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net: dwc_eth_qos: Flush the RX descriptors on init

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Currently the code only flushes the first RX descriptor, not every entry
in the RX descriptor ring. Fix this, to make sure the DMA engine can pick
the RX descriptors correctly.

Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: Ramon Fried <rfried.dev@gmail.com>
Cc: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Marek Vasut 2020-03-23 02:09:01 +01:00 committed by marex
parent 83858d8795
commit dd90c2e1ea
1 changed files with 1 additions and 1 deletions
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2
drivers/net/dwc_eth_qos.c
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@ -1289,8 +1289,8 @@ static int eqos_start(struct udevice *dev)
rx_desc->des0 = (u32)(ulong)(eqos->rx_dma_buf +
(i * EQOS_MAX_PACKET_SIZE));
rx_desc->des3 = EQOS_DESC3_OWN | EQOS_DESC3_BUF1V;
eqos->config->ops->eqos_flush_desc(rx_desc);
}
eqos->config->ops->eqos_flush_desc(eqos->descs);
writel(0, &eqos->dma_regs->ch0_txdesc_list_haddress);
writel((ulong)eqos->tx_descs, &eqos->dma_regs->ch0_txdesc_list_address);