[PATCH net-next 2/2] net: dsa: microchip: remove KSZ9477 PHY errata handling
From: Robert Hancock
Date: Fri Jun 02 2023 - 20:09:15 EST
The KSZ9477 PHY errata handling code has now been moved into the Micrel
PHY driver, so it is no longer needed inside the DSA switch driver.
Remove it.
Signed-off-by: Robert Hancock <robert.hancock@xxxxxxxxxx>
---
drivers/net/dsa/microchip/ksz9477.c | 74 ++------------------------
drivers/net/dsa/microchip/ksz_common.c | 4 --
drivers/net/dsa/microchip/ksz_common.h | 1 -
3 files changed, 4 insertions(+), 75 deletions(-)
diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c
index 47b54ecf2c6f..7720d53dc7a9 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -889,62 +889,6 @@ static phy_interface_t ksz9477_get_interface(struct ksz_device *dev, int port)
return interface;
}
-static void ksz9477_port_mmd_write(struct ksz_device *dev, int port,
- u8 dev_addr, u16 reg_addr, u16 val)
-{
- ksz_pwrite16(dev, port, REG_PORT_PHY_MMD_SETUP,
- MMD_SETUP(PORT_MMD_OP_INDEX, dev_addr));
- ksz_pwrite16(dev, port, REG_PORT_PHY_MMD_INDEX_DATA, reg_addr);
- ksz_pwrite16(dev, port, REG_PORT_PHY_MMD_SETUP,
- MMD_SETUP(PORT_MMD_OP_DATA_NO_INCR, dev_addr));
- ksz_pwrite16(dev, port, REG_PORT_PHY_MMD_INDEX_DATA, val);
-}
-
-static void ksz9477_phy_errata_setup(struct ksz_device *dev, int port)
-{
- /* Apply PHY settings to address errata listed in
- * KSZ9477, KSZ9897, KSZ9896, KSZ9567, KSZ8565
- * Silicon Errata and Data Sheet Clarification documents:
- *
- * Register settings are needed to improve PHY receive performance
- */
- ksz9477_port_mmd_write(dev, port, 0x01, 0x6f, 0xdd0b);
- ksz9477_port_mmd_write(dev, port, 0x01, 0x8f, 0x6032);
- ksz9477_port_mmd_write(dev, port, 0x01, 0x9d, 0x248c);
- ksz9477_port_mmd_write(dev, port, 0x01, 0x75, 0x0060);
- ksz9477_port_mmd_write(dev, port, 0x01, 0xd3, 0x7777);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x06, 0x3008);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x08, 0x2001);
-
- /* Transmit waveform amplitude can be improved
- * (1000BASE-T, 100BASE-TX, 10BASE-Te)
- */
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x04, 0x00d0);
-
- /* Energy Efficient Ethernet (EEE) feature select must
- * be manually disabled (except on KSZ8565 which is 100Mbit)
- */
- if (dev->info->gbit_capable[port])
- ksz9477_port_mmd_write(dev, port, 0x07, 0x3c, 0x0000);
-
- /* Register settings are required to meet data sheet
- * supply current specifications
- */
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x13, 0x6eff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x14, 0xe6ff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x15, 0x6eff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x16, 0xe6ff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x17, 0x00ff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x18, 0x43ff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x19, 0xc3ff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x1a, 0x6fff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x1b, 0x07ff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x1c, 0x0fff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x1d, 0xe7ff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x1e, 0xefff);
- ksz9477_port_mmd_write(dev, port, 0x1c, 0x20, 0xeeee);
-}
-
void ksz9477_get_caps(struct ksz_device *dev, int port,
struct phylink_config *config)
{
@@ -1011,20 +955,10 @@ void ksz9477_port_setup(struct ksz_device *dev, int port, bool cpu_port)
/* enable 802.1p priority */
ksz_port_cfg(dev, port, P_PRIO_CTRL, PORT_802_1P_PRIO_ENABLE, true);
- if (dev->info->internal_phy[port]) {
- /* do not force flow control */
- ksz_port_cfg(dev, port, REG_PORT_CTRL_0,
- PORT_FORCE_TX_FLOW_CTRL | PORT_FORCE_RX_FLOW_CTRL,
- false);
-
- if (dev->info->phy_errata_9477)
- ksz9477_phy_errata_setup(dev, port);
- } else {
- /* force flow control */
- ksz_port_cfg(dev, port, REG_PORT_CTRL_0,
- PORT_FORCE_TX_FLOW_CTRL | PORT_FORCE_RX_FLOW_CTRL,
- true);
- }
+ /* force flow control for non-PHY ports only */
+ ksz_port_cfg(dev, port, REG_PORT_CTRL_0,
+ PORT_FORCE_TX_FLOW_CTRL | PORT_FORCE_RX_FLOW_CTRL,
+ !dev->info->internal_phy[port]);
if (cpu_port)
member = dsa_user_ports(ds);
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 423f944cc34c..42cb5742f552 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -1212,7 +1212,6 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 7, /* total physical port count */
.port_nirqs = 4,
.ops = &ksz9477_dev_ops,
- .phy_errata_9477 = true,
.mib_names = ksz9477_mib_names,
.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
.reg_mib_cnt = MIB_COUNTER_NUM,
@@ -1244,7 +1243,6 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 6, /* total physical port count */
.port_nirqs = 2,
.ops = &ksz9477_dev_ops,
- .phy_errata_9477 = true,
.mib_names = ksz9477_mib_names,
.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
.reg_mib_cnt = MIB_COUNTER_NUM,
@@ -1276,7 +1274,6 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 7, /* total physical port count */
.port_nirqs = 2,
.ops = &ksz9477_dev_ops,
- .phy_errata_9477 = true,
.mib_names = ksz9477_mib_names,
.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
.reg_mib_cnt = MIB_COUNTER_NUM,
@@ -1356,7 +1353,6 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 7, /* total physical port count */
.port_nirqs = 3,
.ops = &ksz9477_dev_ops,
- .phy_errata_9477 = true,
.mib_names = ksz9477_mib_names,
.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
.reg_mib_cnt = MIB_COUNTER_NUM,
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index 055d61ff3fb8..9c5e8ea229fa 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -47,7 +47,6 @@ struct ksz_chip_data {
int port_cnt;
u8 port_nirqs;
const struct ksz_dev_ops *ops;
- bool phy_errata_9477;
bool ksz87xx_eee_link_erratum;
const struct ksz_mib_names *mib_names;
int mib_cnt;
--
2.40.1