From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jagan Teki Date: Thu, 28 Feb 2019 00:26:50 +0530 Subject: [U-Boot] [PATCH v3 02/13] net: sunxi_emac: Add CLK support In-Reply-To: <20190227185701.15545-1-jagan@amarulasolutions.com> References: <20190227185701.15545-1-jagan@amarulasolutions.com> Message-ID: <20190227185701.15545-3-jagan@amarulasolutions.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Add CLk support for sunxi_emac to enable AHB_EMAC clock via CLK framework. Cc: Joe Hershberger Signed-off-by: Jagan Teki --- 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..9a5f7fd3c7 100644 --- a/drivers/net/sunxi_emac.c +++ b/drivers/net/sunxi_emac.c @@ -6,6 +6,7 @@ */ #include +#include #include #include #include @@ -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); } -- 2.18.0.321.gffc6fa0e3