On Wed, Oct 26, 2016 at 02:50:39PM -0700, Florian Fainelli wrote: > On 10/26/2016 12:36 PM, Jon Mason wrote: > > Add support for the variant of amac hardware present in the Broadcom > > Northstar2 based SoCs. Northstar2 requires an additional register to be > > configured with the port speed/duplexity (NICPM). This can be added to > > the link callback to hide it from the instances that do not use this. > > Also, the bgmac_chip_reset() was intentionally removed to prevent the > > resetting of the chip to the default values on open. Finally, clearing > > of the pending interrupts on init is required due to observed issues on > > some platforms. > > > > Signed-off-by: Jon Mason <jon.mason@xxxxxxxxxxxx> > > --- > > > +static void bgmac_nicpm_speed_set(struct net_device *net_dev) > > +{ > > + struct bgmac *bgmac = netdev_priv(net_dev); > > + u32 val; > > + > > + if (!bgmac->plat.nicpm_base) > > + return; > > + > > + val = NICPM_IOMUX_CTRL_INIT_VAL; > > + switch (bgmac->net_dev->phydev->speed) { > > + default: > > + pr_err("Unsupported speed. Defaulting to 1000Mb\n"); > > + case SPEED_1000: > > + val |= NICPM_IOMUX_CTRL_SPD_1000M << NICPM_IOMUX_CTRL_SPD_SHIFT; > > + break; > > + case SPEED_100: > > + val |= NICPM_IOMUX_CTRL_SPD_100M << NICPM_IOMUX_CTRL_SPD_SHIFT; > > + break; > > + case SPEED_10: > > + val |= NICPM_IOMUX_CTRL_SPD_10M << NICPM_IOMUX_CTRL_SPD_SHIFT; > > + break; > > + } > > + > > + writel(val, bgmac->plat.nicpm_base + NICPM_IOMUX_CTRL); > > + > > + usleep_range(10, 100); > > Does not seem like a good idea, do you need that sleep? Oops, that's not supposed to be there. Removed. > > + > > + bgmac_adjust_link(bgmac->net_dev); > > +} > > + > > static int platform_phy_connect(struct bgmac *bgmac) > > { > > struct phy_device *phy_dev; > > > > - phy_dev = of_phy_get_and_connect(bgmac->net_dev, bgmac->dev->of_node, > > - bgmac_adjust_link); > > + if (bgmac->plat.nicpm_base) > > + phy_dev = of_phy_get_and_connect(bgmac->net_dev, > > + bgmac->dev->of_node, > > + bgmac_nicpm_speed_set); > > + else > > + phy_dev = of_phy_get_and_connect(bgmac->net_dev, > > + bgmac->dev->of_node, > > + bgmac_adjust_link); > > if (!phy_dev) { > > dev_err(bgmac->dev, "Phy connect failed\n"); > > return -ENODEV; > > } > > > > + if (bgmac->feature_flags & BGMAC_FEAT_LANE_SWAP) > > + phy_dev->dev_flags |= PHY_BRCM_EXP_LANE_SWAP; > > + > > return 0; > > } > > > > @@ -140,6 +188,9 @@ static int bgmac_probe(struct platform_device *pdev) > > > > platform_set_drvdata(pdev, bgmac); > > > > + if (of_property_read_bool(np, "brcm,enet-phy-lane-swap")) > > + bgmac->feature_flags |= BGMAC_FEAT_LANE_SWAP; > > + > > /* Set the features of the 4707 family */ > > bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST; > > bgmac->feature_flags |= BGMAC_FEAT_NO_RESET; > > @@ -182,6 +233,14 @@ static int bgmac_probe(struct platform_device *pdev) > > if (IS_ERR(bgmac->plat.idm_base)) > > return PTR_ERR(bgmac->plat.idm_base); > > > > + regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nicpm_base"); > > + if (regs) { > > + bgmac->plat.nicpm_base = devm_ioremap_resource(&pdev->dev, > > + regs); > > + if (IS_ERR(bgmac->plat.nicpm_base)) > > + return PTR_ERR(bgmac->plat.nicpm_base); > > + } > > + > > bgmac->read = platform_bgmac_read; > > bgmac->write = platform_bgmac_write; > > bgmac->idm_read = platform_bgmac_idm_read; > > @@ -213,6 +272,7 @@ static int bgmac_remove(struct platform_device *pdev) > > static const struct of_device_id bgmac_of_enet_match[] = { > > {.compatible = "brcm,amac",}, > > {.compatible = "brcm,nsp-amac",}, > > + {.compatible = "brcm,ns2-amac",}, > > {}, > > }; > > > > diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c > > index 38876ec..1796208 100644 > > --- a/drivers/net/ethernet/broadcom/bgmac.c > > +++ b/drivers/net/ethernet/broadcom/bgmac.c > > @@ -1082,6 +1082,9 @@ static void bgmac_enable(struct bgmac *bgmac) > > /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipinit */ > > static void bgmac_chip_init(struct bgmac *bgmac) > > { > > + /* Clear any erroneously pending interrupts */ > > + bgmac_write(bgmac, BGMAC_INT_STATUS, ~0); > > + > > /* 1 interrupt per received frame */ > > bgmac_write(bgmac, BGMAC_INT_RECV_LAZY, 1 << BGMAC_IRL_FC_SHIFT); > > > > @@ -1158,8 +1161,6 @@ static int bgmac_open(struct net_device *net_dev) > > struct bgmac *bgmac = netdev_priv(net_dev); > > int err = 0; > > > > - bgmac_chip_reset(bgmac); > > - > > Is this removal intentional? Maybe it should be special cased with > checking for a NS2 BGMAC instance and not do it in that case? The reset seems completely unnecessary. There is already 2 resets in the probe routine, another reset serves no purpose. I can add it back, as it does not seem to have the negative effect I was seeing before. Of course, if I remove this one I should remove the reset in the close too (which seems even more unnecessary, but I didn't remove it). Thanks, Jon > -- > Florian -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html