diff options
| author |   Wolfram Sang <w.sang@pengutronix.de> | 2013-01-29 15:46:11 +0100 |
|---|---|---|
| committer |   Shawn Guo <shawn.guo@linaro.org> | 2013-04-04 21:22:40 +0800 |
| commit | daa7d392ffe67e698ee442694276061624b4b0a1 (patch) | |
| tree | de6e3cba8d79fcc55ae6cdc294c1a29e5742d141 /drivers/net/ethernet/freescale | |
| parent | net: fec: handle optional clk_ptp more gracefully (diff) | |
| download | linux-dev-daa7d392ffe67e698ee442694276061624b4b0a1.tar.xz linux-dev-daa7d392ffe67e698ee442694276061624b4b0a1.zip | |
net: freescale: fec: add support for optional enet_out clk
Some MX28 boards need the internal enet_out clock to be enabled. So, do
this in the driver iff the clock was referenced via devicetree.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale')
| -rw-r--r-- | drivers/net/ethernet/freescale/fec.c | 10 | ||||
| -rw-r--r-- | drivers/net/ethernet/freescale/fec.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c index 6d965bb32908..dd098ea44d48 100644 --- a/drivers/net/ethernet/freescale/fec.c +++ b/drivers/net/ethernet/freescale/fec.c @@ -1802,6 +1802,11 @@ fec_probe(struct platform_device *pdev) goto failed_clk; } + /* enet_out is optional, depends on board */ + fep->clk_enet_out = devm_clk_get(&pdev->dev, "enet_out"); + if (IS_ERR(fep->clk_enet_out)) + fep->clk_enet_out = NULL; + fep->clk_ptp = devm_clk_get(&pdev->dev, "ptp"); fep->bufdesc_ex = pdev->id_entry->driver_data & FEC_QUIRK_HAS_BUFDESC_EX; @@ -1812,6 +1817,7 @@ fec_probe(struct platform_device *pdev) clk_prepare_enable(fep->clk_ahb); clk_prepare_enable(fep->clk_ipg); + clk_prepare_enable(fep->clk_enet_out); clk_prepare_enable(fep->clk_ptp); reg_phy = devm_regulator_get(&pdev->dev, "phy"); @@ -1877,6 +1883,7 @@ failed_irq: failed_regulator: clk_disable_unprepare(fep->clk_ahb); clk_disable_unprepare(fep->clk_ipg); + clk_disable_unprepare(fep->clk_enet_out); clk_disable_unprepare(fep->clk_ptp); failed_pin: failed_clk: @@ -1903,6 +1910,7 @@ fec_drv_remove(struct platform_device *pdev) clk_disable_unprepare(fep->clk_ptp); if (fep->ptp_clock) ptp_clock_unregister(fep->ptp_clock); + clk_disable_unprepare(fep->clk_enet_out); clk_disable_unprepare(fep->clk_ahb); clk_disable_unprepare(fep->clk_ipg); for (i = 0; i < FEC_IRQ_NUM; i++) { @@ -1933,6 +1941,7 @@ fec_suspend(struct device *dev) fec_stop(ndev); netif_device_detach(ndev); } + clk_disable_unprepare(fep->clk_enet_out); clk_disable_unprepare(fep->clk_ahb); clk_disable_unprepare(fep->clk_ipg); @@ -1945,6 +1954,7 @@ fec_resume(struct device *dev) struct net_device *ndev = dev_get_drvdata(dev); struct fec_enet_private *fep = netdev_priv(ndev); + clk_prepare_enable(fep->clk_enet_out); clk_prepare_enable(fep->clk_ahb); clk_prepare_enable(fep->clk_ipg); if (netif_running(ndev)) { diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index eb4372962839..feabcb6a78b4 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -207,6 +207,7 @@ struct fec_enet_private { struct clk *clk_ipg; struct clk *clk_ahb; + struct clk *clk_enet_out; struct clk *clk_ptp; /* The saved address of a sent-in-place packet/buffer, for skfree(). */ |