| Message ID | 1635406037-20900-8-git-send-email-hongxing.zhu@nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | add the imx8m pcie phy driver and imx8mm pcie support | expand |
On Thu, 2021-10-28 at 15:27 +0800, Richard Zhu wrote: > Add the PCIe support on iMX8MM EVK boards. > And set the default reference clock mode. > > Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> > Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> > --- > arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 55 +++++++++++++++++++ > 1 file changed, 55 insertions(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > index e033d0257b5a..fc1803a8af5b 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > @@ -5,6 +5,7 @@ > > /dts-v1/; > > +#include <dt-bindings/phy/phy-imx8-pcie.h> > #include <dt-bindings/usb/pd.h> > #include "imx8mm.dtsi" > > @@ -30,6 +31,23 @@ status { > }; > }; > > + pcie0_refclk: pcie0-refclk { > + compatible = "fixed-clock"; > + #clock-cells = <0>; > + clock-frequency = <100000000>; > + }; > + > + reg_pcie0: regulator-pcie { > + compatible = "regulator-fixed"; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_pcie0_reg>; > + regulator-name = "MPCIE_3V3"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3300000>; > + gpio = <&gpio1 5 GPIO_ACTIVE_HIGH>; > + enable-active-high; > + }; > + > reg_usdhc2_vmmc: regulator-usdhc2 { > compatible = "regulator-fixed"; > pinctrl-names = "default"; > @@ -289,6 +307,30 @@ pca6416: gpio@20 { > }; > }; > > +&pcie_phy { > + fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>; > + fsl,tx-deemph-gen1 = <0x2D>; > + fsl,tx-deemph-gen2 = <0xF>; Usually, hex notation uses lower-case letters in device trees. > + clocks = <&pcie0_refclk>; > + status = "okay"; > +}; > + > +&pcie0 { > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_pcie0>; > + reset-gpio = <&gpio4 21 GPIO_ACTIVE_LOW>; > + clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&clk IMX8MM_CLK_PCIE1_AUX>, > + <&pcie0_refclk>; > + clock-names = "pcie", "pcie_aux", "pcie_bus"; > + assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>, > + <&clk IMX8MM_CLK_PCIE1_CTRL>; > + assigned-clock-rates = <10000000>, <250000000>; > + assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_50M>, > + <&clk IMX8MM_SYS_PLL2_250M>; > + vpcie-supply = <®_pcie0>; > + status = "okay"; > +}; > + > &sai3 { > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_sai3>; > @@ -406,6 +448,19 @@ MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA 0x400001c3 > >; > }; > > + pinctrl_pcie0: pcie0grp { > + fsl,pins = < > + MX8MM_IOMUXC_I2C4_SCL_PCIE1_CLKREQ_B 0x61 > + MX8MM_IOMUXC_SAI2_RXFS_GPIO4_IO21 0x41 > + >; > + }; > + > + pinctrl_pcie0_reg: pcie0reggrp { > + fsl,pins = < > + MX8MM_IOMUXC_GPIO1_IO05_GPIO1_IO5 0x41 > + >; > + }; > + > pinctrl_pmic: pmicirqgrp { > fsl,pins = < > MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3 0x141
> -----Original Message----- > From: Marcel Ziswiler <marcel.ziswiler@toradex.com> > Sent: Friday, October 29, 2021 4:21 PM > To: kishon@ti.com; vkoul@kernel.org; robh@kernel.org; > l.stach@pengutronix.de; shawnguo@kernel.org; > tharvey@gateworks.com; galak@kernel.crashing.org; Richard Zhu > <hongxing.zhu@nxp.com> > Cc: linux-phy@lists.infradead.org; linux-arm-kernel@lists.infradead.org; > kernel@pengutronix.de; devicetree@vger.kernel.org; > linux-kernel@vger.kernel.org; dl-linux-imx <linux-imx@nxp.com> > Subject: Re: [PATCH v4 7/8] arm64: dts: imx8mm-evk: Add the pcie > support on imx8mm evk board > > On Thu, 2021-10-28 at 15:27 +0800, Richard Zhu wrote: > > Add the PCIe support on iMX8MM EVK boards. > > And set the default reference clock mode. > > > > Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> > > Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> > > --- > > arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 55 > > +++++++++++++++++++ > > 1 file changed, 55 insertions(+) > > > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > > b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > > index e033d0257b5a..fc1803a8af5b 100644 > > --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > > +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > > @@ -5,6 +5,7 @@ > > > > /dts-v1/; > > > > +#include <dt-bindings/phy/phy-imx8-pcie.h> > > #include <dt-bindings/usb/pd.h> > > #include "imx8mm.dtsi" > > > > @@ -30,6 +31,23 @@ status { > > }; > > }; > > > > + pcie0_refclk: pcie0-refclk { > > + compatible = "fixed-clock"; > > + #clock-cells = <0>; > > + clock-frequency = <100000000>; > > + }; > > + > > + reg_pcie0: regulator-pcie { > > + compatible = "regulator-fixed"; > > + pinctrl-names = "default"; > > + pinctrl-0 = <&pinctrl_pcie0_reg>; > > + regulator-name = "MPCIE_3V3"; > > + regulator-min-microvolt = <3300000>; > > + regulator-max-microvolt = <3300000>; > > + gpio = <&gpio1 5 GPIO_ACTIVE_HIGH>; > > + enable-active-high; > > + }; > > + > > reg_usdhc2_vmmc: regulator-usdhc2 { > > compatible = "regulator-fixed"; > > pinctrl-names = "default"; @@ -289,6 +307,30 > @@ > > pca6416: gpio@20 { > > }; > > }; > > > > +&pcie_phy { > > + fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>; > > + fsl,tx-deemph-gen1 = <0x2D>; > > + fsl,tx-deemph-gen2 = <0xF>; > > Usually, hex notation uses lower-case letters in device trees. [Richard Zhu] Okay, would be changed later in next version later. Thanks BR Richard > > > + clocks = <&pcie0_refclk>; > > + status = "okay"; > > +}; > > + > > +&pcie0 { > > + pinctrl-names = "default"; > > + pinctrl-0 = <&pinctrl_pcie0>; > > + reset-gpio = <&gpio4 21 GPIO_ACTIVE_LOW>; > > + clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&clk > > +IMX8MM_CLK_PCIE1_AUX>, > > + <&pcie0_refclk>; > > + clock-names = "pcie", "pcie_aux", "pcie_bus"; > > + assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>, > > + <&clk > IMX8MM_CLK_PCIE1_CTRL>; > > + assigned-clock-rates = <10000000>, <250000000>; > > + assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_50M>, > > + <&clk > IMX8MM_SYS_PLL2_250M>; > > + vpcie-supply = <®_pcie0>; > > + status = "okay"; > > +}; > > + > > &sai3 { > > pinctrl-names = "default"; > > pinctrl-0 = <&pinctrl_sai3>; > > @@ -406,6 +448,19 @@ > MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA > > 0x400001c3 > > >; > > }; > > > > + pinctrl_pcie0: pcie0grp { > > + fsl,pins = < > > > + MX8MM_IOMUXC_I2C4_SCL_PCIE1 > _CLKREQ_B 0x61 > > > + MX8MM_IOMUXC_SAI2_RXFS_GPIO > 4_IO21 0x41 > > + >; > > + }; > > + > > + pinctrl_pcie0_reg: pcie0reggrp { > > + fsl,pins = < > > > + MX8MM_IOMUXC_GPIO1_IO05_GPI > O1_IO5 0x41 > > + >; > > + }; > > + > > pinctrl_pmic: pmicirqgrp { > > fsl,pins = < > > MX8MM_IOMUXC_GPIO1_IO03_ > GPIO1_IO3 > > 0x141
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi index e033d0257b5a..fc1803a8af5b 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi @@ -5,6 +5,7 @@ /dts-v1/; +#include <dt-bindings/phy/phy-imx8-pcie.h> #include <dt-bindings/usb/pd.h> #include "imx8mm.dtsi" @@ -30,6 +31,23 @@ status { }; }; + pcie0_refclk: pcie0-refclk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <100000000>; + }; + + reg_pcie0: regulator-pcie { + compatible = "regulator-fixed"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pcie0_reg>; + regulator-name = "MPCIE_3V3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpio = <&gpio1 5 GPIO_ACTIVE_HIGH>; + enable-active-high; + }; + reg_usdhc2_vmmc: regulator-usdhc2 { compatible = "regulator-fixed"; pinctrl-names = "default"; @@ -289,6 +307,30 @@ pca6416: gpio@20 { }; }; +&pcie_phy { + fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>; + fsl,tx-deemph-gen1 = <0x2D>; + fsl,tx-deemph-gen2 = <0xF>; + clocks = <&pcie0_refclk>; + status = "okay"; +}; + +&pcie0 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pcie0>; + reset-gpio = <&gpio4 21 GPIO_ACTIVE_LOW>; + clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&clk IMX8MM_CLK_PCIE1_AUX>, + <&pcie0_refclk>; + clock-names = "pcie", "pcie_aux", "pcie_bus"; + assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>, + <&clk IMX8MM_CLK_PCIE1_CTRL>; + assigned-clock-rates = <10000000>, <250000000>; + assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_50M>, + <&clk IMX8MM_SYS_PLL2_250M>; + vpcie-supply = <®_pcie0>; + status = "okay"; +}; + &sai3 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sai3>; @@ -406,6 +448,19 @@ MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA 0x400001c3 >; }; + pinctrl_pcie0: pcie0grp { + fsl,pins = < + MX8MM_IOMUXC_I2C4_SCL_PCIE1_CLKREQ_B 0x61 + MX8MM_IOMUXC_SAI2_RXFS_GPIO4_IO21 0x41 + >; + }; + + pinctrl_pcie0_reg: pcie0reggrp { + fsl,pins = < + MX8MM_IOMUXC_GPIO1_IO05_GPIO1_IO5 0x41 + >; + }; + pinctrl_pmic: pmicirqgrp { fsl,pins = < MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3 0x141