Use driver model for serial ports.
Since Tegra now uses driver model for serial, adjust the definition of
V_NS16550_CLK so that it is clear that this is only used for SPL.
Signed-off-by: Simon Glass <s...@chromium.org>
---
Changes in v5: None
Changes in v4:
- Add a separate Tegra serial driver to deal with the clock issue
- Add new CONFIG_TEGRA_SERIAL option to enable dm driver
- Use hard-coded UART clock from Tegra configuration
Changes in v3:
- Add new patch to enable driver model for serial on tegra
- Add new patch to use V_NS16550_CLK only in SPL builds
Changes in v2: None
drivers/serial/Makefile | 1 +
drivers/serial/serial_tegra.c | 38 ++++++++++++++++++++++++++++++++++++++
include/configs/tegra-common.h | 9 ++++++++-
3 files changed, 47 insertions(+), 1 deletion(-)
create mode 100644 drivers/serial/serial_tegra.c
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 5ae6416..853a8c6 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -38,6 +38,7 @@ obj-$(CONFIG_BFIN_SERIAL) += serial_bfin.o
obj-$(CONFIG_FSL_LPUART) += serial_lpuart.o
obj-$(CONFIG_MXS_AUART) += mxs_auart.o
obj-$(CONFIG_ARC_SERIAL) += serial_arc.o
+obj-$(CONFIG_TEGRA_SERIAL) += serial_tegra.o
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_USB_TTY) += usbtty.o
diff --git a/drivers/serial/serial_tegra.c b/drivers/serial/serial_tegra.c
new file mode 100644
index 0000000..7eb70e1
--- /dev/null
+++ b/drivers/serial/serial_tegra.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2014 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <ns16550.h>
+#include <serial.h>
+
+static const struct udevice_id tegra_serial_ids[] = {
+ { .compatible = "nvidia,tegra20-uart" },
+ { }
+};
+
+static int tegra_serial_ofdata_to_platdata(struct udevice *dev)
+{
+ struct ns16550_platdata *plat = dev_get_platdata(dev);
+ int ret;
+
+ ret = ns16550_serial_ofdata_to_platdata(dev);
+ if (ret)
+ return ret;
+ plat->clock = V_NS16550_CLK;
+
+ return 0;
+}
+U_BOOT_DRIVER(serial_ns16550) = {
+ .name = "serial_tegra20",
+ .id = UCLASS_SERIAL,
+ .of_match = tegra_serial_ids,
+ .ofdata_to_platdata = tegra_serial_ofdata_to_platdata,
+ .platdata_auto_alloc_size = sizeof(struct ns16550_platdata),
+ .priv_auto_alloc_size = sizeof(struct NS16550),
+ .probe = ns16550_serial_probe,
+ .ops = &ns16550_serial_ops,
+};
diff --git a/include/configs/tegra-common.h b/include/configs/tegra-common.h
index f1187f1..834b3d5 100644
--- a/include/configs/tegra-common.h
+++ b/include/configs/tegra-common.h
@@ -21,6 +21,9 @@
#define CONFIG_DM
#define CONFIG_CMD_DM
#define CONFIG_DM_GPIO
+#ifndef CONFIG_SPL_BUILD
+#define CONFIG_DM_SERIAL
+#endif
#define CONFIG_SYS_TIMER_RATE 1000000
#define CONFIG_SYS_TIMER_COUNTER NV_PA_TMRUS_BASE
@@ -46,10 +49,14 @@
/*
* NS16550 Configuration
*/
-#define CONFIG_SYS_NS16550
+#ifdef CONFIG_SPL_BUILD
#define CONFIG_SYS_NS16550_SERIAL
#define CONFIG_SYS_NS16550_REG_SIZE (-4)
#define CONFIG_SYS_NS16550_CLK V_NS16550_CLK
+#else
+#define CONFIG_TEGRA_SERIAL
+#endif
+#define CONFIG_SYS_NS16550
/*
* Common HW configuration.
--
2.1.0.rc2.206.gedb03e5
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