From: dillon min <[email protected]>

All these files are add for support rt-thread art-pi board

the detail board information can be found at:
https://art-pi.gitee.io/website/

board resources:
- stm32h750xbh6 128k flash, 1024k sram
- 32MiB sdram
- 16MiB spi flash
- 8MiB qspi flash
- onboard wifi, bt, fm

Add following changes to sync with kernel device tree files:
- add stm32h7-pinctrl.dtsi to include pin defines for all stm32h743/50 boards
- add stm32h7(5/3)0-pinctrl.dtsi
- move gpio(a..k) register defines to stm32h743.dtsi, sync with kernel
- introduce stm32h750i-art-pi-u-boot.dtsi for sdram parameters, fmc pins

Signed-off-by: dillon min <[email protected]>
Reviewed-by: Patrice Chotard <[email protected]>
---
v3:
- remove "for STMicroelectronics." from arch/arm/dts/stm32h750-pinctrl.dtsi
- correct misspelling parameters

 arch/arm/dts/Makefile                      |   3 +-
 arch/arm/dts/stm32h7-pinctrl.dtsi          | 340 +++++++++++++++++++++++++++++
 arch/arm/dts/stm32h743-pinctrl.dtsi        | 307 +-------------------------
 arch/arm/dts/stm32h743.dtsi                | 168 +++++++++++++-
 arch/arm/dts/stm32h750-pinctrl.dtsi        |  11 +
 arch/arm/dts/stm32h750.dtsi                |   5 +
 arch/arm/dts/stm32h750i-art-pi-u-boot.dtsi |  81 +++++++
 arch/arm/dts/stm32h750i-art-pi.dts         | 188 ++++++++++++++++
 include/dt-bindings/memory/stm32-sdram.h   |   2 +
 9 files changed, 799 insertions(+), 306 deletions(-)
 create mode 100644 arch/arm/dts/stm32h7-pinctrl.dtsi
 create mode 100644 arch/arm/dts/stm32h750-pinctrl.dtsi
 create mode 100644 arch/arm/dts/stm32h750.dtsi
 create mode 100644 arch/arm/dts/stm32h750i-art-pi-u-boot.dtsi
 create mode 100644 arch/arm/dts/stm32h750i-art-pi.dts

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index c671082..0f54801 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -454,7 +454,8 @@ dtb-$(CONFIG_STM32F7) += stm32f746-disco.dtb \
        stm32f769-disco.dtb \
        stm32746g-eval.dtb
 dtb-$(CONFIG_STM32H7) += stm32h743i-disco.dtb \
-       stm32h743i-eval.dtb
+       stm32h743i-eval.dtb \
+       stm32h750i-art-pi.dtb
 
