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@xxxxxxxxxxxxxxx>
---
.../stmicro/stmmac/dwmac-qcom-ethqos.c | 23 ++++---------------
1 file changed, 5 insertions(+), 18 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index 192f270197c8..eafe637540b6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -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);
}
--
2.30.2
