[PATCH] phy: add nxp tja1103 phy driver
Ramon Fried
rfried.dev at gmail.com
Mon Jun 28 01:01:28 CEST 2021
On Fri, Jun 18, 2021 at 9:58 PM Radu Pirea (NXP OSS)
<radu-nicolae.pirea at oss.nxp.com> wrote:
>
> Add nxp tja1103 phy driver.
>
> Signed-off-by: Radu Pirea (NXP OSS) <radu-nicolae.pirea at oss.nxp.com>
> ---
> MAINTAINERS | 5 +
> drivers/net/phy/Kconfig | 6 +
> drivers/net/phy/Makefile | 1 +
> drivers/net/phy/nxp-c45-tja11xx.c | 348 ++++++++++++++++++++++++++++++
> drivers/net/phy/phy.c | 3 +
> include/phy.h | 5 +
> 6 files changed, 368 insertions(+)
> create mode 100644 drivers/net/phy/nxp-c45-tja11xx.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 20092cb367..737ba3b162 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -910,6 +910,11 @@ S: Maintained
> T: git https://source.denx.de/u-boot/custodians/u-boot-nios.git
> F: arch/nios2/
>
> +NXP C45 TJA11XX PHY DRIVER
> +M: Radu Pirea <radu-nicolae.pirea at oss.nxp.com>
> +S: Maintained
> +F: drivers/net/phy/nxp-c45-tja11xx.c
> +
> ONENAND
> #M: Lukasz Majewski <l.majewski at majess.pl>
> S: Orphaned (Since 2017-01)
> diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
> index 070ffa82cb..405bf76753 100644
> --- a/drivers/net/phy/Kconfig
> +++ b/drivers/net/phy/Kconfig
> @@ -197,6 +197,12 @@ config PHY_MSCC
> config PHY_NATSEMI
> bool "National Semiconductor Ethernet PHYs support"
>
> +config PHY_NXP_C45_TJA11XX
> + tristate "NXP C45 TJA11XX PHYs"
> + help
> + Enable support for NXP C45 TJA11XX PHYs.
> + Currently supports only the TJA1103 PHY.
> +
> config PHY_REALTEK
> bool "Realtek Ethernet PHYs support"
>
> diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
> index e967f82201..218b8c7669 100644
> --- a/drivers/net/phy/Makefile
> +++ b/drivers/net/phy/Makefile
> @@ -23,6 +23,7 @@ obj-$(CONFIG_PHY_MICREL_KSZ8XXX) += micrel_ksz8xxx.o
> obj-$(CONFIG_PHY_MICREL_KSZ90X1) += micrel_ksz90x1.o
> obj-$(CONFIG_PHY_MESON_GXL) += meson-gxl.o
> obj-$(CONFIG_PHY_NATSEMI) += natsemi.o
> +obj-$(CONFIG_PHY_NXP_C45_TJA11XX) += nxp-c45-tja11xx.o
> obj-$(CONFIG_PHY_REALTEK) += realtek.o
> obj-$(CONFIG_PHY_SMSC) += smsc.o
> obj-$(CONFIG_PHY_TERANETICS) += teranetics.o
> diff --git a/drivers/net/phy/nxp-c45-tja11xx.c b/drivers/net/phy/nxp-c45-tja11xx.c
> new file mode 100644
> index 0000000000..f86e31f0d9
> --- /dev/null
> +++ b/drivers/net/phy/nxp-c45-tja11xx.c
> @@ -0,0 +1,348 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * NXP C45 PHY driver
> + *
> + * Copyright 2021 NXP
> + * Author: Radu Pirea <radu-nicolae.pirea at oss.nxp.com>
> + */
> +#include <common.h>
> +#include <dm.h>
> +#include <dm/devres.h>
> +#include <linux/delay.h>
> +#include <linux/math64.h>
> +#include <linux/mdio.h>
> +#include <phy.h>
> +
> +#define PHY_ID_TJA_1103 0x001BB010
> +
