[U-Boot] [PATCH 08/16] arm: stm32: add new architecture for STM32MP family
Patrick Delaunay
patrick.delaunay at st.com
Mon Mar 5 14:24:35 UTC 2018
- add new arch stm32mp for STM32 MPU/Soc based on Cortex A
- support for stm32mp157 SOC
- SPL is used as first boot stage loader
- using driver model for all the drivers, even in SPL
- all security feature are deactivated (ETZC and TZC)
- reused STM32 MCU drivers when it is possible
Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---
MAINTAINERS | 5 ++
arch/arm/Kconfig | 25 +++++-
arch/arm/Makefile | 1 +
arch/arm/mach-stm32mp/Kconfig | 41 +++++++++
arch/arm/mach-stm32mp/Makefile | 10 +++
arch/arm/mach-stm32mp/config.mk | 14 +++
arch/arm/mach-stm32mp/cpu.c | 139 +++++++++++++++++++++++++++++
arch/arm/mach-stm32mp/dram_init.c | 34 +++++++
arch/arm/mach-stm32mp/include/mach/gpio.h | 115 ++++++++++++++++++++++++
arch/arm/mach-stm32mp/include/mach/stm32.h | 27 ++++++
arch/arm/mach-stm32mp/spl.c | 60 +++++++++++++
drivers/gpio/Kconfig | 2 +-
drivers/i2c/Kconfig | 2 +-
drivers/serial/Kconfig | 6 +-
14 files changed, 475 insertions(+), 6 deletions(-)
create mode 100644 arch/arm/mach-stm32mp/Kconfig
create mode 100644 arch/arm/mach-stm32mp/Makefile
create mode 100644 arch/arm/mach-stm32mp/config.mk
create mode 100644 arch/arm/mach-stm32mp/cpu.c
create mode 100644 arch/arm/mach-stm32mp/dram_init.c
create mode 100644 arch/arm/mach-stm32mp/include/mach/gpio.h
create mode 100644 arch/arm/mach-stm32mp/include/mach/stm32.h
create mode 100644 arch/arm/mach-stm32mp/spl.c
diff --git a/MAINTAINERS b/MAINTAINERS
index d2f8c51..9b19019 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -191,6 +191,11 @@ T: git git://git.denx.de/u-boot-stm.git
F: arch/arm/cpu/arm926ejs/spear/
F: arch/arm/include/asm/arch-spear/
+ARM STM STM32MP
+M: Patrick Delaunay <patrick.delaunay at st.com>
+S: Maintained
+F: arch/arm/mach-stm32mp
+
ARM STM STV0991
M: Vikas Manocha <vikas.manocha at st.com>
S: Maintained
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 77cb200..20c3132 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1130,7 +1130,7 @@ config ARCH_UNIPHIER
(formerly, System LSI Business Division of Panasonic Corporation)
config STM32
- bool "Support STM32"
+ bool "Support STMicroelectronics STM32 MCU with cortex M"
select CPU_V7M
select DM
select DM_SERIAL
@@ -1148,6 +1148,27 @@ config ARCH_STI
Support for STMicroelectronics STiH407/10 SoC family.
This SoC is used on Linaro 96Board STiH410-B2260
+config ARCH_STM32MP
+ bool "Support STMicroelectronics STM32MP Socs with cortex A"
+ select BOARD_LATE_INIT
+ select CLK
+ select DM
+ select DM_GPIO
+ select DM_RESET
+ select DM_SERIAL
+ select OF_CONTROL
+ select OF_LIBFDT
+ select PINCTRL
+ select REGMAP
+ select SUPPORT_SPL
+ select SYSCON
+ select SYS_THUMB_BUILD
+ help
+ Support for STM32MP SoC family developed by STMicroelectronics,
+ MPUs based on ARM cortex A core
+ U-BOOT is running in DDR and SPL support is the unsecure First Stage
+ BootLoader (FSBL)
+
config ARCH_ROCKCHIP
bool "Support Rockchip SoCs"
select OF_CONTROL
@@ -1250,6 +1271,8 @@ source "arch/arm/mach-sti/Kconfig"
source "arch/arm/mach-stm32/Kconfig"
+source "arch/arm/mach-stm32mp/Kconfig"
+
source "arch/arm/mach-sunxi/Kconfig"
