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net: ftgmac100: Add reset control

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Add optional reset control, especially for the Aspeed SOC. For the
hardware without a reset line, the reset assertion/deassertion will be
skipped.

Signed-off-by: Dylan Hung <dylan_hung@aspeedtech.com>
Reviewed-by: Ryan Chen <ryan_chen@aspeedtech.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
This commit is contained in:
Dylan Hung 2023-07-27 09:58:14 +08:00 committed by Tom Rini
parent 91953956d2
commit 607e7fa622
1 changed files with 12 additions and 0 deletions
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12
drivers/net/ftgmac100.c
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@ -13,6 +13,7 @@
#include <common.h>
#include <clk.h>
#include <reset.h>
#include <cpu_func.h>
#include <dm.h>
#include <log.h>
@ -91,6 +92,7 @@ struct ftgmac100_data {
u32 max_speed;
struct clk_bulk clks;
struct reset_ctl *reset_ctl;
/* End of RX/TX ring buffer bits. Depend on model */
u32 rxdes0_edorr_mask;
@ -569,6 +571,8 @@ static int ftgmac100_of_to_plat(struct udevice *dev)
priv->txdes0_edotr_mask = BIT(15);
}
priv->reset_ctl = devm_reset_control_get_optional(dev, NULL);
return clk_get_bulk(dev, &priv->clks);
}
@ -594,6 +598,12 @@ static int ftgmac100_probe(struct udevice *dev)
if (ret)
goto out;
if (priv->reset_ctl) {
ret = reset_deassert(priv->reset_ctl);
if (ret)
goto out;
}
/*
* If DM MDIO is enabled, the MDIO bus will be initialized later in
* dm_eth_phy_connect
@ -629,6 +639,8 @@ static int ftgmac100_remove(struct udevice *dev)
free(priv->phydev);
mdio_unregister(priv->bus);
mdio_free(priv->bus);
if (priv->reset_ctl)
reset_assert(priv->reset_ctl);
clk_release_bulk(&priv->clks);
return 0;