On Thu, Jun 29, 2023 at 1:18 AM Karsten Wiese karsten.wiese@protechna.com wrote:
Copy and tweak the required code from the linux kernel. Only the KSZ9893 has been tested.
Signed-off-by: Karsten Wiese karsten.wiese@protechna.com
drivers/net/ksz9477.c | 103 ++++++++++++++++++++++++++++++++++++------ 1 file changed, 89 insertions(+), 14 deletions(-)
diff --git a/drivers/net/ksz9477.c b/drivers/net/ksz9477.c index 6b59b5fcd2..43baa69961 100644 --- a/drivers/net/ksz9477.c +++ b/drivers/net/ksz9477.c @@ -16,6 +16,10 @@
#include <asm-generic/gpio.h>
+/* Used with variable features to indicate capabilities. */ +#define NEW_XMII BIT(1) +#define IS_9893 BIT(2)
/* Global registers */
/* Chip ID */ @@ -41,6 +45,13 @@ #define PORT_RMII_SEL 0x1 #define PORT_GMII_SEL 0x2 #define PORT_MII_SEL 0x3 +/* S1 */ +#define PORT_MII_1000MBIT_S1 BIT(6) +/* S1 */ +#define PORT_MII_SEL_S1 0x0 +#define PORT_RMII_SEL_S1 0x1 +#define PORT_GMII_SEL_S1 0x2 +#define PORT_RGMII_SEL_S1 0x3
/* Port MSTP State Register */ #define REG_PORT_MSTP_STATE 0x0b04 @@ -62,6 +73,8 @@
struct ksz_dsa_priv { struct udevice *dev;
u32 features; /* chip specific features */};
static inline int ksz_read8(struct udevice *dev, u32 reg, u8 *val) @@ -284,6 +297,60 @@ U_BOOT_DRIVER(ksz_mdio) = { .plat_auto = sizeof(struct mdio_perdev_priv), };
+static void ksz9477_set_gbit(struct ksz_dsa_priv *priv, bool gbit, u8 *data) +{
if (priv->features & NEW_XMII) {if (gbit)*data &= ~PORT_MII_NOT_1GBIT;else*data |= PORT_MII_NOT_1GBIT;} else {if (gbit)*data |= PORT_MII_1000MBIT_S1;else*data &= ~PORT_MII_1000MBIT_S1;}+}
+static void ksz9477_set_xmii(struct ksz_dsa_priv *priv, int mode, u8 *data) +{
u8 xmii;if (priv->features & NEW_XMII) {switch (mode) {case 0:xmii = PORT_MII_SEL;break;case 1:xmii = PORT_RMII_SEL;break;case 2:xmii = PORT_GMII_SEL;break;default:xmii = PORT_RGMII_SEL;break;}} else {switch (mode) {case 0:xmii = PORT_MII_SEL_S1;break;case 1:xmii = PORT_RMII_SEL_S1;break;case 2:xmii = PORT_GMII_SEL_S1;break;default:xmii = PORT_RGMII_SEL_S1;break;}}*data &= ~PORT_MII_SEL_M;*data |= xmii;+}
static int ksz_port_setup(struct udevice *dev, int port, phy_interface_t interface) { @@ -293,9 +360,11 @@ static int ksz_port_setup(struct udevice *dev, int port, dev_dbg(dev, "%s P%d %s\n", __func__, port + 1, (port == pdata->cpu_port) ? "cpu" : "");
struct ksz_dsa_priv *priv = dev_get_priv(dev); if (port != pdata->cpu_port) {
/* phy port: config errata and leds */ksz_phy_errata_setup(dev, port);
if (priv->features & NEW_XMII)/* phy port: config errata and leds */ksz_phy_errata_setup(dev, port); } else { /* cpu port: configure MAC interface mode */ ksz_pread8(dev, port, REG_PORT_XMII_CTRL_1, &data8);@@ -303,24 +372,20 @@ static int ksz_port_setup(struct udevice *dev, int port, phy_string_for_interface(interface)); switch (interface) { case PHY_INTERFACE_MODE_MII:
data8 &= ~PORT_MII_SEL_M;data8 |= PORT_MII_SEL;data8 |= PORT_MII_NOT_1GBIT;
ksz9477_set_xmii(priv, 0, &data8);ksz9477_set_gbit(priv, false, &data8); break; case PHY_INTERFACE_MODE_RMII:
data8 &= ~PORT_MII_SEL_M;data8 |= PORT_RMII_SEL;data8 |= PORT_MII_NOT_1GBIT;
ksz9477_set_xmii(priv, 1, &data8);ksz9477_set_gbit(priv, false, &data8); break; case PHY_INTERFACE_MODE_GMII:
data8 &= ~PORT_MII_SEL_M;data8 |= PORT_GMII_SEL;data8 &= ~PORT_MII_NOT_1GBIT;
ksz9477_set_xmii(priv, 2, &data8);ksz9477_set_gbit(priv, true, &data8); break; default:
data8 &= ~PORT_MII_SEL_M;data8 |= PORT_RGMII_SEL;data8 &= ~PORT_MII_NOT_1GBIT;
ksz9477_set_xmii(priv, 3, &data8);ksz9477_set_gbit(priv, true, &data8); data8 &= ~PORT_RGMII_ID_IG_ENABLE; data8 &= ~PORT_RGMII_ID_EG_ENABLE; if (interface == PHY_INTERFACE_MODE_RGMII_ID ||@@ -329,6 +394,8 @@ static int ksz_port_setup(struct udevice *dev, int port, if (interface == PHY_INTERFACE_MODE_RGMII_ID || interface == PHY_INTERFACE_MODE_RGMII_TXID) data8 |= PORT_RGMII_ID_EG_ENABLE;
if (priv->features & IS_9893)data8 &= ~PORT_MII_MAC_MODE; break; } ksz_write8(dev, PORT_CTRL_ADDR(port, REG_PORT_XMII_CTRL_1), data8);@@ -479,10 +546,17 @@ static int ksz_i2c_probe(struct udevice *dev) case 0x00989700: puts("KSZ9897S: "); break;
case 0x00989300:puts("KSZ9893R: ");break; default: dev_err(dev, "invalid chip id: 0x%08x\n", id); return -EINVAL; }if ((id & 0xf00) == 0x300)priv->features |= IS_9893;elsepriv->features |= NEW_XMII; /* probe mdio bus */ ret = ksz_probe_mdio(dev);@@ -503,6 +577,7 @@ static const struct udevice_id ksz_i2c_ids[] = { { .compatible = "microchip,ksz9897" }, { .compatible = "microchip,ksz9477" }, { .compatible = "microchip,ksz9567" },
{ .compatible = "microchip,ksz9893" }, { }};
-- 2.25.1
Reviewed-by: Ramon Fried rfried.dev@gmail.com