 dtb-$(CONFIG_MACH_SUN4I) += \
        sun4i-a10-a1000.dtb \
diff --git a/arch/arm/dts/stm32h7-pinctrl.dtsi 
b/arch/arm/dts/stm32h7-pinctrl.dtsi
new file mode 100644
index 0000000..ebfd165
--- /dev/null
+++ b/arch/arm/dts/stm32h7-pinctrl.dtsi
@@ -0,0 +1,340 @@
+/*
+ * Copyright 2017 - Alexandre Torgue <[email protected]>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This file is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <dt-bindings/pinctrl/stm32-pinfunc.h>
+
+&pinctrl {
+
+       gpioa: gpio@58020000 {
+               status = "okay";
+               ngpios = <16>;
+               gpio-ranges = <&pinctrl 0 0 16>;
+       };
+
+       gpiob: gpio@58020400 {
+               status = "okay";
+               ngpios = <16>;
+               gpio-ranges = <&pinctrl 0 16 16>;
+       };
+
+       gpioc: gpio@58020800 {
+               status = "okay";
+               ngpios = <16>;
+               gpio-ranges = <&pinctrl 0 32 16>;
+       };
+
+       gpiod: gpio@58020c00 {
+               status = "okay";
+               ngpios = <16>;
+               gpio-ranges = <&pinctrl 0 48 16>;
+       };
+
+       gpioe: gpio@58021000 {
+               status = "okay";
+               ngpios = <16>;
+               gpio-ranges = <&pinctrl 0 64 16>;
+       };
+
+       gpiof: gpio@58021400 {
+               status = "okay";
+               ngpios = <16>;
+               gpio-ranges = <&pinctrl 0 80 16>;
+       };
+
+       gpiog: gpio@58021800 {
+               status = "okay";
+               ngpios = <16>;
+               gpio-ranges = <&pinctrl 0 96 16>;
+       };
+
+       gpioh: gpio@58021c00 {
+               status = "okay";
+               ngpios = <16>;
+               gpio-ranges = <&pinctrl 0 112 16>;
+       };
+
+       gpioi: gpio@58022000 {
+               status = "okay";
+               ngpios = <16>;
+               gpio-ranges = <&pinctrl 0 128 16>;
+       };
+
+       gpioj: gpio@58022400 {
+               status = "okay";
+               ngpios = <16>;
+               gpio-ranges = <&pinctrl 0 144 16>;
+       };
+
+       gpiok: gpio@58022800 {
+               status = "okay";
+               ngpios = <8>;
+               gpio-ranges = <&pinctrl 0 160 8>;
+       };
+
+       i2c1_pins_a: i2c1-0 {
+               pins {
+                       pinmux = <STM32_PINMUX('B', 6, AF4)>, /* I2C1_SCL */
+                                <STM32_PINMUX('B', 7, AF4)>; /* I2C1_SDA */
+                       bias-disable;
+                       drive-open-drain;
+                       slew-rate = <0>;
+               };
+       };
+
+       ethernet_rmii: rmii-0 {
+               pins {
+                       pinmux = <STM32_PINMUX('G', 11, AF11)>,
+                                <STM32_PINMUX('G', 13, AF11)>,
+                                <STM32_PINMUX('G', 12, AF11)>,
+                                <STM32_PINMUX('C', 4, AF11)>,
+                                <STM32_PINMUX('C', 5, AF11)>,
+                                <STM32_PINMUX('A', 7, AF11)>,
+                                <STM32_PINMUX('C', 1, AF11)>,
+                                <STM32_PINMUX('A', 2, AF11)>,
+                                <STM32_PINMUX('A', 1, AF11)>;
+                       slew-rate = <2>;
+               };
+       };
+
+       sdmmc1_b4_pins_a: sdmmc1-b4-0 {
+               pins {
+                       pinmux = <STM32_PINMUX('C', 8, AF12)>, /* SDMMC1_D0 */
+                                <STM32_PINMUX('C', 9, AF12)>, /* SDMMC1_D1 */
+                                <STM32_PINMUX('C', 10, AF12)>, /* SDMMC1_D2 */
+                                <STM32_PINMUX('C', 11, AF12)>, /* SDMMC1_D3 */
+                                <STM32_PINMUX('C', 12, AF12)>, /* SDMMC1_CK */
+                                <STM32_PINMUX('D', 2, AF12)>; /* SDMMC1_CMD */
+                       slew-rate = <3>;
+                       drive-push-pull;
+                       bias-disable;
+               };
+       };
+
+       sdmmc1_b4_od_pins_a: sdmmc1-b4-od-0 {
+               pins1 {
+                       pinmux = <STM32_PINMUX('C', 8, AF12)>, /* SDMMC1_D0 */
+                                <STM32_PINMUX('C', 9, AF12)>, /* SDMMC1_D1 */
+                                <STM32_PINMUX('C', 10, AF12)>, /* SDMMC1_D2 */
+                                <STM32_PINMUX('C', 11, AF12)>, /* SDMMC1_D3 */
+                                <STM32_PINMUX('C', 12, AF12)>; /* SDMMC1_CK */
+                       slew-rate = <3>;
+                       drive-push-pull;
+                       bias-disable;
+               };
+               pins2{
+                       pinmux = <STM32_PINMUX('D', 2, AF12)>; /* SDMMC1_CMD */
+                       slew-rate = <3>;
+                       drive-open-drain;
+                       bias-disable;
+               };
+       };
+
+       sdmmc1_b4_sleep_pins_a: sdmmc1-b4-sleep-0 {
+               pins {
+                       pinmux = <STM32_PINMUX('C', 8, ANALOG)>, /* SDMMC1_D0 */
+                                <STM32_PINMUX('C', 9, ANALOG)>, /* SDMMC1_D1 */
+                                <STM32_PINMUX('C', 10, ANALOG)>, /* SDMMC1_D2 
*/
+                                <STM32_PINMUX('C', 11, ANALOG)>, /* SDMMC1_D3 
*/
+                                <STM32_PINMUX('C', 12, ANALOG)>, /* SDMMC1_CK 
*/
+                                <STM32_PINMUX('D', 2, ANALOG)>; /* SDMMC1_CMD 
*/
+               };
+       };
+
+       sdmmc2_b4_pins_a: sdmmc2-b4-0 {
+               pins {
+                       pinmux = <STM32_PINMUX('B', 14, AF9)>, /* SDMMC1_D0 */
+                                <STM32_PINMUX('B', 15, AF9)>, /* SDMMC1_D1 */
+                                <STM32_PINMUX('B', 3, AF9)>, /* SDMMC1_D2 */
+                                <STM32_PINMUX('B', 4, AF9)>, /* SDMMC1_D3 */
+                                <STM32_PINMUX('D', 6, AF11)>, /* SDMMC1_CK */
+                                <STM32_PINMUX('D', 7, AF11)>; /* SDMMC1_CMD */
+                       slew-rate = <3>;
+                       drive-push-pull;
+                       bias-disable;
+               };
+       };
+
+       sdmmc2_b4_od_pins_a: sdmmc2-b4-od-0 {
+               pins1 {
+                       pinmux = <STM32_PINMUX('B', 14, AF9)>, /* SDMMC2_D0 */
+                                <STM32_PINMUX('B', 15, AF9)>, /* SDMMC1_D1 */
+                                <STM32_PINMUX('B', 3, AF9)>, /* SDMMC1_D2 */
+                                <STM32_PINMUX('B', 4, AF9)>, /* SDMMC1_D3 */
+                                <STM32_PINMUX('D', 6, AF11)>; /* SDMMC1_CK */
+                       slew-rate = <3>;
+                       drive-push-pull;
+                       bias-disable;
+               };
+               pins2{
+                       pinmux = <STM32_PINMUX('D', 7, AF11)>; /* SDMMC1_CMD */
+                       slew-rate = <3>;
+                       drive-open-drain;
+                       bias-disable;
+               };
+       };
+
+       sdmmc2_b4_sleep_pins_a: sdmmc2-b4-sleep-0 {
+               pins {
+                       pinmux = <STM32_PINMUX('B', 14, ANALOG)>, /* SDMMC1_D0 
