diff options
| author | Simon Glass <sjg@chromium.org> | 2016-07-04 11:58:24 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-07-14 20:40:24 -0600 |
| commit | 2fc24d5335a35a4880fdc04cf4d45754d29cd415 (patch) | |
| tree | 52e7f2753342d8b89d311118cafba32cb9819ae4 /drivers/serial | |
| parent | b2927fbaa89d2c7f7ac3977bc0cab2a4b7924acd (diff) | |
rockchip: serial: Add an of-platdata driver for rockchip
Add a driver that works with of-platdata. It sets up the platform data and
calls the standard ns16550 driver.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/serial/Makefile | 3 | ||||
| -rw-r--r-- | drivers/serial/serial_rockchip.c | 43 |
3 files changed, 55 insertions, 0 deletions
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 0e3890391b..9ff7234d61 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -312,6 +312,15 @@ config SYS_NS16550 be used. It can be a constant or a function to get clock, eg, get_serial_clock(). +config ROCKCHIP_SERIAL + bool "Rockchip on-chip UART support" + depends on DM_SERIAL && SPL_OF_PLATDATA + help + Select this to enable a debug UART for Rockchip devices when using + CONFIG_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt). + This uses the ns16550 driver, converting the platdata from of-platdata + to the ns16550 format. + config SANDBOX_SERIAL bool "Sandbox UART support" depends on SANDBOX diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index 92cbea5913..6986d659ab 100644 --- a/drivers/serial/Makefile +++ b/drivers/serial/Makefile @@ -28,6 +28,9 @@ obj-$(CONFIG_S5P) += serial_s5p.o obj-$(CONFIG_MXC_UART) += serial_mxc.o obj-$(CONFIG_PXA_SERIAL) += serial_pxa.o obj-$(CONFIG_MESON_SERIAL) += serial_meson.o +ifdef CONFIG_SPL_BUILD +obj-$(CONFIG_ROCKCHIP_SERIAL) += serial_rockchip.o +endif obj-$(CONFIG_S3C24X0_SERIAL) += serial_s3c24x0.o obj-$(CONFIG_XILINX_UARTLITE) += serial_xuartlite.o obj-$(CONFIG_SANDBOX_SERIAL) += sandbox.o diff --git a/drivers/serial/serial_rockchip.c b/drivers/serial/serial_rockchip.c new file mode 100644 index 0000000000..6bac95a414 --- /dev/null +++ b/drivers/serial/serial_rockchip.c @@ -0,0 +1,43 @@ +/* + * Copyright (c) 2015 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <debug_uart.h> +#include <dm.h> +#include <dt-structs.h> +#include <ns16550.h> +#include <serial.h> +#include <asm/arch/clock.h> + +struct rockchip_uart_platdata { + struct dtd_rockchip_rk3288_uart dtplat; + struct ns16550_platdata plat; +}; + +struct dtd_rockchip_rk3288_uart *dtplat, s_dtplat; + +static int rockchip_serial_probe(struct udevice *dev) +{ + struct rockchip_uart_platdata *plat = dev_get_platdata(dev); + + /* Create some new platform data for the standard driver */ + plat->plat.base = plat->dtplat.reg[0]; + plat->plat.reg_shift = plat->dtplat.reg_shift; + plat->plat.clock = plat->dtplat.clock_frequency; + dev->platdata = &plat->plat; + + return ns16550_serial_probe(dev); +} + +U_BOOT_DRIVER(rockchip_rk3288_uart) = { + .name = "rockchip_rk3288_uart", + .id = UCLASS_SERIAL, + .priv_auto_alloc_size = sizeof(struct NS16550), + .platdata_auto_alloc_size = sizeof(struct rockchip_uart_platdata), + .probe = rockchip_serial_probe, + .ops = &ns16550_serial_ops, + .flags = DM_FLAG_PRE_RELOC, +}; |