Messages in this thread | | | Date | Thu, 21 Dec 2023 16:28:29 +0800 | Subject | Re: [PATCH] Revert "ARM: dts: rockchip: restyle emac nodes" | From | Andy Yan <> |
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Hi Johan,
On 12/20/23 19:58, Johan Jonker wrote: > > > On 12/20/23 11:33, Andy Yan wrote: >> From: Andy Yan <andy.yan@rock-chips.com> >> >> When try to run rk3036 kylin board with mainline, >> I found the emac ethernet probe failed: >> >> [ 2.324583] loop: module loaded >> [ 2.328435] SPI driver spidev has no spi_device_id for rockchip,spidev >> [ 2.338688] tun: Universal TUN/TAP device driver, 1.6 >> [ 2.345397] rockchip_emac 10200000.ethernet: no regulator found >> [ 2.351892] rockchip_emac 10200000.ethernet: ARC EMAC detected with id: 0x7fd02 >> [ 2.359331] rockchip_emac 10200000.ethernet: IRQ is 43 >> [ 2.364719] rockchip_emac 10200000.ethernet: MAC address is now e6:58:d6:ec:d9:7c >> [ 2.396993] mdio_bus Synopsys MII Bus: mdio has invalid PHY address >> [ 2.403306] mdio_bus Synopsys MII Bus: scan phy mdio at address 0 >> [ 2.508656] rockchip_emac 10200000.ethernet: of_phy_connect() failed >> [ 2.516334] rockchip_emac 10200000.ethernet: failed to probe arc emac (-19) >> >> This reverts commit 1dabb74971b3 ("ARM: dts: rockchip: restyle emac nodes") >> make emac on rk3036 kylin board probe right again: >> [ 1.920385] CAN device driver interface >> [ 1.925499] rockchip_emac 10200000.ethernet: no regulator found >> [ 1.932535] rockchip_emac 10200000.ethernet: ARC EMAC detected with id: 0x7fd02 >> [ 1.940735] rockchip_emac 10200000.ethernet: IRQ is 42 >> [ 1.946743] rockchip_emac 10200000.ethernet: MAC address is now 96:7d:4f:0a:69:b3 >> [ 2.581340] rockchip_emac 10200000.ethernet: connected to Generic PHY phy with id 0xffffc816 >> [ 2.592560] e1000e: Intel(R) PRO/1000 Network Driver >> [ 2.598136] e1000e: Copyright(c) 1999 - 2015 Intel Corporation. >> >> Fixes: 1dabb74971b3 ("ARM: dts: rockchip: restyle emac nodes") >> Signed-off-by: Andy Yan <andy.yan@rock-chips.com> >> --- >> >> arch/arm/boot/dts/rockchip/rk3036-evb.dts | 16 ++++++---------- >> arch/arm/boot/dts/rockchip/rk3036-kylin.dts | 16 ++++++---------- >> arch/arm/boot/dts/rockchip/rk3036.dtsi | 2 ++ >> .../boot/dts/rockchip/rk3066a-marsboard.dts | 17 +++++++---------- >> .../boot/dts/rockchip/rk3066a-rayeager.dts | 15 +++++---------- >> .../boot/dts/rockchip/rk3188-radxarock.dts | 19 ++++++++----------- >> arch/arm/boot/dts/rockchip/rk3xxx.dtsi | 2 ++ >> 7 files changed, 36 insertions(+), 51 deletions(-) >> >> diff --git a/arch/arm/boot/dts/rockchip/rk3036-evb.dts b/arch/arm/boot/dts/rockchip/rk3036-evb.dts >> index becdc0b664bf..94216f870b57 100644 >> --- a/arch/arm/boot/dts/rockchip/rk3036-evb.dts >> +++ b/arch/arm/boot/dts/rockchip/rk3036-evb.dts >> @@ -15,20 +15,16 @@ memory@60000000 { >> }; >> >> &emac { >> - phy = <&phy0>; >> - phy-reset-duration = <10>; /* millisecond */ >> - phy-reset-gpios = <&gpio2 RK_PC6 GPIO_ACTIVE_LOW>; /* PHY_RST */ >> pinctrl-names = "default"; >> pinctrl-0 = <&emac_xfer>, <&emac_mdio>; >> - status = "okay"; >> + phy = <&phy0>; >> + phy-reset-gpios = <&gpio2 RK_PC6 GPIO_ACTIVE_LOW>; /* PHY_RST */ >> + phy-reset-duration = <10>; /* millisecond */ > > >> >> - mdio { >> - #address-cells = <1>; >> - #size-cells = <0>; >> + status = "okay"; >> >> - phy0: ethernet-phy@0 { >> - reg = <0>; >> - }; >> + phy0: ethernet-phy@0 { >> + reg = <0>; >> }; > > Sorry, didn't have the hardware when changing that binding. > A little bit background info: > > The rk3036 TRM states: > Management Interface (MDIO) state machine for easy real-time communication with the > PHY > > A revert of the DT must also match a binding. But... > Bindings must describe the hardware as close as possible. > So when the phy is called over the mdio we must add phy as part of a mdio node.(Is that correct? Ask a expert!) > Somehow the old emac driver doesn't support this sub node setup. > First request would be have a look to make the driver work as it should.
Because I lack of knowledge about net driver, I am not sure if the mdio is mandatory. I post this revert also want to have some suggestion from the net expert. From some grep: emac_rockchip is based on arc-emac, but the example of arc_emac does not have a mdio node[0] thera are also other platforms use the same way[1]
[0] Documentation/devicetree/bindings/net/arc_emac.txt [1]arch/arm/boot/dts/hisilicon/hisi-x5hd2-dkb.dts
> > Johan > >> }; >> >> diff --git a/arch/arm/boot/dts/rockchip/rk3036-kylin.dts b/arch/arm/boot/dts/rockchip/rk3036-kylin.dts >> index 67e1e04139e7..e817eba8c622 100644 >> --- a/arch/arm/boot/dts/rockchip/rk3036-kylin.dts >> +++ b/arch/arm/boot/dts/rockchip/rk3036-kylin.dts >> @@ -80,20 +80,16 @@ &acodec { >> }; >> >> &emac { >> - phy = <&phy0>; >> - phy-reset-duration = <10>; /* millisecond */ >> - phy-reset-gpios = <&gpio2 RK_PC6 GPIO_ACTIVE_LOW>; /* PHY_RST */ >> pinctrl-names = "default"; >> pinctrl-0 = <&emac_xfer>, <&emac_mdio>; >> - status = "okay"; >> + phy = <&phy0>; >> + phy-reset-gpios = <&gpio2 RK_PC6 GPIO_ACTIVE_LOW>; /* PHY_RST */ >> + phy-reset-duration = <10>; /* millisecond */ >> >> - mdio { >> - #address-cells = <1>; >> - #size-cells = <0>; >> + status = "okay"; >> >> - phy0: ethernet-phy@0 { >> - reg = <0>; >> - }; >> + phy0: ethernet-phy@0 { >> + reg = <0>; >> }; >> }; >> >> diff --git a/arch/arm/boot/dts/rockchip/rk3036.dtsi b/arch/arm/boot/dts/rockchip/rk3036.dtsi >> index 78686fc72ce6..e240b89b0b35 100644 >> --- a/arch/arm/boot/dts/rockchip/rk3036.dtsi >> +++ b/arch/arm/boot/dts/rockchip/rk3036.dtsi >> @@ -228,6 +228,8 @@ emac: ethernet@10200000 { >> compatible = "rockchip,rk3036-emac"; >> reg = <0x10200000 0x4000>; >> interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>; >> + #address-cells = <1>; >> + #size-cells = <0>; >> rockchip,grf = <&grf>; >> clocks = <&cru HCLK_MAC>, <&cru SCLK_MACREF>, <&cru SCLK_MAC>; >> clock-names = "hclk", "macref", "macclk"; >> diff --git a/arch/arm/boot/dts/rockchip/rk3066a-marsboard.dts b/arch/arm/boot/dts/rockchip/rk3066a-marsboard.dts >> index f6e8d49a02ef..e3d6f0e81330 100644 >> --- a/arch/arm/boot/dts/rockchip/rk3066a-marsboard.dts >> +++ b/arch/arm/boot/dts/rockchip/rk3066a-marsboard.dts >> @@ -150,21 +150,18 @@ vcc28_cif: regulator@12 { >> #include "../tps65910.dtsi" >> >> &emac { >> + status = "okay"; >> + >> phy = <&phy0>; >> phy-supply = <&vcc_rmii>; >> + >> pinctrl-names = "default"; >> pinctrl-0 = <&emac_xfer>, <&emac_mdio>, <&phy_int>; >> - status = "okay"; >> - >> - mdio { >> - #address-cells = <1>; >> - #size-cells = <0>; >> >> - phy0: ethernet-phy@0 { >> - reg = <0>; >> - interrupt-parent = <&gpio1>; >> - interrupts = <RK_PD2 IRQ_TYPE_LEVEL_LOW>; >> - }; >> + phy0: ethernet-phy@0 { >> + reg = <0>; >> + interrupt-parent = <&gpio1>; >> + interrupts = <RK_PD2 IRQ_TYPE_LEVEL_LOW>; >> }; >> }; >> >> diff --git a/arch/arm/boot/dts/rockchip/rk3066a-rayeager.dts b/arch/arm/boot/dts/rockchip/rk3066a-rayeager.dts >> index 29d8e5bf88f5..096616324c2d 100644 >> --- a/arch/arm/boot/dts/rockchip/rk3066a-rayeager.dts >> +++ b/arch/arm/boot/dts/rockchip/rk3066a-rayeager.dts >> @@ -142,20 +142,15 @@ &cpu1 { >> }; >> >> &emac { >> - phy = <&phy0>; >> - phy-supply = <&vcc_rmii>; >> pinctrl-names = "default"; >> pinctrl-0 = <&emac_xfer>, <&emac_mdio>, <&rmii_rst>; >> + phy = <&phy0>; >> + phy-supply = <&vcc_rmii>; >> status = "okay"; >> >> - mdio { >> - #address-cells = <1>; >> - #size-cells = <0>; >> - >> - phy0: ethernet-phy@0 { >> - reg = <0>; >> - reset-gpios = <&gpio1 RK_PD6 GPIO_ACTIVE_LOW>; >> - }; >> + phy0: ethernet-phy@0 { >> + reg = <0>; >> + reset-gpios = <&gpio1 RK_PD6 GPIO_ACTIVE_LOW>; >> }; >> }; >> >> diff --git a/arch/arm/boot/dts/rockchip/rk3188-radxarock.dts b/arch/arm/boot/dts/rockchip/rk3188-radxarock.dts >> index 118deacd38c4..239d2ec37fdc 100644 >> --- a/arch/arm/boot/dts/rockchip/rk3188-radxarock.dts >> +++ b/arch/arm/boot/dts/rockchip/rk3188-radxarock.dts >> @@ -126,21 +126,18 @@ vsys: vsys-regulator { >> }; >> >> &emac { >> - phy = <&phy0>; >> - phy-supply = <&vcc_rmii>; >> + status = "okay"; >> + >> pinctrl-names = "default"; >> pinctrl-0 = <&emac_xfer>, <&emac_mdio>, <&phy_int>; >> - status = "okay"; >> >> - mdio { >> - #address-cells = <1>; >> - #size-cells = <0>; >> + phy = <&phy0>; >> + phy-supply = <&vcc_rmii>; >> >> - phy0: ethernet-phy@0 { >> - reg = <0>; >> - interrupt-parent = <&gpio3>; >> - interrupts = <RK_PD2 IRQ_TYPE_LEVEL_LOW>; >> - }; >> + phy0: ethernet-phy@0 { >> + reg = <0>; >> + interrupt-parent = <&gpio3>; >> + interrupts = <RK_PD2 IRQ_TYPE_LEVEL_LOW>; >> }; >> }; >> >> diff --git a/arch/arm/boot/dts/rockchip/rk3xxx.dtsi b/arch/arm/boot/dts/rockchip/rk3xxx.dtsi >> index cb4e42ede56a..17e89d30de78 100644 >> --- a/arch/arm/boot/dts/rockchip/rk3xxx.dtsi >> +++ b/arch/arm/boot/dts/rockchip/rk3xxx.dtsi >> @@ -193,6 +193,8 @@ emac: ethernet@10204000 { >> compatible = "snps,arc-emac"; >> reg = <0x10204000 0x3c>; >> interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>; >> + #address-cells = <1>; >> + #size-cells = <0>; >> >> rockchip,grf = <&grf>; >>
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