Merge branch '2022-03-07-add-platforms' into next

- bcm6753 support
- Aspeed GPIO driver
- AM33xx DT-related MMC updates

arch/arm/Kconfig

@@ -617,6 +617,13 @@ config ARCH_BCM63158
 	select OF_CONTROL
 	imply CMD_DM
 
+config ARCH_BCM6753
+	bool "Broadcom BCM6753 family"
+	select CPU_V7A
+	select DM
+	select OF_CONTROL
+	imply CMD_DM
+
 config ARCH_BCM68360
 	bool "Broadcom BCM68360 family"
 	select DM
@@ -2206,6 +2213,7 @@ source "board/armltd/vexpress/Kconfig"
 source "board/armltd/vexpress64/Kconfig"
 source "board/cortina/presidio-asic/Kconfig"
 source "board/broadcom/bcm963158/Kconfig"
+source "board/broadcom/bcm96753ref/Kconfig"
 source "board/broadcom/bcm968360bg/Kconfig"
 source "board/broadcom/bcm968580xref/Kconfig"
 source "board/broadcom/bcmns3/Kconfig"

arch/arm/dts/Makefile

@@ -1104,6 +1104,9 @@ dtb-$(CONFIG_ARCH_BCM63158) += \
 dtb-$(CONFIG_ARCH_BCM68360) += \
 	bcm968360bg.dtb
 
+dtb-$(CONFIG_ARCH_BCM6753) += \
+	bcm96753ref.dtb
+
 dtb-$(CONFIG_ARCH_BCM6858) += \
 	bcm968580xref.dtb
 

arch/arm/dts/am33xx.dtsi

@@ -40,6 +40,9 @@
 		ethernet1 = &cpsw_emac1;
 		spi0 = &spi0;
 		spi1 = &spi1;
+		mmc0 = &mmc1;
+		mmc1 = &mmc2;
+		mmc2 = &mmc3;
 	};
 
 	cpus {
@@ -301,6 +304,35 @@
 			};
 		};
 
+		target-module@47810000 {
+			compatible = "ti,sysc-omap2", "ti,sysc";
+			reg = <0x478102fc 0x4>,
+			      <0x47810110 0x4>,
+			      <0x47810114 0x4>;
+			reg-names = "rev", "sysc", "syss";
+			ti,sysc-mask = <(SYSC_OMAP2_CLOCKACTIVITY |
+					 SYSC_OMAP2_ENAWAKEUP |
+					 SYSC_OMAP2_SOFTRESET |
+					 SYSC_OMAP2_AUTOIDLE)>;
+			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
+					<SYSC_IDLE_NO>,
+					<SYSC_IDLE_SMART>;
+			ti,syss-mask = <1>;
+			clocks = <&l3s_clkctrl AM3_L3S_MMC3_CLKCTRL 0>;
+			clock-names = "fck";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0x0 0x47810000 0x1000>;
+
+			mmc3: mmc@0 {
+			      compatible = "ti,am335-sdhci";
+			      ti,needs-special-reset;
+			      interrupts = <29>;
+			      reg = <0x0 0x1000>;
+			      status = "disabled";
+			};
+		};
+
 		i2c0: i2c@44e0b000 {
 			compatible = "ti,omap4-i2c";
 			#address-cells = <1>;
@@ -357,15 +389,6 @@
 			status = "disabled";
 		};
 
-		mmc3: mmc@47810000 {
-			compatible = "ti,omap4-hsmmc";
-			ti,hwmods = "mmc3";
-			ti,needs-special-reset;
-			interrupts = <29>;
-			reg = <0x47810000 0x1000>;
-			status = "disabled";
-		};
-
 		wdt2: wdt@44e35000 {
 			compatible = "ti,omap3-wdt";
 			ti,hwmods = "wd_timer2";

arch/arm/dts/ast2500.dtsi

@@ -214,6 +214,7 @@
 				reg = <0x1e780000 0x1000>;
 				interrupts = <20>;
 				gpio-ranges = <&pinctrl 0 0 220>;
+				ngpios = <228>;
 				interrupt-controller;
 			};
 

