When using rgmii Gigabit mode, the wait_for_bit_le32() reset method resulting in RX can not receive data, after this patch, works well.
Signed-off-by: David Wu david.wu@rock-chips.com ---
drivers/net/dwc_eth_qos.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/drivers/net/dwc_eth_qos.c b/drivers/net/dwc_eth_qos.c index a72132cacf..16988f6bdc 100644 --- a/drivers/net/dwc_eth_qos.c +++ b/drivers/net/dwc_eth_qos.c @@ -1034,7 +1034,7 @@ static int eqos_write_hwaddr(struct udevice *dev) static int eqos_start(struct udevice *dev) { struct eqos_priv *eqos = dev_get_priv(dev); - int ret, i; + int ret, i, limit; ulong rate; u32 val, tx_fifo_sz, rx_fifo_sz, tqs, rqs, pbl; ulong last_rx_desc; @@ -1060,12 +1060,21 @@ static int eqos_start(struct udevice *dev)
eqos->reg_access_ok = true;
- ret = wait_for_bit_le32(&eqos->dma_regs->mode, - EQOS_DMA_MODE_SWR, false, - eqos->config->swr_wait, false); - if (ret) { + /* DMA SW reset */ + val = readl(&eqos->dma_regs->mode); + val |= EQOS_DMA_MODE_SWR; + writel(val, &eqos->dma_regs->mode); + limit = eqos->config->swr_wait / 10; + while (limit--) { + if (!(readl(&eqos->dma_regs->mode) & EQOS_DMA_MODE_SWR)) + break; + mdelay(10000); + } + + if (limit < 0) { pr_err("EQOS_DMA_MODE_SWR stuck"); - goto err_stop_resets; + goto err_stop_clks; + return -ETIMEDOUT; }
ret = eqos->config->ops->eqos_calibrate_pads(dev);