> +#define VEND1_DEVICE_CONTROL 0x0040
> +#define DEVICE_CONTROL_RESET BIT(15)
> +#define DEVICE_CONTROL_CONFIG_GLOBAL_EN BIT(14)
> +#define DEVICE_CONTROL_CONFIG_ALL_EN BIT(13)
> +
> +#define VEND1_PORT_CONTROL 0x8040
> +#define PORT_CONTROL_EN BIT(14)
> +
> +#define VEND1_PHY_CONTROL 0x8100
> +#define PHY_CONFIG_EN BIT(14)
> +#define PHY_START_OP BIT(0)
> +
> +#define VEND1_PHY_CONFIG 0x8108
> +#define PHY_CONFIG_AUTO BIT(0)
> +
> +#define VEND1_PORT_INFRA_CONTROL 0xAC00
> +#define PORT_INFRA_CONTROL_EN BIT(14)
> +
> +#define VEND1_RXID 0xAFCC
> +#define VEND1_TXID 0xAFCD
> +#define ID_ENABLE BIT(15)
> +
> +#define VEND1_ABILITIES 0xAFC4
> +#define RGMII_ID_ABILITY BIT(15)
> +#define RGMII_ABILITY BIT(14)
> +#define RMII_ABILITY BIT(10)
> +#define REVMII_ABILITY BIT(9)
> +#define MII_ABILITY BIT(8)
> +#define SGMII_ABILITY BIT(0)
> +
> +#define VEND1_MII_BASIC_CONFIG 0xAFC6
> +#define MII_BASIC_CONFIG_REV BIT(8)
> +#define MII_BASIC_CONFIG_SGMII 0x9
> +#define MII_BASIC_CONFIG_RGMII 0x7
> +#define MII_BASIC_CONFIG_RMII 0x5
> +#define MII_BASIC_CONFIG_MII 0x4
> +
> +#define RGMII_PERIOD_PS 8000U
> +#define PS_PER_DEGREE div_u64(RGMII_PERIOD_PS, 360)
> +#define MIN_ID_PS 1644U
> +#define MAX_ID_PS 2260U
> +#define DEFAULT_ID_PS 2000U
> +
> +#define RESET_DELAY_MS 25
> +#define CONF_EN_DELAY_US 450
> +
> +struct nxp_c45_phy {
> + u32 tx_delay;
> + u32 rx_delay;
> +};
> +
> +static int nxp_c45_soft_reset(struct phy_device *phydev)
> +{
> + int tries = 10, ret;
> +
> + ret = phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_DEVICE_CONTROL,
> + DEVICE_CONTROL_RESET);
> + if (ret)
> + return ret;
> +
> + do {
> + ret = phy_read_mmd(phydev, MDIO_MMD_VEND1,
> + VEND1_DEVICE_CONTROL);
> + if (!(ret & DEVICE_CONTROL_RESET))
> + return 0;
> + mdelay(RESET_DELAY_MS);
> + } while (tries--);
> +
> + return -EIO;
> +}
> +
> +static int nxp_c45_start_op(struct phy_device *phydev)
> +{
> + return phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_PHY_CONTROL,
> + PHY_START_OP);
> +}
> +
> +static int nxp_c45_config_enable(struct phy_device *phydev)
> +{
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_DEVICE_CONTROL,
> + DEVICE_CONTROL_CONFIG_GLOBAL_EN |
> + DEVICE_CONTROL_CONFIG_ALL_EN);
> + udelay(CONF_EN_DELAY_US);
> +
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_PORT_CONTROL,
> + PORT_CONTROL_EN);
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_PHY_CONTROL,
> + PHY_CONFIG_EN);
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_PORT_INFRA_CONTROL,
> + PORT_INFRA_CONTROL_EN);
> +
> + return 0;
> +}
> +
> +static u64 nxp_c45_get_phase_shift(u64 phase_offset_raw)
> +{
> + /* The delay in degree phase is 73.8 + phase_offset_raw * 0.9.
> + * To avoid floating point operations we'll multiply by 10
> + * and get 1 decimal point precision.