arch/arm/dts/bcm6753.dtsi

@@ -0,0 +1,208 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 Philippe Reynes <philippe.reynes@softathome.com>
+ */
+
+#include "skeleton.dtsi"
+
+/ {
+	compatible = "brcm,bcm6753";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		u-boot,dm-pre-reloc;
+
+		cpu0: cpu@0 {
+			compatible = "arm,cortex-a7";
+			device_type = "cpu";
+			reg = <0x0>;
+			next-level-cache = <&l2>;
+			u-boot,dm-pre-reloc;
+		};
+
+		cpu1: cpu@1 {
+			compatible = "arm,cortex-a7";
+			device_type = "cpu";
+			reg = <0x1>;
+			next-level-cache = <&l2>;
+			u-boot,dm-pre-reloc;
+		};
+
+		cpu2: cpu@2 {
+			compatible = "arm,cortex-a7";
+			device_type = "cpu";
+			reg = <0x2>;
+			next-level-cache = <&l2>;
+			u-boot,dm-pre-reloc;
+		};
+
+		l2: l2-cache0 {
+			compatible = "cache";
+			u-boot,dm-pre-reloc;
+		};
+	};
+
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+		u-boot,dm-pre-reloc;
+
+		periph_osc: periph-osc {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <200000000>;
+			u-boot,dm-pre-reloc;
+		};
+
+		hsspi_pll: hsspi-pll {
+			compatible = "fixed-factor-clock";
+			#clock-cells = <0>;
+			clocks = <&periph_osc>;
+			clock-mult = <2>;
+			clock-div = <1>;
+		};
+
+		refclk50mhz: refclk50mhz {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <50000000>;
+		};
+	};
+
+	ubus {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		u-boot,dm-pre-reloc;
+
+		uart0: serial@ff812000 {
+			compatible = "arm,pl011", "arm,primecell";
+			reg = <0xff812000 0x1000>;
+			clock = <50000000>;
+
+			status = "disabled";
+		};
+
+		wdt1: watchdog@ff800480 {
+			compatible = "brcm,bcm6345-wdt";
+			reg = <0xff800480 0x14>;
+			clocks = <&refclk50mhz>;
+		};
+
+		wdt2: watchdog@ff8004c0 {
+			compatible = "brcm,bcm6345-wdt";
+			reg = <0xff8004c0 0x14>;
+			clocks = <&refclk50mhz>;
+		};
+
+		wdt-reboot {
+			compatible = "wdt-reboot";
+			wdt = <&wdt1>;
+		};
+
+		gpio0: gpio-controller@0xff800500 {
+			compatible = "brcm,bcm6345-gpio";
+			reg = <0xff800500 0x4>,
+			      <0xff800520 0x4>;
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			status = "disabled";
+		};
+
+		gpio1: gpio-controller@0xff800504 {
+			compatible = "brcm,bcm6345-gpio";
+			reg = <0xff800504 0x4>,
+			      <0xff800524 0x4>;
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			status = "disabled";
+		};
+
+		gpio2: gpio-controller@0xff800508 {
+			compatible = "brcm,bcm6345-gpio";
+			reg = <0xff800508 0x4>,
+			      <0xff800528 0x4>;
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			status = "disabled";
+		};
+
+		gpio3: gpio-controller@0xff80050c {
+			compatible = "brcm,bcm6345-gpio";
+			reg = <0xff80050c 0x4>,
+			      <0xff80052c 0x4>;
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			status = "disabled";
+		};
+
+		gpio4: gpio-controller@0xff800510 {
+			compatible = "brcm,bcm6345-gpio";
+			reg = <0xff800510 0x4>,
+			      <0xff800530 0x4>;
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			status = "disabled";
+		};
+
+		gpio5: gpio-controller@0xff800514 {
+			compatible = "brcm,bcm6345-gpio";
+			reg = <0xff800514 0x4>,
+			      <0xff800534 0x4>;
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			status = "disabled";
+		};
+
+		gpio6: gpio-controller@0xff800518 {
+			compatible = "brcm,bcm6345-gpio";
+			reg = <0xff800518 0x4>,
+			      <0xff800538 0x4>;
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			status = "disabled";
+		};
+
+		gpio7: gpio-controller@0xff80051c {
+			compatible = "brcm,bcm6345-gpio";
+			reg = <0xff80051c 0x4>,
+			      <0xff80053c 0x4>;
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			status = "disabled";
+		};
+
+		nand: nand-controller@ff801800 {
+			compatible = "brcm,nand-bcm6753",
+				     "brcm,brcmnand-v5.0",
+				     "brcm,brcmnand";
+			reg-names = "nand", "nand-int-base", "nand-cache";
+			reg = <0xff801800 0x180>,
+			      <0xff802000 0x10>,
+			      <0xff801c00 0x200>;
+			parameter-page-big-endian = <0>;
+
+			status = "disabled";
+		};
+
+		leds: led-controller@ff803000 {
+			compatible = "brcm,bcm6753-leds";
+			reg = <0xff803000 0x3480>;
+
+			status = "disabled";
+		};
+	};
+};

arch/arm/dts/bcm96753ref.dts

@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 Philippe Reynes <philippe.reynes@softathome.com>
+ */
+
+/dts-v1/;
+
+#include "bcm6753.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "Broadcom bcm6753ref";
+	compatible = "broadcom,bcm6753ref", "brcm,bcm6753";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0x0 0x40000000>;
+	};
+};
+
+&uart0 {
+	u-boot,dm-pre-reloc;
+	status = "okay";
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	status = "okay";
+};
+
+&gpio3 {
+	status = "okay";
+};
+
+&gpio4 {
+	status = "okay";
+};
+
+&gpio5 {
+	status = "okay";
+};
+
+&gpio6 {
+	status = "okay";
+};
+
+&gpio7 {
+	status = "okay";
+};
+
+&nand {
+	status = "okay";
+	write-protect = <0>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	nandcs@0 {
+		compatible = "brcm,nandcs";
+		reg = <0>;
+		nand-ecc-strength = <4>;
+		nand-ecc-step-size = <512>;
+		brcm,nand-oob-sector-size = <16>;
+	};
+};
+
+&leds {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	brcm,serial-led-en-pol;
+	brcm,serial-led-data-ppol;
+
+	led@0 {
+		reg = <0>;
+		label = "led_red";
+	};
+
+	led@1 {
+		reg = <1>;
+		label = "led_green";
+	};
+};

board/broadcom/bcm96753ref/Kconfig

@@ -0,0 +1,16 @@
+if TARGET_BCM96753REF
+
+config SYS_VENDOR
+	default "broadcom"
+
+config SYS_BOARD
+	default "bcm96753ref"
+
+config SYS_CONFIG_NAME
+	default "broadcom_bcm96753ref"
+
+endif
+
+config TARGET_BCM96753REF
+	bool "Support Broadcom bcm96753ref"
+	depends on ARCH_BCM6753

board/broadcom/bcm96753ref/MAINTAINERS

@@ -0,0 +1,6 @@
+BROADCOM BCM96753REF
+M:	Philippe Reynes <philippe.reynes@softathome.com>
+S:	Maintained
+F:	board/broadcom/bcm96753ref
+F:	include/configs/broadcom_bcm96753ref.h
+F:	configs/bcm96753ref_ram_defconfig

board/broadcom/bcm96753ref/Makefile

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+obj-y	+= bcm96753ref.o

board/broadcom/bcm96753ref/bcm96753ref.c

@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 Philippe Reynes <philippe.reynes@softathome.com>
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <linux/io.h>
+#include <cpu_func.h>
+
+int board_init(void)
+{
+	return 0;
+}
+
+int dram_init(void)
+{
+	if (fdtdec_setup_mem_size_base() != 0)
+		printf("fdtdec_setup_mem_size_base() has failed\n");
+
+	return 0;
+}
+
+int dram_init_banksize(void)
+{
+	fdtdec_setup_memory_banksize();
+
+	return 0;
+}
+
+int print_cpuinfo(void)
+{
+	return 0;
+}
+
+void enable_caches(void)
+{
+	icache_enable();
+	dcache_enable();
+}

