Hi Stefan, On Thu, Apr 7, 2022 at 10:55 PM Tony Dinh <mibo...@gmail.com> wrote: > > On Thu, Apr 7, 2022 at 10:39 PM Stefan Roese <s...@denx.de> wrote: > > > > Hi Tony, > > > > On 4/8/22 07:03, Tony Dinh wrote: > > > Hi all, > > > > > > This is a work-in-progress patch that I'm working on, to clean up the > > > DM Ethernet code for the Zyxel NSA310S board (Kirkwood 88F6702 A1). > > > > > > This NSA310s board Ethernet has some quirks that it does not work > > > quite the same way as other Kirwood boards with the similar network > > > chip (MV88E1318), such as the Sheevaplug and the Dreamplug. > > > > > > Currently, in the NSA310S board file we use CONFIG_RESET_PHY_R to > > > execute reset_phy() during initialization. And the reset_phy() code in > > > this board file is ad-hoc, does not involve Marvell PHY driver (which > > > it should be). So I'm following the same pattern that I've done for > > > the Sheevaplug: use the uclass drivers/net/mvgbe.c (CONFIG_MVGBE) to > > > bring up Ethernet, removing the reset_phy() code, and enable > > > CONFIG_PHY_MARVEL. > > > > > > With this board, I could not get it to work the same way as for the > > > Sheevaplug to bring up the PHY automatically. I had to insert the > > > ad-hoc code to set RGMII delay in the __mvgbe_phy_init() function in > > > mvgbe.c, so the phy_connect() call will find the PHY. The PHY Id is > > > 1410e90, same as in the Sheevaplug and Dreamplug. Please see this in > > > the patch below (it's only a hack to see the PHY can be brought up > > > this way). > > > > Looking at drivers/net/phy/marvell.c I see that m88e1310_config() > > does exactly this rx/tx delay configuration: > > > > /* Marvell 88E1310 */ > > static int m88e1310_config(struct phy_device *phydev) > > { > > ... > > /* Set RGMII delay */ > > phy_write(phydev, MDIO_DEVAD_NONE, MIIM_88E1310_PHY_PAGE, 0x0002); > > reg = phy_read(phydev, MDIO_DEVAD_NONE, > > MIIM_88E1310_PHY_RGMII_CTRL); > > reg |= 0x0030; > > phy_write(phydev, MDIO_DEVAD_NONE, MIIM_88E1310_PHY_RGMII_CTRL, > > reg); > > > > Are you sure that this functions is not called while probing / > > enabling the network interface? > > > > > With the Sheevaplug and Dreamplug, there is no need to do this hack. > > > The uclass mvgbe did all the work, by the time phy_connect() is > > > executed, the PHY was already up and working fine. And then the > > > Marvell PHY driver kicks in, setting up the rest. > > > > > > Perhaps we need code in the uclass MVGBE that handles this in a > > > generic way? These are the Marvell PHY driver functions invoked after > > > phy_connect() was successful. This happens in all 3 boards > > > (Sheevaplug, Dreamplug, and NSA310s). > > > > > > m88e1310_config > > > m88e1011s_startup > > > > Ah okay, It's executed. > > > > > I would appreciate hearing some explanation and perhaps some > > > suggestion/guidance about this topic. > > > > If all 3 boards use the same ethernet driver with the same configuration > > (e.g. CONFIG_PHYLIB, CONFIG_EM_ETH etc) and the same PHY, there should > > of course be no need to handle this differently for this Zyxel board. > > I suggest to continue debugging to see, why this really is necessary. > > Perhaps some soft-reset of the PHY clears this rx/tx delay again? > > That's interesting. I recall trying miiphy_reset before phy_connect, > but not phy_reset. I'll try that. > > By the way, without doing something to make the PHY available at that > point, the phy_connect would fail, so the Marvell PHY driver was never > invoked later.
