lkml.org 
[lkml]   [2019]   [Apr]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3/7] net: stmmac: dma channel control register need to be init first
Date
stmmac_init_chan() needs to be called before stmmac_init_rx_chan() and
stmmac_init_tx_chan(). This is because if PBLx8 is to be used,
"DMA_CH(#i)_Control.PBLx8" needs to be set before programming
"DMA_CH(#i)_TX_Control.TxPBL" and "DMA_CH(#i)_RX_Control.RxPBL".

Reviewed-by: Zhang, Baoli <baoli.zhang@intel.com>
Signed-off-by: Weifeng Voon <weifeng.voon@intel.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index a26e36d..ec031e3 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2208,6 +2208,10 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv)
if (priv->plat->axi)
stmmac_axi(priv, priv->ioaddr, priv->plat->axi);

+ /* DMA CSR Channel configuration */
+ for (chan = 0; chan < dma_csr_ch; chan++)
+ stmmac_init_chan(priv, priv->ioaddr, priv->plat->dma_cfg, chan);
+
/* DMA RX Channel Configuration */
for (chan = 0; chan < rx_channels_count; chan++) {
rx_q = &priv->rx_queue[chan];
@@ -2233,10 +2237,6 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv)
tx_q->tx_tail_addr, chan);
}

- /* DMA CSR Channel configuration */
- for (chan = 0; chan < dma_csr_ch; chan++)
- stmmac_init_chan(priv, priv->ioaddr, priv->plat->dma_cfg, chan);
-
return ret;
}

--
1.9.1
\
 
 \ /
  Last update: 2019-04-24 11:17    [W:0.193 / U:4.508 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site