Skip to content

Commit f970596

Browse files
duynguyenxakartben
duynguyenxa
authored and
kartben
committed
drivers: mdio: Initial support for renesas RA mdio driver
Add support for mdio driver for Renesas RA MCU series This support utilize the r_ether_phy driver in hal renesas to support mdio write and read function Signed-off-by: Duy Nguyen <[email protected]>
1 parent f5285be commit f970596

File tree

6 files changed

+156
-0
lines changed

6 files changed

+156
-0
lines changed

‎drivers/mdio/CMakeLists.txt

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -16,3 +16,4 @@ zephyr_library_sources_ifdef(CONFIG_MDIO_ST_STM32_HAL mdio_stm32_hal.c)
1616
zephyr_library_sources_ifdef(CONFIG_MDIO_INFINEON_XMC4XXX mdio_xmc4xxx.c)
1717
zephyr_library_sources_ifdef(CONFIG_MDIO_NXP_ENET_QOS mdio_nxp_enet_qos.c)
1818
zephyr_library_sources_ifdef(CONFIG_MDIO_DWCXGMAC mdio_dwcxgmac.c)
19+
zephyr_library_sources_ifdef(CONFIG_MDIO_RENESAS_RA mdio_renesas_ra.c)

‎drivers/mdio/Kconfig

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -37,6 +37,7 @@ source "drivers/mdio/Kconfig.stm32_hal"
3737
source "drivers/mdio/Kconfig.xmc4xxx"
3838
source "drivers/mdio/Kconfig.nxp_enet_qos"
3939
source "drivers/mdio/Kconfig.dwcxgmac"
40+
source "drivers/mdio/Kconfig.renesas_ra"
4041

4142
config MDIO_INIT_PRIORITY
4243
int "Init priority"

‎drivers/mdio/Kconfig.renesas_ra

Lines changed: 11 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,11 @@
1+
# Copyright (c) 2024 Renesas Electronics Corporation
2+
# SPDX-License-Identifier: Apache-2.0
3+
4+
config MDIO_RENESAS_RA
5+
bool "RENESAS MDIO controller driver"
6+
default y
7+
depends on DT_HAS_RENESAS_RA_MDIO_ENABLED
8+
select PINCTRL
9+
select USE_RA_FSP_ETHER_PHY
10+
help
11+
Enable RENESAS MDIO support.

