diff options
| author | Peng Fan <Peng.Fan@freescale.com> | 2015-08-12 17:46:51 +0800 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2015-09-02 15:29:14 +0200 |
| commit | fbecbaa158329b882b1c024f845bc52cf4562b47 (patch) | |
| tree | fe3c76a86e3b12ebc28eb407b9e24a5d405b5d05 /drivers | |
| parent | 6d97dc10a81062a787fcf5e5df7b88d1ea122a64 (diff) | |
| download | blackbird-obmc-uboot-fbecbaa158329b882b1c024f845bc52cf4562b47.tar.gz blackbird-obmc-uboot-fbecbaa158329b882b1c024f845bc52cf4562b47.zip | |
net: fec: do not access reserved register for i.MX6UL
The MIB RAM and FIFO receive start register does not exist on
i.MX6UL. Accessing these register will cause enet not work well.
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/fec_mxc.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c index c5dcbbbced..bff5fd1119 100644 --- a/drivers/net/fec_mxc.c +++ b/drivers/net/fec_mxc.c @@ -17,6 +17,7 @@ #include <asm/arch/clock.h> #include <asm/arch/imx-regs.h> +#include <asm/imx-common/sys_proto.h> #include <asm/io.h> #include <asm/errno.h> #include <linux/compiler.h> @@ -551,12 +552,15 @@ static int fec_init(struct eth_device *dev, bd_t* bd) writel(0x00000000, &fec->eth->gaddr2); - /* clear MIB RAM */ - for (i = mib_ptr; i <= mib_ptr + 0xfc; i += 4) - writel(0, i); + /* Do not access reserved register for i.MX6UL */ + if (!is_cpu_type(MXC_CPU_MX6UL)) { + /* clear MIB RAM */ + for (i = mib_ptr; i <= mib_ptr + 0xfc; i += 4) + writel(0, i); - /* FIFO receive start register */ - writel(0x520, &fec->eth->r_fstart); + /* FIFO receive start register */ + writel(0x520, &fec->eth->r_fstart); + } /* size and address of each buffer */ writel(FEC_MAX_PKT_SIZE, &fec->eth->emrbr); |
