Mar 2025 08:35:33 -0700, Ryan.Wanner@microchip.com wrote:
> From: Ryan Wanner <Ryan.Wanner@microchip.com>
> 
> This patch set adds support for low power modes for the SAMA7D65 SoC and
> the required components and changes for low power modes.
> 
> The series includes changes in the asm code to account for the addtional
> clocks that are in this SoC.
> 
> The Device tree additions are to enable all the components needed to
> keep the SoC in low power mode.
> 
> There are some DTB check warnings but that is due to the dt-binding not
> in the correct .yaml file format.
> 
> Changes v1 -> v2:
> - Add missing compatible for ddr3phy, it is now in both syscon sets.
> - Fix alphabetical ordering for sama7d65.
> - Remove the incorrect reorganizing patch.
> - Remove sama7g5-rtt as a compatible for sama7d65-rtt and add
>   sama7d65-rtt as a compatible wake up source in the pm driver.
> 
> Changes from v2 -> v3:
> - Correct mistake in v2 sfrbu dt-binding patch.
> - Correct incorrect dt-binding addition and formatting for rtc and rtt bindings.
> - Add missing SoB tag.
> - Cleaned up commit message for Backup mode to describe SHDWC is status
>   register is cleared for this SoC.
> - Cleaned up variable naming and usage for mcks. Changed the mcks number
>   to the correct number of clocks needed to be saved and corrected the
>   ASM code accordingly.
> - Removed the SHDWC from ULP0 wake-up source as it is not configured as
>   a valid wake-up source for ULP0.
> - Separated all the DTSI and DTS changes into individual patches.
> 
> Changes from v3 -> v4:
> - Add sama7d65-gpbr to the dt-binding.
> - Converted the sama5d2-secumod binding into yaml format.
> - Add sama7d65-secumod to the new dt binding.
> - Collect and remove applied and accpeted pathces from the set.
> 
> v1) https://lore.kernel.org/linux-arm-kernel/cover.1738257860.git.Ryan.Wanner@microchip.com/
> v2) https://lore.kernel.org/linux-arm-kernel/cover.1739221064.git.Ryan.Wanner@microchip.com/
> v3) https://lore.kernel.org/linux-arm-kernel/cover.1740671156.git.Ryan.Wanner@microchip.com/T/#m576233e7af84d68559afb286884c2b9294e7bc1d
> 
> Ryan Wanner (11):
>   dt-bindings: sram: Add microchip,sama7d65-sram
>   dt-bindings: power: reset: atmel,sama5d2-shdwc: Add
>     microchip,sama7d65-shdwc
>   dt-bindings: reset: atmel,at91sam9260-reset: add
>     microchip,sama7d65-rstc
>   dt-bindings: rtc: at91rm9200: add microchip,sama7d65-rtc
>   dt-bindings: at91rm9260-rtt: add microchip,sama7d65-rtt
>   dt-bindings: mfd: atmel: Add microchip,sama7d65-gpbr
>   dt-bindings: mfd: syscon: atmel,sama5d2-secumod: convert to yaml
>   dt-bindings: mfd: syscon: add microchip,sama7d65-secumod
>   ARM: dts: microchip: sama7d65: Add SRAM and DRAM components support
>   ARM: dts: microchip: sama7d65: Add RTT and GPBR Support for sama7d65
>     SoC
>   ARM: dts: microchip: sama7d65: Add RTT timer to curiosity board
> 
>  .../bindings/arm/atmel,sama5d2-secumod.yaml   | 49 +++++++++++++++++++
>  .../devicetree/bindings/arm/atmel-sysregs.txt | 25 ----------
>  .../bindings/mfd/atmel,at91sam9260-gpbr.yaml  |  1 +
>  .../power/reset/atmel,sama5d2-shdwc.yaml      |  5 ++
>  .../reset/atmel,at91sam9260-reset.yaml        |  3 ++
>  .../bindings/rtc/atmel,at91rm9200-rtc.yaml    |  4 +-
>  .../bindings/rtc/atmel,at91sam9260-rtt.yaml   |  1 +
>  .../devicetree/bindings/sram/sram.yaml        |  1 +
>  .../dts/microchip/at91-sama7d65_curiosity.dts |  4 ++
>  arch/arm/boot/dts/microchip/sama7d65.dtsi     | 47 ++++++++++++++++++
>  10 files changed, 114 insertions(+), 26 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/arm/atmel,sama5d2-secumod.yaml
> 
> --
> 2.43.0
> 
> 
> 


My bot found new DTB warnings on the .dts files added or changed in this
series.

Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
are fixed by another series. Ultimately, it is up to the platform
maintainer whether these warnings are acceptable or not. No need to reply
unless the platform maintainer has comments.

