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authorJisheng Zhang <jszhang@marvell.com>2016-01-20 11:27:24 (GMT)
committerDavid S. Miller <davem@davemloft.net>2016-01-21 20:04:59 (GMT)
commit15cc4a4a99ebfbbb696e85dca30680b522811a44 (patch)
tree5b76dfbc514214a783ebd1ce36dcd716c0299412 /drivers/net/ethernet/marvell
parent2804ba4edef5b4de01d4c580eb9ab4000f822a53 (diff)
downloadlinux-15cc4a4a99ebfbbb696e85dca30680b522811a44.tar.xz
net: mvneta: get optional bus clk
Some platforms may provide more than one clk for the mvneta IP, for example Marvell BG4CT provides one clk for the mac core, and one clk for the AXI bus logic. Obviously this bus clk also need to be enabled. This patch adds this optional "bus" clk support. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell')
-rw-r--r--drivers/net/ethernet/marvell/mvneta.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 4067055..662c2ee 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -373,6 +373,8 @@ struct mvneta_port {
/* Core clock */
struct clk *clk;
+ /* AXI clock */
+ struct clk *clk_bus;
u8 mcast_count[256];
u16 tx_ring_size;
u16 rx_ring_size;
@@ -3614,6 +3616,10 @@ static int mvneta_probe(struct platform_device *pdev)
clk_prepare_enable(pp->clk);
+ pp->clk_bus = devm_clk_get(&pdev->dev, "bus");
+ if (!IS_ERR(pp->clk_bus))
+ clk_prepare_enable(pp->clk_bus);
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pp->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(pp->base)) {
@@ -3725,6 +3731,7 @@ err_free_stats:
err_free_ports:
free_percpu(pp->ports);
err_clk:
+ clk_disable_unprepare(pp->clk_bus);
clk_disable_unprepare(pp->clk);
err_put_phy_node:
of_node_put(phy_node);
@@ -3742,6 +3749,7 @@ static int mvneta_remove(struct platform_device *pdev)
struct mvneta_port *pp = netdev_priv(dev);
unregister_netdev(dev);
+ clk_disable_unprepare(pp->clk_bus);
clk_disable_unprepare(pp->clk);
free_percpu(pp->ports);
free_percpu(pp->stats);