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stmmac: CSR clock configuration fix 

When testing stmmac with my QoS reference design I checked a problem in the
CSR clock configuration that was impossibilitating the phy discovery, since
every read operation returned 0x0000ffff. This patch fixes the issue.

Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
jpinto 2016-12-23 10:15:59 +00:00 committed by David S. Miller
parent 2e3d5fa44f
commit 567be78659
3 changed files with 6 additions and 6 deletions
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2
drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
View File

@ -539,7 +539,7 @@ struct mac_device_info *dwmac1000_setup(void __iomem *ioaddr, int mcbins,
mac->mii.reg_shift = 6;
mac->mii.reg_mask = 0x000007C0;
mac->mii.clk_csr_shift = 2;
mac->mii.clk_csr_mask = 0xF;
mac->mii.clk_csr_mask = GENMASK(5, 2);
/* Get and dump the chip ID */
*synopsys_id = stmmac_get_synopsys_id(hwid);

2
drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c
View File

@ -197,7 +197,7 @@ struct mac_device_info *dwmac100_setup(void __iomem *ioaddr, int *synopsys_id)
mac->mii.reg_shift = 6;
mac->mii.reg_mask = 0x000007C0;
mac->mii.clk_csr_shift = 2;
mac->mii.clk_csr_mask = 0xF;
mac->mii.clk_csr_mask = GENMASK(5, 2);
/* Synopsys Id is not available on old chips */
*synopsys_id = 0;

8
drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
View File

@ -81,8 +81,8 @@ static int stmmac_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg)
value |= (phyaddr << priv->hw->mii.addr_shift)
& priv->hw->mii.addr_mask;
value |= (phyreg << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
value |= (priv->clk_csr & priv->hw->mii.clk_csr_mask)
<< priv->hw->mii.clk_csr_shift;
value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
& priv->hw->mii.clk_csr_mask;
if (priv->plat->has_gmac4)
value |= MII_GMAC4_READ;
@ -122,8 +122,8 @@ static int stmmac_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg,
& priv->hw->mii.addr_mask;
value |= (phyreg << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
value |= ((priv->clk_csr & priv->hw->mii.clk_csr_mask)
<< priv->hw->mii.clk_csr_shift);
value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
& priv->hw->mii.clk_csr_mask;
if (priv->plat->has_gmac4)
value |= MII_GMAC4_WRITE;