*/
+                                <STM32_PINMUX('B', 15, ANALOG)>, /* SDMMC1_D1 
*/
+                                <STM32_PINMUX('B', 3, ANALOG)>, /* SDMMC1_D2 */
+                                <STM32_PINMUX('B', 4, ANALOG)>, /* SDMMC1_D3 */
+                                <STM32_PINMUX('D', 6, ANALOG)>, /* SDMMC1_CK */
+                                <STM32_PINMUX('D', 7, ANALOG)>; /* SDMMC1_CMD 
*/
+               };
+       };
+
+       sdmmc1_dir_pins_a: sdmmc1-dir-0 {
+               pins1 {
+                       pinmux = <STM32_PINMUX('C', 6, AF8)>, /* SDMMC1_D0DIR */
+                                <STM32_PINMUX('C', 7, AF8)>, /* SDMMC1_D123DIR 
*/
+                                <STM32_PINMUX('B', 9, AF7)>; /* SDMMC1_CDIR */
+                       slew-rate = <3>;
+                       drive-push-pull;
+                       bias-pull-up;
+               };
+               pins2{
+                       pinmux = <STM32_PINMUX('B', 8, AF7)>; /* SDMMC1_CKIN */
+                       bias-pull-up;
+               };
+       };
+
+       sdmmc1_dir_sleep_pins_a: sdmmc1-dir-sleep-0 {
+               pins {
+                       pinmux = <STM32_PINMUX('C', 6, ANALOG)>, /* 
SDMMC1_D0DIR */
+                                <STM32_PINMUX('C', 7, ANALOG)>, /* 
SDMMC1_D123DIR */
+                                <STM32_PINMUX('B', 9, ANALOG)>, /* SDMMC1_CDIR 
*/
+                                <STM32_PINMUX('B', 8, ANALOG)>; /* SDMMC1_CKIN 
*/
+               };
+       };
+
+       usart1_pins: usart1-0 {
+               pins1 {
+                       pinmux = <STM32_PINMUX('B', 14, AF4)>; /* USART1_TX */
+                       bias-disable;
+                       drive-push-pull;
+                       slew-rate = <0>;
+               };
+               pins2 {
+                       pinmux = <STM32_PINMUX('B', 15, AF4)>; /* USART1_RX */
+                       bias-disable;
+               };
+       };
+
+       usart2_pins: usart2-0 {
+               pins1 {
+                       pinmux = <STM32_PINMUX('D', 5, AF7)>; /* USART2_TX */
+                       bias-disable;
+                       drive-push-pull;
+                       slew-rate = <0>;
+               };
+               pins2 {
+                       pinmux = <STM32_PINMUX('D', 6, AF7)>; /* USART2_RX */
+                       bias-disable;
+               };
+       };
+
+       usart3_pins: usart3-0 {
+               pins1 {
+                       pinmux = <STM32_PINMUX('B', 10, AF7)>, /* USART3_TX */
+                                <STM32_PINMUX('D', 12, AF7)>; /* USART3_RTS_DE 
*/
+                               bias-disable;
+                       drive-push-pull;
+                       slew-rate = <0>;
+               };
+               pins2 {
+                       pinmux = <STM32_PINMUX('B', 11, AF7)>, /* USART3_RX */
+                                <STM32_PINMUX('D', 11, AF7)>; /* 
USART3_CTS_NSS */
+                       bias-disable;
+               };
+       };
+
+       uart4_pins: uart4-0 {
+               pins1 {
+                       pinmux = <STM32_PINMUX('A', 0, AF8)>; /* UART4_TX */
+                       bias-disable;
+                       drive-push-pull;
+                       slew-rate = <0>;
+               };
+               pins2 {
+                       pinmux = <STM32_PINMUX('I', 9, AF8)>; /* UART4_RX */
+                       bias-disable;
+               };
+       };
+
+       usbotg_hs_pins_a: usbotg-hs-0 {
+                       pins {
+                       pinmux = <STM32_PINMUX('H', 4, AF10)>,  /* ULPI_NXT */
+                                        <STM32_PINMUX('I', 11, AF10)>, /* 
ULPI_DIR> */
+                                        <STM32_PINMUX('C', 0, AF10)>,  /* 
ULPI_STP> */
+                                        <STM32_PINMUX('A', 5, AF10)>,  /* 
ULPI_CK> */
+                                        <STM32_PINMUX('A', 3, AF10)>,  /* 
ULPI_D0> */
+                                        <STM32_PINMUX('B', 0, AF10)>,  /* 
ULPI_D1> */
+                                        <STM32_PINMUX('B', 1, AF10)>,  /* 
ULPI_D2> */
+                                        <STM32_PINMUX('B', 10, AF10)>, /* 
ULPI_D3> */
+                                        <STM32_PINMUX('B', 11, AF10)>, /* 
ULPI_D4> */
+                                        <STM32_PINMUX('B', 12, AF10)>, /* 
ULPI_D5> */
+                                        <STM32_PINMUX('B', 13, AF10)>, /* 
ULPI_D6> */
+                                        <STM32_PINMUX('B', 5, AF10)>;  /* 
ULPI_D7> */
+                       bias-disable;
+                       drive-push-pull;
+                       slew-rate = <2>;
+               };
+       };
+
+       spi1_pins: spi1-0 {
+               pins1 {
+                       pinmux = <STM32_PINMUX('A', 5, AF5)>,
+                               /* SPI1_CLK */
+                                <STM32_PINMUX('B', 5, AF5)>;
+                               /* SPI1_MOSI */
+                       bias-disable;
+                       drive-push-pull;
+                       slew-rate = <2>;
+               };
+               pins2 {
+                       pinmux = <STM32_PINMUX('G', 9, AF5)>;
+                               /* SPI1_MISO */
+                       bias-disable;
+               };
+       };
+};
diff --git a/arch/arm/dts/stm32h743-pinctrl.dtsi 
b/arch/arm/dts/stm32h743-pinctrl.dtsi
index 141083f..6b1e115 100644
--- a/arch/arm/dts/stm32h743-pinctrl.dtsi
+++ b/arch/arm/dts/stm32h743-pinctrl.dtsi
@@ -1,306 +1,11 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
 /*
- * Copyright 2017 - Alexandre Torgue <[email protected]>
- *
- * This file is dual-licensed: you can use it either under the terms
- * of the GPL or the X11 license, at your option. Note that this dual
- * licensing only applies to this file, and not this project as a
- * whole.
- *
- *  a) This file is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This file is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- * Or, alternatively,
- *
- *  b) Permission is hereby granted, free of charge, to any person
- *     obtaining a copy of this software and associated documentation
- *     files (the "Software"), to deal in the Software without
- *     restriction, including without limitation the rights to use,
- *     copy, modify, merge, publish, distribute, sublicense, and/or
- *     sell copies of the Software, and to permit persons to whom the
- *     Software is furnished to do so, subject to the following
- *     conditions:
- *
- *     The above copyright notice and this permission notice shall be
- *     included in all copies or substantial portions of the Software.
- *
- *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
- *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
- *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- *     OTHER DEALINGS IN THE SOFTWARE.
+ * Copyright (C) STMicroelectronics 2017 - All Rights Reserved
+ * Author: Alexandre Torgue  <[email protected]> for STMicroelectronics.
  */
 