‎drivers/mdio/mdio_renesas_ra.c

Lines changed: 123 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,123 @@
1+
/*
2+
* Copyright (c) 2024 Renesas Electronics Corporation
3+
*
4+
* SPDX-License-Identifier: Apache-2.0
5+
*/
6+
7+
#include <stdint.h>
8+
#include <errno.h>
9+
#include <zephyr/device.h>
10+
#include <zephyr/kernel.h>
11+
#include <zephyr/drivers/pinctrl.h>
12+
#include <zephyr/drivers/mdio.h>
13+
#include <zephyr/net/ethernet.h>
14+
#include <zephyr/net/mdio.h>
15+
#include "r_ether_phy.h"
16+
17+
#include <zephyr/logging/log.h>
18+
19+
LOG_MODULE_REGISTER(renesas_ra_mdio, CONFIG_MDIO_LOG_LEVEL);
20+
21+
#define DT_DRV_COMPAT renesas_ra_mdio
22+
23+
struct renesas_ra_mdio_config {
24+
const struct pinctrl_dev_config *pincfg;
25+
uint8_t instance;
26+
};
27+
28+
struct renesas_ra_mdio_data {
29+
struct k_mutex rw_mutex;
30+
struct st_ether_phy_cfg ether_phy_cfg;
31+
struct st_ether_phy_instance_ctrl ether_phy_ctrl;
32+
};
33+
34+
static int renesas_ra_mdio_read(const struct device *dev, uint8_t prtad, uint8_t regad,
35+
uint16_t *data)
36+
{
37+
struct renesas_ra_mdio_data *dev_data = dev->data;
38+
uint32_t read;
39+
fsp_err_t err;
40+
41+
dev_data->ether_phy_ctrl.phy_lsi_address = prtad;
42+
43+
k_mutex_lock(&dev_data->rw_mutex, K_FOREVER);
44+
45+
err = R_ETHER_PHY_Read(&dev_data->ether_phy_ctrl, regad, &read);
46+
47+
k_mutex_unlock(&dev_data->rw_mutex);
48+
49+
if (err != FSP_SUCCESS) {
50+
return -EIO;
51+
}
52+
53+
*data = read & UINT16_MAX;
54+
55+
return 0;
56+
}
57+
58+
static int renesas_ra_mdio_write(const struct device *dev, uint8_t prtad, uint8_t regad,
59+
uint16_t data)
60+
{
61+
struct renesas_ra_mdio_data *dev_data = dev->data;
62+
fsp_err_t err;
63+
64+
dev_data->ether_phy_ctrl.phy_lsi_address = prtad;
65+
66+
k_mutex_lock(&dev_data->rw_mutex, K_FOREVER);
67+
68+
err = R_ETHER_PHY_Write(&dev_data->ether_phy_ctrl, regad, data);
69+
70+
k_mutex_unlock(&dev_data->rw_mutex);
71+
72+
if (err != FSP_SUCCESS) {
73+
return -EIO;
74+
}
75+
76+
return 0;
77+
}
78+
79+
static int renesas_ra_mdio_initialize(const struct device *dev)
80+
{
81+
struct renesas_ra_mdio_data *data = dev->data;
82+
const struct renesas_ra_mdio_config *cfg = dev->config;
83+
int err;
84+
fsp_err_t fsp_err;
85+
86+
err = pinctrl_apply_state(cfg->pincfg, PINCTRL_STATE_DEFAULT);
87+
if (err != 0) {
88+
return err;
89+
}
90+
91+
fsp_err = R_ETHER_PHY_Open(&data->ether_phy_ctrl, &data->ether_phy_cfg);
92+
93+
if (fsp_err != FSP_SUCCESS) {
94+
LOG_ERR("Failed to init mdio driver - R_ETHER_PHY_Open fail");
95+
}
96+
97+
k_mutex_init(&data->rw_mutex);
98+
99+
return 0;
100+
}
101+
102+
static DEVICE_API(mdio, renesas_ra_mdio_api) = {
103+
.read = renesas_ra_mdio_read,
104+
.write = renesas_ra_mdio_write,
105+
};
106+
107+
#define RENSAS_RA_MDIO_INSTANCE_DEFINE(node) \
108+
PINCTRL_DT_INST_DEFINE(node); \
109+
static struct renesas_ra_mdio_data renesas_ra_mdio##node##_data = { \
110+
.ether_phy_cfg = { \
111+
.channel = 0, \
112+
.phy_reset_wait_time = 0x00020000, \
113+
.mii_bit_access_wait_time = 8, \
114+
.phy_lsi_type = ETHER_PHY_LSI_TYPE_CUSTOM, \
115+
.flow_control = ETHER_PHY_FLOW_CONTROL_DISABLE, \
116+
}}; \
117+
static const struct renesas_ra_mdio_config renesas_ra_mdio##node##_cfg = { \
118+
.pincfg = PINCTRL_DT_INST_DEV_CONFIG_GET(node)}; \
119+
DEVICE_DT_INST_DEFINE(node, &renesas_ra_mdio_initialize, NULL, \
120+
&renesas_ra_mdio##node##_data, &renesas_ra_mdio##node##_cfg, \
121+
POST_KERNEL, CONFIG_MDIO_INIT_PRIORITY, &renesas_ra_mdio_api);
122+
123+
DT_INST_FOREACH_STATUS_OKAY(RENSAS_RA_MDIO_INSTANCE_DEFINE)

‎dts/bindings/mdio/renesas,ra-mdio.yaml

Lines changed: 15 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,15 @@
1+
# Copyright (c) 2024 Renesas Electronics Corporation
2+
# SPDX-License-Identifier: Apache-2.0
3+
4+
description: Renesas RA External MDIO controller
5+
6+
compatible: "renesas,ra-mdio"
7+
8+
include: [mdio-controller.yaml, pinctrl-device.yaml]
9+
10+
properties:
11+
pinctrl-0:
12+
required: true
13+
14+
pinctrl-names:
15+
required: true

‎modules/Kconfig.renesas_fsp

Lines changed: 5 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -81,4 +81,9 @@ config USE_RA_FSP_CANFD
8181
help
8282
Enable RA FSP CANFD driver
8383

84+
config USE_RA_FSP_ETHER_PHY
85+
bool
86+
help
87+
Enable RA FSP Ethernet phy driver
88+
8489
endif # HAS_RENESAS_RA_FSP

0 commit comments

Comments
 (0)