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net: dsa: mt7530: fix support for MT7531BE

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There are two variants of the MT7531 switch IC which got different
features (and pins) regarding port 5:
 * MT7531AE: SGMII/1000Base-X/2500Base-X SerDes PCS
 * MT7531BE: RGMII

Moving the creation of the SerDes PCS from mt753x_setup to mt7530_probe
with commit 6de2852297 ("net: dsa: mt7530: move SGMII PCS creation
to mt7530_probe function") works fine for MT7531AE which got two
instances of mtk-pcs-lynxi, however, MT7531BE requires mt7531_pll_setup
to setup clocks before the single PCS on port 6 (usually used as CPU
port) starts to work and hence the PCS creation failed on MT7531BE.

Fix this by introducing a pointer to mt7531_create_sgmii function in
struct mt7530_priv and call it again at the end of mt753x_setup like it
was before commit 6de2852297 ("net: dsa: mt7530: move SGMII PCS
creation to mt7530_probe function").

Fixes: 6de2852297 ("net: dsa: mt7530: move SGMII PCS creation to mt7530_probe function")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Acked-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Link: https://lore.kernel.org/r/ZDvlLhhqheobUvOK@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Daniel Golle 2023-04-16 13:08:14 +01:00 committed by Jakub Kicinski
parent 8e4c62c7d9
commit 91daa4f62c
3 changed files with 16 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/net/dsa/mt7530-mdio.c
View File

@ -81,14 +81,17 @@ static const struct regmap_bus mt7530_regmap_bus = {
};
static int
mt7531_create_sgmii(struct mt7530_priv *priv)
mt7531_create_sgmii(struct mt7530_priv *priv, bool dual_sgmii)
{
struct regmap_config *mt7531_pcs_config[2];
struct regmap_config *mt7531_pcs_config[2] = {};
struct phylink_pcs *pcs;
struct regmap *regmap;
int i, ret = 0;
for (i = 0; i < 2; i++) {
/* MT7531AE has two SGMII units for port 5 and port 6
* MT7531BE has only one SGMII unit for port 6
*/
for (i = dual_sgmii ? 0 : 1; i < 2; i++) {
mt7531_pcs_config[i] = devm_kzalloc(priv->dev,
sizeof(struct regmap_config),
GFP_KERNEL);
@ -208,11 +211,8 @@ mt7530_probe(struct mdio_device *mdiodev)
if (IS_ERR(priv->regmap))
return PTR_ERR(priv->regmap);
if (priv->id == ID_MT7531) {
ret = mt7531_create_sgmii(priv);
if (ret)
return ret;
}
if (priv->id == ID_MT7531)
priv->create_sgmii = mt7531_create_sgmii;
return dsa_register_switch(priv->ds);
}

6
drivers/net/dsa/mt7530.c
View File

@ -3018,6 +3018,12 @@ mt753x_setup(struct dsa_switch *ds)
if (ret && priv->irq)
mt7530_free_irq_common(priv);
if (priv->create_sgmii) {
ret = priv->create_sgmii(priv, mt7531_dual_sgmii_supported(priv));
if (ret && priv->irq)
mt7530_free_irq(priv);
}
return ret;
}

4
drivers/net/dsa/mt7530.h
View File

@ -748,10 +748,10 @@ struct mt753x_info {
* registers
* @p6_interface Holding the current port 6 interface
* @p5_intf_sel: Holding the current port 5 interface select
*
* @irq: IRQ number of the switch
* @irq_domain: IRQ domain of the switch irq_chip
* @irq_enable: IRQ enable bits, synced to SYS_INT_EN
* @create_sgmii: Pointer to function creating SGMII PCS instance(s)
*/
struct mt7530_priv {
struct device *dev;
@ -770,7 +770,6 @@ struct mt7530_priv {
unsigned int p5_intf_sel;
u8 mirror_rx;
u8 mirror_tx;
struct mt7530_port ports[MT7530_NUM_PORTS];
struct mt753x_pcs pcs[MT7530_NUM_PORTS];
/* protect among processes for registers access*/
@ -778,6 +777,7 @@ struct mt7530_priv {
int irq;
struct irq_domain *irq_domain;
u32 irq_enable;
int (*create_sgmii)(struct mt7530_priv *priv, bool dual_sgmii);
};
struct mt7530_hw_vlan_entry {