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dsa: qca8k: add mac_power_sel support 

Add missing mac power sel support needed for ipq8064/5 SoC that require
1.8v for the internal regulator port instead of the default 1.5v.
If other device needs this, consider adding a dedicated binding to
support this.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ansuel Smith 2021-10-14 00:39:06 +02:00 committed by David S. Miller
parent bacc8daf97
commit d8b6f5bae6
2 changed files with 36 additions and 0 deletions
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31
drivers/net/dsa/qca8k.c
View File

@ -950,6 +950,33 @@ qca8k_setup_of_rgmii_delay(struct qca8k_priv *priv)
return 0;
}
static int
qca8k_setup_mac_pwr_sel(struct qca8k_priv *priv)
{
u32 mask = 0;
int ret = 0;
/* SoC specific settings for ipq8064.
* If more device require this consider adding
* a dedicated binding.
*/
if (of_machine_is_compatible("qcom,ipq8064"))
mask |= QCA8K_MAC_PWR_RGMII0_1_8V;
/* SoC specific settings for ipq8065 */
if (of_machine_is_compatible("qcom,ipq8065"))
mask |= QCA8K_MAC_PWR_RGMII1_1_8V;
if (mask) {
ret = qca8k_rmw(priv, QCA8K_REG_MAC_PWR_SEL,
QCA8K_MAC_PWR_RGMII0_1_8V |
QCA8K_MAC_PWR_RGMII1_1_8V,
mask);
}
return ret;
}
static int
qca8k_setup(struct dsa_switch *ds)
{
@ -979,6 +1006,10 @@ qca8k_setup(struct dsa_switch *ds)
if (ret)
return ret;
ret = qca8k_setup_mac_pwr_sel(priv);
if (ret)
return ret;
/* Enable CPU Port */
ret = qca8k_reg_set(priv, QCA8K_REG_GLOBAL_FW_CTRL0,
QCA8K_GLOBAL_FW_CTRL0_CPU_PORT_EN);

5
drivers/net/dsa/qca8k.h
View File

@ -100,6 +100,11 @@
#define QCA8K_SGMII_MODE_CTRL_PHY (1 << 22)
#define QCA8K_SGMII_MODE_CTRL_MAC (2 << 22)
/* MAC_PWR_SEL registers */
#define QCA8K_REG_MAC_PWR_SEL 0x0e4
#define QCA8K_MAC_PWR_RGMII1_1_8V BIT(18)
#define QCA8K_MAC_PWR_RGMII0_1_8V BIT(19)
/* EEE control registers */
#define QCA8K_REG_EEE_CTRL 0x100
#define QCA8K_REG_EEE_CTRL_LPI_EN(_i) ((_i + 1) * 2)