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 joe.hershberger@ni.com Cc: Lothar Felten lothar.felten@gmail.com Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- 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 3ba3a1ff8b..5ee4c2f993 100644 --- a/drivers/net/sun8i_emac.c +++ b/drivers/net/sun8i_emac.c @@ -278,10 +278,18 @@ static int sun8i_emac_set_syscon(struct emac_eth_dev *priv) 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, ®); @@ -647,13 +655,6 @@ 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)); @@ -834,25 +835,23 @@ 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;