-#include <dt-bindings/pinctrl/stm32-pinfunc.h>
+#include "stm32h7-pinctrl.dtsi"
 
-/ {
-       soc {
-               pinctrl: pin-controller {
-                       #address-cells = <1>;
-                       #size-cells = <1>;
-                       compatible = "st,stm32h743-pinctrl";
-                       ranges = <0 0x58020000 0x3000>;
-                       interrupt-parent = <&exti>;
-                       st,syscfg = <&syscfg 0x8>;
-                       pins-are-numbered;
-
-                       gpioa: gpio@58020000 {
-                               gpio-controller;
-                               #gpio-cells = <2>;
-                               reg = <0x0 0x400>;
-                               clocks = <&rcc GPIOA_CK>;
-                               st,bank-name = "GPIOA";
-                               interrupt-controller;
-                               #interrupt-cells = <2>;
-                       };
-
-                       gpiob: gpio@58020400 {
-                               gpio-controller;
-                               #gpio-cells = <2>;
-                               reg = <0x400 0x400>;
-                               clocks = <&rcc GPIOB_CK>;
-                               st,bank-name = "GPIOB";
-                               interrupt-controller;
-                               #interrupt-cells = <2>;
-                       };
-
-                       gpioc: gpio@58020800 {
-                               gpio-controller;
-                               #gpio-cells = <2>;
-                               reg = <0x800 0x400>;
-                               clocks = <&rcc GPIOC_CK>;
-                               st,bank-name = "GPIOC";
-                               interrupt-controller;
-                               #interrupt-cells = <2>;
-                       };
-
-                       gpiod: gpio@58020c00 {
-                               gpio-controller;
-                               #gpio-cells = <2>;
-                               reg = <0xc00 0x400>;
-                               clocks = <&rcc GPIOD_CK>;
-                               st,bank-name = "GPIOD";
-                               interrupt-controller;
-                               #interrupt-cells = <2>;
-                       };
-
-                       gpioe: gpio@58021000 {
-                               gpio-controller;
-                               #gpio-cells = <2>;
-                               reg = <0x1000 0x400>;
-                               clocks = <&rcc GPIOE_CK>;
-                               st,bank-name = "GPIOE";
-                               interrupt-controller;
-                               #interrupt-cells = <2>;
-                       };
-
-                       gpiof: gpio@58021400 {
-                               gpio-controller;
-                               #gpio-cells = <2>;
-                               reg = <0x1400 0x400>;
-                               clocks = <&rcc GPIOF_CK>;
-                               st,bank-name = "GPIOF";
-                               interrupt-controller;
-                               #interrupt-cells = <2>;
-                       };
-
-                       gpiog: gpio@58021800 {
-                               gpio-controller;
-                               #gpio-cells = <2>;
-                               reg = <0x1800 0x400>;
-                               clocks = <&rcc GPIOG_CK>;
-                               st,bank-name = "GPIOG";
-                               interrupt-controller;
-                               #interrupt-cells = <2>;
-                       };
-
-                       gpioh: gpio@58021c00 {
-                               gpio-controller;
-                               #gpio-cells = <2>;
-                               reg = <0x1c00 0x400>;
-                               clocks = <&rcc GPIOH_CK>;
-                               st,bank-name = "GPIOH";
-                               interrupt-controller;
-                               #interrupt-cells = <2>;
-                       };
-
-                       gpioi: gpio@58022000 {
-                               gpio-controller;
-                               #gpio-cells = <2>;
-                               reg = <0x2000 0x400>;
-                               clocks = <&rcc GPIOI_CK>;
-                               st,bank-name = "GPIOI";
-                               interrupt-controller;
-                               #interrupt-cells = <2>;
-                       };
-
-                       gpioj: gpio@58022400 {
-                               gpio-controller;
-                               #gpio-cells = <2>;
-                               reg = <0x2400 0x400>;
-                               clocks = <&rcc GPIOJ_CK>;
-                               st,bank-name = "GPIOJ";
-                               interrupt-controller;
-                               #interrupt-cells = <2>;
-                       };
-
-                       gpiok: gpio@58022800 {
-                               gpio-controller;
-                               #gpio-cells = <2>;
-                               reg = <0x2800 0x400>;
-                               clocks = <&rcc GPIOK_CK>;
-                               st,bank-name = "GPIOK";
-                               interrupt-controller;
-                               #interrupt-cells = <2>;
-                       };
-
-                       i2c1_pins_a: i2c1-0 {
-                               pins {
-                                       pinmux = <STM32_PINMUX('B', 6, AF4)>, 
/* I2C1_SCL */
-                                                <STM32_PINMUX('B', 7, AF4)>; 
/* I2C1_SDA */
-                                       bias-disable;
-                                       drive-open-drain;
-                                       slew-rate = <0>;
-                               };
-                       };
-
-                       ethernet_rmii: rmii-0 {
-                               pins {
-                                       pinmux = <STM32_PINMUX('G', 11, AF11)>,
-                                                <STM32_PINMUX('G', 13, AF11)>,
-                                                <STM32_PINMUX('G', 12, AF11)>,
-                                                <STM32_PINMUX('C', 4, AF11)>,
-                                                <STM32_PINMUX('C', 5, AF11)>,
-                                                <STM32_PINMUX('A', 7, AF11)>,
-                                                <STM32_PINMUX('C', 1, AF11)>,
-                                                <STM32_PINMUX('A', 2, AF11)>,
-                                                <STM32_PINMUX('A', 1, AF11)>;
-                                       slew-rate = <2>;
-                               };
-                       };
-
-                       sdmmc1_b4_pins_a: sdmmc1-b4-0 {
-                               pins {
-                                       pinmux = <STM32_PINMUX('C', 8, AF12)>, 
/* SDMMC1_D0 */
-                                                <STM32_PINMUX('C', 9, AF12)>, 