> + */
> + phase_offset_raw *= 10;
> + phase_offset_raw -= 738;
> + return div_u64(phase_offset_raw, 9);
> +}
> +
> +static void nxp_c45_disable_delays(struct phy_device *phydev)
> +{
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_TXID, 0);
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_RXID, 0);
> +}
> +
> +static int nxp_c45_check_delay(struct phy_device *phydev, u32 delay)
> +{
> + if (delay < MIN_ID_PS) {
> + pr_err("%s: delay value smaller than %u\n",
> + phydev->drv->name, MIN_ID_PS);
> + return -EINVAL;
> + }
> +
> + if (delay > MAX_ID_PS) {
> + pr_err("%s: delay value higher than %u\n",
> + phydev->drv->name, MAX_ID_PS);
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static int nxp_c45_get_delays(struct phy_device *phydev)
> +{
> + struct nxp_c45_phy *priv = phydev->priv;
> + int ret;
> +
> + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
> + phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
> + ret = dev_read_u32(phydev->dev, "tx-internal-delay-ps",
> + &priv->tx_delay);
> + if (ret)
> + priv->tx_delay = DEFAULT_ID_PS;
> +
> + ret = nxp_c45_check_delay(phydev, priv->tx_delay);
> + if (ret) {
> + pr_err("%s: tx-internal-delay-ps invalid value\n",
> + phydev->drv->name);
> + return ret;
> + }
> + }
> +
> + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
> + phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
> + ret = dev_read_u32(phydev->dev, "rx-internal-delay-ps",
> + &priv->rx_delay);
> + if (ret)
> + priv->rx_delay = DEFAULT_ID_PS;
> +
> + ret = nxp_c45_check_delay(phydev, priv->rx_delay);
> + if (ret) {
> + pr_err("%s: rx-internal-delay-ps invalid value\n",
> + phydev->drv->name);
> + return ret;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static void nxp_c45_set_delays(struct phy_device *phydev)
> +{
> + struct nxp_c45_phy *priv = phydev->priv;
> + u64 tx_delay = priv->tx_delay;
> + u64 rx_delay = priv->rx_delay;
> + u64 degree;
> +
> + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
> + phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
> + degree = div_u64(tx_delay, PS_PER_DEGREE);
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_TXID,
> + ID_ENABLE | nxp_c45_get_phase_shift(degree));
> + } else {
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_TXID, 0);
> + }
> +
> + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
> + phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
> + degree = div_u64(rx_delay, PS_PER_DEGREE);
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_RXID,
> + ID_ENABLE | nxp_c45_get_phase_shift(degree));
> + } else {
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_RXID, 0);
> + }
> +}
> +
> +static int nxp_c45_set_phy_mode(struct phy_device *phydev)
> +{
> + int ret;
> +
> + ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_ABILITIES);
> + pr_debug("%s: Clause 45 managed PHY abilities 0x%x\n",
> + phydev->drv->name, ret);
> +
> + switch (phydev->interface) {
> + case PHY_INTERFACE_MODE_RGMII:
> + if (!(ret & RGMII_ABILITY)) {
> + pr_err("%s: rgmii mode not supported\n",
> + phydev->drv->name);
> + return -EINVAL;
> + }
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_MII_BASIC_CONFIG,
> + MII_BASIC_CONFIG_RGMII);
> + nxp_c45_disable_delays(phydev);
> + break;
> + case PHY_INTERFACE_MODE_RGMII_ID:
> + case PHY_INTERFACE_MODE_RGMII_TXID:
> + case PHY_INTERFACE_MODE_RGMII_RXID:
> + if (!(ret & RGMII_ID_ABILITY)) {
> + pr_err("%s: rgmii-id, rgmii-txid, rgmii-rxid modes are not supported\n",
> + phydev->drv->name);
> + return -EINVAL;
> + }
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_MII_BASIC_CONFIG,
> + MII_BASIC_CONFIG_RGMII);
> + ret = nxp_c45_get_delays(phydev);
> + if (ret)
> + return ret;
