serial: fdt: add device tree support for pl01x
This patch adds device tree support for arm pl010/pl011 driver.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/serial/serial_pl01x.c b/drivers/serial/serial_pl01x.c
index 2124161..ad503af 100644
--- a/drivers/serial/serial_pl01x.c
+++ b/drivers/serial/serial_pl01x.c
@@ -20,6 +20,9 @@
#include <dm/platform_data/serial_pl01x.h>
#include <linux/compiler.h>
#include "serial_pl01x_internal.h"
+#include <fdtdec.h>
+
+DECLARE_GLOBAL_DATA_PTR;
#ifndef CONFIG_DM_SERIAL
@@ -28,7 +31,6 @@
static struct pl01x_regs *base_regs __attribute__ ((section(".data")));
#define NUM_PORTS (sizeof(port)/sizeof(port[0]))
-DECLARE_GLOBAL_DATA_PTR;
#endif
static int pl01x_putc(struct pl01x_regs *regs, char c)
@@ -351,9 +353,35 @@
.setbrg = pl01x_serial_setbrg,
};
+#ifdef CONFIG_OF_CONTROL
+static const struct udevice_id pl01x_serial_id[] ={
+ {.compatible = "arm,pl011", .data = TYPE_PL011},
+ {.compatible = "arm,pl010", .data = TYPE_PL010},
+ {}
+};
+
+static int pl01x_serial_ofdata_to_platdata(struct udevice *dev)
+{
+ struct pl01x_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->clock = 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_pl01x) = {
.name = "serial_pl01x",
.id = UCLASS_SERIAL,
+ .of_match = of_match_ptr(pl01x_serial_id),
+ .ofdata_to_platdata = of_match_ptr(pl01x_serial_ofdata_to_platdata),
+ .platdata_auto_alloc_size = sizeof(struct pl01x_serial_platdata),
.probe = pl01x_serial_probe,
.ops = &pl01x_serial_ops,
.flags = DM_FLAG_PRE_RELOC,