/* SDMMC1_D1 */
-                                                <STM32_PINMUX('C', 10, AF12)>, 
/* SDMMC1_D2 */
-                                                <STM32_PINMUX('C', 11, AF12)>, 
/* SDMMC1_D3 */
-                                                <STM32_PINMUX('C', 12, AF12)>, 
/* SDMMC1_CK */
-                                                <STM32_PINMUX('D', 2, AF12)>; 
/* SDMMC1_CMD */
-                                       slew-rate = <3>;
-                                       drive-push-pull;
-                                       bias-disable;
-                               };
-                       };
-
-                       sdmmc1_b4_od_pins_a: sdmmc1-b4-od-0 {
-                               pins1 {
-                                       pinmux = <STM32_PINMUX('C', 8, AF12)>, 
/* SDMMC1_D0 */
-                                                <STM32_PINMUX('C', 9, AF12)>, 
/* SDMMC1_D1 */
-                                                <STM32_PINMUX('C', 10, AF12)>, 
/* SDMMC1_D2 */
-                                                <STM32_PINMUX('C', 11, AF12)>, 
/* SDMMC1_D3 */
-                                                <STM32_PINMUX('C', 12, AF12)>; 
/* SDMMC1_CK */
-                                       slew-rate = <3>;
-                                       drive-push-pull;
-                                       bias-disable;
-                               };
-                               pins2{
-                                       pinmux = <STM32_PINMUX('D', 2, AF12)>; 
/* SDMMC1_CMD */
-                                       slew-rate = <3>;
-                                       drive-open-drain;
-                                       bias-disable;
-                               };
-                       };
-
-                       sdmmc1_b4_sleep_pins_a: sdmmc1-b4-sleep-0 {
-                               pins {
-                                       pinmux = <STM32_PINMUX('C', 8, 
ANALOG)>, /* SDMMC1_D0 */
-                                                <STM32_PINMUX('C', 9, 
ANALOG)>, /* SDMMC1_D1 */
-                                                <STM32_PINMUX('C', 10, 
ANALOG)>, /* SDMMC1_D2 */
-                                                <STM32_PINMUX('C', 11, 
ANALOG)>, /* SDMMC1_D3 */
-                                                <STM32_PINMUX('C', 12, 
ANALOG)>, /* SDMMC1_CK */
-                                                <STM32_PINMUX('D', 2, 
ANALOG)>; /* SDMMC1_CMD */
-                               };
-                       };
-
-                       sdmmc1_dir_pins_a: sdmmc1-dir-0 {
-                               pins1 {
-                                       pinmux = <STM32_PINMUX('C', 6, AF8)>, 
/* SDMMC1_D0DIR */
-                                                <STM32_PINMUX('C', 7, AF8)>, 
/* SDMMC1_D123DIR */
-                                                <STM32_PINMUX('B', 9, AF7)>; 
/* SDMMC1_CDIR */
-                                       slew-rate = <3>;
-                                       drive-push-pull;
-                                       bias-pull-up;
-                               };
-                               pins2{
-                                       pinmux = <STM32_PINMUX('B', 8, AF7)>; 
/* SDMMC1_CKIN */
-                                       bias-pull-up;
-                               };
-                       };
-
-                       sdmmc1_dir_sleep_pins_a: sdmmc1-dir-sleep-0 {
-                               pins {
-                                       pinmux = <STM32_PINMUX('C', 6, 
ANALOG)>, /* SDMMC1_D0DIR */
-                                                <STM32_PINMUX('C', 7, 
ANALOG)>, /* SDMMC1_D123DIR */
-                                                <STM32_PINMUX('B', 9, 
ANALOG)>, /* SDMMC1_CDIR */
-                                                <STM32_PINMUX('B', 8, 
ANALOG)>; /* SDMMC1_CKIN */
-                               };
-                       };
-
-                       usart1_pins: usart1-0 {
-                               pins1 {
-                                       pinmux = <STM32_PINMUX('B', 14, AF4)>; 
/* USART1_TX */
-                                       bias-disable;
-                                       drive-push-pull;
-                                       slew-rate = <0>;
-                               };
-                               pins2 {
-                                       pinmux = <STM32_PINMUX('B', 15, AF4)>; 
/* USART1_RX */
-                                       bias-disable;
-                               };
-                       };
-
-                       usart2_pins: usart2-0 {
-                               pins1 {
-                                       pinmux = <STM32_PINMUX('D', 5, AF7)>; 
/* USART2_TX */
-                                       bias-disable;
-                                       drive-push-pull;
-                                       slew-rate = <0>;
-                               };
-                               pins2 {
-                                       pinmux = <STM32_PINMUX('D', 6, AF7)>; 
/* USART2_RX */
-                                       bias-disable;
-                               };
-                       };
-
-                       usbotg_hs_pins_a: usbotg-hs-0 {
-                               pins {
-                                       pinmux = <STM32_PINMUX('H', 4, AF10)>,  
/* ULPI_NXT */
-                                                        <STM32_PINMUX('I', 11, 
AF10)>, /* ULPI_DIR> */
-                                                        <STM32_PINMUX('C', 0, 
AF10)>,  /* ULPI_STP> */
-                                                        <STM32_PINMUX('A', 5, 
AF10)>,  /* ULPI_CK> */
-                                                        <STM32_PINMUX('A', 3, 
AF10)>,  /* ULPI_D0> */
-                                                        <STM32_PINMUX('B', 0, 
AF10)>,  /* ULPI_D1> */
-                                                        <STM32_PINMUX('B', 1, 
AF10)>,  /* ULPI_D2> */
-                                                        <STM32_PINMUX('B', 10, 
AF10)>, /* ULPI_D3> */
-                                                        <STM32_PINMUX('B', 11, 
AF10)>, /* ULPI_D4> */
-                                                        <STM32_PINMUX('B', 12, 
AF10)>, /* ULPI_D5> */
-                                                        <STM32_PINMUX('B', 13, 
AF10)>, /* ULPI_D6> */
-                                                        <STM32_PINMUX('B', 5, 
AF10)>;  /* ULPI_D7> */
-                                       bias-disable;
-                                       drive-push-pull;
-                                       slew-rate = <2>;
-                               };
-                       };
-               };
-       };
+&pinctrl{
+       compatible = "st,stm32h743-pinctrl";
 };
diff --git a/arch/arm/dts/stm32h743.dtsi b/arch/arm/dts/stm32h743.dtsi
index e4e4723..4b4c0b0 100644
--- a/arch/arm/dts/stm32h743.dtsi
+++ b/arch/arm/dts/stm32h743.dtsi
@@ -99,6 +99,22 @@
                        clocks = <&rcc USART2_CK>;
                };
 
