ARM: dts: stm32: Add Engicam MicroGEA STM32MP1 SoM

MicroGEA STM32MP1 is a STM32MP157A based Micro SoM.

General features:
- STM32MP157AAC
- Up to 1GB DDR3L-800
- 512MB Nand flash
- I2S

MicroGEA STM32MP1 needs to mount on top of Engicam MicroDev carrier
boards for creating complete platform solutions.

Add support for it.

Signed-off-by: Matteo Lisi <matteo.lisi@engicam.com>
Signed-off-by: Francesco Utel <francesco.utel@engicam.com>
Signed-off-by: Mirko Ardinghi <mirko.ardinghi@engicam.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

diff --git a/arch/arm/boot/dts/stm32mp157a-microgea-stm32mp1.dtsi b/arch/arm/boot/dts/stm32mp157a-microgea-stm32mp1.dtsi
new file mode 100644 (file)
index 0000000..0b85175
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp157a-microgea-stm32mp1.dtsi
@@ -0,0 +1,148 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) STMicroelectronics 2019 - All Rights Reserved
+ * Copyright (c) 2020 Engicam srl
+ * Copyright (c) 2020 Amarula Solutons(India)
+ */
+
+/ {
+       compatible = "engicam,microgea-stm32mp1", "st,stm32mp157";
+
+       memory@c0000000 {
+               device_type = "memory";
+               reg = <0xc0000000 0x10000000>;
+       };
+
+       reserved-memory {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges;
+
+               mcuram2: mcuram2@10000000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x10000000 0x40000>;
+                       no-map;
+               };
+
+               vdev0vring0: vdev0vring0@10040000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x10040000 0x1000>;
+                       no-map;
+               };
+
+               vdev0vring1: vdev0vring1@10041000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x10041000 0x1000>;
+                       no-map;
+               };
+
+               vdev0buffer: vdev0buffer@10042000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x10042000 0x4000>;
+                       no-map;
+               };
+
+               mcuram: mcuram@30000000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x30000000 0x40000>;
+                       no-map;
+               };
+
+               retram: retram@38000000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x38000000 0x10000>;
+                       no-map;
+               };
+       };
+
+       vin: regulator-vin {
+               compatible = "regulator-fixed";
+               regulator-name = "vin";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               regulator-always-on;
+       };
+
+       vddcore: regulator-vddcore {
+               compatible = "regulator-fixed";
+               regulator-name = "vddcore";
+               regulator-min-microvolt = <1200000>;
+               regulator-max-microvolt = <1200000>;
+               regulator-always-on;
+               vin-supply = <&vin>;
+       };
+
+       vdd: regulator-vdd {
+               compatible = "regulator-fixed";
+               regulator-name = "vdd";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+               vin-supply = <&vin>;
+       };
+
+       vddq_ddr: regulator-vddq-ddr {
+               compatible = "regulator-fixed";
+               regulator-name = "vddq_ddr";
+               regulator-min-microvolt = <1350000>;
+               regulator-max-microvolt = <1350000>;
+               regulator-always-on;
+               vin-supply = <&vin>;
+       };
+};
+
+&dts {
+       status = "okay";
+};
+
+&fmc {
+       pinctrl-names = "default", "sleep";
+       pinctrl-0 = <&fmc_pins_a>;
+       pinctrl-1 = <&fmc_sleep_pins_a>;
+       status = "okay";
+
+       nand-controller@4,0 {
+               status = "okay";
+
+               nand@0 {
+                       reg = <0>;
+                       nand-on-flash-bbt;
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+               };
+       };
+};
+
+&ipcc {
+       status = "okay";
+};
+
+&iwdg2{
+       timeout-sec = <32>;
+       status = "okay";
+};
+
+&m4_rproc{
+       memory-region = <&retram>, <&mcuram>, <&mcuram2>, <&vdev0vring0>,
+                       <&vdev0vring1>, <&vdev0buffer>;
+       mboxes = <&ipcc 0>, <&ipcc 1>, <&ipcc 2>;
+       mbox-names = "vq0", "vq1", "shutdown";
+       interrupt-parent = <&exti>;
+       interrupts = <68 1>;
+       status = "okay";
+};
+
+&rng1 {
+       status = "okay";
+};
+
+&rtc{
+       status = "okay";
+};
+
+&vrefbuf {
+       regulator-min-microvolt = <2500000>;
+       regulator-max-microvolt = <2500000>;
+       vdda-supply = <&vdd>;
+       status = "okay";
+};