From 695f6043c9d84df6feeaca46661123c9f570397d Mon Sep 17 00:00:00 2001 From: Jagan Teki Date: Thu, 28 Feb 2019 00:26:51 +0530 Subject: [PATCH] net: sun8i_emac: Retrieve GMAC clock via 'syscon' phandle Unlike other Allwinner SoC's R40 GMAC clock control register is locate in CCU, but rest located via syscon itself. Since the phandle property for current code look for 'syscon' and it will grab the respective ccu or syscon base address based on DT property defined in respective SoC dtsi. So, use the existing 'syscon' code even for R40 for retrieving GMAC clock via CCU and update the register directly in sun8i_emac_set_syscon instead of writing it separately using ccm base. Cc: Joe Hershberger Cc: Lothar Felten Signed-off-by: Jagan Teki --- drivers/net/sun8i_emac.c | 55 ++++++++++++++++++++-------------------- 1 file changed, 27 insertions(+), 28 deletions(-) diff --git a/drivers/net/sun8i_emac.c b/drivers/net/sun8i_emac.c index c9798445c7..a7fb7ac405 100644 --- a/drivers/net/sun8i_emac.c +++ b/drivers/net/sun8i_emac.c @@ -285,10 +285,18 @@ static int sun8i_emac_set_syscon(struct sun8i_eth_pdata *pdata, int ret; u32 reg; - reg = readl(priv->sysctl_reg + 0x30); + if (priv->variant == R40_GMAC) { + /* Select RGMII for R40 */ + reg = readl(priv->sysctl_reg + 0x164); + reg |= CCM_GMAC_CTRL_TX_CLK_SRC_INT_RGMII | + CCM_GMAC_CTRL_GPIT_RGMII | + CCM_GMAC_CTRL_TX_CLK_DELAY(CONFIG_GMAC_TX_DELAY); - if (priv->variant == R40_GMAC) + writel(reg, priv->sysctl_reg + 0x164); return 0; + } + + reg = readl(priv->sysctl_reg + 0x30); if (priv->variant == H3_EMAC) { ret = sun8i_emac_set_syscon_ephy(priv, ®); @@ -662,13 +670,6 @@ static void sun8i_emac_board_setup(struct emac_eth_dev *priv) /* De-assert EMAC */ setbits_le32(&ccm->ahb_gate1, BIT(AHB_GATE_OFFSET_GMAC)); - - /* Select RGMII for R40 */ - setbits_le32(&ccm->gmac_clk_cfg, - CCM_GMAC_CTRL_TX_CLK_SRC_INT_RGMII | - CCM_GMAC_CTRL_GPIT_RGMII); - setbits_le32(&ccm->gmac_clk_cfg, - CCM_GMAC_CTRL_TX_CLK_DELAY(CONFIG_GMAC_TX_DELAY)); } else { /* Set clock gating for emac */ setbits_le32(&ccm->ahb_gate0, BIT(AHB_GATE_OFFSET_GMAC)); @@ -850,25 +851,23 @@ static int sun8i_emac_eth_ofdata_to_platdata(struct udevice *dev) return -EINVAL; } - if (priv->variant != R40_GMAC) { - offset = fdtdec_lookup_phandle(gd->fdt_blob, node, "syscon"); - if (offset < 0) { - debug("%s: cannot find syscon node\n", __func__); - return -EINVAL; - } - reg = fdt_getprop(gd->fdt_blob, offset, "reg", NULL); - if (!reg) { - debug("%s: cannot find reg property in syscon node\n", - __func__); - return -EINVAL; - } - priv->sysctl_reg = fdt_translate_address((void *)gd->fdt_blob, - offset, reg); - if (priv->sysctl_reg == FDT_ADDR_T_NONE) { - debug("%s: Cannot find syscon base address\n", - __func__); - return -EINVAL; - } + offset = fdtdec_lookup_phandle(gd->fdt_blob, node, "syscon"); + if (offset < 0) { + debug("%s: cannot find syscon node\n", __func__); + return -EINVAL; + } + + reg = fdt_getprop(gd->fdt_blob, offset, "reg", NULL); + if (!reg) { + debug("%s: cannot find reg property in syscon node\n", + __func__); + return -EINVAL; + } + priv->sysctl_reg = fdt_translate_address((void *)gd->fdt_blob, + offset, reg); + if (priv->sysctl_reg == FDT_ADDR_T_NONE) { + debug("%s: Cannot find syscon base address\n", __func__); + return -EINVAL; } pdata->phy_interface = -1;