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path: root/drivers/net/phy/meson-gxl.c
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Diffstat (limited to 'drivers/net/phy/meson-gxl.c')
-rw-r--r--drivers/net/phy/meson-gxl.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/net/phy/meson-gxl.c b/drivers/net/phy/meson-gxl.c
new file mode 100644
index 000000000000..1ea69b7585d9
--- /dev/null
+++ b/drivers/net/phy/meson-gxl.c
@@ -0,0 +1,81 @@
+/*
+ * Amlogic Meson GXL Internal PHY Driver
+ *
+ * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
+ * Copyright (C) 2016 BayLibre, SAS. All rights reserved.
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+#include <linux/netdevice.h>
+
+static int meson_gxl_config_init(struct phy_device *phydev)
+{
+ /* Enable Analog and DSP register Bank access by */
+ phy_write(phydev, 0x14, 0x0000);
+ phy_write(phydev, 0x14, 0x0400);
+ phy_write(phydev, 0x14, 0x0000);
+ phy_write(phydev, 0x14, 0x0400);
+
+ /* Write Analog register 23 */
+ phy_write(phydev, 0x17, 0x8E0D);
+ phy_write(phydev, 0x14, 0x4417);
+
+ /* Enable fractional PLL */
+ phy_write(phydev, 0x17, 0x0005);
+ phy_write(phydev, 0x14, 0x5C1B);
+
+ /* Program fraction FR_PLL_DIV1 */
+ phy_write(phydev, 0x17, 0x029A);
+ phy_write(phydev, 0x14, 0x5C1D);
+
+ /* Program fraction FR_PLL_DIV1 */
+ phy_write(phydev, 0x17, 0xAAAA);
+ phy_write(phydev, 0x14, 0x5C1C);
+
+ return 0;
+}
+
+static struct phy_driver meson_gxl_phy[] = {
+ {
+ .phy_id = 0x01814400,
+ .phy_id_mask = 0xfffffff0,
+ .name = "Meson GXL Internal PHY",
+ .features = PHY_BASIC_FEATURES,
+ .flags = PHY_IS_INTERNAL,
+ .config_init = meson_gxl_config_init,
+ .config_aneg = genphy_config_aneg,
+ .aneg_done = genphy_aneg_done,
+ .read_status = genphy_read_status,
+ .suspend = genphy_suspend,
+ .resume = genphy_resume,
+ },
+};
+
+static struct mdio_device_id __maybe_unused meson_gxl_tbl[] = {
+ { 0x01814400, 0xfffffff0 },
+ { }
+};
+
+module_phy_driver(meson_gxl_phy);
+
+MODULE_DEVICE_TABLE(mdio, meson_gxl_tbl);
+
+MODULE_DESCRIPTION("Amlogic Meson GXL Internal PHY driver");
+MODULE_AUTHOR("Baoqi wang");
+MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
+MODULE_LICENSE("GPL");