[PATCH v5 16/20] net: stmmac: dwmac-sun8i: Prepare for second EMAC clock register
STALE2066d
From: Andre Przywara <andre.przywara@arm.com>
Date: 2021-01-27 17:34:29
Also in:
linux-arm-kernel, lkml
Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Maxime Chevallier, Linus Torvalds
Revision v5 of 7 in this series.
Revisions (7)
The Allwinner H616 SoC has two EMAC controllers, with the second one being tied to the internal PHY, but also using a separate EMAC clock register. To tell the driver about which clock register to use, we add a parameter to our syscon phandle. The driver will use this value as an index into the regmap, so that we can address more than the first register, if needed. Signed-off-by: Andre Przywara <andre.przywara@arm.com> --- drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index 58e0511badba..c7951790ed98 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c@@ -1124,11 +1124,13 @@ static int sun8i_dwmac_probe(struct platform_device *pdev) struct stmmac_resources stmmac_res; struct sunxi_priv_data *gmac; struct device *dev = &pdev->dev; + struct reg_field syscon_field; phy_interface_t interface; int ret; struct stmmac_priv *priv; struct net_device *ndev; struct regmap *regmap; + u32 syscon_idx = 0; ret = stmmac_get_platform_resources(pdev, &stmmac_res); if (ret)
@@ -1190,8 +1192,12 @@ static int sun8i_dwmac_probe(struct platform_device *pdev) return ret; } - gmac->regmap_field = devm_regmap_field_alloc(dev, regmap, - *gmac->variant->syscon_field); + syscon_field = *gmac->variant->syscon_field; + ret = of_property_read_u32_index(pdev->dev.of_node, "syscon", 1, + &syscon_idx); + if (!ret) + syscon_field.reg += syscon_idx * sizeof(u32); + gmac->regmap_field = devm_regmap_field_alloc(dev, regmap, syscon_field); if (IS_ERR(gmac->regmap_field)) { ret = PTR_ERR(gmac->regmap_field); dev_err(dev, "Unable to map syscon register: %d\n", ret);
@@ -1263,6 +1269,8 @@ static const struct of_device_id sun8i_dwmac_match[] = { .data = &emac_variant_a64 }, { .compatible = "allwinner,sun50i-h6-emac", .data = &emac_variant_h6 }, + { .compatible = "allwinner,sun50i-h616-emac", + .data = &emac_variant_h6 }, { } }; MODULE_DEVICE_TABLE(of, sun8i_dwmac_match);
--
2.17.5