configs/bcm96753ref_ram_defconfig

@@ -0,0 +1,82 @@
+CONFIG_ARM=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_SKIP_LOWLEVEL_INIT_ONLY=y
+CONFIG_SYS_ARCH_TIMER=y
+CONFIG_ARCH_BCM6753=y
+CONFIG_SYS_TEXT_BASE=0x1000000
+CONFIG_SYS_MALLOC_F_LEN=0x1000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_ENV_SIZE=0x20000
+CONFIG_DM_GPIO=y
+CONFIG_DEFAULT_DEVICE_TREE="bcm96753ref"
+CONFIG_ARMV7_LPAE=y
+CONFIG_TARGET_BCM96753REF=y
+CONFIG_ENV_VARS_UBOOT_CONFIG=y
+CONFIG_SYS_LOAD_ADDR=0x1000000
+CONFIG_FIT=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_FIT_CIPHER=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_LEGACY_IMAGE_FORMAT=y
+CONFIG_SUPPORT_RAW_INITRD=y
+CONFIG_OF_STDOUT_VIA_ALIAS=y
+# CONFIG_AUTOBOOT is not set
+CONFIG_SYS_CONSOLE_IS_IN_ENV=y
+CONFIG_HUSH_PARSER=y
+# CONFIG_CMD_BOOTD is not set
+# CONFIG_BOOTM_NETBSD is not set
+# CONFIG_BOOTM_PLAN9 is not set
+# CONFIG_BOOTM_RTEMS is not set
+# CONFIG_BOOTM_VXWORKS is not set
+# CONFIG_CMD_ELF is not set
+# CONFIG_CMD_XIMG is not set
+# CONFIG_CMD_EXPORTENV is not set
+# CONFIG_CMD_IMPORTENV is not set
+# CONFIG_CMD_EDITENV is not set
+# CONFIG_CMD_SAVEENV is not set
+# CONFIG_CMD_ENV_EXISTS is not set
+# CONFIG_CMD_CRC32 is not set
+CONFIG_CMD_MEMINFO=y
+CONFIG_CMD_CLK=y
+CONFIG_CMD_GPIO=y
+# CONFIG_CMD_LOADS is not set
+CONFIG_CMD_MTD=y
+CONFIG_CMD_NAND=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_WDT=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_MTDPARTS=y
+CONFIG_CMD_UBI=y
+# CONFIG_CMD_UBIFS is not set
+# CONFIG_NET is not set
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_BUTTON=y
+CONFIG_BUTTON_GPIO=y
+CONFIG_CLK=y
+CONFIG_BCM6345_GPIO=y
+# CONFIG_INPUT is not set
+CONFIG_LED=y
+CONFIG_LED_BCM6753=y
+CONFIG_LED_BLINK=y
+CONFIG_LED_GPIO=y
+CONFIG_MISC=y
+# CONFIG_MMC is not set
+CONFIG_MTD=y
+CONFIG_DM_MTD=y
+CONFIG_MTD_RAW_NAND=y
+CONFIG_NAND_BRCMNAND=y
+CONFIG_NAND_BRCMNAND_6753=y
+CONFIG_PINCTRL=y
+CONFIG_PINCONF=y
+CONFIG_SPECIFY_CONSOLE_INDEX=y
+CONFIG_DM_SERIAL=y
+CONFIG_PL01X_SERIAL=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_SPI_MEM=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_WATCHDOG=y
+CONFIG_WDT_BCM6345=y
+CONFIG_REGEX=y

configs/evb-ast2500_defconfig

@@ -7,6 +7,7 @@ CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_TARGET_EVB_AST2500=y
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_ENV_SIZE=0x20000
+CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="ast2500-evb"
 CONFIG_PRE_CON_BUF_ADDR=0x1e720000
 CONFIG_SYS_LOAD_ADDR=0x83000000
@@ -18,6 +19,7 @@ CONFIG_PRE_CONSOLE_BUFFER=y
 # CONFIG_DISPLAY_CPUINFO is not set
 CONFIG_HUSH_PARSER=y
 # CONFIG_AUTO_COMPLETE is not set
+CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_DHCP=y
@@ -29,6 +31,7 @@ CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_REGMAP=y
 CONFIG_CLK=y
+CONFIG_ASPEED_GPIO=y
 CONFIG_DM_I2C=y
 CONFIG_SYS_I2C_ASPEED=y
 CONFIG_MMC_SDHCI=y

configs/evb-ast2600_defconfig

@@ -11,6 +11,7 @@ CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_ENV_SIZE=0x10000
+CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="ast2600-evb"
 CONFIG_SPL_SERIAL=y
 CONFIG_SPL_STACK_R_ADDR=0x83000000
@@ -39,6 +40,7 @@ CONFIG_SPL_DM_RESET=y
 CONFIG_SPL_RAM_SUPPORT=y
 CONFIG_SPL_RAM_DEVICE=y
 CONFIG_HUSH_PARSER=y
+CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_DHCP=y
@@ -58,6 +60,7 @@ CONFIG_SPL_CLK=y
 CONFIG_DM_HASH=y
 CONFIG_HASH_ASPEED=y
 CONFIG_ASPEED_ACRY=y
+CONFIG_ASPEED_GPIO=y
 CONFIG_DM_I2C=y
 CONFIG_MISC=y
 CONFIG_SPL_MISC=y

drivers/gpio/Kconfig

@@ -87,7 +87,8 @@ config ALTERA_PIO
 config BCM6345_GPIO
 	bool "BCM6345 GPIO driver"
 	depends on DM_GPIO && (ARCH_BMIPS || ARCH_BCM68360 || \
-			       ARCH_BCM6858 || ARCH_BCM63158)
+			       ARCH_BCM6858 || ARCH_BCM63158 || \
+			       ARCH_BCM6753)
 	help
 	  This driver supports the GPIO banks on BCM6345 SoCs.
 
@@ -126,6 +127,13 @@ config ATMEL_PIO4
 	  may be dedicated as a general purpose I/O or be assigned to
 	  a function of an embedded peripheral.
 
