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authorMichael Pratt <mcpratt@pm.me>2021-05-30 02:02:47 -0400
committerChuanhong Guo <gch981213@gmail.com>2021-06-23 14:22:18 +0800
commit6972e498d33ec896c676b7af91e3bfb00aa846a1 (patch)
tree87d64f51431260d109ab9641a99e9bf4dd97bb65 /target/linux/ramips/files/drivers/net
parent0976b6c4262a11a8d0dab9aeb64f5cdee266c44a (diff)
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ramips: mt7620: move mt7620_mdio_mode() to ethernet driver
The function mt7620_mdio_mode is only called once and both the function and mdio_mode block have been named incorrectly, leading to confusion and useless commits. These lines in the mdio_mode block of mt7620_hw_init are only intended for boards with an external mt7530 switch. (see commit 194ca6127ee18cd3a95da4d03f02e43b5428c0bb) Therefore, move lines from mdio_mode to the place in soc_mt7620.c where the type of mt7530 switch is identified, and move lines from mt7620_mdio_mode to a main function. mt7620_mdio_mode was called from mt7620_gsw_init where the priv struct is available, so the lines must stay in mt7620_gsw_init function. In order to keep things as simple as possible, keep the DTS property related function calls together, by moving them from mt7620_gsw_probe to init. Remove the now useless DTS properties and extra phy nodes. Fixes: 5a6229a93df8 ("ramips: remove superfluous & confusing DT binding") Fixes: b85fe43ec8c4 ("ramips: mt7620: add force use of mdio-mode") Signed-off-by: Michael Pratt <mcpratt@pm.me>
Diffstat (limited to 'target/linux/ramips/files/drivers/net')
-rw-r--r--target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c71
-rw-r--r--target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c15
2 files changed, 37 insertions, 49 deletions
diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c
index 54b8b204eb..67f70f286d 100644
--- a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c
+++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c
@@ -61,31 +61,7 @@ static irqreturn_t gsw_interrupt_mt7620(int irq, void *_priv)
return IRQ_HANDLED;
}
-static int mt7620_mdio_mode(struct device_node *eth_node)
-{
- struct device_node *phy_node, *mdiobus_node;
- const __be32 *id;
- int ret = 0;
-
- mdiobus_node = of_get_child_by_name(eth_node, "mdio-bus");
-
- if (mdiobus_node) {
- if (of_property_read_bool(mdiobus_node, "mediatek,mdio-mode"))
- ret = 1;
-
- for_each_child_of_node(mdiobus_node, phy_node) {
- id = of_get_property(phy_node, "reg", NULL);
- if (id && (be32_to_cpu(*id) == 0x1f))
- ret = 1;
- }
-
- of_node_put(mdiobus_node);
- }
-
- return ret;
-}
-
-static void mt7620_hw_init(struct mt7620_gsw *gsw, int mdio_mode)
+static void mt7620_hw_init(struct mt7620_gsw *gsw)
{
u32 i;
u32 val;
@@ -97,20 +73,6 @@ static void mt7620_hw_init(struct mt7620_gsw *gsw, int mdio_mode)
/* Enable MIB stats */
mtk_switch_w32(gsw, mtk_switch_r32(gsw, GSW_REG_MIB_CNT_EN) | (1 << 1), GSW_REG_MIB_CNT_EN);
- if (mdio_mode) {
- /* set MT7530 central align */
- val = mt7530_mdio_r32(gsw, 0x7830);
- val &= ~BIT(0);
