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net: stmmac: mdio: simplify MDC clock divisor lookup

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As each lookup now iterates over each table in the same way, simplfy
the code to select the table, and then walk that table.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/E1vy6A9-0000000Btwp-0lxY@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle)
2026-03-05 10:42:37 +00:00
committed by Jakub Kicinski
parent b6687ef976
commit 506f78f43c
1 changed files with 11 additions and 18 deletions
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29
drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
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@@ -535,6 +535,7 @@ static const struct stmmac_clk_rate stmmac_xgmac_csr_to_mdc[] = {
*/
static u32 stmmac_clk_csr_set(struct stmmac_priv *priv)
{
const struct stmmac_clk_rate *rates;
unsigned long clk_rate;
u32 value = ~0;
int i;
@@ -548,25 +549,17 @@ static u32 stmmac_clk_csr_set(struct stmmac_priv *priv)
* the frequency of clk_csr_i. So we do not change the default
* divider.
*/
for (i = 0; stmmac_std_csr_to_mdc[i].rate; i++)
if (clk_rate > stmmac_std_csr_to_mdc[i].rate)
rates = stmmac_std_csr_to_mdc;
if (priv->plat->flags & STMMAC_FLAG_HAS_SUN8I)
rates = stmmac_sun8i_csr_to_mdc;
if (priv->plat->core_type == DWMAC_CORE_XGMAC)
rates = stmmac_xgmac_csr_to_mdc;
for (i = 0; rates[i].rate; i++)
if (clk_rate > rates[i].rate)
break;
if (stmmac_std_csr_to_mdc[i].cr != (u8)~0)
value = stmmac_std_csr_to_mdc[i].cr;
if (priv->plat->flags & STMMAC_FLAG_HAS_SUN8I) {
for (i = 0; stmmac_sun8i_csr_to_mdc[i].rate; i++)
if (clk_rate > stmmac_sun8i_csr_to_mdc[i].rate)
break;
value = stmmac_sun8i_csr_to_mdc[i].cr;
}
if (priv->plat->core_type == DWMAC_CORE_XGMAC) {
for (i = 0; stmmac_xgmac_csr_to_mdc[i].rate; i++)
if (clk_rate > stmmac_xgmac_csr_to_mdc[i].rate)
break;
value = stmmac_xgmac_csr_to_mdc[i].cr;
}
if (rates[i].cr != (u8)~0)
value = rates[i].cr;
return value;
}