+config ASPEED_GPIO
+	bool "Aspeed GPIO Driver"
+	help
+	  Say yes here to support the Aspeed GPIO driver. The controller
+	  is found in the AST2400, AST2500 and AST2600 BMC SoCs and
+	  provides access to over 200 GPIOs on each chip.
+
 config DA8XX_GPIO
 	bool "DA8xx GPIO Driver"
 	help

drivers/gpio/Makefile

@@ -12,6 +12,7 @@ obj-$(CONFIG_$(SPL_TPL_)DM_GPIO) += gpio-uclass.o
 
 obj-$(CONFIG_$(SPL_)DM_PCA953X)	+= pca953x_gpio.o
 
+obj-$(CONFIG_ASPEED_GPIO)	+= gpio-aspeed.o
 obj-$(CONFIG_AT91_GPIO)	+= at91_gpio.o
 obj-$(CONFIG_ATMEL_PIO4)	+= atmel_pio4.o
 obj-$(CONFIG_BCM6345_GPIO)	+= bcm6345_gpio.o

drivers/gpio/gpio-aspeed.c

@@ -0,0 +1,299 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2015 IBM Corp.
+ * Joel Stanley <joel@jms.id.au>
+ * Ryan Chen <ryan_chen@aspeedtech.com>
+ *
+ * Implementation extracted from the Linux kernel and adapted for u-boot.
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+
+#include <config.h>
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <asm/io.h>
+#include <linux/bug.h>
+#include <linux/sizes.h>
+
+struct aspeed_gpio_priv {
+	void *regs;
+};
+
+struct aspeed_gpio_bank {
+	u16		val_regs;	/* +0: Rd: read input value, Wr: set write latch
+					 * +4: Rd/Wr: Direction (0=in, 1=out)
+					 */
+	u16		rdata_reg;	/*     Rd: read write latch, Wr: <none>  */
+	u16		irq_regs;
+	u16		debounce_regs;
+	u16		tolerance_regs;
+	u16		cmdsrc_regs;
+	const char	names[4][3];
+};
+
+static const struct aspeed_gpio_bank aspeed_gpio_banks[] = {
+	{
+		.val_regs = 0x0000,
+		.rdata_reg = 0x00c0,
+		.irq_regs = 0x0008,
+		.debounce_regs = 0x0040,
+		.tolerance_regs = 0x001c,
+		.cmdsrc_regs = 0x0060,
+		.names = { "A", "B", "C", "D" },
+	},
+	{
+		.val_regs = 0x0020,
+		.rdata_reg = 0x00c4,
+		.irq_regs = 0x0028,
+		.debounce_regs = 0x0048,
+		.tolerance_regs = 0x003c,
+		.cmdsrc_regs = 0x0068,
+		.names = { "E", "F", "G", "H" },
+	},
+	{
+		.val_regs = 0x0070,
+		.rdata_reg = 0x00c8,
+		.irq_regs = 0x0098,
+		.debounce_regs = 0x00b0,
+		.tolerance_regs = 0x00ac,
+		.cmdsrc_regs = 0x0090,
+		.names = { "I", "J", "K", "L" },
+	},
+	{
+		.val_regs = 0x0078,
+		.rdata_reg = 0x00cc,
+		.irq_regs = 0x00e8,
+		.debounce_regs = 0x0100,
+		.tolerance_regs = 0x00fc,
+		.cmdsrc_regs = 0x00e0,
+		.names = { "M", "N", "O", "P" },
+	},
+	{
+		.val_regs = 0x0080,
+		.rdata_reg = 0x00d0,
+		.irq_regs = 0x0118,
+		.debounce_regs = 0x0130,
+		.tolerance_regs = 0x012c,
+		.cmdsrc_regs = 0x0110,
+		.names = { "Q", "R", "S", "T" },
+	},
+	{
+		.val_regs = 0x0088,
+		.rdata_reg = 0x00d4,
+		.irq_regs = 0x0148,
+		.debounce_regs = 0x0160,
+		.tolerance_regs = 0x015c,
+		.cmdsrc_regs = 0x0140,
+		.names = { "U", "V", "W", "X" },
+	},
+	{
+		.val_regs = 0x01E0,
+		.rdata_reg = 0x00d8,
+		.irq_regs = 0x0178,
+		.debounce_regs = 0x0190,
+		.tolerance_regs = 0x018c,
+		.cmdsrc_regs = 0x0170,
+		.names = { "Y", "Z", "AA", "AB" },
+	},
+	{
+		.val_regs = 0x01e8,
+		.rdata_reg = 0x00dc,
+		.irq_regs = 0x01a8,
+		.debounce_regs = 0x01c0,
+		.tolerance_regs = 0x01bc,
+		.cmdsrc_regs = 0x01a0,
+		.names = { "AC", "", "", "" },
+	},
+};
+
+enum aspeed_gpio_reg {
+	reg_val,
+	reg_rdata,
+	reg_dir,
+	reg_irq_enable,
+	reg_irq_type0,
+	reg_irq_type1,
+	reg_irq_type2,
+	reg_irq_status,
+	reg_debounce_sel1,
+	reg_debounce_sel2,
+	reg_tolerance,
+	reg_cmdsrc0,
+	reg_cmdsrc1,
+};
+
+#define GPIO_VAL_VALUE	0x00
+#define GPIO_VAL_DIR	0x04
+
+#define GPIO_IRQ_ENABLE	0x00
+#define GPIO_IRQ_TYPE0	0x04
+#define GPIO_IRQ_TYPE1	0x08
+#define GPIO_IRQ_TYPE2	0x0c
+#define GPIO_IRQ_STATUS	0x10
+
+#define GPIO_DEBOUNCE_SEL1 0x00
+#define GPIO_DEBOUNCE_SEL2 0x04
+
+#define GPIO_CMDSRC_0	0x00
+#define GPIO_CMDSRC_1	0x04
+#define  GPIO_CMDSRC_ARM		0
+#define  GPIO_CMDSRC_LPC		1
+#define  GPIO_CMDSRC_COLDFIRE		2
+#define  GPIO_CMDSRC_RESERVED		3
+
+/* This will be resolved at compile time */
+static inline void __iomem *bank_reg(struct aspeed_gpio_priv *gpio,
+				     const struct aspeed_gpio_bank *bank,
+				     const enum aspeed_gpio_reg reg)
+{
+	switch (reg) {
+	case reg_val:
+		return gpio->regs + bank->val_regs + GPIO_VAL_VALUE;
+	case reg_rdata:
+		return gpio->regs + bank->rdata_reg;