source "arch/arm/mach-tegra/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 5881fdc..4fa8b38 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -72,6 +72,7 @@ machine-$(CONFIG_ARCH_SOCFPGA) += socfpga
machine-$(CONFIG_ARCH_RMOBILE) += rmobile
machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
machine-$(CONFIG_STM32) += stm32
+machine-$(CONFIG_ARCH_STM32MP) += stm32mp
machine-$(CONFIG_TEGRA) += tegra
machine-$(CONFIG_ARCH_UNIPHIER) += uniphier
machine-$(CONFIG_ARCH_ZYNQ) += zynq
diff --git a/arch/arm/mach-stm32mp/Kconfig b/arch/arm/mach-stm32mp/Kconfig
new file mode 100644
index 0000000..ab94879
--- /dev/null
+++ b/arch/arm/mach-stm32mp/Kconfig
@@ -0,0 +1,41 @@
+if ARCH_STM32MP
+
+config SPL
+ select SPL_BOARD_INIT
+ select SPL_CLK
+ select SPL_DM
+ select SPL_DM_SEQ_ALIAS
+ select SPL_FRAMEWORK
+ select SPL_GPIO_SUPPORT
+ select SPL_LIBCOMMON_SUPPORT
+ select SPL_LIBGENERIC_SUPPORT
+ select SPL_OF_CONTROL
+ select SPL_OF_TRANSLATE
+ select SPL_PINCTRL
+ select SPL_REGMAP
+ select SPL_RESET_SUPPORT
+ select SPL_SERIAL_SUPPORT
+ select SPL_SYSCON
+ imply SPL_LIBDISK_SUPPORT
+
+config SYS_SOC
+ default "stm32mp"
+
+config TARGET_STM32MP1
+ bool "Support stm32mp1xx"
+ select CPU_V7
+ select PINCTRL_STM32
+ select STM32_RESET
+ help
+ target STMicroelectronics SOC STM32MP1 family
+ STMicroelectronics MPU with core ARMv7
+
+config SYS_TEXT_BASE
+ prompt "U-Boot base address"
+ default 0xC0100000
+ help
+ configure the U-Boot base address
+ when DDR driver is used:
+ DDR + 1MB (0xC0100000)
+
+endif
diff --git a/arch/arm/mach-stm32mp/Makefile b/arch/arm/mach-stm32mp/Makefile
new file mode 100644
index 0000000..4620869
--- /dev/null
+++ b/arch/arm/mach-stm32mp/Makefile
@@ -0,0 +1,10 @@
+#
+# Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+#
+# SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
+#
+
+obj-y += cpu.o
+obj-y += dram_init.o
+
+obj-$(CONFIG_SPL_BUILD) += spl.o
diff --git a/arch/arm/mach-stm32mp/config.mk b/arch/arm/mach-stm32mp/config.mk
new file mode 100644
index 0000000..34e59c6
--- /dev/null
+++ b/arch/arm/mach-stm32mp/config.mk
@@ -0,0 +1,14 @@
+#
+# Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+#
+# SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
+#
+
+ALL-$(CONFIG_SPL_BUILD) += spl/u-boot-spl.stm32
+
+MKIMAGEFLAGS_u-boot-spl.stm32 = -T stm32image -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE)
+
+spl/u-boot-spl.stm32: MKIMAGEOUTPUT = spl/u-boot-spl.stm32.log
+
+spl/u-boot-spl.stm32: spl/u-boot-spl.bin FORCE
+ $(call if_changed,mkimage)
diff --git a/arch/arm/mach-stm32mp/cpu.c b/arch/arm/mach-stm32mp/cpu.c
new file mode 100644
index 0000000..7c43dc1
--- /dev/null
+++ b/arch/arm/mach-stm32mp/cpu.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
+ */
+#include <common.h>
+#include <clk.h>
+#include <asm/io.h>
+#include <asm/arch/stm32.h>
+
+void enable_caches(void)
+{
+ /* Enable D-cache. I-cache is already enabled in start.S */
+ dcache_enable();
+}
+
+#if !defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD)
+/**********************************************
+ * Security init
+ *********************************************/
+#define ETZPC_TZMA1_SIZE (STM32_ETZPC_BASE + 0x04)
+#define ETZPC_DECPROT0 (STM32_ETZPC_BASE + 0x10)
+
+#define TZC_GATE_KEEPER (STM32_TZC_BASE + 0x008)
