ARM: rmobile: Add R8A77995 D3 Draak board

Add bits to support yet another board, the R8A77995 D3 Draak.
The DT file is from Linux 4.15-rc1 , commit
b35334447513c14a4dd55a67c269a743d4a4824b .

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

arch/arm/dts/Makefile

@@ -394,7 +394,8 @@ dtb-$(CONFIG_RCAR_GEN3) += \
 	r8a7795-salvator-x.dtb \
 	r8a7796-m3ulcb.dtb \
 	r8a7796-salvator-x.dtb \
-	r8a77970-eagle.dtb
+	r8a77970-eagle.dtb \
+	r8a77995-draak.dtb
 
 dtb-$(CONFIG_SOC_KEYSTONE) += keystone-k2hk-evm.dtb \
 	keystone-k2l-evm.dtb \

arch/arm/dts/r8a77995-draak.dts

@@ -0,0 +1,124 @@
+/*
+ * Device Tree Source for the Draak board
+ *
+ * Copyright (C) 2016 Renesas Electronics Corp.
+ * Copyright (C) 2017 Glider bvba
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+/dts-v1/;
+#include "r8a77995.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "Renesas Draak board based on r8a77995";
+	compatible = "renesas,draak", "renesas,r8a77995";
+
+	aliases {
+		serial0 = &scif2;
+		ethernet0 = &avb;
+	};
+
+	chosen {
+		bootargs = "ignore_loglevel";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@48000000 {
+		device_type = "memory";
+		/* first 128MB is reserved for secure area. */
+		reg = <0x0 0x48000000 0x0 0x18000000>;
+	};
+};
+
+&extal_clk {
+	clock-frequency = <48000000>;
+};
+
+&pfc {
+	avb0_pins: avb {
+		mux {
+			groups = "avb0_link", "avb0_mdc", "avb0_mii";
+			function = "avb0";
+		};
+	};
+
+	pwm0_pins: pwm0 {
+		groups = "pwm0_c";
+		function = "pwm0";
+	};
+
+	pwm1_pins: pwm1 {
+		groups = "pwm1_c";
+		function = "pwm1";
+	};
+
+	scif2_pins: scif2 {
+		groups = "scif2_data";
+		function = "scif2";
+	};
+
+	usb0_pins: usb0 {
+		groups = "usb0";
+		function = "usb0";
+	};
+};
+
+&ehci0 {
+	status = "okay";
+};
+
+&ohci0 {
+	status = "okay";
+};
+
+&avb {
+	pinctrl-0 = <&avb0_pins>;
+	pinctrl-names = "default";
+	renesas,no-ether-link;
+	phy-handle = <&phy0>;
+	status = "okay";
+
+	phy0: ethernet-phy@0 {
+		rxc-skew-ps = <1500>;
+		reg = <0>;
+		interrupt-parent = <&gpio5>;
+		interrupts = <19 IRQ_TYPE_LEVEL_LOW>;
+	};
+};
+
+&scif2 {
+	pinctrl-0 = <&scif2_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&usb2_phy0 {
+	pinctrl-0 = <&usb0_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&pwm0 {
+	pinctrl-0 = <&pwm0_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&pwm1 {
+	pinctrl-0 = <&pwm1_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&rwdt {
+	timeout-sec = <60>;
+	status = "okay";
+};

arch/arm/mach-rmobile/Kconfig.64

@@ -21,6 +21,11 @@ choice
 	prompt "Renesus ARM64 SoCs board select"
 	optional
 
+config TARGET_DRAAK
+	bool "Draak board"
+	help
+          Support for Renesas R-Car Gen3 Draak platform
+
 config TARGET_EAGLE
 	bool "Eagle board"
 	help
@@ -41,6 +46,7 @@ endchoice
 config SYS_SOC
 	default "rmobile"
 
+source "board/renesas/draak/Kconfig"
 source "board/renesas/eagle/Kconfig"
 source "board/renesas/salvator-x/Kconfig"
 source "board/renesas/ulcb/Kconfig"

board/renesas/draak/Kconfig

@@ -0,0 +1,15 @@
+if TARGET_DRAAK
+
+config SYS_SOC
+	default "rmobile"
+
+config SYS_BOARD
+	default "draak"
+
+config SYS_VENDOR
+	default "renesas"
+
+config SYS_CONFIG_NAME
+	default "draak"
+
+endif

