Commit 32e577bc authored by Biao Huang's avatar Biao Huang Committed by Greg Kroah-Hartman

net: stmmac: fix csr_clk can't be zero issue

[ Upstream commit 5e7f7fc5 ]

The specific clk_csr value can be zero, and
stmmac_clk is necessary for MDC clock which can be set dynamically.
So, change the condition from plat->clk_csr to plat->stmmac_clk to
fix clk_csr can't be zero issue.

Fixes: cd7201f4 ("stmmac: MDC clock dynamically based on the csr clock input")
Signed-off-by: default avatarBiao Huang <biao.huang@mediatek.com>
Acked-by: default avatarAlexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 88bf99a6
......@@ -4380,10 +4380,10 @@ int stmmac_dvr_probe(struct device *device,
* set the MDC clock dynamically according to the csr actual
* clock input.
*/
if (!priv->plat->clk_csr)
stmmac_clk_csr_set(priv);
else
if (priv->plat->clk_csr >= 0)
priv->clk_csr = priv->plat->clk_csr;
else
stmmac_clk_csr_set(priv);
stmmac_check_pcs_mode(priv);
......
......@@ -408,7 +408,10 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
/* Default to phy auto-detection */
plat->phy_addr = -1;
/* Get clk_csr from device tree */
/* Default to get clk_csr from stmmac_clk_crs_set(),
* or get clk_csr from device tree.
*/
plat->clk_csr = -1;
of_property_read_u32(np, "clk_csr", &plat->clk_csr);
/* "snps,phy-addr" is not a standard property. Mark it as deprecated
......
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