ARM: rockchip: Add rv1108-elgin-r1 board support

Add the initial support for Elgin R1 board, which is based on the
RV1108 SoC and has the following features currently supported in
U-Boot:

- UART
- eMMC
- USB

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

4 files changed, 102 insertions, 0 deletions

diff --git a/board/elgin/elgin_rv1108/Kconfig b/board/elgin/elgin_rv1108/Kconfig
new file mode 100644
index 0000000000..be9243164a
--- /dev/null
+++ b/board/elgin/elgin_rv1108/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_ELGIN_RV1108
+
+config SYS_BOARD
+	default "elgin_rv1108"
+
+config SYS_VENDOR
+	default "elgin"
+
+config SYS_CONFIG_NAME
+	default "elgin_rv1108"
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+
+endif
diff --git a/board/elgin/elgin_rv1108/MAINTAINERS b/board/elgin/elgin_rv1108/MAINTAINERS
new file mode 100644
index 0000000000..7747490163
--- /dev/null
+++ b/board/elgin/elgin_rv1108/MAINTAINERS
@@ -0,0 +1,6 @@
+ELGIN-RV1108
+M:      Otavio Salvador <otavio@ossystems.com.br>
+S:      Maintained
+F:      board/elgin/elgin_rv1108
+F:      include/configs/elgin_rv1108.h
+F:      configs/elgin-rv1108_defconfig
diff --git a/board/elgin/elgin_rv1108/Makefile b/board/elgin/elgin_rv1108/Makefile
new file mode 100644
index 0000000000..382218006a
--- /dev/null
+++ b/board/elgin/elgin_rv1108/Makefile
@@ -0,0 +1,7 @@
+#
+# (C) Copyright 2016 Rockchip Electronics Co., Ltd
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+obj-y	+= elgin_rv1108.o
diff --git a/board/elgin/elgin_rv1108/elgin_rv1108.c b/board/elgin/elgin_rv1108/elgin_rv1108.c
new file mode 100644
index 0000000000..3abc514412
--- /dev/null
+++ b/board/elgin/elgin_rv1108/elgin_rv1108.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C)Copyright 2016 Rockchip Electronics Co., Ltd
+ * Authors: Andy Yan <andy.yan@rock-chips.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <fdtdec.h>
+#include <asm/arch/grf_rv1108.h>
+#include <asm/arch/hardware.h>
+#include <asm/gpio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int mach_cpu_init(void)
+{
+	int node;
+	struct rv1108_grf *grf;
+	enum {
+		GPIO3C3_SHIFT           = 6,
+		GPIO3C3_MASK            = 3 << GPIO3C3_SHIFT,
+
+		GPIO3C2_SHIFT           = 4,
+		GPIO3C2_MASK            = 3 << GPIO3C2_SHIFT,
+
+		GPIO2D2_SHIFT		= 4,
+		GPIO2D2_MASK		= 3 << GPIO2D2_SHIFT,
+		GPIO2D2_GPIO            = 0,
+		GPIO2D2_UART2_SOUT_M0,
+
+		GPIO2D1_SHIFT		= 2,
+		GPIO2D1_MASK		= 3 << GPIO2D1_SHIFT,
+		GPIO2D1_GPIO            = 0,
+		GPIO2D1_UART2_SIN_M0,
+	};
+
+	node = fdt_node_offset_by_compatible(gd->fdt_blob, -1, "rockchip,rv1108-grf");
+	grf = (struct rv1108_grf *)fdtdec_get_addr(gd->fdt_blob, node, "reg");
+
+	/* Elgin board use UART2 m0 for debug*/
+	rk_clrsetreg(&grf->gpio2d_iomux,
+		     GPIO2D2_MASK | GPIO2D1_MASK,
+		     GPIO2D2_UART2_SOUT_M0 << GPIO2D2_SHIFT |
+		     GPIO2D1_UART2_SIN_M0 << GPIO2D1_SHIFT);
+	rk_clrreg(&grf->gpio3c_iomux, GPIO3C3_MASK | GPIO3C2_MASK);
+
+	return 0;
+}
+
+#define MODEM_ENABLE_GPIO 111
+
+int board_init(void)
+{
+	gpio_request(MODEM_ENABLE_GPIO, "modem_enable");
+	gpio_direction_output(MODEM_ENABLE_GPIO, 0);
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	gd->ram_size = 0x8000000;
+
+	return 0;
+}
+
+int dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = 0x60000000;
+	gd->bd->bi_dram[0].size = 0x8000000;
+
+	return 0;
+}