[PATCH v2 2/3] net: phy: ca_phy: Add driver for CAxxxx SoCs
Alex Nemirovsky
alex.nemirovsky at cortina-access.com
Thu Jan 14 22:34:12 CET 2021
From: Abbie Chang <abbie.chang at cortina-access.com>
Add phy driver support for MACs embedded inside Cortina Access SoCs
Signed-off-by: Abbie Chang <abbie.chang at cortina-access.com>
Signed-off-by: Alex Nemirovsky <alex.nemirovsky at cortina-access.com>
CC: Joe Hershberger <joe.hershberger at ni.com>
CC: Tom Rini <trini at konsulko.com>
CC: Aaron Tseng <aaron.tseng at cortina-access.com>
Moved out PHY specific code out of Cortina NI Ethernet driver
and into a Cortina Access PHY interface driver
---
Changes in v2: None
MAINTAINERS | 2 +
drivers/net/phy/Kconfig | 7 +++
drivers/net/phy/Makefile | 1 +
drivers/net/phy/ca_phy.c | 133 +++++++++++++++++++++++++++++++++++++++++++++++
drivers/net/phy/phy.c | 3 ++
include/phy.h | 1 +
6 files changed, 147 insertions(+)
create mode 100644 drivers/net/phy/ca_phy.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 74d6232..f9aab7d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -200,6 +200,7 @@ F: drivers/i2c/i2c-cortina.c
F: drivers/i2c/i2c-cortina.h
F: drivers/net/cortina_ni.c
F: drivers/net/cortina_ni.h
+F: drivers/net/phy/ca_phy.c
ARM/CZ.NIC TURRIS MOX SUPPORT
M: Marek Behun <marek.behun at nic.cz>
@@ -810,6 +811,7 @@ F: drivers/i2c/i2c-cortina.c
F: drivers/i2c/i2c-cortina.h
F: drivers/net/cortina_ni.c
F: drivers/net/cortina_ni.h
+F: drivers/net/phy/ca_phy.c
MIPS MSCC
M: Gregory CLEMENT <gregory.clement at bootlin.com>
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 51733dd..d695030 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -131,6 +131,13 @@ config SYS_CORTINA_FW_IN_SPIFLASH
endchoice
+config PHY_CORTINA_ACCESS
+ bool "Cortina Access Ethernet PHYs support"
+ default y
+ depends on CORTINA_NI_ENET
+ help
+ Cortina Access Ethernet PHYs init process
+
config PHY_DAVICOM
bool "Davicom Ethernet PHYs support"
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 6e72233..e967f82 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_PHY_AQUANTIA) += aquantia.o
obj-$(CONFIG_PHY_ATHEROS) += atheros.o
obj-$(CONFIG_PHY_BROADCOM) += broadcom.o
obj-$(CONFIG_PHY_CORTINA) += cortina.o
+obj-$(CONFIG_PHY_CORTINA_ACCESS) += ca_phy.o
obj-$(CONFIG_PHY_DAVICOM) += davicom.o
obj-$(CONFIG_PHY_ET1011C) += et1011c.o
obj-$(CONFIG_PHY_LXT) += lxt.o
diff --git a/drivers/net/phy/ca_phy.c b/drivers/net/phy/ca_phy.c
new file mode 100644
index 0000000..16851a6
--- /dev/null
+++ b/drivers/net/phy/ca_phy.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Cortina CS4315/CS4340 10G PHY drivers
+ *
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ * Copyright 2018 NXP
+ *
+ */
+
+#include <config.h>
+#include <common.h>
+#include <log.h>
+#include <malloc.h>
+#include <linux/ctype.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/err.h>
+#include <phy.h>
+
+#define PHY_ID_RTL8211_EXT 0x001cc910
+#define PHY_ID_RTL8211_INT 0x001cc980
+#define PHY_ID_MASK 0xFFFFFFF0
+
+static void __internal_phy_init(struct phy_device *phydev, int reset_phy)
+{
+ u8 phy_addr;
+ u16 data;
+
+ /* should initialize 4 GPHYs at once */
+ for (phy_addr = 4; phy_addr > 0; phy_addr--) {
+ phydev->addr = phy_addr;
+ phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0BC6);
+ phy_write(phydev, MDIO_DEVAD_NONE, 16, 0x0053);
+ phy_write(phydev, MDIO_DEVAD_NONE, 18, 0x4003);
+ phy_write(phydev, MDIO_DEVAD_NONE, 22, 0x7e01);
+ phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0A42);
+ phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0A40);
+ phy_write(phydev, MDIO_DEVAD_NONE, 0, 0x1140);
+ }
+
+ /* workaround to fix GPHY fail */
+ for (phy_addr = 1; phy_addr < 5; phy_addr++) {
+ /* Clear clock fail interrupt */
+ phydev->addr = phy_addr;
+ phy_write(phydev, MDIO_DEVAD_NONE, 31, 0xB90);
+ data = phy_read(phydev, MDIO_DEVAD_NONE, 19);
+ if (data == 0x10) {
+ phy_write(phydev, MDIO_DEVAD_NONE, 31, 0xB90);
+ data = phy_read(phydev, MDIO_DEVAD_NONE, 19);
+ printf("%s: read again.\n", __func__);
+ }
+
+ printf("%s: phy_addr=%d, read register 19, value=0x%x\n",
+ __func__, phy_addr, data);
+ }
+}
+
+static void __external_phy_init(struct phy_device *phydev, int reset_phy)
+{
+ u16 val;
+
+ /* Disable response PHYAD=0 function of RTL8211 series PHY */
+ /* REG31 write 0x0007, set to extension page */
+ phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0007);
+
+ /* REG30 write 0x002C, set to extension page 44 */
+ phy_write(phydev, MDIO_DEVAD_NONE, 30, 0x002C);
+
+ /*
+ * REG27 write bit[2] = 0 disable response PHYAD = 0 function.
+ * we should read REG27 and clear bit[2], and write back
+ */
+ val = phy_read(phydev, MDIO_DEVAD_NONE, 27);
+ val &= ~(1 << 2);
+ phy_write(phydev, MDIO_DEVAD_NONE, 27, val);
+
+ /* REG31 write 0X0000, back to page0 */
+ phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0000);
+}
+
+static int rtl8211_external_config(struct phy_device *phydev)
+{
+ __external_phy_init(phydev, 0);
+ printf("%s: initialize RTL8211 external done.\n", __func__);
+ return 0;
+}
+
+static int rtl8211_internal_config(struct phy_device *phydev)
+{
+ struct phy_device phydev_init;
+
+ memcpy(&phydev_init, phydev, sizeof(struct phy_device));
+ /* should initialize 4 GPHYs at once */
+ __internal_phy_init(&phydev_init, 0);
+ printf("%s: initialize RTL8211 internal done.\n", __func__);
+ return 0;
+}
+
+static int rtl8211_probe(struct phy_device *phydev)
+{
+ /* disable reset behavior */
+ phydev->flags = PHY_FLAG_BROKEN_RESET;
+ return 0;
+}
+
+/* Support for RTL8211 External PHY */
+struct phy_driver rtl8211_external_driver = {
+ .name = "Cortina RTL8211 External",
+ .uid = PHY_ID_RTL8211_EXT,
+ .mask = PHY_ID_MASK,
+ .features = PHY_GBIT_FEATURES,
+ .config = &rtl8211_external_config,
+ .probe = &rtl8211_probe,
+ .startup = &genphy_startup,
+};
+
+/* Support for RTL8211 Internal PHY */
+struct phy_driver rtl8211_internal_driver = {
+ .name = "Cortina RTL8211 Inrernal",
+ .uid = PHY_ID_RTL8211_INT,
+ .mask = PHY_ID_MASK,
+ .features = PHY_GBIT_FEATURES,
+ .config = &rtl8211_internal_config,
+ .probe = &rtl8211_probe,
+ .startup = &genphy_startup,
+};
+
+int phy_cortina_access_init(void)
+{
+ phy_register(&rtl8211_external_driver);
+ phy_register(&rtl8211_internal_driver);
+ return 0;
+}
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 9587e6b..662ea2b 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -500,6 +500,9 @@ int phy_init(void)
#ifdef CONFIG_PHY_CORTINA
phy_cortina_init();
#endif
+#ifdef CONFIG_PHY_CORTINA_ACCESS
+ phy_cortina_access_init();
+#endif
#ifdef CONFIG_PHY_DAVICOM
phy_davicom_init();
#endif
diff --git a/include/phy.h b/include/phy.h
index cbdb10d..7750efd 100644
--- a/include/phy.h
+++ b/include/phy.h
@@ -493,6 +493,7 @@ int phy_aquantia_init(void);
int phy_atheros_init(void);
int phy_broadcom_init(void);
int phy_cortina_init(void);
+int phy_cortina_access_init(void);
int phy_davicom_init(void);
int phy_et1011c_init(void);
int phy_lxt_init(void);
--
2.7.4
More information about the U-Boot
mailing list