> +
> + nxp_c45_set_delays(phydev);
> + break;
> + case PHY_INTERFACE_MODE_MII:
> + if (!(ret & MII_ABILITY)) {
> + pr_err("%s: mii mode not supported\n",
> + phydev->drv->name);
> + return -EINVAL;
> + }
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_MII_BASIC_CONFIG,
> + MII_BASIC_CONFIG_MII);
> + break;
> + case PHY_INTERFACE_MODE_RMII:
> + if (!(ret & RMII_ABILITY)) {
> + pr_err("%s: rmii mode not supported\n",
> + phydev->drv->name);
> + return -EINVAL;
> + }
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_MII_BASIC_CONFIG,
> + MII_BASIC_CONFIG_RMII);
> + break;
> + case PHY_INTERFACE_MODE_SGMII:
> + if (!(ret & SGMII_ABILITY)) {
> + pr_err("%s: sgmii mode not supported\n",
> + phydev->drv->name);
> + return -EINVAL;
> + }
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_MII_BASIC_CONFIG,
> + MII_BASIC_CONFIG_SGMII);
> + break;
> + case PHY_INTERFACE_MODE_INTERNAL:
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static int nxp_c45_config(struct phy_device *phydev)
> +{
> + int ret;
> +
> + ret = nxp_c45_soft_reset(phydev);
> + if (ret)
> + return ret;
> +
> + ret = nxp_c45_config_enable(phydev);
> + if (ret) {
> + pr_err("%s: Failed to enable config\n", phydev->drv->name);
> + return ret;
> + }
> +
> + phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_PHY_CONFIG,
> + PHY_CONFIG_AUTO);
> +
> + ret = nxp_c45_set_phy_mode(phydev);
> + if (ret) {
> + pr_err("%s: Failed to set phy mode\n", phydev->drv->name);
> + return ret;
> + }
> +
> + phydev->autoneg = AUTONEG_DISABLE;
> +
> + return nxp_c45_start_op(phydev);
> +}
> +
> +static int nxp_c45_startup(struct phy_device *phydev)
> +{
> + u32 reg;
> +
> + reg = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_STAT1);
> + phydev->link = !!(reg & MDIO_STAT1_LSTATUS);
> + phydev->speed = SPEED_100;
> + phydev->duplex = DUPLEX_FULL;
> + return 0;
> +}
> +
> +static int nxp_c45_probe(struct phy_device *phydev)
> +{
> + struct nxp_c45_phy *priv;
> +
> + priv = devm_kzalloc(phydev->priv, sizeof(*priv), GFP_KERNEL);
> + if (!priv)
> + return -ENOMEM;
> +
> + phydev->priv = priv;
> +
> + return 0;
> +}
> +
> +static struct phy_driver nxp_tja11xx = {
> + .name = "NXP C45 TJA1103",
> + .uid = PHY_ID_TJA_1103,
> + .mask = 0xfffff0,
> + .features = PHY_100BT1_FEATURES,
> + .probe = &nxp_c45_probe,
> + .config = &nxp_c45_config,
> + .startup = &nxp_c45_startup,
> + .shutdown = &genphy_shutdown,
> +};
> +
> +int phy_nxp_tja11xx_init(void)
> +{
> + phy_register(&nxp_tja11xx);
> + return 0;
> +}
> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
> index ed197fa46d..69acb69460 100644
> --- a/drivers/net/phy/phy.c
> +++ b/drivers/net/phy/phy.c
> @@ -529,6 +529,9 @@ int phy_init(void)
> #ifdef CONFIG_PHY_NATSEMI
> phy_natsemi_init();
> #endif
> +#ifdef CONFIG_NXP_C45_TJA11XX_PHY
> + phy_nxp_tja11xx_init();
> +#endif
> #ifdef CONFIG_PHY_REALTEK
> phy_realtek_init();
> #endif
> diff --git a/include/phy.h b/include/phy.h
> index 2754421ed4..6b928636b6 100644
> --- a/include/phy.h
> +++ b/include/phy.h
> @@ -51,6 +51,10 @@ struct udevice;
> PHY_100BT_FEATURES | \
> PHY_DEFAULT_FEATURES)
>
> +#define PHY_100BT1_FEATURES (SUPPORTED_TP | \
> + SUPPORTED_MII | \
> + SUPPORTED_100baseT_Full)
> +
> #define PHY_GBIT_FEATURES (PHY_BASIC_FEATURES | \
> PHY_1000BT_FEATURES)
>
> @@ -523,6 +527,7 @@ int phy_micrel_ksz8xxx_init(void);
> int phy_micrel_ksz90x1_init(void);
> int phy_meson_gxl_init(void);
> int phy_natsemi_init(void);
> +int phy_nxp_tja11xx_init(void);
> int phy_realtek_init(void);
> int phy_smsc_init(void);
> int phy_teranetics_init(void);
> --
> 2.31.1
>
Reviewed-by: Ramon Fried <rfried.dev at gmail.com>
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