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| author | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2021-04-19 00:19:46 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-04-19 15:58:14 -0700 |
| commit | e4cd854ec487fde631fe57049f588d2396da281c (patch) | |
| tree | ed5b8307a8ba32ca13122cdc9203a54043dbc128 | |
| parent | 10b26f0781511dc5c1b29303ee431cad08aa9944 (diff) | |
| download | linux-e4cd854ec487fde631fe57049f588d2396da281c.tar.gz linux-e4cd854ec487fde631fe57049f588d2396da281c.tar.bz2 linux-e4cd854ec487fde631fe57049f588d2396da281c.zip | |
net: korina: Get mdio input clock via common clock framework
With device tree clock is provided via CCF. For non device tree
use a maximum clock value to not overclock the PHY. The non device
tree usage will go away after platform is converted to DT.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/korina.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c index a1f53d7753ae..19f226428f89 100644 --- a/drivers/net/ethernet/korina.c +++ b/drivers/net/ethernet/korina.c @@ -57,14 +57,13 @@ #include <linux/ethtool.h> #include <linux/crc32.h> #include <linux/pgtable.h> +#include <linux/clk.h> #include <asm/bootinfo.h> #include <asm/bitops.h> #include <asm/io.h> #include <asm/dma.h> -#include <asm/mach-rc32434/rb.h> -#include <asm/mach-rc32434/rc32434.h> #include <asm/mach-rc32434/eth.h> #include <asm/mach-rc32434/dma_v.h> @@ -146,10 +145,9 @@ struct korina_private { struct work_struct restart_task; struct net_device *dev; struct device *dmadev; + int mii_clock_freq; }; -extern unsigned int idt_cpu_freq; - static dma_addr_t korina_tx_dma(struct korina_private *lp, int idx) { return lp->td_dma + (idx * sizeof(struct dma_desc)); @@ -899,8 +897,8 @@ static int korina_init(struct net_device *dev) /* Management Clock Prescaler Divisor * Clock independent setting */ - writel(((idt_cpu_freq) / MII_CLOCK + 1) & ~1, - &lp->eth_regs->ethmcp); + writel(((lp->mii_clock_freq) / MII_CLOCK + 1) & ~1, + &lp->eth_regs->ethmcp); writel(0, &lp->eth_regs->miimcfg); /* don't transmit until fifo contains 48b */ @@ -1060,6 +1058,7 @@ static int korina_probe(struct platform_device *pdev) u8 *mac_addr = dev_get_platdata(&pdev->dev); struct korina_private *lp; struct net_device *dev; + struct clk *clk; void __iomem *p; int rc; @@ -1075,6 +1074,16 @@ static int korina_probe(struct platform_device *pdev) else if (of_get_mac_address(pdev->dev.of_node, dev->dev_addr) < 0) eth_hw_addr_random(dev); + clk = devm_clk_get_optional(&pdev->dev, "mdioclk"); + if (IS_ERR(clk)) + return PTR_ERR(clk); + if (clk) { + clk_prepare_enable(clk); + lp->mii_clock_freq = clk_get_rate(clk); + } else { + lp->mii_clock_freq = 200000000; /* max possible input clk */ + } + lp->rx_irq = platform_get_irq_byname(pdev, "rx"); lp->tx_irq = platform_get_irq_byname(pdev, "tx"); |