I've tried the soft phy_reset (instead of the ad-hoc code for RGMII), the board just hangs, and I need to recycle the power to reboot. > > Additionally your patch seems to be indented incorrectly. This makes > > reviewing a bit harder. I will send in the V2 patch shortly. Thanks, Tony > > Sorry about that! I forgot to run checkpatch since it is an RFC patch. > Will send the V2 patch for this. > > Thanks for looking at this, > Tony > > > > > > Thanks, > > Stefan > > > > > Thanks, > > > Tony > > > > > > diff --git a/board/zyxel/nsa310s/nsa310s.c b/board/zyxel/nsa310s/nsa310s.c > > > index b71de4e11f..78d472d56c 100644 > > > --- a/board/zyxel/nsa310s/nsa310s.c > > > +++ b/board/zyxel/nsa310s/nsa310s.c > > > @@ -1,22 +1,49 @@ > > > // SPDX-License-Identifier: GPL-2.0+ > > > /* > > > - * Copyright (C) 2015, 2021 Tony Dinh <mibo...@gmail.com> > > > + * Copyright (C) 2015, 2021-2022 Tony Dinh <mibo...@gmail.com> > > > * Copyright (C) 2015 Gerald Kerma <drea...@doukki.net> > > > */ > > > > > > #include <common.h> > > > #include <init.h> > > > -#include <miiphy.h> > > > -#include <net.h> > > > +#include <netdev.h> > > > #include <asm/arch/cpu.h> > > > #include <asm/arch/soc.h> > > > #include <asm/arch/mpp.h> > > > #include <asm/global_data.h> > > > #include <asm/io.h> > > > -#include "nsa310s.h" > > > +#include <linux/bitops.h> > > > > > > DECLARE_GLOBAL_DATA_PTR; > > > > > > +/* > > > + * low GPIO's > > > + */ > > > +#define HDD1_GREEN_LED BIT(16) > > > +#define HDD1_RED_LED BIT(13) > > > +#define USB_GREEN_LED BIT(15) > > > +#define USB_POWER BIT(21) > > > +#define SYS_GREEN_LED BIT(28) > > > +#define SYS_ORANGE_LED BIT(29) > > > + > > > +#define COPY_GREEN_LED BIT(22) > > > +#define COPY_RED_LED BIT(23) > > > + > > > +#define PIN_USB_GREEN_LED 15 > > > +#define PIN_USB_POWER 21 > > > + > > > +#define NSA310S_OE_LOW (~(0)) > > > +#define NSA310S_VAL_LOW (SYS_GREEN_LED | USB_POWER) > > > + > > > +/* > > > + * high GPIO's > > > +*/ > > > +#define HDD2_GREEN_LED BIT(2) > > > +#define HDD2_POWER BIT(1) > > > + > > > +#define NSA310S_OE_HIGH (~(0)) > > > +#define NSA310S_VAL_HIGH (HDD2_POWER) > > > + > > > int board_early_init_f(void) > > > { > > > /* > > > @@ -80,87 +107,7 @@ int board_init(void) > > > return 0; > > > } > > > > > > -static int fdt_get_phy_addr(const char *path) > > > +int board_eth_init(struct bd_info *bis) > > > { > > > - const void *fdt = gd->fdt_blob; > > > - const u32 *reg; > > > - const u32 *val; > > > - int node, phandle, addr; > > > - > > > - /* Find the node by its full path */ > > > - node = fdt_path_offset(fdt, path); > > > - if (node >= 0) { > > > - /* Look up phy-handle */ > > > - val = fdt_getprop(fdt, node, "phy-handle", NULL); > > > - if (val) { > > > - phandle = fdt32_to_cpu(*val); > > > - if (!phandle) > > > - return -1; > > > - /* Follow it to its node */ > > > - node = fdt_node_offset_by_phandle(fdt, phandle); > > > - if (node) { > > > - /* Look up reg */ > > > - reg = fdt_getprop(fdt, node, "reg", NULL); > > > - if (reg) { > > > - addr = fdt32_to_cpu(*reg); > > > - return addr; > > > - } > > > - } > > > - } > > > - } > > > - return -1; > > > -} > > > - > > > -#ifdef CONFIG_RESET_PHY_R > > > -void reset_phy(void) > > > -{ > > > - u16 reg; > > > - u16 phyaddr; > > > - char *name = "ethernet-controller@72000"; > > > - char *eth0_path = > > > "/ocp@f1000000/ethernet-controller@72000/ethernet0-port@0"; > > > - > > > - if (miiphy_set_current_dev(name)) > > > - return; > > > - > > > - phyaddr = fdt_get_phy_addr(eth0_path); > > > - if (phyaddr < 0) > > > - return; > > > - > > > - /* set RGMII delay */ > > > - miiphy_write(name, phyaddr, MV88E1318_PGADR_REG, MV88E1318_MAC_CTRL_PG); > > > - miiphy_read(name, phyaddr, MV88E1318_MAC_CTRL_REG, ®); > > > - reg |= (MV88E1318_RGMII_RX_CTRL | MV88E1318_RGMII_TX_CTRL); > > > - miiphy_write(name, phyaddr, MV88E1318_MAC_CTRL_REG, reg); > > > - miiphy_write(name, phyaddr, MV88E1318_PGADR_REG, 0); > > > - > > > - /* reset PHY */ > > > - if (miiphy_reset(name, phyaddr)) > > > - return; > > > - > > > - /* > > > - * ZyXEL NSA310S uses the 88E1310S Alaska (interface identical to > > > 88E1318) > > > - * and has an MCU attached to the LED[2] via tristate