From: Marcel Ziswiler marcel.ziswiler@toradex.com
This patch fixes operation of our on-board AX88772B chip without EEPROM but with a ethaddr coming from the regular U-Boot environment. This is a forward port of some remaining parts initially implemented by Antmicro.
Signed-off-by: Marcel Ziswiler marcel.ziswiler@toradex.com --- Changes in v2: - run it through checkpatch.pl as suggested by Marek and Joe - cleanup comments and use VID/PID defines as suggested by Marek - dug out an AX88772 (not B) dongle again and verified operation - AX88772 (not B) indeed does not work with B modifications (e.g. VID/PID based differentiation is indeed required) - dug out another AX88772B dongle as well and verified operation
drivers/usb/eth/asix.c | 32 +++++++++++++++++++++++++++++--- 1 file changed, 29 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/eth/asix.c b/drivers/usb/eth/asix.c index c8697ae..1c2c2d0 100644 --- a/drivers/usb/eth/asix.c +++ b/drivers/usb/eth/asix.c @@ -1,6 +1,8 @@ /* * Copyright (c) 2011 The Chromium OS Authors. * + * Patched for AX88772B by Antmicro Ltd <www.antmicro.com> + * * SPDX-License-Identifier: GPL-2.0+ */
@@ -64,8 +66,11 @@ AX_MEDIUM_AC | AX_MEDIUM_RE)
/* AX88772 & AX88178 RX_CTL values */ -#define AX_RX_CTL_SO 0x0080 -#define AX_RX_CTL_AB 0x0008 +#define AX_RX_CTL_RH2M 0x0200 /* 32-bit aligned RX IP header */ +#define AX_RX_CTL_RH1M 0x0100 /* Enable RX header format type 1 */ +#define AX_RX_CTL_SO 0x0080 +#define AX_RX_CTL_AB 0x0008 +#define AX_RX_HEADER_DEFAULT (AX_RX_CTL_RH1M | AX_RX_CTL_RH2M)
#define AX_DEFAULT_RX_CTL \ (AX_RX_CTL_SO | AX_RX_CTL_AB) @@ -92,6 +97,9 @@ #define FLAG_TYPE_AX88772B (1U << 2) #define FLAG_EEPROM_MAC (1U << 3) /* initial mac address in eeprom */
+#define ASIX_USB_VENDOR_ID 0x0b95 +#define AX88772B_USB_PRODUCT_ID 0x772b + /* local vars */ static int curr_eth_dev; /* index for name of next device detected */
@@ -426,7 +434,16 @@ static int asix_init(struct eth_device *eth, bd_t *bd)
debug("** %s()\n", __func__);
- if (asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL) < 0) + if ((dev->pusb_dev->descriptor.idVendor == ASIX_USB_VENDOR_ID) && + (dev->pusb_dev->descriptor.idProduct == AX88772B_USB_PRODUCT_ID)) { + if (asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL | + AX_RX_HEADER_DEFAULT) < 0) + goto out_err; + } else if (asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL) < 0) { + goto out_err; + } + + if (asix_write_hwaddr(eth) < 0) goto out_err;
do { @@ -447,6 +464,10 @@ static int asix_init(struct eth_device *eth, bd_t *bd) goto out_err; }
+ /* Wait some more to avoid timeout on first transfer + (e.g. EHCI timed out on TD - token=0x8008d80) */ + udelay(25000); + return 0; out_err: return -1; @@ -533,6 +554,11 @@ static int asix_recv(struct eth_device *eth) return -1; }
+ if ((dev->pusb_dev->descriptor.idVendor == ASIX_USB_VENDOR_ID) + && (dev->pusb_dev->descriptor.idProduct == + AX88772B_USB_PRODUCT_ID)) + buf_ptr += 2; + /* Notify net stack */ net_process_received_packet(buf_ptr + sizeof(packet_len), packet_len);