ARM: dts: stm32: Add Engicam i.Core STM32MP1 SoM

i.Core STM32MP1 is an EDIMM SoM based on STM32MP157A from Engicam.

General features:
- STM32MP157A
- Up to 1GB DDR3L
- 4GB eMMC
- 10/100 Ethernet
- USB 2.0 Host/OTG
- I2S
- MIPI DSI to LVDS
- rest of STM32MP157A features

i.Core STM32MP1 needs to mount on top of Engicam baseboards
for creating complete platform solutions.

Add support for it.

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-icore-stm32mp1.dtsi b/arch/arm/boot/dts/stm32mp157a-icore-stm32mp1.dtsi
new file mode 100644 (file)
index 0000000..01166cc
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp157a-icore-stm32mp1.dtsi
@@ -0,0 +1,196 @@
+// 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,icore-stm32mp1", "st,stm32mp157";
+
+       memory@c0000000 {
+               device_type = "memory";
+               reg = <0xc0000000 0x20000000>;
+       };
+
+       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;
+               };
+       };
+
+       vddcore: regulator-vddcore {
+               compatible = "regulator-fixed";
+               regulator-name = "vddcore";
+               regulator-min-microvolt = <1200000>;
+               regulator-max-microvolt = <1200000>;
+               regulator-always-on;
+       };
+
+       vdd: regulator-vdd {
+               compatible = "regulator-fixed";
+               regulator-name = "vdd";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+       };
+
+       vdd_usb: regulator-vdd-usb {
+               compatible = "regulator-fixed";
+               regulator-name = "vdd_usb";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+       };
+
+       vdda: regulator-vdda {
+               compatible = "regulator-fixed";
+               regulator-name = "vdda";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+       };
+
+       vdd_ddr: regulator-vdd-ddr {
+               compatible = "regulator-fixed";
+               regulator-name = "vdd_ddr";
+               regulator-min-microvolt = <1350000>;
+               regulator-max-microvolt = <1350000>;
+               regulator-always-on;
+       };
+
+       vtt_ddr: regulator-vtt-ddr {
+               compatible = "regulator-fixed";
+               regulator-name = "vtt_ddr";
+               regulator-min-microvolt = <675000>;
+               regulator-max-microvolt = <675000>;
+               regulator-always-on;
+               vin-supply = <&vdd>;
+       };
+
+       vref_ddr: regulator-vref-ddr {
+               compatible = "regulator-fixed";
+               regulator-name = "vref_ddr";
+               regulator-min-microvolt = <675000>;
+               regulator-max-microvolt = <675000>;
+               regulator-always-on;
+               vin-supply = <&vdd>;
+       };
+
+       vdd_sd: regulator-vdd-sd {
+               compatible = "regulator-fixed";
+               regulator-name = "vdd_sd";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+       };
+
+       v3v3: regulator-v3v3 {
+               compatible = "regulator-fixed";
+               regulator-name = "v3v3";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+       };
+
+       v2v8: regulator-v2v8 {
+               compatible = "regulator-fixed";
+               regulator-name = "v2v8";
+               regulator-min-microvolt = <2800000>;
+               regulator-max-microvolt = <2800000>;
+               regulator-always-on;
+               vin-supply = <&v3v3>;
+       };
+
+       v1v8: regulator-v1v8 {
+               compatible = "regulator-fixed";
+               regulator-name = "v1v8";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+               regulator-always-on;
+               vin-supply = <&v3v3>;
+       };
+};
+
+&dts {
+       status = "okay";
+};
+
+&i2c2 {
+       i2c-scl-falling-time-ns = <20>;
+       i2c-scl-rising-time-ns = <185>;
+       pinctrl-names = "default", "sleep";
+       pinctrl-0 = <&i2c2_pins_a>;
+       pinctrl-1 = <&i2c2_sleep_pins_a>;
+       status = "okay";
+};
+
+&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";
+};