From 5b8f970309ddfffd92cb3c12cb7cf4101fe0f8bf Mon Sep 17 00:00:00 2001 From: "Russell King (Oracle)" Date: Tue, 4 Jan 2022 16:38:13 +0000 Subject: [PATCH 1/2] net: phy: marvell: use phy_write_paged() to set MSCR Use phy_write_paged() in m88e1118_config_init() to set the MSCR value. We leave the other paged write for the LEDs in case the DT register parsing is relying on this page. Signed-off-by: Russell King (Oracle) Reviewed-by: Andrew Lunn Tested-by: Corentin Labbe Signed-off-by: Jakub Kicinski --- drivers/net/phy/marvell.c | 22 ++++++++-------------- 1 file changed, 8 insertions(+), 14 deletions(-) diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index 4fcfca4e1702..64e7874c95f4 100644 --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -1225,28 +1225,22 @@ static int m88e1118_config_aneg(struct phy_device *phydev) static int m88e1118_config_init(struct phy_device *phydev) { + u16 leds; int err; - /* Change address */ - err = marvell_set_page(phydev, MII_MARVELL_MSCR_PAGE); - if (err < 0) - return err; - /* Enable 1000 Mbit */ - err = phy_write(phydev, 0x15, 0x1070); - if (err < 0) - return err; - - /* Change address */ - err = marvell_set_page(phydev, MII_MARVELL_LED_PAGE); + err = phy_write_paged(phydev, MII_MARVELL_MSCR_PAGE, + MII_88E1121_PHY_MSCR_REG, 0x1070); if (err < 0) return err; /* Adjust LED Control */ if (phydev->dev_flags & MARVELL_PHY_M1118_DNS323_LEDS) - err = phy_write(phydev, 0x10, 0x1100); + leds = 0x1100; else - err = phy_write(phydev, 0x10, 0x021e); + leds = 0x021e; + + err = phy_write_paged(phydev, MII_MARVELL_LED_PAGE, 0x10, leds); if (err < 0) return err; @@ -1254,7 +1248,7 @@ static int m88e1118_config_init(struct phy_device *phydev) if (err < 0) return err; - /* Reset address */ + /* Reset page register */ err = marvell_set_page(phydev, MII_MARVELL_COPPER_PAGE); if (err < 0) return err; From f22725c95ececb703c3f741e8f946d23705630b7 Mon Sep 17 00:00:00 2001 From: "Russell King (Oracle)" Date: Tue, 4 Jan 2022 16:38:19 +0000 Subject: [PATCH 2/2] net: phy: marvell: configure RGMII delays for 88E1118 Corentin Labbe reports that the SSI 1328 does not work when allowing the PHY to operate at gigabit speeds, but does work with the generic PHY driver. This appears to be because m88e1118_config_init() writes a fixed value to the MSCR register, claiming that this is to enable 1G speeds. However, this always sets bits 4 and 5, enabling RGMII transmit and receive delays. The suspicion is that the original board this was added for required the delays to make 1G speeds work. Add the necessary configuration for RGMII delays for the 88E1118 to bring this into line with the requirements for RGMII support, and thus make the SSI 1328 work. Corentin Labbe has tested this on gemini-ssi1328 and gemini-ns2502. Reported-by: Corentin Labbe Tested-by: Corentin Labbe Signed-off-by: Russell King (Oracle) Reviewed-by: Andrew Lunn Signed-off-by: Jakub Kicinski --- drivers/net/phy/marvell.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index 64e7874c95f4..739859c0dfb1 100644 --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -1234,6 +1234,12 @@ static int m88e1118_config_init(struct phy_device *phydev) if (err < 0) return err; + if (phy_interface_is_rgmii(phydev)) { + err = m88e1121_config_aneg_rgmii_delays(phydev); + if (err < 0) + return err; + } + /* Adjust LED Control */ if (phydev->dev_flags & MARVELL_PHY_M1118_DNS323_LEDS) leds = 0x1100;