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| author | Jagan Teki <jagan@amarulasolutions.com> | 2019-02-28 00:26:50 +0530 |
|---|---|---|
| committer | Jagan Teki <jagan@amarulasolutions.com> | 2019-04-16 16:29:00 +0530 |
| commit | 0ed8eaf1de2074c40d9a2d4d3d829fd6acee1597 (patch) | |
| tree | ba31ec750df784b5003ea3c912926e04b8da0676 /drivers | |
| parent | 33685372cf7dc8687c15e426b3a11281d4efce47 (diff) | |
| download | u-boot-0ed8eaf1de2074c40d9a2d4d3d829fd6acee1597.zip u-boot-0ed8eaf1de2074c40d9a2d4d3d829fd6acee1597.tar.gz u-boot-0ed8eaf1de2074c40d9a2d4d3d829fd6acee1597.tar.bz2 | |
net: sunxi_emac: Add CLK support
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>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/sunxi_emac.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/drivers/net/sunxi_emac.c b/drivers/net/sunxi_emac.c index 8dbd3c5..9a5f7fd 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, "failed to get emac clock\n"); + return ret; + } + + ret = sunxi_emac_board_setup(priv); + if (ret) + return ret; return sunxi_emac_init_phy(priv, dev); } |