interrupt > > > - */ > > > - > > > - /* switch to LED register page */ > > > - miiphy_write(name, phyaddr, MV88E1318_PGADR_REG, MV88E1318_LED_PG); > > > - /* read out LED polarity register */ > > > - miiphy_read(name, phyaddr, MV88E1318_LED_POL_REG, ®); > > > - /* clear 4, set 5 - LED2 low, tri-state */ > > > - reg &= ~(MV88E1318_LED2_4); > > > - reg |= (MV88E1318_LED2_5); > > > - /* write back LED polarity register */ > > > - miiphy_write(name, phyaddr, MV88E1318_LED_POL_REG, reg); > > > - /* jump back to page 0, per the PHY chip documenation. */ > > > - miiphy_write(name, phyaddr, MV88E1318_PGADR_REG, 0); > > > - > > > - /* set PHY back to auto-negotiation mode */ > > > - miiphy_write(name, phyaddr, 0x4, 0x1e1); > > > - miiphy_write(name, phyaddr, 0x9, 0x300); > > > - /* downshift */ > > > - miiphy_write(name, phyaddr, 0x10, 0x3860); > > > - miiphy_write(name, phyaddr, 0x0, 0x9140); > > > - > > > - printf("MV88E1318 PHY initialized on %s\n", name); > > > + return cpu_eth_init(bis); > > > } > > > -#endif /* CONFIG_RESET_PHY_R */ > > > diff --git a/configs/nsa310s_defconfig b/configs/nsa310s_defconfig > > > index 05a6761854..07c96489c0 100644 > > > --- a/configs/nsa310s_defconfig > > > +++ b/configs/nsa310s_defconfig > > > @@ -2,6 +2,7 @@ CONFIG_ARM=y > > > CONFIG_SKIP_LOWLEVEL_INIT=y > > > CONFIG_SYS_DCACHE_OFF=y > > > CONFIG_ARCH_CPU_INIT=y > > > +CONFIG_SYS_THUMB_BUILD=y > > > CONFIG_ARCH_KIRKWOOD=y > > > CONFIG_SYS_KWD_CONFIG="board/zyxel/nsa310s/kwbimage.cfg" > > > CONFIG_SYS_TEXT_BASE=0x600000 > > > @@ -31,6 +32,7 @@ CONFIG_CMD_PING=y > > > CONFIG_CMD_EXT2=y > > > CONFIG_CMD_FAT=y > > > CONFIG_CMD_JFFS2=y > > > +CONFIG_CMD_FS_GENERIC=y > > > CONFIG_CMD_MTDPARTS=y > > > > > > CONFIG_MTDPARTS_DEFAULT="mtdparts=orion_nand:0xe0000@0x0(uboot),0x20000@0xe0000(uboot_env),0x100000@0x100000(second_stage_uboot),-@0x200000(root)" > > > CONFIG_CMD_UBI=y > > > @@ -47,6 +49,7 @@ CONFIG_SYS_SATA_MAX_DEVICE=1 > > > # CONFIG_MMC is not set > > > CONFIG_MTD=y > > > CONFIG_MTD_RAW_NAND=y > > > +CONFIG_PHY_MARVELL=y > > > CONFIG_DM_ETH=y > > > CONFIG_MVGBE=y > > > CONFIG_MII=y > > > diff --git a/drivers/net/mvgbe.c b/drivers/net/mvgbe.c > > > index 954bf86121..9aff72bc74 100644 > > > --- a/drivers/net/mvgbe.c > > > +++ b/drivers/net/mvgbe.c > > > @@ -726,6 +726,13 @@ static int mvgbe_recv(struct eth_device *dev) > > > } > > > #endif > > > > > > +/* PHY related */ > > > +#define MV88E1318_PGADR_REG 22 > > > +#define MV88E1318_MAC_CTRL_PG 2 > > > +#define MV88E1318_MAC_CTRL_REG 21 > > > +#define MV88E1318_RGMII_TX_CTRL (1 << 4) > > > +#define MV88E1318_RGMII_RX_CTRL (1 << 5) > > > + > > > #if defined(CONFIG_PHYLIB) || defined(CONFIG_DM_ETH) > > > #if defined(CONFIG_DM_ETH) > > > static struct phy_device *__mvgbe_phy_init(struct udevice *dev, > > > @@ -740,11 +747,19 @@ static struct phy_device > > > *__mvgbe_phy_init(struct eth_device *dev, > > > #endif > > > { > > > struct phy_device *phydev; > > > + int reg; > > > > > > /* Set phy address of the port */ > > > miiphy_write(dev->name, MV_PHY_ADR_REQUEST, MV_PHY_ADR_REQUEST, > > > phyid); > > > > > > + /* Set RGMII delay */ > > > + miiphy_write(dev->name, phyid, MV88E1318_PGADR_REG, > > > MV88E1318_MAC_CTRL_PG); > > > + miiphy_read(dev->name, phyid, MV88E1318_MAC_CTRL_REG, ®); > > > + reg |= (MV88E1318_RGMII_RX_CTRL | MV88E1318_RGMII_TX_CTRL); > > > + miiphy_write(dev->name, phyid, MV88E1318_MAC_CTRL_REG, reg); > > > + miiphy_write(dev->name, phyid, MV88E1318_PGADR_REG, 0); > > > + > > > phydev = phy_connect(bus, phyid, dev, phy_interface); > > > if (!phydev) { > > > printf("phy_connect failed\n"); > > > > Viele Grüße, > > Stefan Roese > > > > -- > > DENX Software Engineering GmbH, Managing Director: Wolfgang Denk > > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > > Phone: (+49)-8142-66989-51 Fax: (+49)-8142-66989-80 Email: s...@denx.de