+#define TZC_REGION_ATTRIBUTE0 (STM32_TZC_BASE + 0x110)
+#define TZC_REGION_ID_ACCESS0 (STM32_TZC_BASE + 0x114)
+
+#define TAMP_CR1 (STM32_TAMP_BASE + 0x00)
+
+#define PWR_CR1 (STM32_PWR_BASE + 0x00)
+#define PWR_CR1_DBP BIT(8)
+
+#define RCC_TZCR (STM32_RCC_BASE + 0x00)
+#define RCC_BDCR (STM32_RCC_BASE + 0x0140)
+#define RCC_MP_APB5ENSETR (STM32_RCC_BASE + 0x0208)
+
+#define RCC_BDCR_VSWRST BIT(31)
+#define RCC_BDCR_RTCSRC GENMASK(17, 16)
+
+static void security_init(void)
+{
+ /* Disable the backup domain write protection */
+ /* the protection is enable at each reset by hardware */
+ /* And must be disable by software */
+ setbits_le32(PWR_CR1, PWR_CR1_DBP);
+
+ while (!(readl(PWR_CR1) & PWR_CR1_DBP))
+ ;
+
+ /* If RTC clock isn't enable so this is a cold boot then we need
+ * to reset the backup domain
+ */
+ if (!(readl(RCC_BDCR) & RCC_BDCR_RTCSRC)) {
+ setbits_le32(RCC_BDCR, RCC_BDCR_VSWRST);
+ while (!(readl(RCC_BDCR) & RCC_BDCR_VSWRST))
+ ;
+ clrbits_le32(RCC_BDCR, RCC_BDCR_VSWRST);
+ }
+
+ /* allow non secure access in Write/Read for all peripheral */
+ writel(GENMASK(25, 0), ETZPC_DECPROT0);
+
+ /* Open SYSRAM for no secure access */
+ writel(0x0, ETZPC_TZMA1_SIZE);
+
+ /* enable TZC1 TZC2 clock */
+ writel(BIT(11) | BIT(12), RCC_MP_APB5ENSETR);
+
+ /* Region 0 set to no access by default */
+ /* bit 0 / 16 => nsaid0 read/write Enable
+ * bit 1 / 17 => nsaid1 read/write Enable
+ * ...
+ * bit 15 / 31 => nsaid15 read/write Enable
+ */
+ writel(0xFFFFFFFF, TZC_REGION_ID_ACCESS0);
+ /* bit 30 / 31 => Secure Global Enable : write/read */
+ /* bit 0 / 1 => Region Enable for filter 0/1 */
+ writel(BIT(0) | BIT(1) | BIT(30) | BIT(31), TZC_REGION_ATTRIBUTE0);
+
+ /* Enable Filter 0 and 1 */
+ setbits_le32(TZC_GATE_KEEPER, BIT(0) | BIT(1));
+
+ /* RCC trust zone deactivated */
+ writel(0x0, RCC_TZCR);
+
+ /* TAMP: deactivate the internal tamper
+ * Bit 23 ITAMP8E: monotonic counter overflow
+ * Bit 20 ITAMP5E: RTC calendar overflow
+ * Bit 19 ITAMP4E: HSE monitoring
+ * Bit 18 ITAMP3E: LSE monitoring
+ * Bit 16 ITAMP1E: RTC power domain supply monitoring
+ */
+ writel(0x0, TAMP_CR1);
+}
+
+/**********************************************
+ * Debug init
+ *********************************************/
+#define RCC_DBGCFGR (STM32_RCC_BASE + 0x080C)
+#define RCC_DBGCFGR_DBGCKEN BIT(8)
+
+#define DBGMCU_APB4FZ1 (STM32_DBGMCU_BASE + 0x2C)
+#define DBGMCU_APB4FZ1_IWDG2 BIT(2)
+
+static void dbgmcu_init(void)
+{
+ setbits_le32(RCC_DBGCFGR, RCC_DBGCFGR_DBGCKEN);
+
+ /* Freeze IWDG2 if Cortex-A7 is in debug mode */
+ setbits_le32(DBGMCU_APB4FZ1, DBGMCU_APB4FZ1_IWDG2);
+}
+#endif /* !defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD) */
+
+int arch_cpu_init(void)
+{
+ /* early armv7 timer init: needed for polling */
+ timer_init();
+
+#if !defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD)
+ dbgmcu_init();
+
+ security_init();
+#endif
+
+ return 0;
+}
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+int print_cpuinfo(void)
+{
+ printf("CPU: STM32MP15x\n");
+
+ return 0;
+}
+#endif /* CONFIG_DISPLAY_CPUINFO */
+
+void reset_cpu(ulong addr)
+{
+}
diff --git a/arch/arm/mach-stm32mp/dram_init.c b/arch/arm/mach-stm32mp/dram_init.c
new file mode 100644
index 0000000..ecb4c98
--- /dev/null
