[U-Boot] [PATCH v2 1/2] serial_sh: Add OF support

[Yoshinori Sato <ysato@users.sourceforge.jp>]

Add device tree support.

Changes v2:
rebased v2015.07-rc1

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 doc/device-tree-bindings/serial/sh.txt |  6 ++++++
 drivers/serial/serial_sh.c             | 28 ++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 doc/device-tree-bindings/serial/sh.txt

diff --git a/doc/device-tree-bindings/serial/sh.txt b/doc/device-tree-bindings/serial/sh.txt
new file mode 100644
index 0000000..b23b135
--- /dev/null
+++ b/doc/device-tree-bindings/serial/sh.txt
@@ -0,0 +1,6 @@
+* Renesas SCI serial interface
+
+Required properties:
+- compatible: must be "renesas,scif" or "renesas,scifa"
+- reg: exactly one register range with length
+- clock: input clock frequency for the SCI unit
diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c
index 8693c1e..32b2bf0 100644
--- a/drivers/serial/serial_sh.c
+++ b/drivers/serial/serial_sh.c
@@ -17,6 +17,8 @@
 #include <dm/platform_data/serial_sh.h>
 #include "serial_sh.h"
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #if defined(CONFIG_CPU_SH7760) || \
 	defined(CONFIG_CPU_SH7780) || \
 	defined(CONFIG_CPU_SH7785) || \
@@ -201,9 +203,35 @@ static const struct dm_serial_ops sh_serial_ops = {
 	.setbrg = sh_serial_setbrg,
 };
 
+#ifdef CONFIG_OF_CONTROL
+static const struct udevice_id sh_serial_id[] ={
+	{.compatible = "renesas,scif", .data = PORT_SCIF},
+	{.compatible = "renesas,scifa", .data = PORT_SCIFA},
+	{}
+};
+
+static int sh_serial_ofdata_to_platdata(struct udevice *dev)
+{
+	struct sh_serial_platdata *plat = dev_get_platdata(dev);
+	fdt_addr_t addr;
+
+	addr = fdtdec_get_addr(gd->fdt_blob, dev->of_offset, "reg");
+	if (addr == FDT_ADDR_T_NONE)
+		return -EINVAL;
+
+	plat->base = addr;
+	plat->clk = fdtdec_get_int(gd->fdt_blob, dev->of_offset, "clock", 1);
+	plat->type = dev_get_driver_data(dev);
+	return 0;
+}
+#endif
+
 U_BOOT_DRIVER(serial_sh) = {
 	.name	= "serial_sh",
 	.id	= UCLASS_SERIAL,
+	.of_match = of_match_ptr(sh_serial_id),
+	.ofdata_to_platdata = of_match_ptr(sh_serial_ofdata_to_platdata),
+	.platdata_auto_alloc_size = sizeof(struct sh_serial_platdata),
 	.probe	= sh_serial_probe,
 	.ops	= &sh_serial_ops,
 	.flags	= DM_FLAG_PRE_RELOC,
-- 
2.1.4