6.16-stable review patch. If anyone has any objections, please let me know.
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From: Nobuhiro Iwamatsu iwamatsu@nigauri.org
commit ea9da67e2add7bd5f1e4b38dc2404480e711f4d8 upstream.
On SoCFPGA/Sodia board, mdio bus cannot be probed, so the PHY cannot be found and the network device does not work.
``` stmmaceth ff702000.ethernet eth0: __stmmac_open: Cannot attach to PHY (error: -19) ```
To probe the mdio bus, add "snps,dwmac-mdio" as compatible string of the mdio bus. Also the PHY address connected to this board is 4. Therefore, change to 4.
Cc: stable@vger.kernel.org # 6.3+ Signed-off-by: Nobuhiro Iwamatsu iwamatsu@nigauri.org Signed-off-by: Dinh Nguyen dinguyen@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts +++ b/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts @@ -66,8 +66,10 @@ mdio0 { #address-cells = <1>; #size-cells = <0>; - phy0: ethernet-phy@0 { - reg = <0>; + compatible = "snps,dwmac-mdio"; + + phy0: ethernet-phy@4 { + reg = <4>; rxd0-skew-ps = <0>; rxd1-skew-ps = <0>; rxd2-skew-ps = <0>;