+	case reg_dir:
+		return gpio->regs + bank->val_regs + GPIO_VAL_DIR;
+	case reg_irq_enable:
+		return gpio->regs + bank->irq_regs + GPIO_IRQ_ENABLE;
+	case reg_irq_type0:
+		return gpio->regs + bank->irq_regs + GPIO_IRQ_TYPE0;
+	case reg_irq_type1:
+		return gpio->regs + bank->irq_regs + GPIO_IRQ_TYPE1;
+	case reg_irq_type2:
+		return gpio->regs + bank->irq_regs + GPIO_IRQ_TYPE2;
+	case reg_irq_status:
+		return gpio->regs + bank->irq_regs + GPIO_IRQ_STATUS;
+	case reg_debounce_sel1:
+		return gpio->regs + bank->debounce_regs + GPIO_DEBOUNCE_SEL1;
+	case reg_debounce_sel2:
+		return gpio->regs + bank->debounce_regs + GPIO_DEBOUNCE_SEL2;
+	case reg_tolerance:
+		return gpio->regs + bank->tolerance_regs;
+	case reg_cmdsrc0:
+		return gpio->regs + bank->cmdsrc_regs + GPIO_CMDSRC_0;
+	case reg_cmdsrc1:
+		return gpio->regs + bank->cmdsrc_regs + GPIO_CMDSRC_1;
+	}
+	BUG();
+}
+
+#define GPIO_BANK(x)	((x) >> 5)
+#define GPIO_OFFSET(x)	((x) & 0x1f)
+#define GPIO_BIT(x)	BIT(GPIO_OFFSET(x))
+
+static const struct aspeed_gpio_bank *to_bank(unsigned int offset)
+{
+	unsigned int bank = GPIO_BANK(offset);
+
+	WARN_ON(bank >= ARRAY_SIZE(aspeed_gpio_banks));
+	return &aspeed_gpio_banks[bank];
+}
+
+static int
+aspeed_gpio_direction_input(struct udevice *dev, unsigned int offset)
+{
+	struct aspeed_gpio_priv *priv = dev_get_priv(dev);
+	const struct aspeed_gpio_bank *bank = to_bank(offset);
+	u32 dir = readl(bank_reg(priv, bank, reg_dir));
+
+	dir &= ~GPIO_BIT(offset);
+	writel(dir, bank_reg(priv, bank, reg_dir));
+
+	return 0;
+}
+
+static int aspeed_gpio_direction_output(struct udevice *dev, unsigned int offset,
+					int value)
+{
+	struct aspeed_gpio_priv *priv = dev_get_priv(dev);
+	const struct aspeed_gpio_bank *bank = to_bank(offset);
+	u32 dir = readl(bank_reg(priv, bank, reg_dir));
+	u32 output = readl(bank_reg(priv, bank, reg_val));
+
+	dir |= GPIO_BIT(offset);
+	writel(dir, bank_reg(priv, bank, reg_dir));
+
+	if (value)
+		output |= GPIO_BIT(offset);
+	else
+		output &= ~GPIO_BIT(offset);
+
+	writel(output, bank_reg(priv, bank, reg_val));
+
+	return 0;
+}
+
+static int aspeed_gpio_get_value(struct udevice *dev, unsigned int offset)
+{
+	struct aspeed_gpio_priv *priv = dev_get_priv(dev);
+	const struct aspeed_gpio_bank *bank = to_bank(offset);
+
+	return !!(readl(bank_reg(priv, bank, reg_val)) & GPIO_BIT(offset));
+}
+
+static int
+aspeed_gpio_set_value(struct udevice *dev, unsigned int offset, int value)
+{
+	struct aspeed_gpio_priv *priv = dev_get_priv(dev);
+	const struct aspeed_gpio_bank *bank = to_bank(offset);
+	u32 data = readl(bank_reg(priv, bank, reg_val));
+
+	if (value)
+		data |= GPIO_BIT(offset);
+	else
+		data &= ~GPIO_BIT(offset);
+
+	writel(data, bank_reg(priv, bank, reg_val));
+
+	return 0;
+}
+
+static int aspeed_gpio_get_function(struct udevice *dev, unsigned int offset)
+{
+	struct aspeed_gpio_priv *priv = dev_get_priv(dev);
+	const struct aspeed_gpio_bank *bank = to_bank(offset);
+
+	if (readl(bank_reg(priv, bank, reg_dir)) & GPIO_BIT(offset))
+		return GPIOF_OUTPUT;
+
+	return GPIOF_INPUT;
+}
+
+static const struct dm_gpio_ops aspeed_gpio_ops = {
+	.direction_input	= aspeed_gpio_direction_input,
+	.direction_output	= aspeed_gpio_direction_output,
+	.get_value		= aspeed_gpio_get_value,
+	.set_value		= aspeed_gpio_set_value,
+	.get_function		= aspeed_gpio_get_function,
+};
+
+static int aspeed_gpio_probe(struct udevice *dev)
+{
+	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
+	struct aspeed_gpio_priv *priv = dev_get_priv(dev);
+
+	uc_priv->bank_name = dev->name;
+	ofnode_read_u32(dev_ofnode(dev), "ngpios", &uc_priv->gpio_count);
+	priv->regs = devfdt_get_addr_ptr(dev);
+
+	return 0;
+}
+
+static const struct udevice_id aspeed_gpio_ids[] = {
+	{ .compatible = "aspeed,ast2400-gpio",  },
+	{ .compatible = "aspeed,ast2500-gpio",	},
+	{ .compatible = "aspeed,ast2600-gpio",	},
+	{ }
+};
+
+U_BOOT_DRIVER(gpio_aspeed) = {
+	.name   = "gpio-aspeed",
+	.id     = UCLASS_GPIO,
+	.of_match = aspeed_gpio_ids,
+	.ops    = &aspeed_gpio_ops,
+	.probe  = aspeed_gpio_probe,
+	.priv_auto = sizeof(struct aspeed_gpio_priv),
+};

