From: Aaron Wu Aaron.Wu@analog.com
EMAC_VLANx regs is not properly initiallized in u-boot, once it's overwrite in the kernel when DSA enabled, hot reset will lead to bringing up EMAC fail in u-boot.
Signed-off-by: Aaron Wu Aaron.Wu@analog.com Signed-off-by: Sonic Zhang sonic.zhang@analog.com --- arch/blackfin/include/asm/mach-common/bits/emac.h | 3 +++ drivers/net/bfin_mac.c | 2 ++ 2 files changed, 5 insertions(+)
diff --git a/arch/blackfin/include/asm/mach-common/bits/emac.h b/arch/blackfin/include/asm/mach-common/bits/emac.h index 7a43bbb..4c9bc9d 100644 --- a/arch/blackfin/include/asm/mach-common/bits/emac.h +++ b/arch/blackfin/include/asm/mach-common/bits/emac.h @@ -217,4 +217,7 @@ #define TX_GE1024_CNT 0x00200000 /* 1024-Max-Byte TX Frames Sent */ #define TX_ABORT_CNT 0x00400000 /* TX Frames Aborted */
+/*default value for EMAC_VLANx reg*/ +#define EMAC_VLANX_DEF_VAL 0xFFFF + #endif diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c index 0ffd59d..42e208c 100644 --- a/drivers/net/bfin_mac.c +++ b/drivers/net/bfin_mac.c @@ -259,6 +259,8 @@ static int bfin_miiphy_init(struct eth_device *dev, int *opmode) *opmode = 0;
bfin_write_EMAC_MMC_CTL(RSTC | CROLL); + bfin_write_EMAC_VLAN1(EMAC_VLANX_DEF_VAL); + bfin_write_EMAC_VLAN2(EMAC_VLANX_DEF_VAL);
/* Initialize the TX DMA channel registers */ bfin_write_DMA2_X_COUNT(0);