+++ b/arch/arm/mach-stm32mp/dram_init.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <ram.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+ struct ram_info ram;
+ struct udevice *dev;
+ int ret;
+
+ ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+ if (ret) {
+ debug("RAM init failed: %d\n", ret);
+ return ret;
+ }
+ ret = ram_get_info(dev, &ram);
+ if (ret) {
+ debug("Cannot get RAM size: %d\n", ret);
+ return ret;
+ }
+ debug("RAM init base=%lx, size=%x\n", ram.base, ram.size);
+
+ gd->ram_size = ram.size;
+
+ return 0;
+}
diff --git a/arch/arm/mach-stm32mp/include/mach/gpio.h b/arch/arm/mach-stm32mp/include/mach/gpio.h
new file mode 100644
index 0000000..5952557
--- /dev/null
+++ b/arch/arm/mach-stm32mp/include/mach/gpio.h
@@ -0,0 +1,115 @@
+/*
+ * (C) Copyright 2016
+ * Vikas Manocha, <vikas.manocha at st.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _STM32_GPIO_H_
+#define _STM32_GPIO_H_
+#include <asm/gpio.h>
+
+enum stm32_gpio_port {
+ STM32_GPIO_PORT_A = 0,
+ STM32_GPIO_PORT_B,
+ STM32_GPIO_PORT_C,
+ STM32_GPIO_PORT_D,
+ STM32_GPIO_PORT_E,
+ STM32_GPIO_PORT_F,
+ STM32_GPIO_PORT_G,
+ STM32_GPIO_PORT_H,
+ STM32_GPIO_PORT_I
+};
+
+enum stm32_gpio_pin {
+ STM32_GPIO_PIN_0 = 0,
+ STM32_GPIO_PIN_1,
+ STM32_GPIO_PIN_2,
+ STM32_GPIO_PIN_3,
+ STM32_GPIO_PIN_4,
+ STM32_GPIO_PIN_5,
+ STM32_GPIO_PIN_6,
+ STM32_GPIO_PIN_7,
+ STM32_GPIO_PIN_8,
+ STM32_GPIO_PIN_9,
+ STM32_GPIO_PIN_10,
+ STM32_GPIO_PIN_11,
+ STM32_GPIO_PIN_12,
+ STM32_GPIO_PIN_13,
+ STM32_GPIO_PIN_14,
+ STM32_GPIO_PIN_15
+};
+
+enum stm32_gpio_mode {
+ STM32_GPIO_MODE_IN = 0,
+ STM32_GPIO_MODE_OUT,
+ STM32_GPIO_MODE_AF,
+ STM32_GPIO_MODE_AN
+};
+
+enum stm32_gpio_otype {
+ STM32_GPIO_OTYPE_PP = 0,
+ STM32_GPIO_OTYPE_OD
+};
+
+enum stm32_gpio_speed {
+ STM32_GPIO_SPEED_2M = 0,
+ STM32_GPIO_SPEED_25M,
+ STM32_GPIO_SPEED_50M,
+ STM32_GPIO_SPEED_100M
+};
+
+enum stm32_gpio_pupd {
+ STM32_GPIO_PUPD_NO = 0,
+ STM32_GPIO_PUPD_UP,
+ STM32_GPIO_PUPD_DOWN
+};
+
+enum stm32_gpio_af {
+ STM32_GPIO_AF0 = 0,
+ STM32_GPIO_AF1,
+ STM32_GPIO_AF2,
+ STM32_GPIO_AF3,
+ STM32_GPIO_AF4,
+ STM32_GPIO_AF5,
+ STM32_GPIO_AF6,
+ STM32_GPIO_AF7,
+ STM32_GPIO_AF8,
+ STM32_GPIO_AF9,
+ STM32_GPIO_AF10,
+ STM32_GPIO_AF11,
+ STM32_GPIO_AF12,
+ STM32_GPIO_AF13,
+ STM32_GPIO_AF14,
+ STM32_GPIO_AF15
+};
+
+struct stm32_gpio_dsc {
+ enum stm32_gpio_port port;
+ enum stm32_gpio_pin pin;
+};
+
+struct stm32_gpio_ctl {
+ enum stm32_gpio_mode mode;
+ enum stm32_gpio_otype otype;
+ enum stm32_gpio_speed speed;
+ enum stm32_gpio_pupd pupd;
+ enum stm32_gpio_af af;
+};
+
+struct stm32_gpio_regs {
+ u32 moder; /* GPIO port mode */
+ u32 otyper; /* GPIO port output type */
+ u32 ospeedr; /* GPIO port output speed */
+ u32 pupdr; /* GPIO port pull-up/pull-down */
+ u32 idr; /* GPIO port input data */
+ u32 odr; /* GPIO port output data */
+ u32 bsrr; /* GPIO port bit set/reset */
+ u32 lckr; /* GPIO port configuration lock */
+ u32 afr[2]; /* GPIO alternate function */
+};
+
+struct stm32_gpio_priv {
+ struct stm32_gpio_regs *regs;
+};
+#endif /* _STM32_GPIO_H_ */
diff --git a/arch/arm/mach-stm32mp/include/mach/stm32.h b/arch/arm/mach-stm32mp/include/mach/stm32.h
new file mode 100644
index 0000000..ffbe0b1
--- /dev/null
+++ b/arch/arm/mach-stm32mp/include/mach/stm32.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