drivers/led/Kconfig

@@ -28,6 +28,13 @@ config LED_BCM6358
 	  LED HW controller accessed via MMIO registers.
 	  HW has no blinking capabilities and up to 32 LEDs can be controlled.
 
+config LED_BCM6753
+	bool "LED Support for BCM6753"
+	depends on LED && ARCH_BCM6753
+	help
+	  This option enables support for LEDs connected to the BCM6753
+	  HW has blinking and fading capabilities and up to 32 LEDs can be controlled.
+
 config LED_BCM6858
 	bool "LED Support for BCM6858"
 	depends on LED && (ARCH_BCM68360 || ARCH_BCM6858 || ARCH_BCM63158)

drivers/led/Makefile

@@ -6,6 +6,7 @@
 obj-y += led-uclass.o
 obj-$(CONFIG_LED_BCM6328) += led_bcm6328.o
 obj-$(CONFIG_LED_BCM6358) += led_bcm6358.o
+obj-$(CONFIG_LED_BCM6753) += led_bcm6753.o
 obj-$(CONFIG_LED_BCM6858) += led_bcm6858.o
 obj-$(CONFIG_$(SPL_)LED_GPIO) += led_gpio.o
 obj-$(CONFIG_LED_CORTINA) += led_cortina.o

drivers/led/led_bcm6753.c

@@ -0,0 +1,270 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 Philippe Reynes <philippe.reynes@softathome.com>
+ *
+ * based on:
+ * drivers/led/led_bcm6858.c
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <led.h>
+#include <log.h>
+#include <asm/io.h>
+#include <dm/lists.h>
+#include <linux/bitops.h>
+
+#define LEDS_MAX		32
+#define LEDS_WAIT		100
+
+/* LED Mode register */
+#define LED_MODE_REG		0x0
+#define LED_MODE_OFF		0
+#define LED_MODE_ON		1
+#define LED_MODE_MASK		1
+
+/* LED Controller Global settings register */
+#define CLED_CTRL_REG			0x00
+#define CLED_CTRL_SERIAL_LED_DATA_PPOL	BIT(1)
+#define CLED_CTRL_SERIAL_LED_CLK_POL	BIT(2)
+#define CLED_CTRL_SERIAL_LED_EN_POL	BIT(3)
+#define CLED_CTRL_SERIAL_LED_MSB_FIRST	BIT(4)
+#define CLED_CTRL_MASK			0x1E
+/* LED Controller IP LED source select register */
+#define CLED_HW_LED_EN_REG		0x04
+/* Hardware LED Polarity register */
+#define CLED_HW_LED_IP_PPOL_REG		0x0c
+/* Soft LED Set Register */
+#define CLED_SW_LED_IP_SET_REG		0x10
+/* Parallel LED Output Polarity Register */
+#define CLED_PLED_OP_PPOL_REG		0x18
+/* LED Channel activate register */
+#define CLED_LED_CH_ACTIVATE_REG	0x1c
+/* LED 0 Config 0 reg */
+#define CLED_LED_0_CONFIG_0		0x20
+/* Soft LED Clear Register */
+#define CLED_SW_LED_IP_CLEAR_REG	0x444
+/* Soft LED Status Register */
+#define CLED_SW_LED_IP_STATUS_REG	0x448
+
+/* Size of all registers used for the config of one LED */
+#define CLED_CONFIG_SIZE		(4 * sizeof(u32))
+
+#define CLED_CONFIG0_MODE		0
+#define CLED_CONFIG0_MODE_MASK		(BIT(0) | BIT(1))
+#define CLED_CONFIG0_MODE_STEADY	0
+#define CLED_CONFIG0_MODE_FADING	1
+#define CLED_CONFIG0_MODE_PULSATING	2
+
+#define CLED_CONFIG0_FLASH_CTRL_SHIFT	3
+#define CLED_CONFIG0_FLASH_CTRL_MASK	(BIT(3) | BIT(4) | BIT(5))
+
+struct bcm6753_led_priv {
+	void __iomem *regs;
+	u8 pin;
+};
+
+/*
+ * The value for flash rate are:
+ * 0 : no blinking
+ * 1 : rate is 25 Hz => 40 ms (period)
+ * 2 : rate is 12.5 Hz => 80 ms (period)
+ * 3 : rate is 6.25 Hz => 160 ms (period)
+ * 4 : rate is 3.125 Hz => 320 ms (period)
+ * 5 : rate is 1.5625 Hz => 640 ms (period)
+ * 6 : rate is 0.7815 Hz => 1280 ms (period)
+ * 7 : rate is 0.390625 Hz => 2560 ms (period)
+ */
+static const int bcm6753_flash_rate[8] = {
+	0, 40, 80, 160, 320, 640, 1280, 2560
+};
+
+static u32 bcm6753_flash_rate_value(int period_ms)
+{
+	unsigned long value = 7;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(bcm6753_flash_rate); i++) {
+		if (period_ms <= bcm6753_flash_rate[i]) {
+			value = i;
+			break;
+		}
+	}
+
+	return value;
+}
+
+static int bcm6753_led_set_period(struct udevice *dev, int period_ms)
+{
+	struct bcm6753_led_priv *priv = dev_get_priv(dev);
+	u32 offset, shift, value;
+
+	offset = CLED_LED_0_CONFIG_0 + (CLED_CONFIG_SIZE * priv->pin);
+	value  = bcm6753_flash_rate_value(period_ms);
+	shift  = CLED_CONFIG0_FLASH_CTRL_SHIFT;
+
+	/* set mode steady */
+	clrbits_32(priv->regs + offset, CLED_CONFIG0_MODE_MASK);
+	setbits_32(priv->regs + offset, CLED_CONFIG0_MODE_STEADY);
+
+	/* set flash rate */
+	clrbits_32(priv->regs + offset, CLED_CONFIG0_FLASH_CTRL_MASK);
+	setbits_32(priv->regs + offset, value << shift);
+
+	/* enable config */
+	setbits_32(priv->regs + CLED_LED_CH_ACTIVATE_REG, 1 << priv->pin);
+
+	return 0;
+}
+
+static enum led_state_t bcm6753_led_get_state(struct udevice *dev)
+{
+	struct bcm6753_led_priv *priv = dev_get_priv(dev);
+	enum led_state_t state = LEDST_OFF;
+	u32 sw_led_ip_status;
+
+	sw_led_ip_status = readl(priv->regs + CLED_SW_LED_IP_STATUS_REG);
+	if (sw_led_ip_status & (1 << priv->pin))
+		state = LEDST_ON;
+
+	return state;
+}
+
+static int bcm6753_led_set_state(struct udevice *dev, enum led_state_t state)
+{
+	struct bcm6753_led_priv *priv = dev_get_priv(dev);
+
+	switch (state) {
+	case LEDST_OFF:
+		setbits_32(priv->regs + CLED_SW_LED_IP_CLEAR_REG, (1 << priv->pin));
+		if (IS_ENABLED(CONFIG_LED_BLINK))
+			bcm6753_led_set_period(dev, 0);
+		break;
+	case LEDST_ON:
+		setbits_32(priv->regs + CLED_SW_LED_IP_SET_REG, (1 << priv->pin));
+		if (IS_ENABLED(CONFIG_LED_BLINK))
+			bcm6753_led_set_period(dev, 0);
+		break;
+	case LEDST_TOGGLE:
+		if (bcm6753_led_get_state(dev) == LEDST_OFF)
+			return bcm6753_led_set_state(dev, LEDST_ON);
+		else
+			return bcm6753_led_set_state(dev, LEDST_OFF);
+		break;
+#ifdef CONFIG_LED_BLINK
+	case LEDST_BLINK:
+		setbits_32(priv->regs + CLED_SW_LED_IP_SET_REG, (1 << priv->pin));
+		break;
+#endif
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct led_ops bcm6753_led_ops = {
+	.get_state = bcm6753_led_get_state,
+	.set_state = bcm6753_led_set_state,
+#ifdef CONFIG_LED_BLINK
+	.set_period = bcm6753_led_set_period,
+#endif
+};
+
+static int bcm6753_led_probe(struct udevice *dev)
+{
+	struct led_uc_plat *uc_plat = dev_get_uclass_plat(dev);
+
+	/* Top-level LED node */
+	if (!uc_plat->label) {
+		void __iomem *regs;
+		u32 set_bits = 0;
+
+		regs = dev_remap_addr(dev);
+		if (!regs)
+			return -EINVAL;
+
+		if (dev_read_bool(dev, "brcm,serial-led-msb-first"))
+			set_bits |= CLED_CTRL_SERIAL_LED_MSB_FIRST;
+		if (dev_read_bool(dev, "brcm,serial-led-en-pol"))
+			set_bits |= CLED_CTRL_SERIAL_LED_EN_POL;
+		if (dev_read_bool(dev, "brcm,serial-led-clk-pol"))
+			set_bits |= CLED_CTRL_SERIAL_LED_CLK_POL;
+		if (dev_read_bool(dev, "brcm,serial-led-data-ppol"))
+			set_bits |= CLED_CTRL_SERIAL_LED_DATA_PPOL;
+
+		clrsetbits_32(regs + CLED_CTRL_REG, CLED_CTRL_MASK, set_bits);
+	} else {
+		struct bcm6753_led_priv *priv = dev_get_priv(dev);
+		void __iomem *regs;
+		unsigned int pin;
+
+		regs = dev_remap_addr(dev_get_parent(dev));
+		if (!regs)
+			return -EINVAL;
+
+		pin = dev_read_u32_default(dev, "reg", LEDS_MAX);
+		if (pin >= LEDS_MAX)
+			return -EINVAL;
+
+		priv->regs = regs;
+		priv->pin = pin;
+
+		/* this led is managed by software */
+		clrbits_32(regs + CLED_HW_LED_EN_REG, 1 << pin);
+
+		/* configure the polarity */
+		if (dev_read_bool(dev, "active-low"))
+			clrbits_32(regs + CLED_PLED_OP_PPOL_REG, 1 << pin);
+		else
+			setbits_32(regs + CLED_PLED_OP_PPOL_REG, 1 << pin);
+	}
+
+	return 0;
+}
+
+static int bcm6753_led_bind(struct udevice *parent)
+{
+	ofnode node;
+
+	dev_for_each_subnode(node, parent) {
+		struct led_uc_plat *uc_plat;
+		struct udevice *dev;
+		const char *label;
+		int ret;
+
+		label = ofnode_read_string(node, "label");
+		if (!label) {
+			debug("%s: node %s has no label\n", __func__,
+			      ofnode_get_name(node));
+			return -EINVAL;
+		}
+
+		ret = device_bind_driver_to_node(parent, "bcm6753-led",
+						 ofnode_get_name(node),
+						 node, &dev);
+		if (ret)
+			return ret;
+
+		uc_plat = dev_get_uclass_plat(dev);
+		uc_plat->label = label;
+	}
+
+	return 0;
+}
+
+static const struct udevice_id bcm6753_led_ids[] = {
+	{ .compatible = "brcm,bcm6753-leds" },
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(bcm6753_led) = {
+	.name = "bcm6753-led",
+	.id = UCLASS_LED,
+	.of_match = bcm6753_led_ids,
+	.bind = bcm6753_led_bind,
+	.probe = bcm6753_led_probe,
+	.priv_auto = sizeof(struct bcm6753_led_priv),
+	.ops = &bcm6753_led_ops,
+};

