Optional properties:
- mac-address: 6 bytes, mac address
+- resets: Should contain a phandle to the STMMAC reset signal, if any
+- reset-names: Should contain the reset signal name "stmmaceth", if a
+ reset phandle is given
Examples:
#include <linux/pci.h>
#include "common.h"
#include <linux/ptp_clock_kernel.h>
+#include <linux/reset.h>
struct stmmac_priv {
/* Frequently used values are kept adjacent for cache effect */
int wolopts;
int wol_irq;
struct clk *stmmac_clk;
+ struct reset_control *stmmac_rst;
int clk_csr;
struct timer_list eee_ctrl_timer;
int lpi_irq;
#include <linux/net_tstamp.h>
#include "stmmac_ptp.h"
#include "stmmac.h"
+#include <linux/reset.h>
#define STMMAC_ALIGN(x) L1_CACHE_ALIGN(x)
#define JUMBO_LEN 9000
if (IS_ERR(priv->stmmac_clk)) {
dev_warn(priv->device, "%s: warning: cannot get CSR clock\n",
__func__);
+ ret = PTR_ERR(priv->stmmac_clk);
goto error_clk_get;
}
clk_prepare_enable(priv->stmmac_clk);
+ priv->stmmac_rst = devm_reset_control_get(priv->device,
+ STMMAC_RESOURCE_NAME);
+ if (IS_ERR(priv->stmmac_rst)) {
+ if (PTR_ERR(priv->stmmac_rst) == -EPROBE_DEFER) {
+ ret = -EPROBE_DEFER;
+ goto error_hw_init;
+ }
+ dev_info(priv->device, "no reset control found\n");
+ priv->stmmac_rst = NULL;
+ }
+ if (priv->stmmac_rst)
+ reset_control_deassert(priv->stmmac_rst);
+
/* Init MAC and get the capabilities */
ret = stmmac_hw_init(priv);
if (ret)
error_clk_get:
free_netdev(ndev);
- return NULL;
+ return ERR_PTR(ret);
}
/**
stmmac_mdio_unregister(ndev);
netif_carrier_off(ndev);
unregister_netdev(ndev);
+ if (priv->stmmac_rst)
+ reset_control_assert(priv->stmmac_rst);
clk_disable_unprepare(priv->stmmac_clk);
free_netdev(ndev);
stmmac_default_data();
priv = stmmac_dvr_probe(&(pdev->dev), &plat_dat, addr);
- if (!priv) {
+ if (IS_ERR(priv)) {
pr_err("%s: main driver probe failed", __func__);
- ret = -ENODEV;
+ ret = PTR_ERR(priv);
goto err_out;
}
priv->dev->irq = pdev->irq;
}
priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
- if (!priv) {
+ if (IS_ERR(priv)) {
pr_err("%s: main driver probe failed", __func__);
- return -ENODEV;
+ return PTR_ERR(priv);
}
/* Get MAC address if available (DT) */