+               usart3: serial@40004800 {
+                       compatible = "st,stm32h7-uart";
+                       reg = <0x40004800 0x400>;
+                       interrupts = <39>;
+                       status = "disabled";
+                       clocks = <&rcc USART3_CK>;
+               };
+
+               uart4: serial@40004c00 {
+                       compatible = "st,stm32h7-uart";
+                       reg = <0x40004c00 0x400>;
+                       interrupts = <52>;
+                       status = "disabled";
+                       clocks = <&rcc UART4_CK>;
+               };
+
                i2c1: i2c@40005400 {
                        compatible = "st,stm32f7-i2c";
                        #address-cells = <1>;
@@ -123,7 +139,7 @@
                        status = "disabled";
                };
 
-               i2c3: i2c@40005C00 {
+               i2c3: i2c@40005c00 {
                        compatible = "st,stm32f7-i2c";
                        #address-cells = <1>;
                        #size-cells = <0>;
@@ -238,7 +254,7 @@
 
                dmamux1: dma-router@40020800 {
                        compatible = "st,stm32h7-dmamux";
-                       reg = <0x40020800 0x1c>;
+                       reg = <0x40020800 0x40>;
                        #dma-cells = <3>;
                        dma-channels = <16>;
                        dma-requests = <128>;
@@ -318,7 +334,7 @@
                        dma-requests = <32>;
                };
 
-               sdmmc1: sdmmc@52007000 {
+               sdmmc1: mmc@52007000 {
                        compatible = "arm,pl18x", "arm,primecell";
                        arm,primecell-periphid = <0x10153180>;
                        reg = <0x52007000 0x1000>;
@@ -332,6 +348,20 @@
                        max-frequency = <120000000>;
                };
 
+               sdmmc2: mmc@48022400 {
+                       compatible = "arm,pl18x", "arm,primecell";
+                       arm,primecell-periphid = <0x10153180>;
+                       reg = <0x48022400 0x400>;
+                       interrupts = <124>;
+                       interrupt-names = "cmd_irq";
+                       clocks = <&rcc SDMMC2_CK>;
+                       clock-names = "apb_pclk";
+                       resets = <&rcc STM32H7_AHB2_RESET(SDMMC2)>;
+                       cap-sd-highspeed;
+                       cap-mmc-highspeed;
+                       max-frequency = <120000000>;
+               };
+
                exti: interrupt-controller@58000000 {
                        compatible = "st,stm32h7-exti";
                        interrupt-controller;
@@ -356,7 +386,7 @@
                        status = "disabled";
                };
 
-               i2c4: i2c@58001C00 {
+               i2c4: i2c@58001c00 {
                        compatible = "st,stm32f7-i2c";
                        #address-cells = <1>;
                        #size-cells = <0>;
@@ -519,6 +549,136 @@
                        snps,pbl = <8>;
                        status = "disabled";
                };
+
+               pinctrl: pin-controller@58020000 {
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+                       ranges = <0 0x58020000 0x3000>;
+                       interrupt-parent = <&exti>;
+                       st,syscfg = <&syscfg 0x8>;
+                       pins-are-numbered;
+
+                       gpioa: gpio@58020000 {
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0x0 0x400>;
+                               clocks = <&rcc GPIOA_CK>;
+                               st,bank-name = "GPIOA";
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+                               status = "disabled";
+                       };
+
+                       gpiob: gpio@58020400 {
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0x400 0x400>;
+                               clocks = <&rcc GPIOB_CK>;
+                               st,bank-name = "GPIOB";
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+                               status = "disabled";
+                       };
+
+                       gpioc: gpio@58020800 {
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0x800 0x400>;
+                               clocks = <&rcc GPIOC_CK>;
+                               st,bank-name = "GPIOC";
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+                               status = "disabled";
+                       };
+
+                       gpiod: gpio@58020c00 {
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0xc00 0x400>;
+                               clocks = <&rcc GPIOD_CK>;
+                               st,bank-name = "GPIOD";
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+                               status = "disabled";
+                       };
+
+                       gpioe: gpio@58021000 {
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0x1000 0x400>;
+                               clocks = <&rcc GPIOE_CK>;
+                               st,bank-name = "GPIOE";
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+                               status = "disabled";
+                       };
+
+                       gpiof: gpio@58021400 {
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0x1400 0x400>;
+                               clocks = <&rcc GPIOF_CK>;
+                               st,bank-name = "GPIOF";
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+                               status = "disabled";
+                       };
+
+                       gpiog: gpio@58021800 {
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0x1800 0x400>;
+                               clocks = <&rcc GPIOG_CK>;
+                               st,bank-name = "GPIOG";
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+                               status = "disabled";
+                       };
+
+                       gpioh: gpio@58021c00 {
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0x1c00 0x400>;
+                               clocks = <&rcc GPIOH_CK>;
+                               st,bank-name = "GPIOH";
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+                               status = "disabled";
+                       };
+
+                       gpioi: gpio@58022000 {
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0x2000 0x400>;
+                               clocks = <&rcc GPIOI_CK>;
+                               st,bank-name = "GPIOI";
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+                               status = "disabled";
+                       };
+
+                       gpioj: gpio@58022400 {
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0x2400 0x400>;
+                               clocks = <&rcc GPIOJ_CK>;
+                               st,bank-name = "GPIOJ";
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+                               status = "disabled";
+                       };
+
+                       gpiok: gpio@58022800 {
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0x2800 0x400>;
+                               clocks = <&rcc GPIOK_CK>;
+                               st,bank-name = "GPIOK";
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+                               status = "disabled";
+                       };
+               };
        };
 };
 