+ */
+
+#ifndef _MACH_STM32_H_
+#define _MACH_STM32_H_
+
+/*
+ * Peripheral memory map
+ * only address used before device tree parsing
+ */
+#define STM32_RCC_BASE 0x50000000
+#define STM32_PWR_BASE 0x50001000
+#define STM32_DBGMCU_BASE 0x50081000
+#define STM32_TZC_BASE 0x5C006000
+#define STM32_ETZPC_BASE 0x5C007000
+#define STM32_TAMP_BASE 0x5C00A000
+
+#define STM32_SYSRAM_BASE 0x2FFC0000
+#define STM32_SYSRAM_SIZE SZ_256K
+
+#define STM32_DDR_BASE 0xC0000000
+#define STM32_DDR_SIZE SZ_1G
+
+#endif /* _MACH_STM32_H_ */
diff --git a/arch/arm/mach-stm32mp/spl.c b/arch/arm/mach-stm32mp/spl.c
new file mode 100644
index 0000000..8f5962a
--- /dev/null
+++ b/arch/arm/mach-stm32mp/spl.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <spl.h>
+
+u32 spl_boot_device(void)
+{
+ return BOOT_DEVICE_MMC1;
+}
+
+u32 spl_boot_mode(const u32 boot_device)
+{
+ return MMCSD_MODE_RAW;
+}
+
+void board_init_f(ulong dummy)
+{
+ struct udevice *dev;
+ int ret;
+
+ arch_cpu_init();
+
+ ret = spl_early_init();
+ if (ret) {
+ debug("spl_early_init() failed: %d\n", ret);
+ hang();
+ }
+
+ ret = uclass_get_device(UCLASS_CLK, 0, &dev);
+ if (ret) {
+ debug("Clock init failed: %d\n", ret);
+ return;
+ }
+
+ ret = uclass_get_device(UCLASS_RESET, 0, &dev);
+ if (ret) {
+ debug("Reset init failed: %d\n", ret);
+ return;
+ }
+
+ ret = uclass_get_device(UCLASS_PINCTRL, 0, &dev);
+ if (ret) {
+ debug("%s: Cannot find pinctrl device\n", __func__);
+ return;
+ }
+
+ /* enable console uart printing */
+ preloader_console_init();
+
+ ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+ if (ret) {
+ debug("DRAM init failed: %d\n", ret);
+ return;
+ }
+}
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 34d4409..8239d78 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -229,7 +229,7 @@ config PIC32_GPIO
config STM32F7_GPIO
bool "ST STM32 GPIO driver"
- depends on DM_GPIO && STM32
+ depends on DM_GPIO && (STM32 || ARCH_STM32MP)
default y
help
Device model driver support for STM32 GPIO controller. It should be
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 9d43690..96ee732 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -207,7 +207,7 @@ config SYS_I2C_S3C24X0
config SYS_I2C_STM32F7
bool "STMicroelectronics STM32F7 I2C support"
- depends on (STM32F7 || STM32H7) && DM_I2C
+ depends on (STM32F7 || STM32H7 || ARCH_STM32MP) && DM_I2C
help
Enable this option to add support for STM32 I2C controller
introduced with STM32F7/H7 SoCs. This I2C controller supports :
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 93e602e..8436997 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -577,10 +577,10 @@ config STI_ASC_SERIAL
config STM32_SERIAL
bool "STMicroelectronics STM32 SoCs on-chip UART"
- depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7)
+ depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7 || ARCH_STM32MP)
help
- If you have a machine based on a STM32 F4, F7 or H7 SoC you can
- enable its onboard serial ports, say Y to this option.
+ If you have a machine based on a STM32 F4, F7, H7 or MP1 SOC
+ you can enable its onboard serial ports, say Y to this option.
If unsure, say N.
config ZYNQ_SERIAL
--
2.7.4
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