ARM: dts: stm32: Add Stinger96 board support

Stinger96 is a 96Boards IoT Extended edition board designed and
manufactured by Shiratech solutions based on STM32MP1 SoC. Following
are the features of this board:

* 256MB DDR
* 125MB NAND Flash
* Onboard BG96 modem
* 1x uSD
* 2x USB (1 available as external connector and another connected to BG96)
* 1x SPI
* 1x PCM
* 2x UART (apart from serial console)
* 2x I2C (apart from one connected to PMIC)

Following peripherals are tested and known to work:

* BG96 modem
* 1x I2C (LS-I2C0)
* 1x SPI
* 1x UART (LS-UART0)
* USB (Only Gadget mode)
* uSD

More information about this board can be found in Shiratech website:
https://www.shiratech-solutions.com/products/stinger96/

Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index f43467b..966b81d 100644 (file)
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1030,6 +1030,7 @@ dtb-$(CONFIG_ARCH_STM32) += \
        stm32h743i-disco.dtb \
        stm32mp157a-avenger96.dtb \
        stm32mp157a-dk1.dtb \
+       stm32mp157a-stinger96.dtb \
        stm32mp157c-dhcom-pdk2.dtb \
        stm32mp157c-dk2.dtb \
        stm32mp157c-ed1.dtb \

diff --git a/arch/arm/boot/dts/stm32mp157a-stinger96.dts b/arch/arm/boot/dts/stm32mp157a-stinger96.dts
new file mode 100644 (file)
index 0000000..249a538
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp157a-stinger96.dts
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2020 Manivannan Sadhasivam
+ */
+
+/dts-v1/;
+#include "stm32mp157a-stinger96.dtsi"
+
+/ {
+       model = "Shiratech STM32MP157A Stinger96 board";
+       compatible = "shiratech,stm32mp157a-stinger96", "st,stm32mp157";
+};

