net: stmmac: add a parse for new property 'snps,clk-csr'

Parse new property 'snps,clk-csr' firstly because the new property
is documented in binding file, if failed, fall back to old property
'clk_csr' for legacy case

Signed-off-by: Jianguo Zhang <jianguo.zhang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index b0b09c7..50f6b4a 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -444,7 +444,8 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
         * or get clk_csr from device tree.
         */
        plat->clk_csr = -1;
-       of_property_read_u32(np, "clk_csr", &plat->clk_csr);
+       if (of_property_read_u32(np, "snps,clk-csr", &plat->clk_csr))
+               of_property_read_u32(np, "clk_csr", &plat->clk_csr);
 
        /* "snps,phy-addr" is not a standard property. Mark it as deprecated
         * and warn of its use. Remove this when phy node support is added.