diff options
| author | Paul Barker <paul.barker.ct@bp.renesas.com> | 2025-03-19 12:03:58 +0000 |
|---|---|---|
| committer | Marek Vasut <marek.vasut+renesas@mailbox.org> | 2025-05-04 20:25:03 +0200 |
| commit | 46706c3427e7537bbb7bc6ab3742a5b74b996f73 (patch) | |
| tree | 6c94b343d377c03cf269b75e54f2bbeba2c4f115 | |
| parent | ba2d1d7666cb88f5efdfd4ad1fd89a02603269b2 (diff) | |
net: ravb: Add optional reset deassertion
In order to add support for the Renesas RZ/G2L Ethernet IP in a
subsequent patch, we introduce optional de-assertion and re-assertion of
a reset signal in ravb_probe() and ravb_remove().
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
| -rw-r--r-- | drivers/net/ravb.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/drivers/net/ravb.c b/drivers/net/ravb.c index 5aac9e60044..43e95bc33be 100644 --- a/drivers/net/ravb.c +++ b/drivers/net/ravb.c @@ -23,6 +23,7 @@ #include <asm/io.h> #include <asm/global_data.h> #include <asm/gpio.h> +#include <reset.h> /* Registers */ #define RAVB_REG_CCC 0x000 @@ -111,6 +112,7 @@ struct ravb_device_ops { void (*mac_init)(struct udevice *dev); void (*dmac_init)(struct udevice *dev); void (*config)(struct udevice *dev); + bool has_reset; }; struct ravb_desc { @@ -136,6 +138,7 @@ struct ravb_priv { struct mii_dev *bus; void __iomem *iobase; struct clk_bulk clks; + struct reset_ctl rst; }; static inline void ravb_flush_dcache(u32 addr, u32 len) @@ -612,6 +615,8 @@ static int ravb_bb_miiphy_write(struct mii_dev *miidev, int addr, static int ravb_probe(struct udevice *dev) { + struct ravb_device_ops *device_ops = + (struct ravb_device_ops *)dev_get_driver_data(dev); struct eth_pdata *pdata = dev_get_plat(dev); struct ravb_priv *eth = dev_get_priv(dev); struct mii_dev *mdiodev; @@ -647,16 +652,32 @@ static int ravb_probe(struct udevice *dev) if (ret) goto err_clk_enable; + if (device_ops->has_reset) { + ret = reset_get_by_index(dev, 0, ð->rst); + if (ret < 0) + goto err_clk_enable; + + ret = reset_deassert(ð->rst); + if (ret < 0) + goto err_reset_deassert; + } + ret = ravb_reset(dev); if (ret) - goto err_clk_enable; + goto err_ravb_reset; ret = ravb_phy_config(dev); if (ret) - goto err_clk_enable; + goto err_ravb_reset; return 0; +err_ravb_reset: + if (device_ops->has_reset) + reset_assert(ð->rst); +err_reset_deassert: + if (device_ops->has_reset) + reset_free(ð->rst); err_clk_enable: mdio_unregister(mdiodev); err_mdio_register: @@ -670,8 +691,14 @@ err_clk_get: static int ravb_remove(struct udevice *dev) { + struct ravb_device_ops *device_ops = + (struct ravb_device_ops *)dev_get_driver_data(dev); struct ravb_priv *eth = dev_get_priv(dev); + if (device_ops->has_reset) { + reset_assert(ð->rst); + reset_free(ð->rst); + } clk_release_bulk(ð->clks); free(eth->phydev); |