diff --git a/arch/arm/dts/stm32h750-pinctrl.dtsi 
b/arch/arm/dts/stm32h750-pinctrl.dtsi
new file mode 100644
index 0000000..57b7ebe
--- /dev/null
+++ b/arch/arm/dts/stm32h750-pinctrl.dtsi
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2021 - All Rights Reserved
+ * Author: Dillon Min  <[email protected]>
+ */
+
+#include "stm32h7-pinctrl.dtsi"
+
+&pinctrl{
+       compatible = "st,stm32h750-pinctrl";
+};
diff --git a/arch/arm/dts/stm32h750.dtsi b/arch/arm/dts/stm32h750.dtsi
new file mode 100644
index 0000000..99533f3
--- /dev/null
+++ b/arch/arm/dts/stm32h750.dtsi
@@ -0,0 +1,5 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/* Copyright (C) STMicroelectronics 2021 - All Rights Reserved */
+
+#include "stm32h743.dtsi"
+
diff --git a/arch/arm/dts/stm32h750i-art-pi-u-boot.dtsi 
b/arch/arm/dts/stm32h750i-art-pi-u-boot.dtsi
new file mode 100644
index 0000000..326a553
--- /dev/null
+++ b/arch/arm/dts/stm32h750i-art-pi-u-boot.dtsi
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <stm32h7-u-boot.dtsi>
+
+&fmc {
+       /*
+        * Memory configuration from sdram datasheet W9825G6KH
+        * first bank is bank@0
+        * second bank is bank@1
+        */
+       bank1: bank@0 {
+               st,sdram-control = /bits/ 8 <NO_COL_9
+                                            NO_ROW_13
+                                            MWIDTH_16
+                                            BANKS_4
+                                            CAS_2
+                                            SDCLK_3
+                                            RD_BURST_EN
+                                            RD_PIPE_DL_0>;
+               st,sdram-timing = /bits/ 8 <TMRD_2
+                                           TXSR_6
+                                           TRAS_6
+                                           TRC_6
+                                           TRP_2
+                                           TWR_2
+                                           TRCD_2>;
+               st,sdram-refcount = <677>;
+       };
+};
+
+&pinctrl {
+       fmc_pins: fmc@0 {
+               pins {
+                       pinmux = <STM32_PINMUX('D', 0, AF12)>,
+                                <STM32_PINMUX('D', 1, AF12)>,
+                                <STM32_PINMUX('D', 8, AF12)>,
+                                <STM32_PINMUX('D', 9, AF12)>,
+                                <STM32_PINMUX('D',10, AF12)>,
+                                <STM32_PINMUX('D',14, AF12)>,
+                                <STM32_PINMUX('D',15, AF12)>,
+
+                                <STM32_PINMUX('E', 0, AF12)>,
+                                <STM32_PINMUX('E', 1, AF12)>,
+                                <STM32_PINMUX('E', 7, AF12)>,
+                                <STM32_PINMUX('E', 8, AF12)>,
+                                <STM32_PINMUX('E', 9, AF12)>,
+                                <STM32_PINMUX('E',10, AF12)>,
+                                <STM32_PINMUX('E',11, AF12)>,
+                                <STM32_PINMUX('E',12, AF12)>,
+                                <STM32_PINMUX('E',13, AF12)>,
+                                <STM32_PINMUX('E',14, AF12)>,
+                                <STM32_PINMUX('E',15, AF12)>,
+
+                                <STM32_PINMUX('F', 0, AF12)>,
+                                <STM32_PINMUX('F', 1, AF12)>,
+                                <STM32_PINMUX('F', 2, AF12)>,
+                                <STM32_PINMUX('F', 3, AF12)>,
+                                <STM32_PINMUX('F', 4, AF12)>,
+                                <STM32_PINMUX('F', 5, AF12)>,
+                                <STM32_PINMUX('F',11, AF12)>,
+                                <STM32_PINMUX('F',12, AF12)>,
+                                <STM32_PINMUX('F',13, AF12)>,
+                                <STM32_PINMUX('F',14, AF12)>,
+                                <STM32_PINMUX('F',15, AF12)>,
+
+                                <STM32_PINMUX('G', 0, AF12)>,
+                                <STM32_PINMUX('G', 1, AF12)>,
+                                <STM32_PINMUX('G', 2, AF12)>,
+                                <STM32_PINMUX('G', 4, AF12)>,
+                                <STM32_PINMUX('G', 5, AF12)>,
+                                <STM32_PINMUX('G', 8, AF12)>,
+                                <STM32_PINMUX('G',15, AF12)>,
+
+                                <STM32_PINMUX('H', 5, AF12)>,
+                                <STM32_PINMUX('C', 2, AF12)>,
+                                <STM32_PINMUX('C', 3, AF12)>;
+
+                       slew-rate = <3>;
+               };
+       };
+};
diff --git a/arch/arm/dts/stm32h750i-art-pi.dts 
b/arch/arm/dts/stm32h750i-art-pi.dts
new file mode 100644
index 0000000..dd81198
--- /dev/null
+++ b/arch/arm/dts/stm32h750i-art-pi.dts
@@ -0,0 +1,188 @@
+// SPDX-License-Identifier: GPL-2.0+ OR X11
+/*
+ * Copyright 2021 - Dillon Min <[email protected]>
+ *
+ */
+
+/dts-v1/;
+#include "stm32h750.dtsi"
+#include "stm32h750-pinctrl.dtsi"
