Add CLk support for sunxi_emac to enable AHB_EMAC clock via CLK framework.
Cc: Joe Hershberger joe.hershberger@ni.com Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- drivers/net/sunxi_emac.c | 28 ++++++++++++++++++++++------ 1 file changed, 22 insertions(+), 6 deletions(-)
diff --git a/drivers/net/sunxi_emac.c b/drivers/net/sunxi_emac.c index 8dbd3c50c1..4d152b0ca0 100644 --- a/drivers/net/sunxi_emac.c +++ b/drivers/net/sunxi_emac.c @@ -6,6 +6,7 @@ */
#include <common.h> +#include <clk.h> #include <dm.h> #include <linux/err.h> #include <malloc.h> @@ -157,6 +158,7 @@ struct sunxi_sramc_regs {
struct emac_eth_dev { struct emac_regs *regs; + struct clk clk; struct mii_dev *bus; struct phy_device *phydev; int link_printed; @@ -500,14 +502,12 @@ static int _sunxi_emac_eth_send(struct emac_eth_dev *priv, void *packet, return 0; }
-static void sunxi_emac_board_setup(struct emac_eth_dev *priv) +static int sunxi_emac_board_setup(struct emac_eth_dev *priv) { - struct sunxi_ccm_reg *const ccm = - (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; struct sunxi_sramc_regs *sram = (struct sunxi_sramc_regs *)SUNXI_SRAMC_BASE; struct emac_regs *regs = priv->regs; - int pin; + int pin, ret;
/* Map SRAM to EMAC */ setbits_le32(&sram->ctrl1, 0x5 << 2); @@ -517,10 +517,16 @@ static void sunxi_emac_board_setup(struct emac_eth_dev *priv) sunxi_gpio_set_cfgpin(pin, SUNXI_GPA_EMAC);
/* Set up clock gating */ - setbits_le32(&ccm->ahb_gate0, 0x1 << AHB_GATE_OFFSET_EMAC); + ret = clk_enable(&priv->clk); + if (ret) { + dev_err(dev, "failed to enable emac clock\n"); + return ret; + }
/* Set MII clock */ clrsetbits_le32(®s->mac_mcfg, 0xf << 2, 0xd << 2); + + return 0; }
static int sunxi_emac_eth_start(struct udevice *dev) @@ -557,9 +563,19 @@ static int sunxi_emac_eth_probe(struct udevice *dev) { struct eth_pdata *pdata = dev_get_platdata(dev); struct emac_eth_dev *priv = dev_get_priv(dev); + int ret;
priv->regs = (struct emac_regs *)pdata->iobase; - sunxi_emac_board_setup(priv); + + ret = clk_get_by_index(dev, 0, &priv->clk); + if (ret) { + dev_err(dev, "falied to get emac clock\n"); + return ret; + } + + ret = sunxi_emac_board_setup(priv); + if (ret) + return ret;
return sunxi_emac_init_phy(priv, dev); }