- val |= BIT(1);
- mt7530_mdio_w32(gsw, 0x7830, val);
-
- val = mt7530_mdio_r32(gsw, 0x7a40);
- val &= ~BIT(30);
- mt7530_mdio_w32(gsw, 0x7a40, val);
-
- mt7530_mdio_w32(gsw, 0x7a78, 0x855);
- }
-
if (gsw->ephy_base) {
mtk_switch_w32(gsw, mtk_switch_r32(gsw, GSW_REG_GPC1) |
(gsw->ephy_base << 16),
@@ -215,9 +177,13 @@ MODULE_DEVICE_TABLE(of, mediatek_gsw_match);
int mtk_gsw_init(struct fe_priv *priv)
{
+ struct device_node *eth_node = priv->dev->of_node;
+ struct device_node *phy_node, *mdiobus_node;
struct device_node *np = priv->switch_np;
struct platform_device *pdev = of_find_device_by_node(np);
struct mt7620_gsw *gsw;
+ const __be32 *id;
+ u8 val;
if (!pdev)
return -ENODEV;
@@ -228,7 +194,23 @@ int mtk_gsw_init(struct fe_priv *priv)
gsw = platform_get_drvdata(pdev);
priv->soc->swpriv = gsw;
- mt7620_hw_init(gsw, mt7620_mdio_mode(priv->dev->of_node));
+ mdiobus_node = of_get_child_by_name(eth_node, "mdio-bus");
+ if (mdiobus_node) {
+ for_each_child_of_node(mdiobus_node, phy_node) {
+ id = of_get_property(phy_node, "reg", NULL);
+ if (id && (be32_to_cpu(*id) == 0x1f))
+ of_node_put(mdiobus_node);
+ }
+ }
+
+ gsw->port4_ephy = !of_property_read_bool(np, "mediatek,port4-gmac");
+
+ if (of_property_read_u8(np, "mediatek,ephy-base", &val) == 0)
+ gsw->ephy_base = val;
+ else
+ gsw->ephy_base = 0;
+
+ mt7620_hw_init(gsw);
if (gsw->irq) {
request_irq(gsw->irq, gsw_interrupt_mt7620, 0,
@@ -243,8 +225,6 @@ static int mt7620_gsw_probe(struct platform_device *pdev)
{
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
struct mt7620_gsw *gsw;
- struct device_node *np = pdev->dev.of_node;
- u8 val;
gsw = devm_kzalloc(&pdev->dev, sizeof(struct mt7620_gsw), GFP_KERNEL);
if (!gsw)
@@ -256,13 +236,6 @@ static int mt7620_gsw_probe(struct platform_device *pdev)
gsw->dev = &pdev->dev;
- gsw->port4_ephy = !of_property_read_bool(np, "mediatek,port4-gmac");
-
- if (of_property_read_u8(np, "mediatek,ephy-base", &val) == 0)
- gsw->ephy_base = val;
- else
- gsw->ephy_base = 0;
-
gsw->irq = platform_get_irq(pdev, 0);
platform_set_drvdata(pdev, gsw);
diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c
index acd7350932..4d012afa14 100644
--- a/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c
+++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c
@@ -82,11 +82,26 @@ static const u16 mt7620_reg_table[FE_REG_COUNT] = {
static int mt7620_gsw_config(struct fe_priv *priv)
{
struct mt7620_gsw *gsw = (struct mt7620_gsw *) priv->soc->swpriv;
+ u32 val;
/* is the mt7530 internal or external */
if (priv->mii_bus && mdiobus_get_phy(priv->mii_bus, 0x1f)) {
mt7530_probe(priv->dev, gsw->base, NULL, 0);
mt7530_probe(priv->dev, NULL, priv->mii_bus, 1);
+
+ /* magic values from original SDK */
+ val = mt7530_mdio_r32(gsw, 0x7830);
+ val &= ~BIT(0);
+ val |= BIT(1);
+ mt7530_mdio_w32(gsw, 0x7830, val);
+
+ val = mt7530_mdio_r32(gsw, 0x7a40);
+ val &= ~BIT(30);
+ mt7530_mdio_w32(gsw, 0x7a40, val);
+
+ mt7530_mdio_w32(gsw, 0x7a78, 0x855);
+
+ pr_info("mt7530: mdio central align\n");
} else {
mt7530_probe(priv->dev, gsw->base, NULL, 1);
}