diff --git a/arch/arm/boot/dts/stm32mp157a-stinger96.dtsi b/arch/arm/boot/dts/stm32mp157a-stinger96.dtsi
new file mode 100644 (file)
index 0000000..58275bc
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp157a-stinger96.dtsi
@@ -0,0 +1,342 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2020 Manivannan Sadhasivam
+ */
+
+/dts-v1/;
+
+#include "stm32mp157.dtsi"
+#include "stm32mp15-pinctrl.dtsi"
+#include "stm32mp15xxac-pinctrl.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/mfd/st,stpmic1.h>
+
+/ {
+       aliases {
+               mmc0 = &sdmmc1;
+               serial0 = &uart4;
+               serial1 = &uart7;
+               serial2 = &usart2;
+               spi0 = &spi4;
+       };
+
+       chosen {
+               stdout-path = "serial1:115200n8";
+       };
+
+       memory@c0000000 {
+               device_type = "memory";
+               reg = <0xc0000000 0x10000000>;
+       };
+
+       led {
+               compatible = "gpio-leds";
+
+               led1 {
+                       label = "green:user1";
+                       gpios = <&gpioa 13 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "heartbeat";
+                       default-state = "off";
+               };
+
+               led2 {
+                       label = "green:user2";
+                       gpios = <&gpioh 3 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "mmc0";
+                       default-state = "off";
+               };
+
+               led3 {
+                       label = "green:user3";
+                       gpios = <&gpioh 2 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "mmc1";
+                       default-state = "off";
+               };
+
+               led4 {
+                       label = "green:user4";
+                       gpios = <&gpiof 12 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "none";
+                       default-state = "off";
+                       panic-indicator;
+               };
+       };
+
+       sd_switch: regulator-sd_switch {
+               compatible = "regulator-gpio";
+               regulator-name = "sd_switch";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <2900000>;
+               regulator-type = "voltage";
+               regulator-always-on;
+
+               gpios = <&gpioa 8 GPIO_ACTIVE_HIGH>;
+               gpios-states = <0>;
+               states = <1800000 0x1>,
+                        <2900000 0x0>;
+       };
+};
+
+/* Only headless mode is supported */
+&gpu {
+       status = "disabled";
+};
+
+/* LS-I2C0 */
+&i2c2 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c2_pins_a>;
+       i2c-scl-rising-time-ns = <1000>;
+       i2c-scl-falling-time-ns = <300>;
+       status = "okay";
+       /delete-property/dmas;
+       /delete-property/dma-names;
+};
+
+&i2c4 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c4_pins_a>;
+       i2c-scl-rising-time-ns = <185>;
+       i2c-scl-falling-time-ns = <20>;
+       status = "okay";
+       /delete-property/dmas;
+       /delete-property/dma-names;
+
+       pmic: stpmic@33 {
+               compatible = "st,stpmic1";
+               reg = <0x33>;
+               interrupts-extended = <&gpioa 0 IRQ_TYPE_EDGE_FALLING>;
+               interrupt-controller;
+               #interrupt-cells = <2>;
+               status = "okay";
+
+               regulators {
+                       compatible = "st,stpmic1-regulators";
+
+                       ldo1-supply = <&v3v3>;
+                       ldo2-supply = <&v3v3>;
+                       ldo3-supply = <&vdd_ddr>;
+                       ldo5-supply = <&v3v3>;
+                       ldo6-supply = <&v3v3>;
+                       pwr_sw1-supply = <&bst_out>;
+                       pwr_sw2-supply = <&bst_out>;
+
+                       vddcore: buck1 {
+                               regulator-name = "vddcore";
+                               regulator-min-microvolt = <1200000>;
+                               regulator-max-microvolt = <1350000>;
+                               regulator-always-on;
+                               regulator-initial-mode = <0>;
+                               regulator-over-current-protection;
+                       };
+
+                       vdd_ddr: buck2 {
+                               regulator-name = "vdd_ddr";
+                               regulator-min-microvolt = <1500000>;
+                               regulator-max-microvolt = <1500000>;
+                               regulator-always-on;
+                               regulator-initial-mode = <0>;
+                               regulator-over-current-protection;
+                       };
+
+                       vdd: buck3 {
+                               regulator-name = "vdd";
+                               regulator-min-microvolt = <1800000>;
+                               regulator-max-microvolt = <1800000>;
+                               regulator-always-on;
+                               st,mask-reset;
+                               regulator-initial-mode = <0>;
+                               regulator-over-current-protection;
+                       };
+
+                       v3v3: buck4 {
+                               regulator-name = "v3v3";
+                               regulator-min-microvolt = <3300000>;
+                               regulator-max-microvolt = <3300000>;
+                               regulator-always-on;
+                               regulator-over-current-protection;
+                               regulator-initial-mode = <0>;
+                       };
+
+                       vdda: ldo1 {
