michaelh/zephyr
1
0
Fork 0
Code Releases Activity

drivers: serial: pl011: Add capability for handling reset device

Browse source 
Reset the device on initializing if the node inherits
`reset-device.yaml`.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
This commit is contained in:
TOKITA Hiroshi 2024-04-04 07:00:17 +09:00 • committed by Carles Cufí
commit 80b8ef80b3
1 changed files with 22 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

22
drivers/serial/uart_pl011.c
View file

@ -21,6 +21,9 @@
#if defined(CONFIG_PINCTRL) #if defined(CONFIG_PINCTRL)
#include <zephyr/drivers/pinctrl.h> #include <zephyr/drivers/pinctrl.h>
#endif #endif
#if IS_ENABLED(CONFIG_RESET)
#include <zephyr/drivers/reset.h>
#endif
#ifdef CONFIG_CPU_CORTEX_M #ifdef CONFIG_CPU_CORTEX_M
#include <cmsis_compiler.h> #include <cmsis_compiler.h>
@ -35,6 +38,9 @@ struct pl011_config {
#if defined(CONFIG_PINCTRL) #if defined(CONFIG_PINCTRL)
const struct pinctrl_dev_config *pincfg; const struct pinctrl_dev_config *pincfg;
#endif #endif
#if IS_ENABLED(CONFIG_RESET)
const struct reset_dt_spec reset;
#endif
#ifdef CONFIG_UART_INTERRUPT_DRIVEN #ifdef CONFIG_UART_INTERRUPT_DRIVEN
uart_irq_config_func_t irq_config_func; uart_irq_config_func_t irq_config_func;
#endif #endif
@ -408,6 +414,15 @@ static int pl011_init(const struct device *dev)
DEVICE_MMIO_MAP(dev, K_MEM_CACHE_NONE); DEVICE_MMIO_MAP(dev, K_MEM_CACHE_NONE);
#if IS_ENABLED(CONFIG_RESET)
if (config->reset.dev) {
ret = reset_line_toggle_dt(&config->reset);
if (ret) {
return ret;
}
}
#endif
/* /*
* If working in SBSA mode, we assume that UART is already configured, * If working in SBSA mode, we assume that UART is already configured,
* or does not require configuration at all (if UART is emulated by * or does not require configuration at all (if UART is emulated by
@ -505,6 +520,13 @@ static int pl011_init(const struct device *dev)
#define PINCTRL_INIT(n) #define PINCTRL_INIT(n)
#endif /* CONFIG_PINCTRL */ #endif /* CONFIG_PINCTRL */
#if IS_ENABLED(CONFIG_RESET)
#define RESET_INIT(n) \
IF_ENABLED(DT_INST_NODE_HAS_PROP(0, resets), (.reset = RESET_DT_SPEC_INST_GET(n),))
#else
#define RESET_INIT(n)
#endif
#define ARM_PL011_DEFINE(n) \ #define ARM_PL011_DEFINE(n) \
static inline int pwr_on_arm_pl011_##n(void) \ static inline int pwr_on_arm_pl011_##n(void) \
{ \ { \