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Subject[RFC Patch net-next 01/10] net: dsa: microchip: lan937x: read rgmii delay from device tree
Date
This patch read the rgmii tx and rx delay from device tree and stored it
in the ksz_port.

Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
---
drivers/net/dsa/microchip/ksz_common.c | 16 ++++++++++++++++
drivers/net/dsa/microchip/ksz_common.h | 2 ++
2 files changed, 18 insertions(+)

diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 28d7cb2ce98f..4bc6277b4361 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -1499,6 +1499,7 @@ int ksz_switch_register(struct ksz_device *dev)
struct device_node *port, *ports;
phy_interface_t interface;
unsigned int port_num;
+ u32 *value;
int ret;
int i;

@@ -1589,6 +1590,21 @@ int ksz_switch_register(struct ksz_device *dev)
}
of_get_phy_mode(port,
&dev->ports[port_num].interface);
+
+ if (!dev->info->supports_rgmii[port_num])
+ continue;
+
+ value = &dev->ports[port_num].rgmii_rx_val;
+ if (of_property_read_u32(port,
+ "rx-internal-delay-ps",
+ value))
+ *value = 0;
+
+ value = &dev->ports[port_num].rgmii_tx_val;
+ if (of_property_read_u32(port,
+ "tx-internal-delay-ps",
+ value))
+ *value = 0;
}
dev->synclko_125 = of_property_read_bool(dev->dev->of_node,
"microchip,synclko-125");
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index d5dddb7ec045..41fe6388af9e 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -77,6 +77,8 @@ struct ksz_port {
struct ksz_port_mib mib;
phy_interface_t interface;
u16 max_frame;
+ u32 rgmii_tx_val;
+ u32 rgmii_rx_val;
};

struct ksz_device {
--
2.36.1
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