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    Subject[PATCH v5 net-next 08/10] net: korina: Get mdio input clock via common clock framework
    Date
    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>
    ---
    drivers/net/ethernet/korina.c | 21 +++++++++++++++------
    1 file changed, 15 insertions(+), 6 deletions(-)

    diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c
    index cd078a5c679b..e95c8d87d893 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;

    @@ -1077,6 +1076,16 @@ static int korina_probe(struct platform_device *pdev)
    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, "korina_rx");
    lp->tx_irq = platform_get_irq_byname(pdev, "korina_tx");

    --
    2.29.2
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