If you already ran DT checks and didn't see these error(s), then
make sure dt-schema is up to date:

  pip3 install dtschema --upgrade


This patch series was applied (using b4) to base:
 Base: attempting to guess base-commit...
 Base: tags/next-20250326 (best guess, 7/9 blobs matched)

If this is not the correct base, please add 'base-commit' tag
(or use b4 which does this automatically)

New warnings running 'make CHECK_DTBS=y for arch/arm/boot/dts/microchip/' for cover.1742936082.git.Ryan.Wanner@microchip.com:

arch/arm/boot/dts/microchip/aks-cdu.dtb: /: compatible: 'oneOf' conditional failed, one must be fixed:
	['atmel,at91sam9260'] is too short
	'atmel,at91rm9200' was expected
	'olimex,sam9-l9260' was expected
	'calao,usb-a9260' was expected
	'calao,usb-a9263' was expected
	'calao,usb-a9g20' was expected
	'calao,usb-a9g20-lpw' was expected
	'atmel,at91sam9260' is not one of ['overkiz,kizboxmini-base', 'overkiz,kizboxmini-mb', 'overkiz,kizboxmini-rd', 'overkiz,smartkiz', 'gardena,smart-gateway-at91sam']
	'atmel,at91sam9260' is not one of ['atmel,at91sam9g15', 'atmel,at91sam9g25', 'atmel,at91sam9g35', 'atmel,at91sam9x25', 'atmel,at91sam9x35']
	'overkiz,kizbox3-hs' was expected
	'microchip,sama5d27-wlsom1' was expected
	'microchip,sama5d27-wlsom1-ek' was expected
	'microchip,sama5d29-curiosity' was expected
	'atmel,sama5d27' was expected
	'microchip,sama5d2-icp' was expected
	'atmel,at91sam9260' is not one of ['microchip,sam9x60ek', 'microchip,sam9x60-curiosity']
	'microchip,sam9x75-curiosity' was expected
	'axentia,nattis-2' was expected
	'axentia,tse850v3' was expected
	'axentia,linea' was expected
	'overkiz,kizbox2-2' was expected
	'microchip,sama5d3-eds' was expected
	'calamp,lmu5000' was expected
	'exegin,q5xr5' was expected
	'atmel,at91sam9260' is not one of ['atmel,sama5d31', 'atmel,sama5d33', 'atmel,sama5d34', 'atmel,sama5d35', 'atmel,sama5d36']
	'atmel,at91sam9260' is not one of ['atmel,sama5d41', 'atmel,sama5d42', 'atmel,sama5d43', 'atmel,sama5d44']
	'microchip,sama7d65-curiosity' was expected
	'microchip,sama7g5ek' was expected
	'microchip,sama7g54-curiosity' was expected
	'atmel,at91sam9260' is not one of ['microchip,lan9662-pcb8291', 'microchip,lan9662-pcb8309']
	'microchip,lan9668-pcb8290' was expected
	'atmel,at91sam9260' is not one of ['kontron,kswitch-d10-mmt-8g', 'kontron,kswitch-d10-mmt-6g-2gs']
	'atmel,at91sam9260' is not one of ['atmel,sams70j19', 'atmel,sams70j20', 'atmel,sams70j21', 'atmel,sams70n19', 'atmel,sams70n20', 'atmel,sams70n21', 'atmel,sams70q19', 'atmel,sams70q20', 'atmel,sams70q21']
	'atmel,at91sam9260' is not one of ['atmel,samv70j19', 'atmel,samv70j20', 'atmel,samv70n19', 'atmel,samv70n20', 'atmel,samv70q19', 'atmel,samv70q20']
	'atmel,at91sam9260' is not one of ['atmel,samv71j19', 'atmel,samv71j20', 'atmel,samv71j21', 'atmel,samv71n19', 'atmel,samv71n20', 'atmel,samv71n21', 'atmel,samv71q19', 'atmel,samv71q20', 'atmel,samv71q21']
	from schema $id: http://devicetree.org/schemas/arm/atmel-at91.yaml#
arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dtb: /soc/uddrc@e3800000: failed to match any schema with compatible: ['microchip,sama7d65-uddrc', 'microchip,sama7g5-uddrc']
arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dtb: /soc/uddrc@e3800000: failed to match any schema with compatible: ['microchip,sama7d65-uddrc', 'microchip,sama7g5-uddrc']
arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dtb: ddr3phy@e3804000: compatible:0: 'microchip,sama7d65-ddr3phy' is not one of ['airoha,en7581-pbus-csr', 'al,alpine-sysfabric-service', 'allwinner,sun8i-a83t-system-controller', 'allwinner,sun8i-h3-system-controller', 'allwinner,sun8i-v3s-system-controller', 'allwinner,sun50i-a64-system-controller', 'altr,l3regs', 'altr,sdr-ctl', 'amd,pensando-elba-syscon', 'amlogic,meson-mx-assist', 'amlogic,meson-mx-bootrom', 'amlogic,meson8-analog-top', 'amlogic,meson8b-analog-top', 'amlogic,meson8-pmu', 'amlogic,meson8b-pmu', 'apm,merlin-poweroff-mailbox', 'apm,mustang-poweroff-mailbox', 'apm,xgene-csw', 'apm,xgene-efuse', 'apm,xgene-mcb', 'apm,xgene-rb', 'apm,xgene-scu', 'atmel,sama5d2-sfrbu', 'atmel,sama5d3-nfc-io', 'atmel,sama5d3-sfrbu', 'atmel,sama5d4-sfrbu', 'axis,artpec6-syscon', 'brcm,cru-clkset', 'brcm,sr-cdru', 'brcm,sr-mhb', 'cirrus,ep7209-syscon1', 'cirrus,ep7209-syscon2', 'cirrus,ep7209-syscon3', 'cnxt,cx92755-uc', 'freecom,fsg-cs2-system-controller', 'fsl,imx93-aonmix-ns-syscfg', 'fsl,imx93-wakeupmix-syscfg', 'fsl,ls1088a-reset', 'fsl,vf610-anatop', 'fsl,vf610-mscm-cpucfg', 'hisilicon,dsa-subctrl', 'hisilicon,hi6220-sramctrl', 'hisilicon,hip04-ppe', 'hisilicon,pcie-sas-subctrl', 'hisilicon,peri-subctrl', 'hpe,gxp-sysreg', 'loongson,ls1b-syscon', 'loongson,ls1c-syscon', 'lsi,axxia-syscon', 'marvell,armada-3700-cpu-misc', 'marvell,armada-3700-nb-pm', 'marvell,armada-3700-avs', 'marvell,armada-3700-usb2-host-misc', 'marvell,dove-global-config', 'mediatek,mt2701-pctl-a-syscfg', 'mediatek,mt2712-pctl-a-syscfg', 'mediatek,mt6397-pctl-pmic-syscfg', 'mediatek,mt8135-pctl-a-syscfg', 'mediatek,mt8135-pctl-b-syscfg', 'mediatek,mt8173-pctl-a-syscfg', 'mediatek,mt8365-syscfg', 'microchip,lan966x-cpu-syscon', 'microchip,mpfs-sysreg-scb', 'microchip,sam9x60-sfr', 'microchip,sama7g5-ddr3phy', 'mscc,ocelot-cpu-syscon', 'mstar,msc313-pmsleep', 'nuvoton,ma35d1-sys', 'nuvoton,wpcm450-shm', 'rockchip,px30-qos', 'rockchip,rk3036-qos', 'rockchip,rk3066-qos', 'rockchip,rk3128-qos', 'rockchip,rk3228-qos', 'rockchip,rk3288-qos', 'rockchip,rk3368-qos', 'rockchip,rk3399-qos', 'rockchip,rk3528-qos', 'rockchip,rk3562-qos', 'rockchip,rk3568-qos', 'rockchip,rk3576-qos', 'rockchip,rk3588-qos', 'rockchip,rv1126-qos', 'st,spear1340-misc', 'stericsson,nomadik-pmu', 'starfive,jh7100-sysmain', 'ti,am62-opp-efuse-table', 'ti,am62-usb-phy-ctrl', 'ti,am625-dss-oldi-io-ctrl', 'ti,am62p-cpsw-mac-efuse', 'ti,am654-dss-oldi-io-ctrl', 'ti,j784s4-acspcie-proxy-ctrl', 'ti,j784s4-pcie-ctrl', 'ti,keystone-pllctrl']
	from schema $id: http://devicetree.org/schemas/mfd/syscon.yaml#
arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dtb: ddr3phy@e3804000: compatible:1: 'syscon' was expected
	from schema $id: http://devicetree.org/schemas/mfd/syscon.yaml#
arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dtb: ddr3phy@e3804000: compatible: ['microchip,sama7d65-ddr3phy', 'microchip,sama7g5-ddr3phy'] does not contain items matching the given schema
	from schema $id: http://devicetree.org/schemas/mfd/syscon.yaml#
arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dtb: ddr3phy@e3804000: Unevaluated properties are not allowed ('compatible' was unexpected)
	from schema $id: http://devicetree.org/schemas/mfd/syscon.yaml#
arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dtb: /soc/ddr3phy@e3804000: failed to match any schema with compatible: ['microchip,sama7d65-ddr3phy', 'microchip,sama7g5-ddr3phy']
arch/arm/boot/dts/microchip/usb_a9263.dtb: /ahb/apb/gadget@fff78000: failed to match any schema with compatible: ['atmel,at91sam9263-udc']