board/renesas/draak/MAINTAINERS

@@ -0,0 +1,6 @@
+DRAAK BOARD
+M:	Marek Vasut <marek.vasut+renesas@gmail.com>
+S:	Maintained
+F:	board/renesas/draak/
+F:	include/configs/draak.h
+F:	configs/r8a77995_draak_defconfig

board/renesas/draak/Makefile

@@ -0,0 +1,9 @@
+#
+# board/renesas/draak/Makefile
+#
+# Copyright (C) 2015 Renesas Electronics Corporation
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y	:= draak.o

board/renesas/draak/draak.c

@@ -0,0 +1,133 @@
+/*
+ * board/renesas/draak/draak.c
+ *     This file is Draak board support.
+ *
+ * Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <netdev.h>
+#include <dm.h>
+#include <dm/platform_data/serial_sh.h>
+#include <asm/processor.h>
+#include <asm/mach-types.h>
+#include <asm/io.h>
+#include <linux/errno.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/rmobile.h>
+#include <asm/arch/rcar-mstp.h>
+#include <asm/arch/sh_sdhi.h>
+#include <i2c.h>
+#include <mmc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define CPGWPCR	0xE6150904
+#define CPGWPR  0xE615090C
+
+#define CLK2MHZ(clk)	(clk / 1000 / 1000)
+void s_init(void)
+{
+	struct rcar_rwdt *rwdt = (struct rcar_rwdt *)RWDT_BASE;
+	struct rcar_swdt *swdt = (struct rcar_swdt *)SWDT_BASE;
+
+	/* Watchdog init */
+	writel(0xA5A5A500, &rwdt->rwtcsra);
+	writel(0xA5A5A500, &swdt->swtcsra);
+
+	writel(0xA5A50000, CPGWPCR);
+	writel(0xFFFFFFFF, CPGWPR);
+}
+
+#define GSX_MSTP112		BIT(12)	/* 3DG */
+#define TMU0_MSTP125		BIT(25)	/* secure */
+#define TMU1_MSTP124		BIT(24)	/* non-secure */
+#define SCIF2_MSTP310		BIT(10)	/* SCIF2 */
+#define DVFS_MSTP926		BIT(26)
+#define HSUSB_MSTP704		BIT(4)	/* HSUSB */
+
+int board_early_init_f(void)
+{
+	/* TMU0,1 */		/* which use ? */
+	mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125 | TMU1_MSTP124);
+
+#if defined(CONFIG_SYS_I2C) && defined(CONFIG_SYS_I2C_SH)
+	/* DVFS for reset */
+	mstp_clrbits_le32(MSTPSR9, SMSTPCR9, DVFS_MSTP926);
+#endif
+	return 0;
+}
+
+/* SYSC */
+/* R/- 32 Power status register 2(3DG) */
+#define	SYSC_PWRSR2	0xE6180100
+/* -/W 32 Power resume control register 2 (3DG) */
+#define	SYSC_PWRONCR2	0xE618010C
+
+/* HSUSB block registers */
+#define HSUSB_REG_LPSTS			0xE6590102
+#define HSUSB_REG_LPSTS_SUSPM_NORMAL	BIT(14)
+#define HSUSB_REG_UGCTRL2		0xE6590184
+#define HSUSB_REG_UGCTRL2_USB0SEL	0x30
+#define HSUSB_REG_UGCTRL2_USB0SEL_EHCI	0x10
+
+int board_init(void)
+{
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_TEXT_BASE + 0x50000;
+
+	/* USB1 pull-up */
+	setbits_le32(PFC_PUEN6, PUEN_USB1_OVC | PUEN_USB1_PWEN);
+
+	/* Configure the HSUSB block */
+	mstp_clrbits_le32(MSTPSR7, SMSTPCR7, HSUSB_MSTP704);
+	/* Choice USB0SEL */
+	clrsetbits_le32(HSUSB_REG_UGCTRL2, HSUSB_REG_UGCTRL2_USB0SEL,
+			HSUSB_REG_UGCTRL2_USB0SEL_EHCI);
+	/* low power status */
+	setbits_le16(HSUSB_REG_LPSTS, HSUSB_REG_LPSTS_SUSPM_NORMAL);
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	if (fdtdec_setup_memory_size() != 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+int dram_init_banksize(void)
+{
+	fdtdec_setup_memory_banksize();
+
+	return 0;
+}
+
+#define RST_BASE	0xE6160000
+#define RST_CA57RESCNT	(RST_BASE + 0x40)
+#define RST_CA53RESCNT	(RST_BASE + 0x44)
+#define RST_RSTOUTCR	(RST_BASE + 0x58)
+#define RST_CA57_CODE	0xA5A5000F
+#define RST_CA53_CODE	0x5A5A000F
+
+void reset_cpu(ulong addr)
+{
+	unsigned long midr, cputype;
+
+	asm volatile("mrs %0, midr_el1" : "=r" (midr));
+	cputype = (midr >> 4) & 0xfff;
+
+	if (cputype == 0xd03)
+		writel(RST_CA53_CODE, RST_CA53RESCNT);
+	else if (cputype == 0xd07)
+		writel(RST_CA57_CODE, RST_CA57RESCNT);
+	else
+		hang();
+}

