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net: stmmac: qcom-ethqos: use rgmii_clock() to set the link clock

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The link clock operates at twice the RGMII clock rate. Therefore, we
can use the rgmii_clock() helper to set this clock rate.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/E1tlRMK-004Vsx-Ss@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle)
2025-02-21 11:38:20 +00:00
committed by Jakub Kicinski
parent e13b6da704
commit 98f9928843
1 changed files with 5 additions and 18 deletions
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23
drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
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@@ -169,30 +169,17 @@ static void rgmii_dump(void *priv)
rgmii_readl(ethqos, EMAC_SYSTEM_LOW_POWER_DEBUG));
}
/* Clock rates */
#define RGMII_1000_NOM_CLK_FREQ (250 * 1000 * 1000UL)
#define RGMII_ID_MODE_100_LOW_SVS_CLK_FREQ (50 * 1000 * 1000UL)
#define RGMII_ID_MODE_10_LOW_SVS_CLK_FREQ (5 * 1000 * 1000UL)
static void
ethqos_update_link_clk(struct qcom_ethqos *ethqos, int speed)
{
long rate;
if (!phy_interface_mode_is_rgmii(ethqos->phy_mode))
return;
switch (speed) {
case SPEED_1000:
ethqos->link_clk_rate = RGMII_1000_NOM_CLK_FREQ;
break;
case SPEED_100:
ethqos->link_clk_rate = RGMII_ID_MODE_100_LOW_SVS_CLK_FREQ;
break;
case SPEED_10:
ethqos->link_clk_rate = RGMII_ID_MODE_10_LOW_SVS_CLK_FREQ;
break;
}
rate = rgmii_clock(speed);
if (rate > 0)
ethqos->link_clk_rate = rate * 2;
clk_set_rate(ethqos->link_clk, ethqos->link_clk_rate);
}