čt 20. 1. 2022 v 9:42 odesílatel Andy Chiu andy.chiu@sifive.com napsal:

From: Greentime Hu greentime.hu@sifive.com

If we just use fdtdec_get_addr_size_fixed to get "reg" it will use 64bit address cell to get the base address.

soc { #address-cells = <1>; #size-cells = <1>; compatible ="SiFive,FU500-soc", "fu500-soc", "sifive-soc", "simple-bus"; ranges; L28: axidma@30010000 { #dma-cells = <1>; compatible = "xlnx,axi-dma-1.00.a"; axistream-connected = <&L27>; axistream-control-connected = <&L27>; clocks = <&L1>; interrupt-parent = <&L6>; interrupts = <32 33>; reg = <0x30010000 0x4000>;

fdtdec_get_addr_size_fixed: reg: addr=3001000000004000

We should get the base address through its parent's address-cells and size-cells settings. So we should use fdtdec_get_addr_size_auto_parent() to get correct base address.

After applying this patch, we can get the correct base address of dma by replacing fdtdec_get_addr_size_fixed() with fdtdec_get_addr_size_auto_parent().

fdtdec_get_addr_size_auto_parent: na=1, ns=1, fdtdec_get_addr_size_fixed: reg: addr=30010000

Signed-off-by: Greentime Hu greentime.hu@sifive.com Signed-off-by: Andy Chiu andy.chiu@sifive.com

---

drivers/net/xilinx_axi_emac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/xilinx_axi_emac.c b/drivers/net/xilinx_axi_emac.c index 2ec76d0f52..f21addb4d0 100644 --- a/drivers/net/xilinx_axi_emac.c +++ b/drivers/net/xilinx_axi_emac.c @@ -832,8 +832,8 @@ static int axi_emac_of_to_plat(struct udevice *dev) printf("%s: axistream is not found\n", __func__); return -EINVAL; }

•   plat->dmatx = (struct axidma_reg *)fdtdec_get_addr(gd->fdt_blob,
  

•                                                     offset, "reg");
  

•   plat->dmatx = (struct axidma_reg *)fdtdec_get_addr_size_auto_parent
  

•                 (gd->fdt_blob, 0, offset, "reg", 0, NULL, false);
    if (!plat->dmatx) {
            printf("%s: axi_dma register space not found\n", __func__);
            return -EINVAL;
  

-- 2.34.1

Applied. M