configs/r8a77995_draak_defconfig

@@ -0,0 +1,61 @@
+CONFIG_ARM=y
+CONFIG_ARCH_RMOBILE=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_RCAR_GEN3=y
+CONFIG_R8A77995=y
+CONFIG_TARGET_DRAAK=y
+CONFIG_DEFAULT_DEVICE_TREE="r8a77995-draak"
+CONFIG_SMBIOS_PRODUCT_NAME=""
+# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="console=ttySC0,115200 rw root=/dev/nfs nfsroot=192.168.0.1:/export/rfs ip=192.168.0.20"
+CONFIG_DEFAULT_FDT_FILE="r8a77995-draak.dtb"
+CONFIG_VERSION_VARIABLE=y
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_BOOTZ=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_OF_CONTROL=y
+CONFIG_ENV_IS_IN_MMC=y
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_CLK=y
+CONFIG_CLK_RENESAS=y
+CONFIG_DM_GPIO=y
+CONFIG_RCAR_GPIO=y
+CONFIG_DM_I2C=y
+CONFIG_SYS_I2C_RCAR_IIC=y
+CONFIG_DM_MMC=y
+CONFIG_MMC_UNIPHIER=y
+CONFIG_MTD=y
+CONFIG_MTD_NOR_FLASH=y
+CONFIG_CFI_FLASH=y
+CONFIG_RENESAS_RPC_HF=y
+CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ90X1=y
+CONFIG_DM_ETH=y
+CONFIG_RENESAS_RAVB=y
+CONFIG_PINCTRL=y
+CONFIG_PINCONF=y
+CONFIG_PINCTRL_PFC=y
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_REGULATOR_GPIO=y
+CONFIG_SCIF_CONSOLE=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_GENERIC=y
+CONFIG_USB_STORAGE=y
+CONFIG_SMBIOS_MANUFACTURER=""

include/configs/draak.h

@@ -0,0 +1,47 @@
+/*
+ * include/configs/draak.h
+ *     This file is Draak board configuration.
+ *
+ * Copyright (C) 2015 Renesas Electronics Corporation
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __DRAAK_H
+#define __DRAAK_H
+
+#undef DEBUG
+
+#include "rcar-gen3-common.h"
+
+/* Ethernet RAVB */
+#define CONFIG_NET_MULTI
+#define CONFIG_BITBANGMII
+#define CONFIG_BITBANGMII_MULTI
+
+/* Board Clock */
+/* XTAL_CLK : 33.33MHz */
+#define CONFIG_SYS_CLK_FREQ	33333333u
+
+/* Generic Timer Definitions (use in assembler source) */
+#define COUNTER_FREQUENCY	0xFE502A	/* 16.66MHz from CPclk */
+
+/* Environment in eMMC, at the end of 2nd "boot sector" */
+#define CONFIG_ENV_OFFSET		(-CONFIG_ENV_SIZE)
+#define CONFIG_SYS_MMC_ENV_DEV		1
+#define CONFIG_SYS_MMC_ENV_PART		2
+
+#define CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
+#define CONFIG_FLASH_CFI_DRIVER
+#define CONFIG_FLASH_CFI_MTD
+#define CONFIG_FLASH_SHOW_PROGRESS	45
+#define CONFIG_MTD_DEVICE
+#define CONFIG_SYS_FLASH_BANKS_LIST	{ 0x08000000 }
+#define CONFIG_SYS_FLASH_CFI
+#define CONFIG_SYS_FLASH_CFI_WIDTH	FLASH_CFI_16BIT
+#define CONFIG_SYS_MAX_FLASH_BANKS_DETECT	1
+#define CONFIG_SYS_MAX_FLASH_SECT	256
+#define CONFIG_SYS_WRITE_SWAPPED_DATA
+#define CONFIG_CMD_CACHE
+
+#endif /* __DRAAK_H */