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bcm53xx: backport MDIO bus clock initialization fix 

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki 2017-05-11 16:02:47 +02:00
parent 51abaf722c
commit 8adeb4e5d0
2 changed files with 96 additions and 0 deletions
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48
target/linux/bcm53xx/patches-4.4/060-0001-net-phy-Initialize-mdio-clock-at-probe-function.patch Normal file
View File

@ -0,0 +1,48 @@
From bb1a619735b4660f21bce3e728b937640024b4ad Mon Sep 17 00:00:00 2001
From: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
Date: Wed, 8 Feb 2017 17:14:26 -0500
Subject: [PATCH] net: phy: Initialize mdio clock at probe function
USB PHYs need the MDIO clock divisor enabled earlier to work.
Initialize mdio clock divisor in probe function. The ext bus
bit available in the same register will be used by mdio mux
to enable external mdio.
Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
Fixes: ddc24ae1 ("net: phy: Broadcom iProc MDIO bus driver")
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jon Mason <jon.mason@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/mdio-bcm-iproc.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/drivers/net/phy/mdio-bcm-iproc.c
+++ b/drivers/net/phy/mdio-bcm-iproc.c
@@ -81,8 +81,6 @@ static int iproc_mdio_read(struct mii_bu
if (rc)
return rc;
- iproc_mdio_config_clk(priv->base);
-
/* Prepare the read operation */
cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) |
(reg << MII_DATA_RA_SHIFT) |
@@ -112,8 +110,6 @@ static int iproc_mdio_write(struct mii_b
if (rc)
return rc;
- iproc_mdio_config_clk(priv->base);
-
/* Prepare the write operation */
cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) |
(reg << MII_DATA_RA_SHIFT) |
@@ -163,6 +159,8 @@ static int iproc_mdio_probe(struct platf
bus->read = iproc_mdio_read;
bus->write = iproc_mdio_write;
+ iproc_mdio_config_clk(priv->base);
+
rc = of_mdiobus_register(bus, pdev->dev.of_node);
if (rc) {
dev_err(&pdev->dev, "MDIO bus registration failed\n");

48
target/linux/bcm53xx/patches-4.9/060-0001-net-phy-Initialize-mdio-clock-at-probe-function.patch Normal file
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@ -0,0 +1,48 @@
From bb1a619735b4660f21bce3e728b937640024b4ad Mon Sep 17 00:00:00 2001
From: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
Date: Wed, 8 Feb 2017 17:14:26 -0500
Subject: [PATCH] net: phy: Initialize mdio clock at probe function
USB PHYs need the MDIO clock divisor enabled earlier to work.
Initialize mdio clock divisor in probe function. The ext bus
bit available in the same register will be used by mdio mux
to enable external mdio.
Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
Fixes: ddc24ae1 ("net: phy: Broadcom iProc MDIO bus driver")
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jon Mason <jon.mason@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/mdio-bcm-iproc.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/drivers/net/phy/mdio-bcm-iproc.c
+++ b/drivers/net/phy/mdio-bcm-iproc.c
@@ -81,8 +81,6 @@ static int iproc_mdio_read(struct mii_bu
if (rc)
return rc;
- iproc_mdio_config_clk(priv->base);
-
/* Prepare the read operation */
cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) |
(reg << MII_DATA_RA_SHIFT) |
@@ -112,8 +110,6 @@ static int iproc_mdio_write(struct mii_b
if (rc)
return rc;
- iproc_mdio_config_clk(priv->base);
-
/* Prepare the write operation */
cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) |
(reg << MII_DATA_RA_SHIFT) |
@@ -163,6 +159,8 @@ static int iproc_mdio_probe(struct platf
bus->read = iproc_mdio_read;
bus->write = iproc_mdio_write;
+ iproc_mdio_config_clk(priv->base);
+
rc = of_mdiobus_register(bus, pdev->dev.of_node);
if (rc) {
dev_err(&pdev->dev, "MDIO bus registration failed\n");