[RFC PATCH net-next v4 22/28] net: dsa: qca8k: enlarge mdio delay and timeout

Ansuel Smith
2021-05-08T00:31:20Z

The witch require some extra delay after setting page or the next
read/write can use still use the old page. Add a delay after the
set_page function to address this as it's done in QSDK legacy driver.
Some timeouts were notice with VLAN and phy function, enlarge the
mdio busy wait timeout to fix these problems.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
---
drivers/net/dsa/qca8k.c | 1 +
drivers/net/dsa/qca8k.h | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c
index e272ccaaa7f6..f96579c0bd46 100644
--- a/drivers/net/dsa/qca8k.c
+++ b/drivers/net/dsa/qca8k.c
@@ -143,6 +143,7 @@ qca8k_set_page(struct mii_bus *bus, u16 page)
}

qca8k_current_page = page;
+ usleep_range(1000, 2000);
return 0;
}

diff --git a/drivers/net/dsa/qca8k.h b/drivers/net/dsa/qca8k.h
index a878486d9bcd..d365f85ab34f 100644
--- a/drivers/net/dsa/qca8k.h
+++ b/drivers/net/dsa/qca8k.h
@@ -20,7 +20,7 @@
#define PHY_ID_QCA8337 0x004dd036
#define QCA8K_ID_QCA8337 0x13

-#define QCA8K_BUSY_WAIT_TIMEOUT 20
+#define QCA8K_BUSY_WAIT_TIMEOUT 2000

#define QCA8K_NUM_FDB_RECORDS 2048

--
2.30.2