[U-Boot] [PATCH v2 1/6] net: ti: cpsw: enable 10Mbps link speed support in rgmii mode
Grygorii Strashko
grygorii.strashko at ti.com
Thu Sep 19 08:16:37 UTC 2019
According to TRMs the 10Mbps link speed is supported in RGMII only when
CPSW2G MAC SL is configured for External Control ("in band") mode
CPSW_SL_MACCTRL.EXT_EN(18) = 1.
Hence update cpsw_slave_update_link() to follow documentation.
[1] https://patchwork.kernel.org/patch/10285239/
Signed-off-by: Grygorii Strashko <grygorii.strashko at ti.com>
---
drivers/net/ti/cpsw.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ti/cpsw.c b/drivers/net/ti/cpsw.c
index 20ddb44dd8..f0d008f0f5 100644
--- a/drivers/net/ti/cpsw.c
+++ b/drivers/net/ti/cpsw.c
@@ -33,6 +33,7 @@ DECLARE_GLOBAL_DATA_PTR;
#define GIGABITEN BIT(7)
#define FULLDUPLEXEN BIT(0)
#define MIIEN BIT(15)
+#define CTL_EXT_EN BIT(18)
/* DMA Registers */
#define CPDMA_TXCONTROL 0x004
#define CPDMA_RXCONTROL 0x014
@@ -489,6 +490,8 @@ static int cpsw_slave_update_link(struct cpsw_slave *slave,
mac_control |= FULLDUPLEXEN;
if (phy->speed == 100)
mac_control |= MIIEN;
+ if (phy->speed == 10 && phy_interface_is_rgmii(phy))
+ mac_control |= CTL_EXT_EN;
}
if (mac_control == slave->mac_control)
--
2.17.1
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