drivers/mmc/omap_hsmmc.c

@@ -2019,6 +2019,7 @@ static const struct udevice_id omap_hsmmc_ids[] = {
 	{ .compatible = "ti,omap3-hsmmc" },
 	{ .compatible = "ti,omap4-hsmmc" },
 	{ .compatible = "ti,am33xx-hsmmc" },
+	{ .compatible = "ti,am335-sdhci" },
 	{ .compatible = "ti,dra7-hsmmc", .data = (ulong)&dra7_mmc_of_data },
 	{ }
 };

drivers/mtd/nand/raw/Kconfig

@@ -91,6 +91,12 @@ config NAND_BRCMNAND_6368
 	help
 	  Enable support for broadcom nand driver on bcm6368.
 
+config NAND_BRCMNAND_6753
+	bool "Support Broadcom NAND controller on bcm6753"
+	depends on NAND_BRCMNAND && ARCH_BCM6753
+	help
+	  Enable support for broadcom nand driver on bcm6753.
+
 config NAND_BRCMNAND_68360
        bool "Support Broadcom NAND controller on bcm68360"
        depends on NAND_BRCMNAND && ARCH_BCM68360

drivers/mtd/nand/raw/brcmnand/Makefile

@@ -2,6 +2,7 @@
 
 obj-$(CONFIG_NAND_BRCMNAND_6368) += bcm6368_nand.o
 obj-$(CONFIG_NAND_BRCMNAND_63158) += bcm63158_nand.o
+obj-$(CONFIG_NAND_BRCMNAND_6753) += bcm6753_nand.o
 obj-$(CONFIG_NAND_BRCMNAND_68360) += bcm68360_nand.o
 obj-$(CONFIG_NAND_BRCMNAND_6838) += bcm6838_nand.o
 obj-$(CONFIG_NAND_BRCMNAND_6858) += bcm6858_nand.o

