sh: r2dplus: Enable OF control

Enable OF control for SH4 R2Dplus board. This is necessary, because
the PCI uclass is designed in a way that makes it depend on DT and
disallows instanciating devices without DT (e.g. with platdata).

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

arch/Kconfig

@@ -137,6 +137,7 @@ config SANDBOX
 config SH
 	bool "SuperH architecture"
 	select HAVE_PRIVATE_LIBGCC
+	select SUPPORT_OF_CONTROL
 
 config X86
 	bool "x86 architecture"

arch/sh/dts/Makefile

+dtb-y += sh7751-r2dplus.dtb
+
+targets += $(dtb-y)
+
+# Add any required device tree compiler flags here
+DTC_FLAGS +=
+
+PHONY += dtbs
+dtbs: $(addprefix $(obj)/, $(dtb-y))
+	@:
+
+clean-files := *.dtb *_HS

arch/sh/dts/sh7751-r2dplus.dts

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the SH7751 R2Dplus
+ *
+ * Copyright (C) 2019 Marek Vasut <marek.vasut@gmail.com>
+ */
+
+/dts-v1/;
+/ {
+	model = "R2D";
+	compatible = "renesas,r2d", "renesas,sh7751";
+};

arch/sh/include/asm/config.h

@@ -8,6 +8,8 @@
 
 #include <asm/processor.h>
 
+#define CONFIG_LMB
+
 /* Timer */
 #define CONFIG_SYS_TIMER_COUNTS_DOWN
 #define CONFIG_SYS_TIMER_COUNTER	(TMU_BASE + 0xc)	/* TCNT0 */

configs/r2dplus_defconfig

@@ -16,6 +16,8 @@ CONFIG_CMD_PING=y
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_EXT2=y
 CONFIG_DOS_PARTITION=y
+CONFIG_OF_CONTROL=y
+CONFIG_DEFAULT_DEVICE_TREE="sh7751-r2dplus"
 CONFIG_ENV_IS_IN_FLASH=y
 CONFIG_DM=y
 CONFIG_MTD_NOR_FLASH=y