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+       model = "RT-Thread STM32H750i-ART-PI board";
+       compatible = "st,stm32h750i-art-pi", "st,stm32h750";
+
+       chosen {
+               bootargs = "root=/dev/ram";
+               stdout-path = "serial0:2000000n8";
+       };
+
+       memory@c0000000 {
+               device_type = "memory";
+               reg = <0xc0000000 0x2000000>;
+       };
+
+       reserved-memory {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges;
+
+               linux,cma {
+                       compatible = "shared-dma-pool";
+                       no-map;
+                       size = <0x100000>;
+                       linux,dma-default;
+               };
+       };
+
+       aliases {
+               serial0 = &uart4;
+               serial1 = &usart3;
+       };
+
+       leds {
+               compatible = "gpio-leds";
+               led-red {
+                       gpios = <&gpioi 8 0>;
+               };
+               led-green {
+                       gpios = <&gpioc 15 0>;
+                       linux,default-trigger = "heartbeat";
+               };
+       };
+
+       v3v3: regulator-v3v3 {
+               compatible = "regulator-fixed";
+               regulator-name = "v3v3";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+       };
+
+       wlan_pwr: regulator-wlan {
+               compatible = "regulator-fixed";
+
+               regulator-name = "wl-reg";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+
+               gpios = <&gpioc 13 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+       };
+};
+
+&clk_hse {
+       clock-frequency = <25000000>;
+};
+
+&dma1 {
+       status = "okay";
+};
+
+&dma2 {
+       status = "okay";
+};
+
+&mac {
+       status = "disabled";
+       pinctrl-0       = <&ethernet_rmii>;
+       pinctrl-names   = "default";
+       phy-mode        = "rmii";
+       phy-handle      = <&phy0>;
+
+       mdio0 {
+               #address-cells = <1>;
+               #size-cells = <0>;
+               compatible = "snps,dwmac-mdio";
+               phy0: ethernet-phy@0 {
+                       reg = <0>;
+               };
+       };
+};
+
+&sdmmc1 {
+       pinctrl-names = "default", "opendrain", "sleep";
+       pinctrl-0 = <&sdmmc1_b4_pins_a>;
+       pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
+       pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>;
+       broken-cd;
+       st,neg-edge;
+       bus-width = <4>;
+       vmmc-supply = <&v3v3>;
+       status = "okay";
+};
+
+&sdmmc2 {
+       pinctrl-names = "default", "opendrain", "sleep";
+       pinctrl-0 = <&sdmmc2_b4_pins_a>;
+       pinctrl-1 = <&sdmmc2_b4_od_pins_a>;
+       pinctrl-2 = <&sdmmc2_b4_sleep_pins_a>;
+       broken-cd;
+       non-removable;
+       st,neg-edge;
+       bus-width = <4>;
+       vmmc-supply = <&wlan_pwr>;
+       status = "okay";
+
+       #address-cells = <1>;
+       #size-cells = <0>;
+       brcmf: bcrmf@1 {
+               reg = <1>;
+               compatible = "brcm,bcm4329-fmac";
+       };
+};
+
+&spi1 {
+       status = "okay";
+       pinctrl-0 = <&spi1_pins>;
+       pinctrl-names = "default";
+       cs-gpios = <&gpioa 4 GPIO_ACTIVE_LOW>;
+       dmas = <&dmamux1 37 0x400 0x05>,
+              <&dmamux1 38 0x400 0x05>;
+       dma-names = "rx", "tx";
+
+       flash@0 {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               compatible = "winbond,w25q128", "jedec,spi-nor";
+               reg = <0>;
+               spi-max-frequency = <80000000>;
+
+               partition@0 {
+                       label = "root filesystem";
+                       reg = <0 0x1000000>;
+               };
+       };
+};
+
+&usart2 {
+       pinctrl-0 = <&usart2_pins>;
+       pinctrl-names = "default";
+       status = "disabled";
+};
+
+&usart3 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&usart3_pins>;
+       dmas = <&dmamux1 45 0x400 0x05>,
+              <&dmamux1 46 0x400 0x05>;
+       dma-names = "rx", "tx";
+       st,hw-flow-ctrl;
+       status = "okay";
+
+       bluetooth {
+               compatible = "brcm,bcm43438-bt";
+               host-wakeup-gpios = <&gpioc 0 GPIO_ACTIVE_HIGH>;
+               device-wakeup-gpios = <&gpioi 10 GPIO_ACTIVE_HIGH>;
+               shutdown-gpios = <&gpioi 11 GPIO_ACTIVE_HIGH>;
+               max-speed = <115200>;
+       };
+};
+
+&uart4 {
+       pinctrl-0 = <&uart4_pins>;
+       pinctrl-names = "default";
+       status = "okay";
+};
diff --git a/include/dt-bindings/memory/stm32-sdram.h 
b/include/dt-bindings/memory/stm32-sdram.h
index ab91d2b..90ef2e1 100644
--- a/include/dt-bindings/memory/stm32-sdram.h
+++ b/include/dt-bindings/memory/stm32-sdram.h
@@ -34,8 +34,10 @@
 #define TXSR_1         (1 - 1)
 #define TXSR_6         (6 - 1)
 #define TXSR_7         (7 - 1)
+#define TXSR_8         (8 - 1)
 #define TRAS_1         (1 - 1)
 #define TRAS_4         (4 - 1)
+#define TRAS_6         (6 - 1)
 #define TRC_6          (6 - 1)
 #define TWR_1          (1 - 1)
 #define TWR_2          (2 - 1)
-- 
2.7.4

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