drivers/mtd/nand/raw/brcmnand/bcm6753_nand.c

@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <common.h>
+#include <asm/io.h>
+#include <memalign.h>
+#include <nand.h>
+#include <linux/bitops.h>
+#include <linux/errno.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <dm.h>
+
+#include "brcmnand.h"
+
+struct bcm6753_nand_soc {
+	struct brcmnand_soc soc;
+	void __iomem *base;
+};
+
+#define BCM6753_NAND_INT		0x00
+#define BCM6753_NAND_STATUS_SHIFT	0
+#define BCM6753_NAND_STATUS_MASK	(0xfff << BCM6753_NAND_STATUS_SHIFT)
+
+#define BCM6753_NAND_INT_EN		0x04
+#define BCM6753_NAND_ENABLE_SHIFT	0
+#define BCM6753_NAND_ENABLE_MASK	(0xffff << BCM6753_NAND_ENABLE_SHIFT)
+
+enum {
+	BCM6753_NP_READ		= BIT(0),
+	BCM6753_BLOCK_ERASE	= BIT(1),
+	BCM6753_COPY_BACK	= BIT(2),
+	BCM6753_PAGE_PGM	= BIT(3),
+	BCM6753_CTRL_READY	= BIT(4),
+	BCM6753_DEV_RBPIN	= BIT(5),
+	BCM6753_ECC_ERR_UNC	= BIT(6),
+	BCM6753_ECC_ERR_CORR	= BIT(7),
+};
+
+static bool bcm6753_nand_intc_ack(struct brcmnand_soc *soc)
+{
+	struct bcm6753_nand_soc *priv =
+			container_of(soc, struct bcm6753_nand_soc, soc);
+	void __iomem *mmio = priv->base + BCM6753_NAND_INT;
+	u32 val = brcmnand_readl(mmio);
+
+	if (val & (BCM6753_CTRL_READY << BCM6753_NAND_STATUS_SHIFT)) {
+		/* Ack interrupt */
+		val &= ~BCM6753_NAND_STATUS_MASK;
+		val |= BCM6753_CTRL_READY << BCM6753_NAND_STATUS_SHIFT;
+		brcmnand_writel(val, mmio);
+		return true;
+	}
+
+	return false;
+}
+
+static void bcm6753_nand_intc_set(struct brcmnand_soc *soc, bool en)
+{
+	struct bcm6753_nand_soc *priv =
+			container_of(soc, struct bcm6753_nand_soc, soc);
+	void __iomem *mmio = priv->base + BCM6753_NAND_INT_EN;
+	u32 val = brcmnand_readl(mmio);
+
+	/* Don't ack any interrupts */
+	val &= ~BCM6753_NAND_STATUS_MASK;
+
+	if (en)
+		val |= BCM6753_CTRL_READY << BCM6753_NAND_ENABLE_SHIFT;
+	else
+		val &= ~(BCM6753_CTRL_READY << BCM6753_NAND_ENABLE_SHIFT);
+
+	brcmnand_writel(val, mmio);
+}
+
+static int bcm6753_nand_probe(struct udevice *dev)
+{
+	struct udevice *pdev = dev;
+	struct bcm6753_nand_soc *priv = dev_get_priv(dev);
+	struct brcmnand_soc *soc;
+	struct resource res;
+
+	soc = &priv->soc;
+
+	dev_read_resource_byname(pdev, "nand-int-base", &res);
+	priv->base = devm_ioremap(dev, res.start, resource_size(&res));
+	if (IS_ERR(priv->base))
+		return PTR_ERR(priv->base);
+
+	soc->ctlrdy_ack = bcm6753_nand_intc_ack;
+	soc->ctlrdy_set_enabled = bcm6753_nand_intc_set;
+
+	/* Disable and ack all interrupts  */
+	brcmnand_writel(0, priv->base + BCM6753_NAND_INT_EN);
+	brcmnand_writel(0, priv->base + BCM6753_NAND_INT);
+
+	return brcmnand_probe(pdev, soc);
+}
+
+static const struct udevice_id bcm6753_nand_dt_ids[] = {
+	{
+		.compatible = "brcm,nand-bcm6753",
+	},
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(bcm6753_nand) = {
+	.name = "bcm6753-nand",
+	.id = UCLASS_MTD,
+	.of_match = bcm6753_nand_dt_ids,
+	.probe = bcm6753_nand_probe,
+	.priv_auto = sizeof(struct bcm6753_nand_soc),
+};
+
+void board_nand_init(void)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = uclass_get_device_by_driver(UCLASS_MTD,
+					  DM_DRIVER_GET(bcm6753_nand), &dev);
+	if (ret && ret != -ENODEV)
+		pr_err("Failed to initialize %s. (error %d)\n", dev->name,
+		       ret);
+}

drivers/watchdog/Kconfig

@@ -129,7 +129,8 @@ config WDT_AT91
 config WDT_BCM6345
 	bool "BCM6345 watchdog timer support"
 	depends on WDT && (ARCH_BMIPS || ARCH_BCM68360 || \
-			   ARCH_BCM6858 || ARCH_BCM63158)
+			   ARCH_BCM6858 || ARCH_BCM63158 || \
+			   ARCH_BCM6753)
 	help
 	  Select this to enable watchdog timer for BCM6345 SoCs.
 	  The watchdog timer is stopped when initialized.

include/configs/broadcom_bcm96753ref.h

@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2022 Philippe Reynes <philippe.reynes@softathome.com>
+ */
+
+#include <linux/sizes.h>
+
+/*
+ * common
+ */
+
+/* UART */
+#define CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200, \
+					  230400, 500000, 1500000 }
+/* Memory usage */
+#define CONFIG_SYS_MAXARGS		24
+
+/*
+ * 6853
+ */
+
+/* RAM */
+#define CONFIG_SYS_SDRAM_BASE		0x00000000
+
+/* U-Boot */
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_TEXT_BASE + SZ_16M)
+
+#ifdef CONFIG_MTD_RAW_NAND
+#define CONFIG_SYS_MAX_NAND_DEVICE	1
+#endif /* CONFIG_MTD_RAW_NAND */
+
+/*
+ * 96753ref
+ */