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drivers: uart_nsim: Add device tree support

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Add Device Tree support for uart nsim ARC driver.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit is contained in:
Kumar Gala 2019-01-29 09:21:29 -06:00 committed by Kumar Gala
parent 136ab0036e
commit 352234e0b6
5 changed files with 41 additions and 22 deletions
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3
boards/arc/nsim_em/Kconfig.defconfig
View file

@ -12,9 +12,6 @@ if SERIAL
config UART_NSIM
default y
config UART_NSIM_PORT_0_BASE_ADDR
default 0xf0000000
endif # SERIAL

8
boards/arc/nsim_em/nsim_em.dts
View file

@ -42,7 +42,15 @@
reg = <0x80000000 0x80000>;
};
uart0: uart@f0000000 {
compatible = "snps,nsim-uart";
reg = <0xf0000000 0x100>;
label = "UART_0";
};
chosen {
zephyr,sram = &dccm0;
zephyr,console = &uart0;
zephyr,shell-uart = &uart0;
};
};

17
drivers/serial/Kconfig.nsim
View file

@ -4,20 +4,3 @@ config UART_NSIM
depends on SERIAL
help
This enables the UART driver for the MetaWare nSim simulator.
config UART_NSIM_PORT_0_NAME
string "Port 0 Device Name"
default "UART_0"
depends on UART_NSIM
help
This is the device name for UART, and is included in the device
struct.
config UART_NSIM_PORT_0_BASE_ADDR
hex "Port 0 Register Address"
default 0x00000000
depends on UART_NSIM
help
The base address of UART port.
Leave this at 0x00000000 to skip initialization at boot.

4
drivers/serial/uart_nsim.c
View file

@ -108,10 +108,10 @@ static const struct uart_driver_api uart_nsim_driver_api = {
};
static struct uart_device_config uart_nsim_dev_cfg_0 = {
.regs = CONFIG_UART_NSIM_PORT_0_BASE_ADDR,
.regs = DT_SNPS_NSIM_UART_0_BASE_ADDRESS,
};
DEVICE_AND_API_INIT(uart_nsim0, CONFIG_UART_NSIM_PORT_0_NAME, &uart_nsim_init,
DEVICE_AND_API_INIT(uart_nsim0, DT_SNPS_NSIM_UART_0_LABEL, &uart_nsim_init,
NULL, &uart_nsim_dev_cfg_0,
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&uart_nsim_driver_api);

31
dts/bindings/serial/snps,nsim-uart.yaml Normal file
View file

@ -0,0 +1,31 @@
#
# Copyright (c) 2019, Linaro Limited
#
# SPDX-License-Identifier: Apache-2.0
#
---
title: Synopsys ARC nSIM UART
version: 0.1
description: >
This binding gives a base representation of the Synopsys ARC nSIM UART
inherits:
!include uart.yaml
properties:
compatible:
constraint: "snps,nsim-uart"
reg:
type: array
description: mmio register space
generation: define
category: required
interrupts:
type: array
category: required
description: required interrupts
generation: define
...