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drivers: serial: RCar add pinctrl support

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Get pin configuration from device tree to
set alternate pin function.

Signed-off-by: Aymeric Aillet <aymeric.aillet@iot.bzh>
This commit is contained in:
Aymeric Aillet 2022-01-18 13:35:00 +01:00 • committed by Anas Nashif
commit 37f5fe5e82
2 changed files with 11 additions and 1 deletions
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10
drivers/serial/uart_rcar.c
View file

@ -12,6 +12,7 @@
#include <drivers/uart.h>
#include <drivers/clock_control.h>
#include <drivers/clock_control/rcar_clock_control.h>
#include <drivers/pinctrl.h>
#include <spinlock.h>
struct uart_rcar_cfg {
@ -19,6 +20,7 @@ struct uart_rcar_cfg {
const struct device *clock_dev;
struct rcar_cpg_clk mod_clk;
struct rcar_cpg_clk bus_clk;
const struct pinctrl_dev_config *pcfg;
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
void (*irq_config_func)(const struct device *dev);
#endif
@ -271,6 +273,12 @@ static int uart_rcar_init(const struct device *dev)
struct uart_rcar_data *data = DEV_UART_DATA(dev);
int ret;
/* Configure dt provided device signals when available */
ret = pinctrl_apply_state(config->pcfg, PINCTRL_STATE_DEFAULT);
if (ret < 0) {
return ret;
}
ret = clock_control_on(config->clock_dev,
(clock_control_subsys_t *)&config->mod_clk);
if (ret < 0) {
@ -527,6 +535,7 @@ static const struct uart_driver_api uart_rcar_driver_api = {
/* Device Instantiation */
#define UART_RCAR_DECLARE_CFG(n, IRQ_FUNC_INIT) \
PINCTRL_DT_INST_DEFINE(n); \
static const struct uart_rcar_cfg uart_rcar_cfg_##n = { \
.reg_addr = DT_INST_REG_ADDR(n), \
.clock_dev = DEVICE_DT_GET(DT_INST_CLOCKS_CTLR(n)), \
@ -538,6 +547,7 @@ static const struct uart_driver_api uart_rcar_driver_api = {
DT_INST_CLOCKS_CELL_BY_IDX(n, 1, module), \
.bus_clk.domain = \
DT_INST_CLOCKS_CELL_BY_IDX(n, 1, domain), \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(n), \
IRQ_FUNC_INIT \
}

2
dts/bindings/serial/renesas,rcar-scif.yaml
View file

@ -5,7 +5,7 @@ description: Renesas R-Car UART controller
compatible: "renesas,rcar-scif"
include: uart-controller.yaml
include: [uart-controller.yaml, pinctrl-device.yaml]
properties:
reg: