Hi Jonas, On Thu, Mar 16, 2023 at 3:37 PM Jonas Karlman <jonas@xxxxxxxxx> wrote: > > Hi Tianling, > On 2023-03-16 06:34, Tianling Shen wrote: > > Hi Vasily, > > > > On Thu, Mar 16, 2023 at 8:16 AM Vasily Khoruzhick <anarsoul@xxxxxxxxx> wrote: > >> > >> On Wed, Mar 15, 2023 at 9:02 AM Tianling Shen <cnsztl@xxxxxxxxx> wrote: > >>> > >>> - Changed phy-mode to rgmii. > >>> > >>> - Fixed pull type in pinctrl for gmac0. > >>> > >>> - Removed duplicate properties in mdio node. > >>> These properties are defined in the gmac0 node already. > >>> > >>> Signed-off-by: Tianling Shen <cnsztl@xxxxxxxxx> > >>> --- > >>> arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dts | 7 ++----- > >>> 1 file changed, 2 insertions(+), 5 deletions(-) > >>> > >>> diff --git a/arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dts b/arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dts > >>> index e9adf5e66529..2a1118f15c29 100644 > >>> --- a/arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dts > >>> +++ b/arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dts > >>> @@ -57,7 +57,7 @@ > >>> assigned-clock-rates = <0>, <125000000>; > >>> clock_in_out = "output"; > >>> phy-handle = <&rgmii_phy0>; > >>> - phy-mode = "rgmii-id"; > >>> + phy-mode = "rgmii"; > >>> pinctrl-names = "default"; > >>> pinctrl-0 = <&gmac0_miim > >>> &gmac0_tx_bus2 > >>> @@ -79,9 +79,6 @@ > >>> reg = <1>; > >>> pinctrl-0 = <ð_phy0_reset_pin>; > >>> pinctrl-names = "default"; > >>> - reset-assert-us = <10000>; > >>> - reset-deassert-us = <50000>; > >>> - reset-gpios = <&gpio0 RK_PC4 GPIO_ACTIVE_LOW>; > >> > >> Hmm, I don't see RK_PC4 being used anywhere else. gmac0 has RK_PC5 as > > > > Yes, it's a typo, it should be RK_RC5. > > > >> snsp,reset-gpio. So it essentially drops reset for the PHY. Is it > >> expected? > > > > snsp,reset-gpio defined reset already, so we don't need to set it here again. > > > > --- > > > > snsp,reset-gpio is the legacy binding, but I still have no idea why > > reset-gpios doesn't work, > > the dwmac driver will fail to lookup phy: > > > > [ 10.398514] rk_gmac-dwmac fe2a0000.ethernet eth0: no phy found > > [ 10.399061] rk_gmac-dwmac fe2a0000.ethernet eth0: __stmmac_open: > > Cannot attach to PHY (error: -19) > > > > Any ideas would be appreciated. > > Generic ethernet phy driver is not resetting the phy in the same way > that snsp,reset-gpio does, please see top two commits at [1]. > > I have been meaning to send that out as an RFC but I got stuck in a > u-boot rabbit hole, and I also do not know what the correct way to fix > this would be, so I played with both device tree and code changes. > Will prioritize this and send out a RFC later today. > > [1] https://github.com/Kwiboo/linux-rockchip/commits/rk3568-eth-phy-reset Thanks for the hint! I will test your patches tonight. Thanks, Tianling. > > Regards, > Jonas > > > > > Thanks, > > Tianling. > > > >> > >>> }; > >>> }; > >>> > >>> @@ -115,7 +112,7 @@ > >>> &pinctrl { > >>> gmac0 { > >>> eth_phy0_reset_pin: eth-phy0-reset-pin { > >>> - rockchip,pins = <0 RK_PC4 RK_FUNC_GPIO &pcfg_pull_down>; > >>> + rockchip,pins = <0 RK_PC4 RK_FUNC_GPIO &pcfg_pull_up>; > >>> }; > >>> }; > >>> > >>> -- > >>> 2.17.1 > >>> >