+                               regulator-name = "vdda";
+                               regulator-min-microvolt = <1800000>;
+                               regulator-max-microvolt = <1800000>;
+                               regulator-always-on;
+                               interrupts = <IT_CURLIM_LDO1 0>;
+                       };
+
+                       v2v9: ldo2 {
+                               regulator-name = "v2v9";
+                               regulator-min-microvolt = <2900000>;
+                               regulator-max-microvolt = <2900000>;
+                               regulator-always-on;
+                               interrupts = <IT_CURLIM_LDO2 0>;
+                       };
+
+                       vtt_ddr: ldo3 {
+                               regulator-name = "vtt_ddr";
+                               regulator-min-microvolt = <500000>;
+                               regulator-max-microvolt = <750000>;
+                               regulator-always-on;
+                               regulator-over-current-protection;
+                       };
+
+                       vdd_usb: ldo4 {
+                               regulator-name = "vdd_usb";
+                               regulator-min-microvolt = <3300000>;
+                               regulator-max-microvolt = <3300000>;
+                               interrupts = <IT_CURLIM_LDO4 0>;
+                       };
+
+                       vdd_sd: ldo5 {
+                               regulator-name = "vdd_sd";
+                               regulator-min-microvolt = <2900000>;
+                               regulator-max-microvolt = <2900000>;
+                               interrupts = <IT_CURLIM_LDO5 0>;
+                               regulator-boot-on;
+                       };
+
+                       v1v8: ldo6 {
+                               regulator-name = "v1v8";
+                               regulator-min-microvolt = <1800000>;
+                               regulator-max-microvolt = <1800000>;
+                               regulator-always-on;
+                               interrupts = <IT_CURLIM_LDO6 0>;
+                       };
+
+                       vref_ddr: vref_ddr {
+                               regulator-name = "vref_ddr";
+                               regulator-always-on;
+                               regulator-over-current-protection;
+                       };
+
+                       bst_out: boost {
+                               regulator-name = "bst_out";
+                               interrupts = <IT_OCP_BOOST 0>;
+                       };
+
+                       vbus_otg: pwr_sw1 {
+                               regulator-name = "vbus_otg";
+                               interrupts = <IT_OCP_OTG 0>;
+                               regulator-active-discharge;
+                       };
+
+                       vbus_sw: pwr_sw2 {
+                               regulator-name = "vbus_sw";
+                               interrupts = <IT_OCP_SWOUT 0>;
+                               regulator-active-discharge;
+                       };
+               };
+
+               onkey {
+                       compatible = "st,stpmic1-onkey";
+                       interrupts = <IT_PONKEY_F 0>, <IT_PONKEY_R 1>;
+                       interrupt-names = "onkey-falling", "onkey-rising";
+                       status = "okay";
+               };
+
+               watchdog {
+                       compatible = "st,stpmic1-wdt";
+                       status = "disabled";
+               };
+       };
+};
+
+&iwdg2 {
+       timeout-sec = <32>;
+       status = "okay";
+};
+
+&pwr_regulators {
+       vdd-supply = <&vdd>;
+       vdd_3v3_usbfs-supply = <&vdd_usb>;
+};
+
+&rng1 {
+       status = "okay";
+};
+
+&rtc {
+       status = "okay";
+};
+
+&sdmmc1 {
+       pinctrl-names = "default", "opendrain", "sleep";
+       pinctrl-0 = <&sdmmc1_b4_pins_a &sdmmc1_dir_pins_b>;
+       pinctrl-1 = <&sdmmc1_b4_od_pins_a &sdmmc1_dir_pins_b>;
+       pinctrl-2 = <&sdmmc1_b4_sleep_pins_a &sdmmc1_dir_sleep_pins_b>;
+       broken-cd;
+       disable-wp;
+       st,sig-dir;
+       st,neg-edge;
+       st,use-ckin;
+       bus-width = <4>;
+       vmmc-supply = <&vdd_sd>;
+       vqmmc-supply = <&sd_switch>;
+       status = "okay";
+};
+
+/* LS-SPI0 */
+&spi4 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&spi4_pins_a>;
+       cs-gpios = <&gpioe 11 GPIO_ACTIVE_HIGH>;
+       status = "okay";
+};
+
+/* BG96 */
+&usart2 {
+       pinctrl-names = "default", "sleep";
+       pinctrl-0 = <&usart2_pins_b>;
+       pinctrl-1 = <&usart2_sleep_pins_b>;
+       st,hw-flow-ctrl;
+       status = "okay";
+};
+
+/* LS-UART0 */
+&uart4 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart4_pins_c>;
+       st,hw-flow-ctrl;
+       status = "okay";
+};
+
+/* Debug console */
+&uart7 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart7_pins_b>;
+       status = "okay";
+};
+
+&usbh_ehci {
+       phys = <&usbphyc_port0>;
+       phy-names = "usb";
+       status = "okay";
+};
+
+&usbotg_hs {
+       dr_mode = "peripheral";
+       pinctrl-0 = <&usbotg_hs_pins_a>;
+       pinctrl-names = "default";
+       phy-names = "usb2-phy";
+       phys = <&usbphyc_port1 0>;
+       vbus-supply = <&vbus_otg>;
+       status = "okay";
+};
+
+&usbphyc {
+       status = "okay";
+};
+
+&usbphyc_port0 {
+       phy-supply = <&vdd_usb>;
+       vdda1v1-supply = <&reg11>;
+       vdda1v8-supply = <&reg18>;
+};
+
+&usbphyc_port1 {
+       phy-supply = <&vdd_usb>;
+       vdda1v1-supply = <&reg11>;
+       vdda1v8-supply = <&reg18>;
+};