[PATCH 0/2] k3-am62a: Add MCU SRAM node

[PATCH 0/2] k3-am62a: Add MCU SRAM node

[Sai Sree Kartheek Adivi]

The first patch adds MCU SRAM node to the device tree. The second
patch makes the MCU SRAM accessible to R5 remote proc driver for
image loading.

Hari Nagalla (2):
  arm64: dts: ti: k3-am62a: Add MCU SRAM node
  arm64: dts: ti: k3-am62a-ti-ipc-firmware: MCU SRAM

 arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi             | 12 ++++++++++++
 arch/arm64/boot/dts/ti/k3-am62a-ti-ipc-firmware.dtsi |  1 +
 2 files changed, 13 insertions(+)

-- 
2.54.0

[PATCH 1/2] arm64: dts: ti: k3-am62a: Add MCU SRAM node

[Sai Sree Kartheek Adivi]

From: Hari Nagalla <hnagalla@ti.com>

AM62A devices have two banks of 256KB each SRAM in MCU domain. This
memory is typically used by MCU R5 firmware for low latency accesses.

Signed-off-by: Hari Nagalla <hnagalla@ti.com>
Signed-off-by: Judith Mendez <jm@ti.com>
Signed-off-by: Sai Sree Kartheek Adivi <s-adivi@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi
index 5b90320778747..23cc9be1dd5cc 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi
@@ -6,6 +6,18 @@
  */
 
 &cbass_mcu {
+	mcu_ram: sram@79100000 {
+		compatible = "mmio-sram";
+		reg = <0x00 0x79100000 0x00 0x80000>;
+		ranges = <0x00 0x00 0x79100000 0x80000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		mcu1-sram@0 {
+			reg = <0x0 0x80000>;
+		};
+	};
+
 	mcu_pmx0: pinctrl@4084000 {
 		compatible = "pinctrl-single";
 		reg = <0x00 0x04084000 0x00 0x88>;
-- 
2.54.0

[PATCH 2/2] arm64: dts: ti: k3-am62a-ti-ipc-firmware: MCU SRAM

[Sai Sree Kartheek Adivi]

From: Hari Nagalla <hnagalla@ti.com>

TI MCU R5 firmware also uses MCU SRAM, hence make this SRAM
accessible to R5 remote proc for image loading.

Signed-off-by: Hari Nagalla <hnagalla@ti.com>
Signed-off-by: Judith Mendez <jm@ti.com>
Signed-off-by: Sai Sree Kartheek Adivi <s-adivi@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am62a-ti-ipc-firmware.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62a-ti-ipc-firmware.dtsi b/arch/arm64/boot/dts/ti/k3-am62a-ti-ipc-firmware.dtsi
index 06d4e815b1670..b33613a21da22 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a-ti-ipc-firmware.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62a-ti-ipc-firmware.dtsi
@@ -75,6 +75,7 @@ &mcu_r5fss0 {
 };
 
 &mcu_r5fss0_core0 {
+	sram = <&mcu_ram>;
 	mboxes = <&mailbox0_cluster2>, <&mbox_mcu_r5_0>;
 	memory-region = <&mcu_r5fss0_core0_dma_memory_region>,
 			<&mcu_r5fss0_core0_memory_region>;
-- 
2.54.0