[PATCH net-next v2 08/15] net: stmmac: qcom-ethqos: move 100M/10M speed programming
From: Russell King (Oracle) <hidden>
Date: 2026-03-27 08:44:15
Also in:
linux-arm-kernel, linux-arm-msm
Subsystem:
networking drivers, qualcomm ethqos ethernet driver, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Mohd Ayaan Anwar, Linus Torvalds
Move the speed programming for 100M and 10M out of the switch. There is no programming done for 1G speed. It looks like there are two fields, 7:6 which are programemd to '1' to select a /2 divisor for 100M, and bits 16:8 which are programmed to '19' to select a /20 divisor. Signed-off-by: Russell King (Oracle) <redacted> --- .../ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index ab6554f58214..2751def922df 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c@@ -425,6 +425,15 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos, int speed) rgmii_updatel(ethqos, RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN, phase_shift, RGMII_IO_MACRO_CONFIG2); + if (speed == SPEED_100) + rgmii_updatel(ethqos, RGMII_CONFIG_MAX_SPD_PRG_2, + FIELD_PREP(RGMII_CONFIG_MAX_SPD_PRG_2, 1), + RGMII_IO_MACRO_CONFIG); + else if (speed == SPEED_10) + rgmii_updatel(ethqos, RGMII_CONFIG_MAX_SPD_PRG_9, + FIELD_PREP(RGMII_CONFIG_MAX_SPD_PRG_9, 19), + RGMII_IO_MACRO_CONFIG); + switch (speed) { case SPEED_1000: rgmii_clrmask(ethqos, RGMII_CONFIG2_RSVD_CONFIG15,
@@ -453,9 +462,6 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos, int speed) break; case SPEED_100: - rgmii_updatel(ethqos, RGMII_CONFIG_MAX_SPD_PRG_2, - FIELD_PREP(RGMII_CONFIG_MAX_SPD_PRG_2, 1), - RGMII_IO_MACRO_CONFIG); rgmii_clrmask(ethqos, RGMII_CONFIG2_RSVD_CONFIG15, RGMII_IO_MACRO_CONFIG2);
@@ -479,9 +485,6 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos, int speed) break; case SPEED_10: - rgmii_updatel(ethqos, RGMII_CONFIG_MAX_SPD_PRG_9, - FIELD_PREP(RGMII_CONFIG_MAX_SPD_PRG_9, 19), - RGMII_IO_MACRO_CONFIG); rgmii_clrmask(ethqos, RGMII_CONFIG2_RSVD_CONFIG15, RGMII_IO_MACRO_CONFIG2); if (ethqos->has_emac_ge_3)
--
2.47.3