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| author | Stefan Agner <stefan.agner@toradex.com> | 2016-10-05 15:27:03 -0700 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2016-10-07 12:26:14 +0200 |
| commit | a99546ab6294e11b71dfbeee7f2432b1f028f65d (patch) | |
| tree | e22cee3db2be0ac8105d393514628e05754ce333 | |
| parent | 5b0d03b306b8d3010835d8b191bfc0581735021f (diff) | |
| download | u-boot-a99546ab6294e11b71dfbeee7f2432b1f028f65d.tar.gz u-boot-a99546ab6294e11b71dfbeee7f2432b1f028f65d.tar.bz2 u-boot-a99546ab6294e11b71dfbeee7f2432b1f028f65d.zip | |
dm: imx: serial: support device tree
Support instatiation through device tree. Also parse the fsl,dte-mode
property to determine whether DTE mode shall be used.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | doc/device-tree-bindings/serial/mxc-serial.txt | 8 | ||||
| -rw-r--r-- | drivers/serial/serial_mxc.c | 32 |
2 files changed, 38 insertions, 2 deletions
diff --git a/doc/device-tree-bindings/serial/mxc-serial.txt b/doc/device-tree-bindings/serial/mxc-serial.txt new file mode 100644 index 0000000000..ede92a4854 --- /dev/null +++ b/doc/device-tree-bindings/serial/mxc-serial.txt @@ -0,0 +1,8 @@ +NXP i.MX (MXC) UART + +Required properties: +- compatible: must be "fsl,imx7d-uart" +- reg: start address and size of the registers + +Optional properties: +- fsl,dte-mode: use DTE mode diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c index 8545714411..4fd2b1dd05 100644 --- a/drivers/serial/serial_mxc.c +++ b/drivers/serial/serial_mxc.c @@ -108,6 +108,8 @@ #define UTS_RXFULL (1<<3) /* RxFIFO full */ #define UTS_SOFTRST (1<<0) /* Software reset */ +DECLARE_GLOBAL_DATA_PTR; + #ifndef CONFIG_DM_SERIAL #ifndef CONFIG_MXC_UART_BASE @@ -135,8 +137,6 @@ #define UBRC 0xac /* Baud Rate Count Register */ #define UTS 0xb4 /* UART Test Register (mx31) */ -DECLARE_GLOBAL_DATA_PTR; - #define TXTL 2 /* reset default */ #define RXTL 1 /* reset default */ #define RFDIV 4 /* divide input clock by 2 */ @@ -347,9 +347,37 @@ static const struct dm_serial_ops mxc_serial_ops = { .setbrg = mxc_serial_setbrg, }; +#if CONFIG_IS_ENABLED(OF_CONTROL) +static int mxc_serial_ofdata_to_platdata(struct udevice *dev) +{ + struct mxc_serial_platdata *plat = dev->platdata; + fdt_addr_t addr; + + addr = dev_get_addr(dev); + if (addr == FDT_ADDR_T_NONE) + return -EINVAL; + + plat->reg = (struct mxc_uart *)addr; + + plat->use_dte = fdtdec_get_bool(gd->fdt_blob, dev->of_offset, + "fsl,dte-mode"); + return 0; +} + +static const struct udevice_id mxc_serial_ids[] = { + { .compatible = "fsl,imx7d-uart" }, + { } +}; +#endif + U_BOOT_DRIVER(serial_mxc) = { .name = "serial_mxc", .id = UCLASS_SERIAL, +#if CONFIG_IS_ENABLED(OF_CONTROL) + .of_match = mxc_serial_ids, + .ofdata_to_platdata = mxc_serial_ofdata_to_platdata, + .platdata_auto_alloc_size = sizeof(struct mxc_serial_platdata), +#endif .probe = mxc_serial_probe, .ops = &mxc_serial_ops, .flags = DM_FLAG_PRE_RELOC, |